Product Detail Manual EC
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B ENGINE A EC SECTION ENGINE CONTROL SYSTEM C D E CONTENTS INDEX FOR DTC ........................................................ 8 DTC No. Index ......................................................... 8 Alphabetical Index .................................................. 13 PRECAUTIONS ........................................................ 18 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” ................................................................ 18 On Board Diagnostic (OBD) System of Engine and A/T .......................................................................... 18 Precaution .............................................................. 18 PREPARATION ......................................................... 22 Special Service Tools ............................................. 22 Commercial Service Tools ...................................... 24 ENGINE CONTROL SYSTEM .................................. 25 System Diagram ..................................................... 25 Multiport Fuel Injection (MFI) System .................... 26 Electronic Ignition (EI) System ............................... 28 Fuel Cut Control (at No Load and High Engine Speed) .................................................................... 29 AIR CONDITIONING CUT CONTROL ..................... 30 Input/Output Signal Chart ....................................... 30 System Description ................................................ 30 AUTOMATIC SPEED CONTROL DEVICE (ASCD)... 31 System Description ................................................ 31 Component Description .......................................... 32 CAN COMMUNICATION .......................................... 33 System Description ................................................ 33 EVAPORATIVE EMISSION SYSTEM ....................... 34 Description ............................................................. 34 Component Inspection ........................................... 37 Removal and Installation ........................................ 38 How to Detect Fuel Vapor Leakage ....................... 38 ON BOARD REFUELING VAPOR RECOVERY (ORVR) ...................................................................... 41 System Description ................................................ 41 Diagnostic Procedure ............................................. 42 Component Inspection ........................................... 45 POSITIVE CRANKCASE VENTILATION ................. 47 Description ............................................................. 47 Component Inspection ........................................... 47 Revision: July 2006 NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEMNATS) ........................................................................ 49 Description .............................................................. 49 ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 50 Introduction ............................................................. 50 Two Trip Detection Logic ........................................ 50 Emission-related Diagnostic Information ................ 51 Malfunction Indicator Lamp (MIL) ........................... 66 OBD System Operation Chart ................................ 70 BASIC SERVICE PROCEDURE ............................... 75 Basic Inspection ..................................................... 75 Idle Speed and Ignition Timing Check .................... 80 VIN Registration ..................................................... 81 Accelerator Pedal Released Position Learning ...... 82 Throttle Valve Closed Position Learning ................. 82 Idle Air Volume Learning ........................................ 82 Fuel Pressure Check .............................................. 84 TROUBLE DIAGNOSIS ............................................ 88 Trouble Diagnosis Introduction ............................... 88 DTC Inspection Priority Chart ................................. 94 Fail-safe Chart ........................................................ 96 Symptom Matrix Chart ............................................ 97 Engine Control Component Parts Location .......... 101 Vacuum Hose Drawing ......................................... 109 Circuit Diagram ..................................................... 110 ECM Harness Connector Terminal Layout ........... 112 ECM Terminals and Reference Value ................... 112 CONSULT-II Function (ENGINE) .......................... 121 Generic Scan Tool (GST) Function ....................... 134 CONSULT-II Reference Value in Data Monitor ..... 137 Major Sensor Reference Graph in Data Monitor Mode ..................................................................... 140 TROUBLE DIAGNOSIS - SPECIFICATION VALUE. 142 Description ............................................................ 142 Testing Condition .................................................. 142 Inspection Procedure ............................................ 142 Diagnostic Procedure ........................................... 143 TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ....................................................................... 152 EC-1 2006 Quest F G H I J K L M Description ............................................................ 152 Diagnostic Procedure ........................................... 152 POWER SUPPLY AND GROUND CIRCUIT ........... 153 Wiring Diagram ..................................................... 153 Diagnostic Procedure ........................................... 156 Ground Inspection ................................................ 161 DTC U1000, U1001 CAN COMMUNICATION LINE. 162 Description ............................................................ 162 On Board Diagnosis Logic .................................... 162 DTC Confirmation Procedure ............................... 162 Wiring Diagram ..................................................... 163 Diagnostic Procedure ........................................... 164 DTC U1010 CAN COMMUNICATION ..................... 165 Description ............................................................ 165 On Board Diagnosis Logic .................................... 165 DTC Confirmation Procedure ............................... 165 Diagnostic Procedure ........................................... 166 DTC P0011, P0021 IVT CONTROL ........................ 167 Description ............................................................ 167 CONSULT-II Reference Value in Data Monitor Mode . 167 On Board Diagnosis Logic .................................... 168 DTC Confirmation Procedure ............................... 168 Diagnostic Procedure ........................................... 170 Component Inspection .......................................... 171 Removal and Installation ...................................... 171 DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER .................................................................. 172 Description ............................................................ 172 CONSULT-II Reference Value in Data Monitor Mode . 172 On Board Diagnosis Logic .................................... 172 DTC Confirmation Procedure ............................... 172 Wiring Diagram ..................................................... 173 Diagnostic Procedure ........................................... 177 Component Inspection .......................................... 179 Removal and Installation ...................................... 179 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER. 180 Description ............................................................ 180 CONSULT-II Reference Value in Data Monitor Mode . 180 On Board Diagnosis Logic .................................... 180 DTC Confirmation Procedure ............................... 181 Wiring Diagram ..................................................... 182 Diagnostic Procedure ........................................... 186 Component Inspection .......................................... 188 Removal and Installation ...................................... 189 DTC P0075, P0081 IVT CONTROL SOLENOID VALVE ..................................................................... 190 Component Description ........................................ 190 CONSULT-II Reference Value in Data Monitor Mode . 190 On Board Diagnosis Logic .................................... 190 DTC Confirmation Procedure ............................... 190 Wiring Diagram ..................................................... 191 Diagnostic Procedure ........................................... 195 Component Inspection .......................................... 196 Removal and Installation ...................................... 196 DTC P0101 MAF SENSOR ..................................... 197 Revision: July 2006 Component Description ........................................ 197 CONSULT-II Reference Value in Data Monitor Mode .197 On Board Diagnosis Logic .................................... 197 DTC Confirmation Procedure ................................ 198 Overall Function Check ......................................... 199 Wiring Diagram ..................................................... 200 Diagnostic Procedure ............................................ 201 Component Inspection .......................................... 205 Removal and Installation ....................................... 206 DTC P0102, P0103 MAF SENSOR ......................... 207 Component Description ........................................ 207 CONSULT-II Reference Value in Data Monitor Mode .207 On Board Diagnosis Logic .................................... 207 DTC Confirmation Procedure ................................ 208 Wiring Diagram ..................................................... 209 Diagnostic Procedure ............................................ 210 Component Inspection .......................................... 214 Removal and Installation ....................................... 215 DTC P0112, P0113 IAT SENSOR ............................ 216 Component Description ........................................ 216 On Board Diagnosis Logic .................................... 216 DTC Confirmation Procedure ................................ 216 Wiring Diagram ..................................................... 217 Diagnostic Procedure ............................................ 218 Component Inspection .......................................... 220 Removal and Installation ....................................... 220 DTC P0117, P0118 ECT SENSOR .......................... 221 Component Description ........................................ 221 On Board Diagnosis Logic .................................... 221 DTC Confirmation Procedure ................................ 222 Wiring Diagram ..................................................... 223 Diagnostic Procedure ............................................ 224 Component Inspection .......................................... 226 Removal and Installation ....................................... 226 DTC P0122, P0123 TP SENSOR ............................ 227 Component Description ........................................ 227 CONSULT-II Reference Value in Data Monitor Mode .227 On Board Diagnosis Logic .................................... 227 DTC Confirmation Procedure ................................ 228 Wiring Diagram ..................................................... 229 Diagnostic Procedure ............................................ 231 Component Inspection .......................................... 234 Removal and Installation ....................................... 234 DTC P0125 ECT SENSOR ...................................... 235 Component Description ........................................ 235 On Board Diagnosis Logic .................................... 235 DTC Confirmation Procedure ................................ 236 Diagnostic Procedure ............................................ 237 Component Inspection .......................................... 238 Removal and Installation ....................................... 238 DTC P0127 IAT SENSOR ........................................ 239 Component Description ........................................ 239 On Board Diagnosis Logic .................................... 239 DTC Confirmation Procedure ................................ 239 Diagnostic Procedure ............................................ 240 EC-2 2006 Quest Component Inspection ......................................... 241 Removal and Installation ...................................... 241 DTC P0128 THERMOSTAT FUNCTION ................ 242 On Board Diagnosis Logic ................................... 242 DTC Confirmation Procedure ............................... 242 Diagnostic Procedure ........................................... 242 Component Inspection ......................................... 243 Removal and Installation ...................................... 243 DTC P0130, P0150 A/F SENSOR 1 ....................... 244 Component Description ........................................ 244 CONSULT-II Reference Value in Data Monitor Mode . 244 On Board Diagnosis Logic ................................... 244 DTC Confirmation Procedure ............................... 244 Overall Function Check ........................................ 245 Wiring Diagram .................................................... 247 Diagnostic Procedure ........................................... 251 Removal and Installation ...................................... 254 DTC P0131, P0151 A/F SENSOR 1 ....................... 255 Component Description ........................................ 255 CONSULT-II Reference Value in Data Monitor Mode . 255 On Board Diagnosis Logic ................................... 255 DTC Confirmation Procedure ............................... 255 Wiring Diagram .................................................... 257 Diagnostic Procedure ........................................... 261 Removal and Installation ...................................... 264 DTC P0132, P0152 A/F SENSOR 1 ....................... 265 Component Description ........................................ 265 CONSULT-II Reference Value in Data Monitor Mode . 265 On Board Diagnosis Logic ................................... 265 DTC Confirmation Procedure ............................... 265 Wiring Diagram .................................................... 267 Diagnostic Procedure ........................................... 271 Removal and Installation ...................................... 274 DTC P0133, P0153 A/F SENSOR 1 ....................... 275 Component Description ........................................ 275 CONSULT-II Reference Value in Data Monitor Mode . 275 On Board Diagnosis Logic ................................... 275 DTC Confirmation Procedure ............................... 276 Wiring Diagram .................................................... 278 Diagnostic Procedure ........................................... 282 Removal and Installation ...................................... 287 DTC P0137, P0157 HO2S2 .................................... 288 Component Description ........................................ 288 CONSULT-II Reference Value in Data Monitor Mode . 288 On Board Diagnosis Logic ................................... 288 DTC Confirmation Procedure ............................... 289 Overall Function Check ........................................ 289 Wiring Diagram .................................................... 291 Diagnostic Procedure ........................................... 295 Component Inspection ......................................... 298 Removal and Installation ...................................... 300 DTC P0138, P0158 HO2S2 .................................... 301 Component Description ........................................ 301 CONSULT-II Reference Value in Data Monitor Mode Revision: July 2006 . 301 On Board Diagnosis Logic .................................... 301 DTC Confirmation Procedure ............................... 302 Overall Function Check ........................................ 303 Wiring Diagram ..................................................... 305 Diagnostic Procedure ........................................... 309 Component Inspection .......................................... 316 Removal and Installation ...................................... 317 DTC P0139, P0159 HO2S2 ..................................... 318 Component Description ........................................ 318 CONSULT-II Reference Value in Data Monitor Mode . 318 On Board Diagnosis Logic .................................... 318 DTC Confirmation Procedure ............................... 319 Overall Function Check ........................................ 319 Wiring Diagram ..................................................... 321 Diagnostic Procedure ........................................... 325 Component Inspection .......................................... 328 Removal and Installation ...................................... 330 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION .............................................................. 331 On Board Diagnosis Logic .................................... 331 DTC Confirmation Procedure ............................... 331 Wiring Diagram ..................................................... 333 Diagnostic Procedure ........................................... 337 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION .............................................................. 343 On Board Diagnosis Logic .................................... 343 DTC Confirmation Procedure ............................... 343 Wiring Diagram ..................................................... 345 Diagnostic Procedure ........................................... 349 DTC P0181 FTT SENSOR ...................................... 355 Component Description ........................................ 355 On Board Diagnosis Logic .................................... 355 DTC Confirmation Procedure ............................... 355 Wiring Diagram ..................................................... 357 Diagnostic Procedure ........................................... 358 Component Inspection .......................................... 360 Removal and Installation ...................................... 360 DTC P0182, P0183 FTT SENSOR .......................... 361 Component Description ........................................ 361 On Board Diagnosis Logic .................................... 361 DTC Confirmation Procedure ............................... 361 Wiring Diagram ..................................................... 362 Diagnostic Procedure ........................................... 363 Component Inspection .......................................... 365 Removal and Installation ...................................... 365 DTC P0222, P0223 TP SENSOR ............................ 366 Component Description ........................................ 366 CONSULT-II Reference Value in Data Monitor Mode . 366 On Board Diagnosis Logic .................................... 366 DTC Confirmation Procedure ............................... 367 Wiring Diagram ..................................................... 368 Diagnostic Procedure ........................................... 370 Component Inspection .......................................... 373 Removal and Installation ...................................... 373 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE ..................... 374 EC-3 2006 Quest A EC C D E F G H I J K L M On Board Diagnosis Logic .................................... 374 DTC Confirmation Procedure ............................... 374 Diagnostic Procedure ........................................... 375 DTC P0327, P0328 KS ............................................ 383 Component Description ........................................ 383 On Board Diagnosis Logic .................................... 383 DTC Confirmation Procedure ............................... 383 Wiring Diagram ..................................................... 384 Diagnostic Procedure ........................................... 385 Component Inspection .......................................... 387 Removal and Installation ...................................... 387 DTC P0335 CKP SENSOR (POS) .......................... 388 Component Description ........................................ 388 CONSULT-II Reference Value in Data Monitor Mode . 388 On Board Diagnosis Logic .................................... 388 DTC Confirmation Procedure ............................... 389 Wiring Diagram ..................................................... 390 Diagnostic Procedure ........................................... 392 Component Inspection .......................................... 395 Removal and Installation ...................................... 395 DTC P0340, P0345 CMP SENSOR (PHASE) ......... 396 Component Description ........................................ 396 On Board Diagnosis Logic .................................... 396 DTC Confirmation Procedure ............................... 396 Wiring Diagram ..................................................... 398 Diagnostic Procedure ........................................... 401 Component Inspection .......................................... 405 Removal and Installation ...................................... 405 DTC P0400 EGR FUNCTION .................................. 406 Description ............................................................ 406 CONSULT-II Reference Value in Data Monitor Mode . 408 On Board Diagnosis Logic .................................... 408 DTC Confirmation Procedure ............................... 408 Wiring Diagram ..................................................... 410 Diagnostic Procedure ........................................... 411 DTC P0403 EGR VOLUME CONTROL VALVE ...... 414 Description ............................................................ 414 CONSULT-II Reference Value in Data Monitor Mode . 415 On Board Diagnosis Logic .................................... 415 DTC Confirmation Procedure ............................... 415 Wiring Diagram ..................................................... 416 Diagnostic Procedure ........................................... 417 Component Inspection .......................................... 418 Removal and Installation ...................................... 420 DTC P0405, P0406 EGRT SENSOR ...................... 421 Component Description ........................................ 421 On Board Diagnosis Logic .................................... 421 DTC Confirmation Procedure ............................... 422 Wiring Diagram ..................................................... 424 Diagnostic Procedure ........................................... 425 Component Inspection .......................................... 427 Removal and Installation ...................................... 427 DTC P0420, P0430 THREE WAY CATALYST FUNCTION ........................................................................ 428 On Board Diagnosis Logic .................................... 428 DTC Confirmation Procedure ............................... 428 Revision: July 2006 Overall Function Check ......................................... 429 Diagnostic Procedure ............................................ 430 DTC P0441 EVAP CONTROL SYSTEM ................. 434 System Description ............................................... 434 On Board Diagnosis Logic .................................... 434 DTC Confirmation Procedure ................................ 434 Overall Function Check ......................................... 435 Diagnostic Procedure ............................................ 436 DTC P0442 EVAP CONTROL SYSTEM ................. 439 On Board Diagnosis Logic .................................... 439 DTC Confirmation Procedure ................................ 440 Diagnostic Procedure ............................................ 441 DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE ............................... 447 Description ............................................................ 447 CONSULT-II Reference Value in Data Monitor Mode .447 On Board Diagnosis Logic .................................... 448 DTC Confirmation Procedure ................................ 448 Wiring Diagram ..................................................... 449 Diagnostic Procedure ............................................ 451 Component Inspection .......................................... 454 Removal and Installation ....................................... 454 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE ...................... 455 Description ............................................................ 455 CONSULT-II Reference Value in Data Monitor Mode .455 On Board Diagnosis Logic .................................... 456 DTC Confirmation Procedure ................................ 456 Wiring Diagram ..................................................... 457 Diagnostic Procedure ............................................ 459 Component Inspection .......................................... 460 Removal and Installation ....................................... 461 DTC P0447 EVAP CANISTER VENT CONTROL VALVE ...................................................................... 462 Component Description ........................................ 462 CONSULT-II Reference Value in Data Monitor Mode .462 On Board Diagnosis Logic .................................... 462 DTC Confirmation Procedure ................................ 463 Wiring Diagram ..................................................... 464 Diagnostic Procedure ............................................ 465 Component Inspection .......................................... 467 DTC P0448 EVAP CANISTER VENT CONTROL VALVE ...................................................................... 469 Component Description ........................................ 469 CONSULT-II Reference Value in Data Monitor Mode .469 On Board Diagnosis Logic .................................... 469 DTC Confirmation Procedure ................................ 470 Wiring Diagram ..................................................... 471 Diagnostic Procedure ............................................ 472 Component Inspection .......................................... 474 DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR .................................................................. 476 Component Description ........................................ 476 CONSULT-II Reference Value in Data Monitor Mode .476 EC-4 2006 Quest On Board Diagnosis Logic ................................... 476 DTC Confirmation Procedure ............................... 477 Diagnostic Procedure ........................................... 477 Component Inspection ......................................... 478 DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR ................................................................. 479 Component Description ........................................ 479 CONSULT-II Reference Value in Data Monitor Mode . 479 On Board Diagnosis Logic ................................... 479 DTC Confirmation Procedure ............................... 480 Wiring Diagram .................................................... 481 Diagnostic Procedure ........................................... 482 Component Inspection ......................................... 485 DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR ................................................................. 486 Component Description ........................................ 486 CONSULT-II Reference Value in Data Monitor Mode . 486 On Board Diagnosis Logic ................................... 486 DTC Confirmation Procedure ............................... 487 Wiring Diagram .................................................... 488 Diagnostic Procedure ........................................... 489 Component Inspection ......................................... 493 DTC P0455 EVAP CONTROL SYSTEM ................ 494 On Board Diagnosis Logic ................................... 494 DTC Confirmation Procedure ............................... 495 Diagnostic Procedure ........................................... 496 DTC P0456 EVAP CONTROL SYSTEM ................ 502 On Board Diagnosis Logic ................................... 502 DTC Confirmation Procedure ............................... 503 Overall Function Check ........................................ 504 Diagnostic Procedure ........................................... 505 DTC P0460 FUEL LEVEL SENSOR ...................... 512 Component Description ........................................ 512 On Board Diagnosis Logic ................................... 512 DTC Confirmation Procedure ............................... 512 Diagnostic Procedure ........................................... 513 Removal and Installation ...................................... 513 DTC P0461 FUEL LEVEL SENSOR ...................... 514 Component Description ........................................ 514 On Board Diagnosis Logic ................................... 514 Overall Function Check ........................................ 514 Diagnostic Procedure ........................................... 515 Removal and Installation ...................................... 515 DTC P0462, P0463 FUEL LEVEL SENSOR .......... 516 Component Description ........................................ 516 On Board Diagnosis Logic ................................... 516 DTC Confirmation Procedure ............................... 516 Diagnostic Procedure ........................................... 517 Removal and Installation ...................................... 517 DTC P0500 VSS ..................................................... 518 Description ........................................................... 518 On Board Diagnosis Logic ................................... 518 DTC Confirmation Procedure ............................... 518 Overall Function Check ........................................ 519 Diagnostic Procedure ........................................... 519 DTC P0506 ISC SYSTEM ....................................... 520 Description ........................................................... 520 Revision: July 2006 On Board Diagnosis Logic .................................... 520 DTC Confirmation Procedure ............................... 520 Diagnostic Procedure ........................................... 521 DTC P0507 ISC SYSTEM ....................................... 522 Description ............................................................ 522 On Board Diagnosis Logic .................................... 522 DTC Confirmation Procedure ............................... 522 Diagnostic Procedure ........................................... 523 DTC P0550 PSP SENSOR ..................................... 524 Component Description ........................................ 524 CONSULT-II Reference Value in Data Monitor Mode . 524 On Board Diagnosis Logic .................................... 524 DTC Confirmation Procedure ............................... 524 Wiring Diagram ..................................................... 525 Diagnostic Procedure ........................................... 526 Component Inspection .......................................... 528 DTC P0603 ECM POWER SUPPLY ....................... 529 Component Description ........................................ 529 On Board Diagnosis Logic .................................... 529 DTC Confirmation Procedure ............................... 529 Wiring Diagram ..................................................... 530 Diagnostic Procedure ........................................... 531 DTC P0605 ECM ..................................................... 533 Component Description ........................................ 533 On Board Diagnosis Logic .................................... 533 DTC Confirmation Procedure ............................... 533 Diagnostic Procedure ........................................... 534 DTC P0643 SENSOR POWER SUPPLY ................ 536 On Board Diagnosis Logic .................................... 536 DTC Confirmation Procedure ............................... 536 Wiring Diagram ..................................................... 537 Diagnostic Procedure ........................................... 539 DTC P0850 PNP SWITCH ...................................... 542 Component Description ........................................ 542 CONSULT-II Reference Value in Data Monitor Mode . 542 On Board Diagnosis Logic .................................... 542 DTC Confirmation Procedure ............................... 542 Overall Function Check ........................................ 543 Wiring Diagram ..................................................... 544 Diagnostic Procedure ........................................... 545 DTC P1148, P1168 CLOSED LOOP CONTROL .... 551 On Board Diagnosis Logic .................................... 551 DTC P1211 TCS CONTROL UNIT .......................... 552 Description ............................................................ 552 On Board Diagnosis Logic .................................... 552 DTC Confirmation Procedure ............................... 552 Diagnostic Procedure ........................................... 552 DTC P1212 TCS COMMUNICATION LINE ............ 553 Description ............................................................ 553 On Board Diagnosis Logic .................................... 553 DTC Confirmation Procedure ............................... 553 Diagnostic Procedure ........................................... 553 DTC P1217 ENGINE OVER TEMPERATURE ........ 554 Description ............................................................ 554 CONSULT-II Reference Value in Data Monitor Mode . 556 On Board Diagnosis Logic .................................... 556 EC-5 2006 Quest A EC C D E F G H I J K L M Overall Function Check ........................................ 557 Wiring Diagram ..................................................... 558 Diagnostic Procedure ........................................... 560 Main 12 Causes of Overheating ........................... 564 Component Inspection .......................................... 565 DTC P1225 TP SENSOR ........................................ 566 Component Description ........................................ 566 On Board Diagnosis Logic .................................... 566 DTC Confirmation Procedure ............................... 566 Diagnostic Procedure ........................................... 567 Removal and Installation ...................................... 567 DTC P1226 TP SENSOR ........................................ 568 Component Description ........................................ 568 On Board Diagnosis Logic .................................... 568 DTC Confirmation Procedure ............................... 568 Diagnostic Procedure ........................................... 569 Removal and Installation ...................................... 569 DTC P1402 EGR FUNCTION .................................. 570 Description ............................................................ 570 CONSULT-II Reference Value in Data Monitor Mode . 572 On Board Diagnosis Logic .................................... 572 DTC Confirmation Procedure ............................... 572 Wiring Diagram ..................................................... 574 Diagnostic Procedure ........................................... 575 DTC P1564 ASCD STEERING SWITCH ................ 577 Component Description ........................................ 577 CONSULT-II Reference Value in Data Monitor Mode . 577 On Board Diagnosis Logic .................................... 577 DTC Confirmation Procedure ............................... 578 Wiring Diagram ..................................................... 579 Diagnostic Procedure ........................................... 581 Component Inspection .......................................... 583 DTC P1572 ASCD BRAKE SWITCH ...................... 585 Component Description ........................................ 585 CONSULT-II Reference Value in Data Monitor Mode . 585 On Board Diagnosis Logic .................................... 585 DTC Confirmation Procedure ............................... 586 Wiring Diagram ..................................................... 587 Diagnostic Procedure ........................................... 588 Component Inspection .......................................... 591 DTC P1574 ASCD VEHICLE SPEED SENSOR ..... 593 Component Description ........................................ 593 On Board Diagnosis Logic .................................... 593 DTC Confirmation Procedure ............................... 593 Diagnostic Procedure ........................................... 594 DTC P1800 VIAS CONTROL SOLENOID VALVE . 595 Component Description ........................................ 595 CONSULT-II Reference Value in Data Monitor Mode . 595 On Board Diagnosis Logic .................................... 595 DTC Confirmation Procedure ............................... 595 Wiring Diagram ..................................................... 596 Diagnostic Procedure ........................................... 597 Component Inspection .......................................... 598 Removal and Installation ...................................... 599 DTC P1805 BRAKE SWITCH ................................. 600 Revision: July 2006 Description ............................................................ 600 CONSULT-II Reference Value in Data Monitor Mode .600 On Board Diagnosis Logic .................................... 600 DTC Confirmation Procedure ................................ 600 Wiring Diagram ..................................................... 601 Diagnostic Procedure ............................................ 602 Component Inspection .......................................... 604 DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY ..................................................................... 605 Component Description ........................................ 605 CONSULT-II Reference Value in Data Monitor Mode .605 On Board Diagnosis Logic .................................... 605 DTC Confirmation Procedure ................................ 605 Wiring Diagram ..................................................... 607 Diagnostic Procedure ............................................ 608 DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION .............................................................. 611 Description ............................................................ 611 On Board Diagnosis Logic .................................... 611 DTC Confirmation Procedure ................................ 611 Wiring Diagram ..................................................... 612 Diagnostic Procedure ............................................ 614 Component Inspection .......................................... 617 Removal and Installation ....................................... 617 DTC P2118 THROTTLE CONTROL MOTOR ......... 618 Component Description ........................................ 618 On Board Diagnosis Logic .................................... 618 DTC Confirmation Procedure ................................ 618 Wiring Diagram ..................................................... 619 Diagnostic Procedure ............................................ 621 Component Inspection .......................................... 622 Removal and Installation ....................................... 622 DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR ............................................................. 623 Component Description ........................................ 623 On Board Diagnosis Logic .................................... 623 DTC Confirmation Procedure ................................ 623 Diagnostic Procedure ............................................ 624 DTC P2122, P2123 APP SENSOR ......................... 625 Component Description ........................................ 625 CONSULT-II Reference Value in Data Monitor Mode .625 On Board Diagnosis Logic .................................... 625 DTC Confirmation Procedure ................................ 626 Wiring Diagram ..................................................... 627 Diagnostic Procedure ............................................ 629 Component Inspection .......................................... 631 Removal and Installation ....................................... 631 DTC P2127, P2128 APP SENSOR ......................... 632 Component Description ........................................ 632 CONSULT-II Reference Value in Data Monitor Mode .632 On Board Diagnosis Logic .................................... 632 DTC Confirmation Procedure ................................ 633 Wiring Diagram ..................................................... 634 Diagnostic Procedure ............................................ 636 EC-6 2006 Quest Component Inspection ......................................... 639 Removal and Installation ...................................... 639 DTC P2135 TP SENSOR ........................................ 640 Component Description ........................................ 640 CONSULT-II Reference Value in Data Monitor Mode . 640 On Board Diagnosis Logic ................................... 640 DTC Confirmation Procedure ............................... 641 Wiring Diagram .................................................... 642 Diagnostic Procedure ........................................... 644 Component Inspection ......................................... 647 Removal and Installation ...................................... 647 DTC P2138 APP SENSOR ..................................... 648 Component Description ........................................ 648 CONSULT-II Reference Value in Data Monitor Mode . 648 On Board Diagnosis Logic ................................... 648 DTC Confirmation Procedure ............................... 649 Wiring Diagram .................................................... 650 Diagnostic Procedure ........................................... 652 Component Inspection ......................................... 655 Removal and Installation ...................................... 655 DTC P2A00, P2A03 A/F SENSOR 1 ...................... 656 Component Description ........................................ 656 CONSULT-II Reference Value in Data Monitor Mode . 656 On Board Diagnosis Logic ................................... 656 DTC Confirmation Procedure ............................... 657 Wiring Diagram .................................................... 658 Diagnostic Procedure ........................................... 662 Removal and Installation ...................................... 666 ASCD BRAKE SWITCH ......................................... 667 Component Description ........................................ 667 CONSULT-II Reference Value in Data Monitor Mode . 667 Wiring Diagram .................................................... 668 Diagnostic Procedure ........................................... 669 Component Inspection ......................................... 673 ASCD INDICATOR ................................................. 674 Component Description ........................................ 674 CONSULT-II Reference Value in Data Monitor Mode . 674 Wiring Diagram .................................................... 675 Diagnostic Procedure ........................................... 676 ELECTRICAL LOAD SIGNAL ................................ 677 Description ........................................................... 677 CONSULT-II Reference Value in Data Monitor Mode . 677 Diagnostic Procedure ........................................... 677 ELECTRONIC CONTROLLED ENGINE MOUNT . 679 System Description .............................................. 679 CONSULT-II Reference Value in Data Monitor Mode . 679 Revision: July 2006 Wiring Diagram ..................................................... 680 Diagnostic Procedure ........................................... 681 FUEL INJECTOR .................................................... 684 Component Description ........................................ 684 CONSULT-II Reference Value in Data Monitor Mode . 684 Wiring Diagram ..................................................... 685 Diagnostic Procedure ........................................... 686 Component Inspection .......................................... 691 Removal and Installation ...................................... 691 FUEL PUMP ............................................................ 692 Description ............................................................ 692 CONSULT-II Reference Value in Data Monitor Mode . 692 Wiring Diagram ..................................................... 693 Diagnostic Procedure ........................................... 694 Component Inspection .......................................... 697 Removal and Installation ...................................... 697 IGNITION SIGNAL .................................................. 698 Component Description ........................................ 698 Wiring Diagram ..................................................... 699 Diagnostic Procedure ........................................... 704 Component Inspection .......................................... 709 Removal and Installation ...................................... 710 REFRIGERANT PRESSURE SENSOR .................. 711 Component Description ........................................ 711 Wiring Diagram ..................................................... 712 Diagnostic Procedure ........................................... 713 Removal and Installation ...................................... 716 VIAS ........................................................................ 717 Description ............................................................ 717 CONSULT-II Reference Value in Data Monitor Mode . 718 Wiring Diagram ..................................................... 719 Diagnostic Procedure ........................................... 721 Component Inspection .......................................... 725 Removal and Installation ...................................... 725 MIL AND DATA LINK CONNECTOR ...................... 726 Wiring Diagram ..................................................... 726 SERVICE DATA AND SPECIFICATIONS (SDS) .... 728 Fuel Pressure ....................................................... 728 Idle Speed and Ignition Timing ............................. 728 Calculated Load Value .......................................... 728 Mass Air Flow Sensor ........................................... 728 Intake Air Temperature Sensor ............................. 728 Engine Coolant Temperature Sensor ................... 728 EGR Temperature Sensor .................................... 728 Air Fuel Ratio (A/F) Sensor 1 Heater .................... 728 Heated Oxygen sensor 2 Heater .......................... 728 Crankshaft Position Sensor (POS) ....................... 729 Camshaft Position Sensor (PHASE) .................... 729 Throttle Control Motor ........................................... 729 Fuel Injector .......................................................... 729 Fuel Pump ............................................................ 729 EC-7 2006 Quest A EC C D E F G H I J K L M INDEX FOR DTC INDEX FOR DTC DTC No. Index PFP:00024 EBS00QUX NOTE: ● If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . DTC*1 CONSULT-II Items (CONSULT-II screen terms) Reference page 2 ECM*3 U1000 1000* 4 CAN COMM CIRCUIT EC-162 U1001 1001*4 CAN COMM CIRCUIT EC-162 U1010 1010*4 CONTROL UNIT (CAN) EC-165 P0000 0000 NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. — P0011 0011 INT/V TIM CONT-B1 EC-167 P0021 0021 INT/V TIM CONT-B2 EC-167 P0031 0031 A/F SEN1 HTR (B1) EC-172 GST* P0032 0032 A/F SEN1 HTR (B1) EC-172 P0037 0037 HO2S2 HTR (B1) EC-180 P0038 0038 HO2S2 HTR (B1) EC-180 P0051 0051 A/F SEN1 HTR (B2) EC-172 P0052 0052 A/F SEN1 HTR (B2) EC-172 P0057 0057 HO2S2 HTR (B2) EC-180 P0058 0058 HO2S2 HTR (B2) EC-180 P0075 0075 INT/V TIM V/CIR-B1 EC-190 P0081 0081 INT/V TIM V/CIR-B2 EC-190 P0101 0101 MAF SEN/CIRCUIT EC-197 P0102 0102 MAF SEN/CIRCUIT EC-207 P0103 0103 MAF SEN/CIRCUIT EC-207 P0112 0112 IAT SEN/CIRCUIT EC-216 P0113 0113 IAT SEN/CIRCUIT EC-216 P0117 0117 ECT SEN/CIRC EC-221 P0118 0118 ECT SEN/CIRC EC-221 P0122 0122 TP SEN 2/CIRC EC-227 P0123 0123 TP SEN 2/CIRC EC-227 P0125 0125 ECT SENSOR EC-235 P0127 0127 IAT SENSOR EC-239 P0128 0128 THERMSTAT FNCTN EC-242 P0130 0130 A/F SENSOR1 (B1) EC-244 P0131 0131 A/F SENSOR1 (B1) EC-255 P0132 0132 A/F SENSOR1 (B1) EC-265 P0133 0133 A/F SENSOR1 (B1) EC-275 P0137 0137 HO2S2 (B1) EC-288 P0138 0138 HO2S2 (B1) EC-301 Revision: July 2006 EC-8 2006 Quest INDEX FOR DTC DTC*1 CONSULT-II GST*2 Items (CONSULT-II screen terms) ECM*3 Reference page P0139 0139 HO2S2 (B1) EC-318 P0150 0150 A/F SENSOR1 (B2) EC-244 P0151 0151 A/F SENSOR1 (B2) EC-255 P0152 0152 A/F SENSOR1 (B2) EC-265 P0153 0153 A/F SENSOR1 (B2) EC-275 P0157 0157 HO2S2 (B2) EC-288 P0158 0158 HO2S2 (B2) EC-301 P0159 0159 HO2S2 (B2) EC-318 P0171 0171 FUEL SYS-LEAN-B1 EC-331 P0172 0172 FUEL SYS-RICH-B1 EC-343 P0174 0174 FUEL SYS-LEAN-B2 EC-331 P0175 0175 FUEL SYS-RICH-B2 EC-343 P0181 0181 FTT SENSOR EC-355 P0182 0182 FTT SEN/CIRCUIT EC-361 P0183 0183 FTT SEN/CIRCUIT EC-361 P0222 0222 TP SEN 1/CIRC EC-366 P0223 0223 TP SEN 1/CIRC EC-366 P0300 0300 MULTI CYL MISFIRE EC-374 P0301 0301 CYL 1 MISFIRE EC-374 P0302 0302 CYL 2 MISFIRE EC-374 P0303 0303 CYL 3 MISFIRE EC-374 P0304 0304 CYL 4 MISFIRE EC-374 P0305 0305 CYL 5 MISFIRE EC-374 P0306 0306 CYL 6 MISFIRE EC-374 P0327 0327 KNOCK SEN/CIRC-B1 EC-383 P0328 0328 KNOCK SEN/CIRC-B1 EC-383 P0335 0335 CKP SEN/CIRCUIT EC-388 P0340 0340 CMP SEN/CIRC-B1 EC-396 P0345 0345 CMP SEN/CIRC-B2 EC-396 P0400 0400 EGR SYSTEM EC-406 P0403 0403 EGR VOL CON/V CIR EC-414 P0405 0405 EGR TEMP SEN/CIRC EC-421 P0406 0406 EGR TEMP SEN/CIRC EC-421 P0420 0420 TW CATALYST SYS-B1 EC-428 P0430 0430 TW CATALYST SYS-B2 EC-428 P0441 0441 EVAP PURG FLOW/MON EC-434 P0442 0442 EVAP SMALL LEAK EC-439 P0443 0443 PURG VOLUME CONT/V EC-447 P0444 0444 PURG VOLUME CONT/V EC-455 P0445 0445 PURG VOLUME CONT/V EC-455 P0447 0447 VENT CONTROL VALVE EC-462 P0448 0448 VENT CONTROL VALVE EC-469 Revision: July 2006 EC-9 2006 Quest A EC C D E F G H I J K L M INDEX FOR DTC DTC*1 CONSULT-II 2 GST* Items (CONSULT-II screen terms) ECM*3 Reference page P0451 0451 EVAP SYS PRES SEN EC-476 P0452 0452 EVAP SYS PRES SEN EC-479 P0453 0453 EVAP SYS PRES SEN EC-486 P0455 0455 EVAP GROSS LEAK EC-494 P0456 0456 EVAP VERY SML LEAK EC-502 P0460 0460 FUEL LEV SEN SLOSH EC-512 P0461 0461 FUEL LEVEL SENSOR EC-514 P0462 0462 FUEL LEVL SEN/CIRC EC-516 P0463 0463 FUEL LEVL SEN/CIRC EC-516 5 P0500 0500 VEH SPEED SEN/CIRC* P0506 0506 ISC SYSTEM EC-520 P0507 0507 ISC SYSTEM EC-522 P0550 0550 PW ST P SEN/CIRC EC-524 P0603 0603 ECM BACK UP/CIRCUIT EC-529 P0605 0605 ECM EC-533 P0643 0643 SENSOR POWER/CIRC EC-536 0705 PNP SW/CIRC*6 AT-107 P0705 PNP SW/CIRC*7 AT-455 ATF TEMP SEN/CIRC*6 AT-113 ATF TEMP SEN/CIRC*7 AT-461 AT-466 P0710 EC-518 0710 P0711 0711 FLUID TEMP SEN*7 P0717 0717 TURBINE SENSOR*7 AT-471 5 6 P0720 0720 VEH SPD SEN/CIR AT* * AT-119 P0722 0722 VHCL SPEED SEN·AT*7 AT-475 P0725 0725 ENGINE SPEED SIG*6 AT-124 A/T 1ST GR FNCTN*6 AT-128 P0731 0731 A/T 1ST GR FNCTN*7 AT-481 A/T 2ND GR FNCTN*6 AT-133 A/T 2ND GR FNCTN*7 AT-484 6 AT-138 A/T 3RD GR FNCTN*7 AT-490 A/T 4TH GR FNCTN*6 AT-143 A/T 4TH GR FNCTN*7 AT-496 P0732 P0733 P0734 0732 0733 A/T 3RD GR FNCTN* 0734 P0735 0735 A/T 5TH GR FNCTN*7 AT-501 P0740 0740 TCC SOLENOID/CIRC*6 AT-150 0744 A/T TCC S/V FNCTN*6 AT-155 P0744 7 A/T TCC S/V FNCTN* AT-507 L/PRESS SOL/CIRC*6 AT-163 PC SOL A(L/PRESS)*7 AT-510 P0745 Revision: July 2006 0745 EC-10 2006 Quest INDEX FOR DTC DTC*1 CONSULT-II GST*2 P0750 P0755 P0760 Items (CONSULT-II screen terms) ECM*3 0750 Reference page SFT SOL A/CIRC*6 AT-169 SHIFT SOL A*7 AT-515 SFT SOL B/CIRC*6 AT-174 SHIFT SOL B*7 AT-520 0755 0760 SHIFT SOL C*7 0762 SFT SOL C STUCK ON* AT-530 P0765 0765 SHIFT SOL D*7 AT-535 P0770 0770 SHIFT SOL E*7 AT-540 P0775 0775 PC SOL B(SFT/PRS)*7 AT-545 P0780 0780 SHIFT*7 AT-550 P0795 0795 PC SOL C(TCC&SFT)*7 AT-554 P0797 0797 PC SOL C STC ON*7 AT-559 P0850 0850 P-N POS SW/CIRCUIT EC-542 P0882 0882 TCM POWER INPT SIG*7 AT-568 P1148 1148 CLOSED LOOP-B1 EC-551 P1168 1168 CLOSED LOOP-B2 EC-551 P1211 1211 TCS C/U FUNCTN EC-552 P1212 1212 TCS/CIRC EC-553 P1217 1217 ENG OVER TEMP EC-554 P1225 1225 CTP LEARNING EC-566 P1226 1226 CTP LEARNING EC-568 P1402 1402 EGR SYSTEM EC-570 P1564 1564 ASCD SW EC-577 P1572 1572 ASCD BRAKE SW EC-585 P1574 1574 ASCD VHL SPD SEN EC-593 P1610 - P1615 1610 - 1615 NATS MALFUNCTION BL-210 6 P1705 1705 TP SEN/CIRC A/T* P1760 1760 O/R CLTCH SOL/CIRC*6 AT-181 P1800 1800 VIAS S/V CIRC EC-595 P1805 1805 BRAKE SW/CIRCUIT EC-600 P2100 2100 ETC MOT PWR EC-605 P2101 2101 ETC FUNCTION/CIRC EC-611 P2103 2103 ETC MOT PWR EC-605 P2118 2118 ETC MOT EC-618 P2119 2119 ETC ACTR EC-623 P2122 2122 APP SEN 1/CIRC EC-625 P2123 2123 APP SEN 1/CIRC EC-625 P2127 2127 APP SEN 2/CIRC EC-632 P2128 2128 APP SEN 2/CIRC EC-632 P2135 2135 TP SENSOR EC-640 EC-11 EC C AT-525 7 P0762 Revision: July 2006 A AT-179 2006 Quest D E F G H I J K L M INDEX FOR DTC DTC*1 CONSULT-II 2 GST* Items (CONSULT-II screen terms) ECM*3 Reference page P2138 2138 APP SENSOR EC-648 P2A00 2A00 A/F SENSOR (B1) EC-656 P2A03 2A03 A/F SENSOR (B2) EC-656 *1: 1st trip DTC No. is the same as DTC No. *2: This number is prescribed by SAE J2012. *3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN. *4: The troubleshooting for this DTC needs CONSULT-II. *5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates. *6: 4-speed A/T models *7: 5-speed A/T models Revision: July 2006 EC-12 2006 Quest INDEX FOR DTC Alphabetical Index EBS00QUY A NOTE: ● If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer EC to EC-165, "DTC U1010 CAN COMMUNICATION" . DTC*1 Items (CONSULT-II screen terms) CONSULT-II GST*2 C Reference page ECM*3 A/F SENSOR1 (B1) P0130 0130 EC-244 A/F SENSOR1 (B1) P0131 0131 EC-255 A/F SENSOR1 (B1) P0132 0132 EC-265 A/F SENSOR1 (B1) P0133 0133 EC-275 A/F SENSOR1 (B1) P0150 0150 EC-244 A/F SENSOR1 (B2) P0151 0151 EC-255 A/F SENSOR1 (B2) P0152 0152 EC-265 A/F SENSOR1 (B2) P0153 0153 EC-275 A/F SENSOR1 (B2) P2A00 2A00 EC-656 A/F SENSOR1 (B2) P2A03 2A03 EC-656 A/F SEN1 HTR (B1) P0031 0031 EC-172 A/F SEN1 HTR (B1) P0032 0032 EC-172 A/F SEN1 HTR (B2) P0051 0051 EC-172 A/F SEN1 HTR (B2) P0052 0052 EC-172 P0731 0731 A/T 1ST GR FNCTN*6 AT-481 A/T 2ND GR FNCTN*6 F G H I J AT-133 P0732 0732 A/T 2ND GR FNCTN*7 AT-484 6 AT-138 P0733 AT-490 A/T 4TH GR FNCTN*6 AT-143 P0734 K 0733 A/T 3RD GR FNCTN*7 L 0734 A/T 4TH GR FNCTN*7 AT-496 A/T 5HT GR FNCTN*7 A/T TCC S/V FNCTN*6 P0735 0735 P0744 0744 AT-501 AT-155 A/T TCC S/V FNCTN*7 AT-507 APP SEN 1/CIRC P2122 2122 EC-625 APP SEN 1/CIRC P2123 2123 EC-625 APP SEN 2/CIRC P2127 2127 EC-632 APP SEN 2/CIRC P2128 2128 EC-632 APP SENSOR P2138 2138 EC-648 ASCD BRAKE SW P1572 1572 EC-585 ASCD SW P1564 1564 EC-577 P1574 1574 EC-593 P0710 0710 ASCD VHL SPD SEN 6 ATF TEMP SEN/CIRC* AT-113 ATF TEMP SEN/CIRC*7 Revision: July 2006 E AT-128 A/T 1ST GR FNCTN*7 A/T 3RD GR FNCTN* D AT-461 EC-13 2006 Quest M INDEX FOR DTC Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST* BRAKE SW/CIRCUIT 2 P1805 Reference page ECM*3 1805 4 EC-600 CAN COMM CIRCUIT U1000 1000* EC-162 CAN COMM CIRCUIT U1001 1001*4 EC-162 CKP SEN/CIRCUIT P0335 0335 EC-388 CLOSED LOOP-B1 P1148 1148 EC-551 CLOSED LOOP-B2 P1168 1168 EC-551 CMP SEN/CIRC-B1 P0340 0340 EC-396 CMP SEN/CIRC-B2 P0345 0345 EC-396 4 CONTROL UNIT (CAN) U1010 1010* EC-165 CTP LEARNING P1225 1225 EC-566 CTP LEARNING P1226 1226 EC-568 CYL 1 MISFIRE P0301 0301 EC-374 CYL 2 MISFIRE P0302 0302 EC-374 CYL 3 MISFIRE P0303 0303 EC-374 CYL 4 MISFIRE P0304 0304 EC-374 CYL 5 MISFIRE P0305 0305 EC-374 CYL 6 MISFIRE P0306 0306 EC-374 ECM P0605 0605 EC-533 ECM BACK UP/CIRCUIT P0603 0603 EC-529 ECT SEN/CIRC P0117 0117 EC-221 ECT SEN/CIRC P0118 0118 EC-221 ECT SENSOR P0125 0125 EC-235 EGR SYSTEM P0400 0400 EC-406 EGR SYSTEM P1402 1402 EC-570 EGR TEMP SEN/CIRC P0405 0405 EC-421 EGR TEMP SEN/CIRC P0406 0406 EC-421 EGR VOL CON/V CIR P0403 0403 EC-414 ENG OVER TEMP P1217 1217 EC-554 P0725 0725 AT-124 ETC ACTR P2119 2119 EC-623 ETC FUNCTION/CIRC P2101 2101 EC-611 ETC MOT P2118 2118 EC-618 ETC MOT PWR P2103 2103 EC-605 ETC MOT PWR P2100 2100 EC-605 EVAP GROSS LEAK P0455 0455 EC-494 EVAP PURG FLOW/MON P0441 0441 EC-434 EVAP SMALL LEAK P0442 0442 EC-439 EVAP SYS PRES SEN P0451 0451 EC-476 EVAP SYS PRES SEN P0452 0452 EC-479 EVAP SYS PRES SEN P0453 0453 EC-486 EVAP VERY SML LEAK P0456 0456 EC-502 P0711 0711 AT-466 ENGINE SPEED FLUID TEMP SIG*6 SEN*7 Revision: July 2006 EC-14 2006 Quest INDEX FOR DTC Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST*2 Reference page FTT SEN/CIRCUIT P0182 0182 EC-361 FTT SEN/CIRCUIT P0183 0183 EC-361 FTT SENSOR P0181 0181 EC-355 FUEL LEV SEN SLOSH P0460 0460 EC-512 FUEL LEVEL SENSOR P0461 0461 EC-514 FUEL LEVL SEN/CIRC P0462 0462 EC-516 FUEL LEVL SEN/CIRC P0463 0463 EC-516 FUEL SYS-LEAN-B1 P0171 0171 EC-331 FUEL SYS-LEAN-B2 P0174 0174 EC-331 FUEL SYS-RICH-B1 P0172 0172 EC-343 FUEL SYS-RICH-B2 P0175 0175 EC-343 HO2S2 (B1) P0137 0137 EC-288 HO2S2 (B1) P0138 0138 EC-301 HO2S2 (B1) P0139 0139 EC-318 HO2S2 (B2) P0157 0157 EC-288 HO2S2 (B2) P0158 0158 EC-301 HO2S2 (B2) P0159 0159 EC-318 HO2S2 HTR (B1) P0037 0037 EC-180 HO2S2 HTR (B1) P0038 0038 EC-180 HO2S2 HTR (B2) P0057 0057 EC-180 HO2S2 HTR (B2) P0058 0058 EC-180 IAT SEN/CIRCUIT P0112 0112 EC-216 IAT SEN/CIRCUIT P0113 0113 EC-216 IAT SENSOR P0127 0127 EC-239 INT/V TIM CONT-B1 P0011 0011 EC-167 INT/V TIM CONT-B2 P0021 0021 EC-167 INT/V TIM V/CIR-B1 P0075 0075 EC-190 INT/V TIM V/CIR-B2 P0081 0081 EC-190 ISC SYSTEM P0506 0506 EC-520 ISC SYSTEM P0507 0507 EC-522 KNOCK SEN/CIRC-B1 P0327 0327 EC-383 KNOCK SEN/CIRC-B1 P0328 0328 EC-383 6 P0745 0745 AT-163 MAF SEN/CIRCUIT P0101 0101 EC-197 MAF SEN/CIRCUIT P0102 0102 EC-207 L/PRESS SOL/CIRC* MAF SEN/CIRCUIT P0103 0103 EC-207 MULTI CYL MISFIRE P0300 0300 EC-374 P1610 - P1615 1610 - 1615 BL-210 NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. P0000 0000 — O/R CLTCH SOL/CIRC*6 P1760 1760 AT-181 P0745 0745 AT-510 NATS MALFUNCTION PC SOL A(L/PRESS)* Revision: July 2006 7 EC-15 A ECM*3 2006 Quest EC C D E F G H I J K L M INDEX FOR DTC Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST* 7 2 Reference page ECM*3 PC SOL B(SFT/PRS)* P0775 0775 AT-545 PC SOL C(TCC&SFT)*7 P0795 0795 AT-554 PC SOL C STC ON*7 P0797 0797 AT-559 P-N POS SW/CIRCUIT P0850 0850 EC-542 P0705 0705 PNP SW/CIRC*6 AT-107 PNP SW/CIRC*7 AT-455 PURG VOLUME CONT/V P0443 0443 EC-447 PURG VOLUME CONT/V P0444 0444 EC-455 PURG VOLUME CONT/V P0445 0445 EC-455 PW ST P SEN/CIRC P0550 0550 EC-524 SENSOR POWER/CIRC P0643 0643 EC-536 SFT SOL A/CIRC*6 P0750 0750 AT-169 SFT SOL B/CIRC*6 P0755 0755 AT-174 SFT SOL C STUCK ON*7 P0762 0762 AT-530 SHIFT*7 P0780 0780 AT-550 A*7 P0750 0750 AT-515 SHIFT SOL B*7 P0755 0755 AT-520 SHIFT SOL C*7 P0760 0760 AT-525 SHIFT SOL D*7 P0765 0765 AT-535 SHIFT SOL E*7 P0770 0770 AT-540 TCC SOLENOID/CIRC*6 P0740 0740 AT-150 TCM POWER INPT SIG*7 P0882 0882 AT-568 TCS C/U FUNCTN P1211 1211 EC-552 TCS/CIRC P1212 1212 EC-553 THERMSTAT FNCTN P0128 0128 EC-242 TP SEN/CIRC A/T*6 P1705 1705 AT-179 TP SEN 1/CIRC P0222 0222 EC-366 TP SEN 1/CIRC P0223 0223 EC-366 TP SEN 2/CIRC P0122 0122 EC-227 TP SEN 2/CIRC P0123 0123 EC-227 TP SENSOR P2135 2135 EC-640 TURBINE SENSOR*7 P0717 0717 AT-471 TW CATALYST SYS-B1 P0420 0420 EC-428 TW CATALYST SYS-B2 P0430 0430 EC-428 VEH SPD SEN/CIR AT*5 *6 P0720 0720 AT-119 VEH SPEED SEN/CIRC*5 P0500 0500 EC-518 VENT CONTROL VALVE P0447 0447 EC-462 VENT CONTROL VALVE P0448 0448 EC-469 SHIFT SOL Revision: July 2006 EC-16 2006 Quest INDEX FOR DTC Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST*2 Reference page A ECM*3 VHCL SPEED SEN·AT*7 P0722 0722 AT-475 VIAS S/V CIRC P1800 1800 EC-595 *1: 1st trip DTC No. is the same as DTC No. *2: This number is prescribed by SAE J2012. *3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN. *4: The troubleshooting for this DTC needs CONSULT-II. *5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates. *6: 4-speed A/T models *7: 5-speed A/T models EC C D E F G H I J K L M Revision: July 2006 EC-17 2006 Quest PRECAUTIONS PRECAUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” EBS00QUZ The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS and SB section of this Service Manual. WARNING: ● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. ● Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS section. ● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. On Board Diagnostic (OBD) System of Engine and A/T EBS00QV0 The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the driver of a malfunction causing emission deterioration. CAUTION: ● Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will cause the MIL to light up. ● Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease, dirt, bent terminals, etc.) ● Certain systems and components, especially those related to OBD, may use a new style slidelocking type harness connector. For description and how to disconnect, refer to PG-66, "HARNESS CONNECTOR" . ● Be sure to route and secure the harnesses properly after work. The interference of the harness with a bracket, etc. may cause the MIL to light up due to the short circuit. ● Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system, etc. ● Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and TCM (Transmission control module) before returning the vehicle to the customer. Precaution ● ● ● ● EBS00QV1 Always use a 12 volt battery as power source. Do not attempt to disconnect battery cables while engine is running. Before connecting or disconnecting the ECM harness connector, turn ignition switch OFF and disconnect battery ground cable. Failure to do so may damage the ECM because battery voltage is applied to ECM even if ignition switch is turned OFF. Before removing parts, turn ignition switch OFF and then disconnect battery ground cable. SEF289H Revision: July 2006 EC-18 2006 Quest PRECAUTIONS ● ● ● – – – – – – ● Do not disassemble ECM. If a battery cable is disconnected, the memory will return to the ECM value. The ECM will now start to self-control at its initial value. Engine operation can vary slightly when the terminal is disconnected. However, this is not an indication of a malfunction. Do not replace parts because of a slight variation. If the battery is disconnected, the following emissionrelated diagnostic information will be lost within 24 hours. Diagnostic trouble codes 1st trip diagnostic trouble codes Freeze frame data 1st trip freeze frame data System readiness test (SRT) codes Test values A EC C PBIB1164E D E F When connecting ECM harness connector, fasten it securely with levers as far as they will go as shown in the figure. G H PBIB1512E ● ● ● ● ● ● ● ● ● ● ● When connecting or disconnecting pin connectors into or from ECM, take care not to damage pin terminals (bend or break). Make sure that there are not any bends or breaks on ECM pin terminal, when connecting pin connectors. Securely connect ECM harness connectors. A poor connection can cause an extremely high (surge) voltage to develop in coil and condenser, thus resulting in damage to ICs. Keep engine control system harness at least 10 cm (4 in) PBIB0090E away from adjacent harness, to prevent engine control system malfunctions due to receiving external noise, degraded operation of ICs, etc. Keep engine control system parts and harness dry. Before replacing ECM, perform ECM Terminals and Reference Value inspection and make sure ECM functions properly. Refer to EC-112, "ECM Terminals and Reference Value" . Handle mass air flow sensor carefully to avoid damage. Do not disassemble mass air flow sensor. Do not clean mass air flow sensor with any type of detergent. Do not disassemble electric throttle control actuator. Even a slight leak in the air intake system can cause seriMEF040D ous incidents. Do not shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS). Revision: July 2006 EC-19 2006 Quest I J K L M PRECAUTIONS ● After performing each TROUBLE DIAGNOSIS, perform DTC Confirmation Procedure or Overall Function Check. The DTC should not be displayed in the DTC Confirmation Procedure if the repair is completed. The Overall Function Check should be a good result if the repair is completed. SEF217U ● ● When measuring ECM signals with a circuit tester, never allow the two tester probes to contact. Accidental contact of probes will cause a short circuit and damage the ECM power transistor. Do not use ECM ground terminals when measuring input/ output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. SEF348N ● B1 indicates the bank 1, B2 indicates the bank 2 as shown in the figure. SEC893C Revision: July 2006 EC-20 2006 Quest PRECAUTIONS ● ● Do not operate fuel pump when there is no fuel in lines. Tighten fuel hose clamps to the specified torque. A EC C BBIA0081E D ● ● ● Do not depress accelerator pedal when starting. Immediately after starting, do not rev up engine unnecessarily. Do not rev up engine just prior to shutdown. E F G SEF709Y ● – – – – When installing C.B. ham radio or a mobile phone, be sure to observe the following as it may adversely affect electronic control systems depending on installation location. Keep the antenna as far as possible from the electronic control units. Keep the antenna feeder line more than 20 cm (8 in) away from the harness of electronic controls. Do not let them run parallel for a long distance. Adjust the antenna and feeder line so that the standingwave radio can be kept smaller. Be sure to ground the radio to vehicle body. H I J K SEF708Y L M Revision: July 2006 EC-21 2006 Quest PREPARATION PREPARATION Special Service Tools PFP:00002 EBS00QV2 The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Tool number (Kent-Moore No.) Description Tool name KV10117100 (J-36471-A) Heated oxygen sensor wrench Loosening or tightening heated oxygen sensor with 22 mm (0.87 in) hexagon nut S-NT379 KV10114400 (J-38365) Heated oxygen sensor wrench Loosening or tightening heated oxygen sensor a: 22 mm (0.87 in) S-NT636 (J-44626) Air fuel ratio (A/F) sensor wrench Loosening or tightening air fuel ratio (A/F) sensor 1 LEM054 (J-44321) Fuel pressure gauge kit Checking fuel pressure LEC642 (J-44321-6) Fuel pressure adapter Connecting fuel pressure gauge to quick connector type fuel lines. LBIA0376E (J-45488) Quick connector release Remove fuel tube quick connectors in engine room. PBIC0198E EG17650301 (J-33984-A) Radiator cap tester adapter Adapting radiator cap tester to radiator cap and radiator filler neck a: 28 (1.10) dia. b: 31.4 (1.236) dia. c: 41.3 (1.626) dia. Unit: mm (in) S-NT564 Revision: July 2006 EC-22 2006 Quest PREPARATION Tool number (Kent-Moore No.) Tool name A Description KV109E0010 (J-46209) Break-out box Measuring the ECM signals with a circuit tester EC C S-NT825 KV109E0080 (J-45819) Y-cable adapter Measuring the ECM signals with a circuit tester D E S-NT826 (J-23688) Engine coolant refractometer Checking concentration of ethylene glycol in the engine coolant F G H WBIA0539E I J K L M Revision: July 2006 EC-23 2006 Quest PREPARATION Commercial Service Tools Tool name (Kent-Moore No.) EBS00QV3 Description Leak detector i.e.: (J-41416) Locating the EVAP leak S-NT703 EVAP service port adapter i.e.: (J-41413-OBD) Applying positive pressure through EVAP service port S-NT704 Fuel filler cap adapter i.e.: (MLR-8382) Checking fuel tank vacuum relief valve opening pressure S-NT815 Socket wrench Removing and installing engine coolant temperature sensor S-NT705 Oxygen sensor thread cleaner i.e.: (J-43897-18) (J-43897-12) Reconditioning the exhaust system threads before installing a new oxygen sensor. Use with antiseize lubricant shown below. a: 18 mm diameter with pitch 1.5 mm for Zirconia Oxygen Sensor b: 12 mm diameter with pitch 1.25 mm for Titania Oxygen Sensor AEM488 Lubricating oxygen sensor thread cleaning tool when reconditioning exhaust system threads. Anti-seize lubricant i.e.: (PermatexTM 133AR or equivalent meeting MIL specification MIL-A-907) S-NT779 Revision: July 2006 EC-24 2006 Quest ENGINE CONTROL SYSTEM ENGINE CONTROL SYSTEM System Diagram PFP:23710 A EBS00QV4 EC C D E F G H I J K L M PBIB2506E Revision: July 2006 EC-25 2006 Quest ENGINE CONTROL SYSTEM Multiport Fuel Injection (MFI) System EBS00QV5 INPUT/OUTPUT SIGNAL CHART Sensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Input Signal to ECM ECM function Actuator Engine speed*3 Piston position Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Park/neutral position (PNP) switch Gear position Knock sensor Engine knocking condition Battery Battery voltage*3 Power steering pressure sensor Power steering operation Heated oxygen sensor 2*1 Density of oxygen in exhaust gas Air conditioner switch Air conditioner operation*2 Wheel sensor Vehicle speed*2 Fuel injection & mixture ratio control Fuel injector *1: This sensor is not used to control the engine system. This is used only for the on board diagnosis. *2: This signal is sent to the ECM through CAN communication line. *3: ECM determines the start signal status by the signals of engine speed and battery voltage. SYSTEM DESCRIPTION The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the ECM memory. The program value is preset by engine operating conditions. These conditions are determined by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air flow sensor. VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION In addition, the amount of fuel injected is compensated to improve engine performance under various operating conditions as listed below.● During warm-up ● When starting the engine ● During acceleration ● Hot-engine operation ● When shift lever is changed from N to D ● High-load, high-speed operation ● During deceleration ● During high engine speed operation Revision: July 2006 EC-26 2006 Quest ENGINE CONTROL SYSTEM MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL) A EC C PBIB3020E The mixture ratio feedback system provides the best air-fuel mixture ratio for driveability and emission control. The three way catalyst (Manifold) can then better reduce CO, HC and NOx emissions. This system uses air fuel ratio (A/F) sensor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The ECM adjusts the injection pulse width according to the sensor voltage signal. For more information about air fuel ratio (A/F) sensor 1, refer to EC-255, "DTC P0131, P0151 A/F SENSOR 1" . This maintains the mixture ratio within the range of stoichiometric (ideal air-fuel mixture). This stage is referred to as the closed loop control condition. Heated oxygen sensor 2 is located downstream of the three way catalyst (Manifold). Even if the switching characteristics of air fuel ratio (A/F) sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal from heated oxygen sensor 2. D E F G Open Loop Control The open loop system condition refers to when the ECM detects any of the following conditions. Feedback control stops in order to maintain stabilized fuel combustion. ● Deceleration and acceleration ● High-load, high-speed operation ● Malfunction of A/F sensor 1 or its circuit ● Insufficient activation of A/F sensor 1 at low engine coolant temperature ● High engine coolant temperature ● During warm-up ● After shifting from N to D ● When starting the engine H I J K MIXTURE RATIO SELF-LEARNING CONTROL The mixture ratio feedback control system monitors the mixture ratio signal transmitted from A/F sensor 1. This feedback signal is then sent to the ECM. The ECM controls the basic mixture ratio as close to the theoretical mixture ratio as possible. However, the basic mixture ratio is not necessarily controlled as originally designed. Both manufacturing differences (i.e., mass air flow sensor hot wire) and characteristic changes during operation (i.e., fuel injector clogging) directly affect mixture ratio. Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This is then computed in terms of “injection pulse duration” to automatically compensate for the difference between the two ratios. “Fuel trim” refers to the feedback compensation value compared against the basic injection duration. Fuel trim includes short term fuel trim and long term fuel trim. “Short term fuel trim” is the short-term fuel compensation used to maintain the mixture ratio at its theoretical value. The signal from A/F sensor 1 indicates whether the mixture ratio is RICH or LEAN compared to the theoretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and an increase in fuel volume if it is lean. “Long term fuel trim” is overall fuel compensation carried out long-term to compensate for continual deviation of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences, wear over time and changes in the usage environment. Revision: July 2006 EC-27 2006 Quest L M ENGINE CONTROL SYSTEM FUEL INJECTION TIMING SEF179U Two types of systems are used. Sequential Multiport Fuel Injection System Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used when the engine is running. Simultaneous Multiport Fuel Injection System Fuel is injected simultaneously into all six cylinders twice each engine cycle. In other words, pulse signals of the same width are simultaneously transmitted from the ECM. The six fuel injectors will then receive the signals two times for each engine cycle. This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating. FUEL SHUT-OFF Fuel to each cylinder is cut off during deceleration, operation of the engine at excessively high speeds or operation of the vehicle at excessively high speeds. Electronic Ignition (EI) System EBS00QV6 INPUT/OUTPUT SIGNAL CHART Sensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Input Signal to ECM ECM function Actuator Engine speed*2 Piston position Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Knock sensor Engine knocking Park/neutral position (PNP) switch Gear position Battery Battery voltage*2 Wheel sensor Vehicle speed*1 Ignition timing control Power transistor *1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage. SYSTEM DESCRIPTION Firing order: 1 - 2 - 3 - 4 - 5 - 6 The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the engine. The ignition timing data is stored in the ECM. The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) signal. Computing this information, ignition signals are transmitted to the power transistor. During the following conditions, the ignition timing is revised by the ECM according to the other data stored in the ECM. ● At starting ● During warm-up ● At idle ● At low battery voltage Revision: July 2006 EC-28 2006 Quest ENGINE CONTROL SYSTEM During acceleration The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed A within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition. The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition. EC ● Fuel Cut Control (at No Load and High Engine Speed) EBS00QV7 INPUT/OUTPUT SIGNAL CHART Sensor Input Signal to ECM Park/neutral position (PNP) switch Neutral position Accelerator pedal position sensor Accelerator pedal position Engine coolant temperature sensor Engine coolant temperature Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed Wheel sensor Vehicle speed* ECM function Actuator C D Fuel cut control Fuel injector E *: Signal is sent to the ECM through CAN communication line. F SYSTEM DESCRIPTION If the engine speed is above 1,800 rpm under no load (for example, the shift position is neutral and engine speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed. Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled. NOTE: This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-26 . G H I J K L M Revision: July 2006 EC-29 2006 Quest AIR CONDITIONING CUT CONTROL AIR CONDITIONING CUT CONTROL Input/Output Signal Chart Sensor PFP:23710 EBS00QV8 Input Signal to ECM ECM function Actuator 1 Air conditioner switch Air conditioner ON signal* Accelerator pedal position sensor Accelerator pedal position Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed*2 Engine coolant temperature sensor Engine coolant temperature 2 Battery Battery voltage* Refrigerant pressure sensor Refrigerant pressure Power steering pressure sensor Power steering operation Wheel sensor Vehicle speed*1 Air conditioner cut control Air conditioner relay *1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage. System Description EBS00QV9 This system improves engine operation when the air conditioner is used. Under the following conditions, the air conditioner is turned OFF. ● When the accelerator pedal is fully depressed. ● When cranking the engine. ● At high engine speeds. ● When the engine coolant temperature becomes excessively high. ● When operating power steering during low engine speed or low vehicle speed. ● When engine speed is excessively low. ● When refrigerant pressure is excessively low or high. Revision: July 2006 EC-30 2006 Quest AUTOMATIC SPEED CONTROL DEVICE (ASCD) AUTOMATIC SPEED CONTROL DEVICE (ASCD) System Description PFP:18930 A EBS00QVA INPUT/OUTPUT SIGNAL CHART Sensor ASCD brake switch Input signal to ECM ECM function Actuator EC Brake pedal operation Stop lamp switch Brake pedal operation ASCD steering switch ASCD steering switch operation C ASCD vehicle speed control Park/Neutral position (PNP) switch Gear position Combination meter Vehicle speed* TCM Powertrain revolution* Electric throttle control actuator D *: This signal is sent to the ECM through CAN communication line. E BASIC ASCD SYSTEM Refer to Owner's Manual for ASCD operating instructions. Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/ h (25 MPH) and 144 km/h (89 MPH). ECM controls throttle angle of electric throttle control actuator to regulate engine speed. Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any malfunction occurs in ASCD system, it automatically deactivates control. NOTE: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws. F G H SET OPERATION Press MAIN switch. (The CRUISE indicator in combination meter illuminates.) When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89 MPH), press SET/COAST switch. (Then SET indicator in combination meter illuminates.) I ACCEL OPERATION J If the RESUME/ACCELERATE switch is depressed during cruise control driving, increase the vehicle speed until the switch is released or vehicle speed reaches maximum speed controlled by the system. And then ASCD will keep the new set speed. K CANCEL OPERATION When any of following conditions exist, cruise operation will be canceled. ● CANCEL switch is depressed ● More than 2 switches at ASCD steering switch are depressed at the same time (Set speed will be cleared) ● Brake pedal is depressed ● Shift lever is changed to N, P, R position ● Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed ● VDC/TCS system is operated When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform the driver by blinking indicator lamp. ● Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may blink slowly. When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will stop blinking and the cruise operation will be able to work by depressing SET/COAST switch or RESUME/ ACCELERATE switch. ● Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly. If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle speed memory will be erased. Revision: July 2006 EC-31 2006 Quest L M AUTOMATIC SPEED CONTROL DEVICE (ASCD) COAST OPERATION When the SET/COAST switch is depressed during cruise control driving, decrease vehicle set speed until the switch is released. And then ASCD will keep the new set speed. RESUME OPERATION When the RESUME/ACCELERATE switch is depressed after cancel operation other than depressing MAIN switch is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must meet following conditions. ● Brake pedal is released ● A/T shift lever is in other than P and N positions ● Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH) Component Description EBS00QVB ASCD STEERING SWITCH Refer to EC-577 . ASCD BRAKE SWITCH Refer to EC-585 and EC-667 . STOP LAMP SWITCH Refer toEC-585 , EC-600 and EC-667 . ELECTRIC THROTTLE CONTROL ACTUATOR Refer to EC-605 , EC-611 , EC-618 and EC-623 . ASCD INDICATOR Refer to EC-674 . Revision: July 2006 EC-32 2006 Quest CAN COMMUNICATION CAN COMMUNICATION System Description PFP:23710 A EBS00QVC CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many elec- EC tronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. C Each control unit transmits/receives data but selectively reads required data only. Refer to LAN-24, "CAN COMMUNICATION" , about CAN communication for detail. D E F G H I J K L M Revision: July 2006 EC-33 2006 Quest EVAPORATIVE EMISSION SYSTEM EVAPORATIVE EMISSION SYSTEM Description PFP:14950 EBS00QVD SYSTEM DESCRIPTION PBIB1631E The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister. The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the vapor is stored there when the engine is not operating or when refueling to the fuel tank. The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is proportionally regulated as the air flow increases. EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and idling. Revision: July 2006 EC-34 2006 Quest EVAPORATIVE EMISSION SYSTEM EVAPORATIVE EMISSION LINE DRAWING A EC C D E F G H I J K L M PBIB3073E : From next page 1. Intake manifold collector 4. EVAP canister purge volume control solenoid valve 2. EVAP service port 3. EVAP purge resonator NOTE: Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses. Revision: July 2006 EC-35 2006 Quest EVAPORATIVE EMISSION SYSTEM PBIB3069E : Vehicle front 1. EVAP control system pressure sensor Revision: July 2006 : To previous page 2. EVAP canister vent control valve EC-36 3. EVAP canister 2006 Quest EVAPORATIVE EMISSION SYSTEM Component Inspection EBS00QVE A EVAP CANISTER Check EVAP canister as follows: 1. Block port B . 2. Blow air into port A and check that it flows freely out of port C . 3. Release blocked port B . 4. Apply vacuum pressure to port B and check that vacuum pressure exists at the ports A and C . 5. Block port A and B . 6. Apply pressure to port C and check that there is no leakage. EC C D PBIB1212E FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP) 1. E Wipe clean valve housing. F G H SEF445Y 2. Check valve opening pressure and vacuum. I Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm , 2.22 - 2.90 psi) Vacuum: −6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm2 , −0.87 to −0.48 psi) 2 3. If out of specification, replace fuel filler cap as an assembly. CAUTION: Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on. J K SEF943S L EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to EC-454 and EC-460 . M FUEL TANK TEMPERATURE SENSOR Refer to EC-360 and EC-365 . EVAP CANISTER VENT CONTROL VALVE Refer to EC-467 and EC-474 . EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-478 , EC-485 and EC-493 . Revision: July 2006 EC-37 2006 Quest EVAPORATIVE EMISSION SYSTEM EVAP SERVICE PORT Positive pressure is delivered to the EVAP system through the EVAP service port. If fuel vapor leakage in the EVAP system occurs, use a leak detector to locate the leak. BBIA0320E Removal and Installation EBS00QVF EVAP CANISTER Tighten EVAP canister as shown in the figure. BBIA0666E 1. EVAP control system pressure sensor 2. EVAP canister 4. EVAP canister vent control valve 5. O-ring 3. O-ring EVAP CANISTER VENT CONTROL VALVE 1. Turn EVAP canister vent control valve counterclockwise. 2. Remove the EVAP canister vent control valve. Always replace O-ring with a new one. PBIB1384E How to Detect Fuel Vapor Leakage EBS00QVG CAUTION: ● Never use compressed air or a high pressure pump. Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in EVAP system. NOTE: ● Do not start engine. ● Improper installation of EVAP service port adapter to the EVAP service port may cause a leak. ● Revision: July 2006 EC-38 2006 Quest EVAPORATIVE EMISSION SYSTEM WITH CONSULT-II 1. 2. 3. 4. 5. A Attach the EVAP service port adapter securely to the EVAP service port. Also attach the pressure pump and hose to the EVAP service port adapter. Turn ignition switch ON. Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT MODE” with CONSULT-II. Touch “START”. A bar graph (Pressure indicating display) will appear on the screen. EC C D E PEF838U 6. 7. Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar graph. Remove EVAP service port adapter and hose with pressure pump. F G H PEF917U 8. Locate the leak using a leak detector. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . I J K L SEF200U M WITHOUT CONSULT-II 1. 2. Attach the EVAP service port adapter securely to the EVAP service port. Also attach the pressure pump with pressure gauge to the EVAP service port adapter. SEF462UA Revision: July 2006 EC-39 2006 Quest EVAPORATIVE EMISSION SYSTEM 3. Apply battery voltage between the terminals of EVAP canister vent control valve (2) to make a closed EVAP system. BBIA0664E : Vehicle front 4. 5. 6. 1. EVAP control system pressure sensor 2. EVAP canister To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm2 , 0.2 to 0.4 psi). Remove EVAP service port adapter and hose with pressure pump. Locate the leak using a leak detector. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . Revision: July 2006 EC-40 2006 Quest ON BOARD REFUELING VAPOR RECOVERY (ORVR) ON BOARD REFUELING VAPOR RECOVERY (ORVR) System Description PFP:00032 A EBS00QVH EC C D E F PBIB1387E From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere. When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged during driving. WARNING: When conducting inspections below, be sure to observe the following: ● Put a “CAUTION: INFLAMMABLE” sign in workshop. ● Do not smoke while servicing fuel system. Keep open flames and sparks away from work area. ● Be sure to furnish the workshop with a CO2 fire extinguisher. CAUTION: ● Before removing fuel line parts, carry out the following procedures: – Put drained fuel in an explosion-proof container and put lid on securely. – Release fuel pressure from fuel line. Refer to EC-84, "FUEL PRESSURE RELEASE" . – Disconnect battery ground cable. ● Always replace O-ring when the fuel gauge retainer is removed. ● Do not kink or twist hose and tube when they are installed. ● Do not tighten hose and clamps excessively to avoid damaging hoses. ● After installation, run engine and check for fuel leaks at connection. ● Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically. Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire. Revision: July 2006 EC-41 2006 Quest G H I J K L M ON BOARD REFUELING VAPOR RECOVERY (ORVR) Diagnostic Procedure EBS00QVI SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG. 1. CHECK EVAP CANISTER 1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. 2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.1 kg (4.6 lb). OK or NG OK >> GO TO 2. NG >> GO TO 3. 2. CHECK IF EVAP CANISTER SATURATED WITH WATER Does water drain from the EVAP canister? Yes or No Yes >> GO TO 3. No >> GO TO 5. PBIB1381E 3. REPLACE EVAP CANISTER Replace EVAP canister with a new one. >> GO TO 4. 4. DETECT MALFUNCTIONING PART Check the EVAP hose between EVAP canister and vehicle frame separator for clogging or poor connection. >> Repair or replace EVAP hose. 5. CHECK REFUELING EVAP VAPOR CUT VALVE Refer to EC-45, "Component Inspection" . OK or NG OK >> INSPECTION END NG >> Replace refueling EVAP vapor cut valve with fuel tank. Revision: July 2006 EC-42 2006 Quest ON BOARD REFUELING VAPOR RECOVERY (ORVR) SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG WHILE REFUELING. A 1. CHECK EVAP CANISTER Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor EC attached. 2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. C The weight should be less than 2.1 kg (4.6 lb). OK or NG OK >> GO TO 2. D NG >> GO TO 3. 1. 2. CHECK IF EVAP CANISTER SATURATED WITH WATER E Does water drain from the EVAP canister? Yes or No Yes >> GO TO 3. No >> GO TO 5. F G H PBIB1381E 3. REPLACE EVAP CANISTER I Replace EVAP canister with a new one. J >> GO TO 4. 4. DETECT MALFUNCTIONING PART K Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection. L >> Repair or replace EVAP hose. 5. CHECK VENT HOSES AND VENT TUBES M Check hoses and tubes between EVAP canister and refueling EVAP vapor cut valve for clogging, kink, looseness and improper connection. OK or NG OK >> GO TO 6. NG >> Repair or replace hoses and tubes. 6. CHECK FILLER NECK TUBE Check recirculation line for clogging, dents and cracks. OK or NG OK >> GO TO 7. NG >> Replace filler neck tube. Revision: July 2006 EC-43 2006 Quest ON BOARD REFUELING VAPOR RECOVERY (ORVR) 7. CHECK REFUELING EVAP VAPOR CUT VALVE Refer to EC-45, "Component Inspection" . OK or NG OK >> GO TO 8. NG >> Replace refueling EVAP vapor cut valve with fuel tank. 8. CHECK FUEL FILLER TUBE Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks. OK or NG OK >> GO TO 9. NG >> Replace fuel filler tube. 9. CHECK ONE-WAY FUEL VALVE-I Check one-way valve for clogging. OK or NG OK >> GO TO 10. NG >> Repair or replace one-way fuel valve with fuel tank. 10. CHECK ONE-WAY FUEL VALVE-II 1. 2. 3. Make sure that fuel is drained from the tank. Remove fuel filler tube and hose. Check one-way fuel valve for operation as follows. When a stick is inserted, the valve should open, when removing stick it should close. Do not drop any material into the tank. OK or NG OK >> INSPECTION END NG >> Replace fuel filler tube or replace one-way fuel valve with fuel tank. SEF665U Revision: July 2006 EC-44 2006 Quest ON BOARD REFUELING VAPOR RECOVERY (ORVR) Component Inspection EBS00QVJ A REFUELING EVAP VAPOR CUT VALVE With CONSULT-II 1. 2. a. b. c. 3. 4. a. b. c. d. Remove fuel tank. Refer to FL-8, "FUEL TANK" . EC Drain fuel from the tank as follows: Remove fuel feed hose located on the fuel gauge retainer. Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other C side to a fuel container. Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II. Check refueling EVAP vapor cut valve for being stuck to close as follows. D Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that the air flows freely into the tank. Check refueling EVAP vapor cut valve for being stuck to open as follows. E Connect vacuum pump to hose end. Remove fuel gauge retainer with fuel gauge unit. Always replace O-ring with new one. F Put fuel tank upside down. Apply vacuum pressure to hose end [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel gauge retainer remaining open and check that the pressure is applicable. G H I J K BBIA0248E L Without CONSULT-II 1. 2. a. b. 3. 4. a. b. c. Remove fuel tank. Refer to FL-8, "FUEL TANK" . Drain fuel from the tank as follows: Remove fuel gauge retainer. Drain fuel from the tank using a handy pump into a fuel container. Check refueling EVAP vapor cut valve for being stuck to close as follows. Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that the air flows freely into the tank. Check refueling EVAP vapor cut valve for being stuck to open as follows. Connect vacuum pump to hose end. Remove fuel gauge retainer with fuel gauge unit. Always replace O-ring with new one. Put fuel tank upside down. Revision: July 2006 EC-45 2006 Quest M ON BOARD REFUELING VAPOR RECOVERY (ORVR) d. Apply vacuum pressure to hose end [−13.3 kPa (−100 mmHg, −3.94 inHg)] with fuel gauge retainer remaining open and check that the pressure is applicable. BBIA0248E Revision: July 2006 EC-46 2006 Quest POSITIVE CRANKCASE VENTILATION POSITIVE CRANKCASE VENTILATION Description PFP:11810 A EBS00QVK SYSTEM DESCRIPTION EC C D E F G SEC921C This system returns blow-by gas to the intake manifold. The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection in the reverse direction. On vehicles with an excessively high blow-by, the valve does not meet the requirement. This is because some of the flow will go through the hose connection to the air inlet tubes under all conditions. H I J K L PBIB1588E Component Inspection EBS00QVL PCV (POSITIVE CRANKCASE VENTILATION) VALVE With engine running at idle, remove PCV valve from rocker cover. A properly working valve makes a hissing noise as air passes through it. A strong vacuum should be felt immediately when a finger is placed over valve inlet. PBIB1589E Revision: July 2006 EC-47 2006 Quest M POSITIVE CRANKCASE VENTILATION PCV VALVE VENTILATION HOSE 1. 2. Check hoses and hose connections for leaks. Disconnect all hoses and clean with compressed air. If any hose cannot be freed of obstructions, replace. S-ET277 Revision: July 2006 EC-48 2006 Quest NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS) NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS) Description ● ● ● PFP:25386 A EBS00QVM If the security indicator lights up with the ignition switch in the ON position or “NATS MALFUNCTION” is displayed on EC “SELF-DIAG RESULTS” screen, perform self-diagnostic results mode with CONSULT-II using NATS program card. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer SysC tem-NATS)" . Confirm no self-diagnostic results of NVIS (NATS) is displayed before touching “ERASE” in “SELF-DIAG RESULTS” D mode with CONSULT-II. When replacing ECM, initialization of NVIS (NATS) system SEF543X and registration of all NVIS (NATS) ignition key IDs must be carried out with CONSULT-II using NATS program card. E Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of NVIS (NATS) initialization and all NVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual, IVIS/NVIS. F G H I J K L M Revision: July 2006 EC-49 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM ON BOARD DIAGNOSTIC (OBD) SYSTEM Introduction PFP:00028 EBS00QVN The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actuators. The ECM also records various emission-related diagnostic information including: Emission-related diagnostic information SAE Mode Diagnostic Trouble Code (DTC) Service $03 of SAE J1979 Freeze Frame data Service $02 of SAE J1979 System Readiness Test (SRT) code Service $01 of SAE J1979 1st Trip Diagnostic Trouble Code (1st Trip DTC) Service $07 of SAE J1979 1st Trip Freeze Frame data Test values and Test limits Service $06 of SAE J1979 Calibration ID Service $09 of SAE J1979 The above information can be checked using procedures listed in the table below. ×: Applicable —: Not applicable DTC 1st trip DTC Freeze Frame data 1st trip Freeze Frame data SRT status SRT code Test value CONSULT-II × × × × × × — GST × × × — × × × ECM × ×* — — × — — *: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other. The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-96, "Fail-safe Chart" .) Two Trip Detection Logic EBS00QVO When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the ECM memory. The MIL will not light up at this stage. <1st trip> If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL, and store DTC and Freeze Frame data, even in the 1st trip, as shown below. ×: Applicable MIL DTC 1st trip Items —: Not applicable 1st trip DTC 2nd trip 1st trip displaying 2nd trip displaying 1st trip displaying 2nd trip displaying — — — × — × — — × — — × — — × — — — — — × — × × — Blinking Lighting up Blinking Lighting up Misfire (Possible three way catalyst damage) — DTC: P0300 - P0306 is being detected × — — Misfire (Possible three way catalyst damage) — DTC: P0300 - P0306 is being detected — — One trip detection diagnoses (Refer to EC-51, "EMISSIONRELATED DIAGNOSTIC INFORMATION ITEMS" .) — Except above — When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is malfunction on engine control system. Revision: July 2006 EC-50 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means of operating fail-safe function. The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands the driver to repair the malfunction. Engine operating condition in fail-safe mode EBS00QVP C EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS DTC*1 CONSULT-II GST*2 ×: Applicable —: Not applicable SRT code Test value/ Test limit (GST only) Trip MIL lighting up Reference page D E ECM*3 U1000 1000*4 — — 1 × EC-162 CAN COMM CIRCUIT U1001 1001* 4 — — 2 — EC-162 CONTROL UNIT (CAN) U1010 1010*4 — — 1 × EC-165 NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. P0000 0000 — — — Flashing*8 EC-60 INT/V TIM CONT-B1 P0011 0011 — — 2 × EC-167 INT/V TIM CONT-B2 P0021 0021 — — 2 × EC-167 A/F SEN1 HTR (B1) P0031 0031 — × 2 × EC-172 A/F SEN1 HTR (B1) P0032 0032 — × 2 × EC-172 HO2S2 HTR (B1) P0037 0037 — × 2 × EC-180 HO2S2 HTR (B1) P0038 0038 — × 2 × EC-180 A/F SEN1 HTR (B2) P0051 0051 — × 2 × EC-172 A/F SEN1 HTR (B2) P0052 0052 — × 2 × EC-172 HO2S2 HTR (B2) P0057 0057 — × 2 × EC-180 HO2S2 HTR (B2) P0058 0058 — × 2 × EC-180 INT/V TIM V/CIR-B1 P0075 0075 — — 2 × EC-190 INT/V TIM V/CIR-B2 P0081 0081 — — 2 × EC-190 MAF SEN/CIRCUIT P0101 0101 — — 2 × EC-197 MAF SEN/CIRCUIT P0102 0102 — — 1 × EC-207 MAF SEN/CIRCUIT P0103 0103 — — 1 × EC-207 IAT SEN/CIRCUIT P0112 0112 — — 2 × EC-216 IAT SEN/CIRCUIT P0113 0113 — — 2 × EC-216 ECT SEN/CIRC P0117 0117 — — 1 × EC-221 ECT SEN/CIRC P0118 0118 — — 1 × EC-221 TP SEN 2/CIRC P0122 0122 — — 1 × EC-227 TP SEN 2/CIRC P0123 0123 — — 1 × EC-227 ECT SENSOR P0125 0125 — — 2 × EC-235 IAT SENSOR P0127 0127 — — 2 × EC-239 THERMSTAT FNCTN P0128 0128 — — 2 × EC-242 CAN COMM CIRCUIT A/F SENSOR1 (B1) P0130 0130 — × 2 × EC-244 A/F SENSOR1 (B1) P0131 0131 — × 2 × EC-255 A/F SENSOR1 (B1) P0132 0132 — × 2 × EC-265 A/F SENSOR1 (B1) P0133 0133 × × 2 × EC-275 HO2S2 (B1) P0137 0137 × × 2 × EC-288 Revision: July 2006 EC Engine speed will not rise more than 2,500 rpm due to the fuel cut Emission-related Diagnostic Information Items (CONSULT-II screen terms) A EC-51 2006 Quest F G H I J K L M ON BOARD DIAGNOSTIC (OBD) SYSTEM Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST*2 SRT code ECM*3 Test value/ Test limit (GST only) Trip MIL lighting up Reference page HO2S2 (B1) P0138 0138 — × 2 × EC-301 HO2S2 (B1) P0139 0139 × × 2 × EC-318 A/F SENSOR1 (B2) P0150 0150 — × 2 × EC-244 A/F SENSOR1 (B2) P0151 0151 — × 2 × EC-255 A/F SENSOR1 (B2) P0152 0152 — × 2 × EC-265 A/F SENSOR1 (B2) P0153 0153 × × 2 × EC-275 HO2S2 (B2) P0157 0157 × × 2 × EC-288 HO2S2 (B2) P0158 0158 — × 2 × EC-301 HO2S2 (B2) P0159 0159 × × 2 × EC-318 FUEL SYS-LEAN-B1 P0171 0171 — — 2 × EC-331 FUEL SYS-RICH-B1 P0172 0172 — — 2 × EC-343 FUEL SYS-LEAN-B2 P0174 0174 — — 2 × EC-331 FUEL SYS-RICH-B2 P0175 0175 — — 2 × EC-343 FTT SENSOR P0181 0181 — — 2 × EC-355 FTT SEN/CIRCUIT P0182 0182 — — 2 × EC-361 FTT SEN/CIRCUIT P0183 0183 — — 2 × EC-361 TP SEN 1/CIRC P0222 0222 — — 1 × EC-366 TP SEN 1/CIRC P0223 0223 — — 1 × EC-366 MULTI CYL MISFIRE P0300 0300 — — 2 × EC-374 CYL 1 MISFIRE P0301 0301 — — 2 × EC-374 CYL 2 MISFIRE P0302 0302 — — 2 × EC-374 CYL 3 MISFIRE P0303 0303 — — 2 × EC-374 CYL 4 MISFIRE P0304 0304 — — 2 × EC-374 CYL 5 MISFIRE P0305 0305 — — 2 × EC-374 CYL 6 MISFIRE P0306 0306 — — 2 × EC-374 KNOCK SEN/CIRC-B1 P0327 0327 — — 2 — EC-383 KNOCK SEN/CIRC-B1 P0328 0328 — — 2 — EC-383 CKP SEN/CIRCUIT P0335 0335 — — 2 × EC-388 CMP SEN/CIRC-B1 P0340 0340 — — 2 × EC-396 CMP SEN/CIRC-B2 P0345 0345 — — 2 × EC-396 EGR SYSTEM P0400 0400 × × 2 × EC-406 EGR VOL CON/V CIR P0403 0403 — — 1 × EC-414 EGR TEMP SEN/ CIRC P0405 0405 — — 2 × EC-421 EGR TEMP SEN/ CIRC P0406 0406 — — 2 × EC-421 TW CATALYST SYS-B1 P0420 0420 × × 2 × EC-428 TW CATALYST SYS-B2 P0430 0430 × × 2 × EC-428 EVAP PURG FLOW/MON P0441 0441 × × 2 × EC-434 EVAP SMALL LEAK P0442 0442 × × 2 × EC-439 PURG VOLUME CONT/V P0443 0443 — — 2 × EC-447 PURG VOLUME CONT/V P0444 0444 — — 2 × EC-455 PURG VOLUME CONT/V P0445 0445 — — 2 × EC-455 VENT CONTROL VALVE P0447 0447 — — 2 × EC-462 Revision: July 2006 EC-52 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST*2 SRT code Test value/ Test limit (GST only) Trip MIL lighting up Reference page A EC ECM*3 VENT CONTROL VALVE P0448 0448 — — 2 × EC-469 EVAP SYS PRES SEN P0451 0451 — — 2 × EC-476 EVAP SYS PRES SEN P0452 0452 — — 2 × EC-479 EVAP SYS PRES SEN P0453 0453 — — 2 × EC-486 EVAP GROSS LEAK P0455 0455 — — 2 × EC-494 EVAP VERY SML LEAK P0456 0456 ×* 9 × 2 × EC-502 FUEL LEV SEN SLOSH P0460 0460 — — 2 × EC-512 FUEL LEVEL SENSOR P0461 0461 — — 2 × EC-514 FUEL LEVL SEN/CIRC P0462 0462 — — 2 × EC-516 FUEL LEVL SEN/CIRC P0463 0463 — — 2 × EC-516 VEH SPEED SEN/CIRC*5 P0500 0500 — — 2 × EC-518 ISC SYSTEM P0506 0506 — — 2 × EC-520 ISC SYSTEM P0507 0507 — — 2 × EC-522 PW ST P SEN/CIRC P0550 0550 — — 2 — EC-524 ECM BACK UP/CIRCUIT P0603 0603 — — 2 × EC-529 ECM P0605 0605 — — 1 or 2 × or — EC-533 SENSOR POWER/CIRC P0643 0643 — — 1 × EC-536 2*6 × AT-107 PNP SW/CIRC P0705 0705 — — 1*7 × AT-455 2*6 × AT-113 2*7 × AT-461 ATF TEMP SEN/CIRC P0710 0710 — — P0711 0711 — — 2 × AT-466 P0717 0717 — — 2 × AT-471 VEH SPD SEN/CIR AT* * P0720 0720 — — 2 × AT-119 VHCL SPEED SEN·AT*7 P0722 0722 — — 1 × AT-475 ENGINE SPEED SIG*6 P0725 0725 — — 2 × AT-124 2*6 × AT-128 A/T 1ST GR FNCTN P0731 0731 — — 1*7 × AT-481 2*6 × AT-133 7 1* × AT-484 2*6 × AT-138 1*7 × AT-490 2*6 × AT-143 1*7 × AT-496 FLUID TEMP SEN*7 TURBINE SENSOR* 7 5 6 A/T 2ND GR FNCTN A/T 3RD GR FNCTN A/T 4TH GR FNCTN P0732 P0733 P0734 0732 0733 0734 — — — — — — A/T 5TH GR FNCTN*7 P0735 0735 — — 1 × AT-501 TCC SOLENOID/CIRC*6 P0740 0740 — — 2 A/T TCC S/V FNCTN Revision: July 2006 P0744 0744 — EC-53 — × AT-150 6 2* × AT-155 1*7 × AT-507 2006 Quest C D E F G H I J K L M ON BOARD DIAGNOSTIC (OBD) SYSTEM Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST*2 L/PRESS SOL/CIRC*6 P0745 SRT code Test value/ Test limit (GST only) — — ECM*3 0745 PC SOL A(L/PRESS)*7 SFT SOL A/CIRC*6 P0750 0750 — SFT SOL B/CIRC*6 SHIFT SOL 0755 — MIL lighting up Reference page 2 × AT-163 1 × AT-510 1 × AT-169 1 × AT-515 1 × AT-174 1 × AT-520 — SHIFT SOL A*7 P0755 Trip — B*7 SHIFT SOL C*7 P0760 0760 — — 1 × AT-525 SFT SOL C STUCK ON*7 P0762 0762 — — 1 × AT-530 SHIFT SOL D*7 P0765 0765 — — 1 × AT-535 SHIFT SOL E*7 P0770 0770 — — 1 × AT-540 PC SOL B(SFT/PRS)*7 P0775 0775 — — 1 × AT-545 SHIFT*7 P0780 0780 — — 1 × AT-550 PC SOL C(TCC&SFT)*7 P0795 0795 — — 1 × AT-554 PC SOL C STC ON*7 P0797 0797 — — 1 × AT-559 P0850 0850 — — 2 × EC-542 P0882 0882 — — 1 × AT-568 CLOSED LOOP-B1 P1148 1148 — — 1 × EC-551 CLOSED LOOP-B2 P1168 1168 — — 1 × EC-551 TCS C/U FUNCTN P1211 1211 — — 2 — EC-552 P-N POS SW/CIRCUIT TCM POWER INPT SIG* 7 TCS/CIRC P1212 1212 — — 2 — EC-553 ENG OVER TEMP P1217 1217 — — 1 × EC-554 CTP LEARNING P1225 1225 — — 2 — EC-566 CTP LEARNING P1226 1226 — — 2 — EC-568 EGR SYSTEM P1402 1402 × × 2 × EC-570 ASCD SW P1564 1564 — — 1 — EC-577 ASCD BRAKE SW P1572 1572 — — 1 — EC-585 ASCD VHL SPD SEN P1574 1574 — — 1 — EC-593 NATS MALFUNCTION P1610 P1615 1610 - 1615 — — 2 — BL-210 TP SEN CIRC A/T*6 P1705 1705 — — 1 × AT-179 O/R CLTCH SOL/CIRC*6 P1760 1760 — — 2 × AT-181 VIAS S/V CIRC P1800 1800 — — 2 — EC-595 BRAKE SW/CIRCUIT P1805 1805 — — 2 — EC-600 ETC MOT PWR P2100 2100 — — 1 × EC-605 ETC FUNCTION/CIRC P2101 2101 — — 1 × EC-611 ETC MOT PWR P2103 2103 — — 1 × EC-605 ETC MOT P2118 2118 — — 1 × EC-618 ETC ACTR P2119 2119 — — 1 × EC-623 APP SEN 1/CIRC P2122 2122 — — 1 × EC-625 APP SEN 1/CIRC P2123 2123 — — 1 × EC-625 Revision: July 2006 EC-54 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM Items (CONSULT-II screen terms) DTC*1 CONSULT-II GST*2 SRT code Test value/ Test limit (GST only) Trip MIL lighting up Reference page A EC ECM*3 APP SEN 2/CIRC P2127 2127 — — 1 × EC-632 APP SEN 2/CIRC P2128 2128 — — 1 × EC-632 TP SENSOR P2135 2135 — — 1 × EC-640 APP SENSOR P2138 2138 — — 1 × EC-648 A/F SENSOR1 (B1) P2A00 2A00 — × 2 × EC-656 A/F SENSOR1 (B2) P2A03 2A03 — × 2 × EC-656 *1: 1st trip DTC No. is the same as DTC No. *2: This number is prescribed by SAE J2012. *3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN. *4: The troubleshooting for this DTC needs CONSULT-II. *5: When the fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates. *6: 4-speed A/T models *7: 5-speed A/T models *8: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-60, "How to Display SRT Status" . *9: SRT code will not be set if the self-diagnostic result is NG. DTC AND 1ST TRIP DTC D E F G The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip DTC will not be displayed. If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the 2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words, the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consecutive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the 1st trip, the DTC and 1st trip DTC are stored in the ECM memory. Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . For malfunctions in which 1st trip DTCs are displayed, refer to EC-51, "EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS" . These items are required by legal regulations to continuously monitor the system/ component. In addition, the items monitored non-continuously are also displayed on CONSULT-II. 1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the vehicle from being tested, for example during Inspection/Maintenance (I/M) tests. When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame data as specified in Work Flow procedure Step 2, refer to EC-89, "WORK FLOW" . Then perform DTC Confirmation Procedure or Overall Function Check to try to duplicate the malfunction. If the malfunction is duplicated, the item requires repair. How to Read DTC and 1st Trip DTC DTC and 1st trip DTC can be read by the following methods. With CONSULT-II With GST CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P1148, P0850, etc. These DTCs are prescribed by SAE J2012. (CONSULT-II also displays the malfunctioning component or system.) No Tools The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC. Example: 0340, 1148, 0850, etc. These DTCs are controlled by NISSAN. ● 1st trip DTC No. is the same as DTC No. ● Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indicate whether the malfunction is still occurring or has occurred in the past and has returned to norRevision: July 2006 C EC-55 2006 Quest H I J K L M ON BOARD DIAGNOSTIC (OBD) SYSTEM mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if available) is recommended. A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunction is displayed in “SELF-DIAGNOSTIC RESULTS” mode of CONSULT-II. Time data indicates how many times the vehicle was driven after the last detection of a DTC. If the DTC is being detected currently, the time data will be [0]. If a 1st trip DTC is stored in the ECM, the time data will be [1t]. PBIB0911E FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, absolute throttle position, base fuel schedule and intake air temperature at the moment a malfunction is detected. Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data. The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For details, see EC-125, "Freeze Frame Data and 1st Trip Freeze Frame Data" . Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the following priorities to update the data. Priority 1 Items Freeze frame data 2 3 Misfire — DTC: P0300 - P0306 Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175 Except the above items (Includes A/T related items) 1st trip freeze frame data For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different malfunction is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the ECM memory. Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM memory is erased. Procedures for clearing the ECM memory are described in EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . SYSTEM READINESS TEST (SRT) CODE System Readiness Test (SRT) code is specified in Service $01 of SAE J1979. As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and components. Completion must be verified in order for the emissions inspection to proceed. If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use the information in this Service Manual to set the SRT to “CMPLT”. Revision: July 2006 EC-56 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains A “CMPLT” until the self-diagnosis memory is erased. Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's normal driving pattern; the SRT will indicate “INCMP” for these items. EC NOTE: The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM memory power supply is interrupted for several hours. If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con- C tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the vehicle is returned to the customer untested. D NOTE: If MIL is ON during the state emissions inspection, the vehicle is also returned to the customer untested even though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and DTC (No DTCs) before the inspection. E SRT Item The table below shows required self-diagnostic items to set the SRT to “CMPLT”. SRT item (CONSULT-II indication) CATALYST EVAP SYSTEM HO2S EGR SYSTEM Performance Priority*1 Required self-diagnostic items to set the SRT to “CMPLT” Corresponding DTC No. 3 Three way catalyst function P0420, P0430 3 EVAP control system purge flow monitoring P0441 2 EVAP control system P0442 3 EVAP control system P0456 3 A/F sensor 1 P0133, P0153 Heated oxygen sensor 2 P0137, P0157 Heated oxygen sensor 2 P0138, P0158 Heated oxygen sensor 2 P0139, P0159 3 EGR function P0400 1 EGR function P1402 *1: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for models with CONSULT-II. F G H I J K L M Revision: July 2006 EC-57 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM SRT Set Timing SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and is shown in the table below. Example Self-diagnosis result All OK Case 1 Case 2 NG exists Case 3 Ignition cycle ← ON → OFF ← ON → Diagnosis ← ON → P0400 OK (1) — (1) OK (2) — (2) P0402 OK (1) — (1) — (1) OK (2) P1402 OK (1) OK (2) — (2) — (2) SRT of EGR “CMPLT” “CMPLT” “CMPLT” “CMPLT” P0400 OK (1) — (1) — (1) — (1) P0402 — (0) — (0) OK (1) — (1) OFF OFF ← ON → P1402 OK (1) OK (2) — (2) — (2) SRT of EGR “INCMP” “INCMP” “CMPLT” “CMPLT” P0400 OK OK — — P0402 — — — — P1402 NG — NG NG (Consecutive NG) (1st trip) DTC 1st trip DTC — 1st trip DTC DTC (= MIL “ON”) SRT of EGR “INCMP” “INCMP” “INCMP” “CMPLT” OK: Self-diagnosis is carried out and the result is OK. NG: Self-diagnosis is carried out and the result is NG. —: Self-diagnosis is not carried out. When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will indicate “CMPLT”. → Case 1 above When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate “CMPLT” at the time the respective self-diagnoses have at least one OK result. → Case 2 above If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indicate “CMPLT”. → Case 3 above The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state emissions inspection, it is unnecessary for each self-diagnosis to be executed twice (Case 3) for the following reasons: ● The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result. ● The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results. ● When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diagnosis memory must be erased from ECM after repair. ● If the 1st trip DTC is erased, all the SRT will indicate “INCMP”. NOTE: SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out prior to the state emission inspection even though the SRT indicates “CMPLT”. Revision: July 2006 EC-58 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM SRT Service Procedure If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review the flowchart diagnostic sequence on the next page. A EC C D E F G H I J K L M PBIB2320E *1 EC-55, "How to Read DTC and 1st Trip DTC" Revision: July 2006 *2 EC-60, "How to Display SRT Status" EC-59 *3 EC-60, "How to Set SRT Code" 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM How to Display SRT Status WITH CONSULT-II Selecting “SRT STATUS” in “DTC CONFIRMATION” mode with CONSULT-II. For items whose SRT codes are set, a “CMPLT” is displayed on the CONSULT-II screen; for items whose SRT codes are not set, “INCMP” is displayed. A sample of CONSULT-II display for SRT code is shown in the figure. “INCMP” means the self-diagnosis is incomplete and SRT is not set. “CMPLT” means the self-diagnosis is complete and SRT is set. NOTE: Though displayed on the CONSULT-II screen, “HO2S HTR” is not SRT item. WITH GST Selecting “Service $01” with GST (Generic Scan Tool) NO TOOLS A SRT code itself can be displayed while only SRT status can be. 1. Turn ignition switch ON and wait 20 seconds. 2. SRT status is indicated as shown below. – When all SRT codes are set, MIL lights up continuously. – When any SRT codes are not set, MIL will flash periodically for 10 seconds. SEF713Y PBIB2317E How to Set SRT Code To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each diagnosis may require a long period of actual driving under various conditions. WITH CONSULT-II Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table on EC-57, "SRT Item" . WITHOUT CONSULT-II The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The driving pattern should be performed one or more times to set all SRT codes. Revision: July 2006 EC-60 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM Driving Pattern A EC C D E F G H I J K L M PBIB3070E Revision: July 2006 EC-61 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving habits, etc. Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the shortest. Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within zone A. *: Normal conditions refer to the following: ● Sea level ● Flat road ● Ambient air temperature: 20 - 30°C (68 - 86°F) ● Diagnosis is performed as quickly as possible under normal conditions. Under different conditions [For example: ambient air temperature other than 20 - 30°C (68 - 86°F)], diagnosis may also be performed. Pattern 1: ● The engine is started at the engine coolant temperature of −10 to 35°C (14 to 95°F) (where the voltage between the ECM terminal 73 and ground is 3.0 - 4.3V). ● The engine must be operated at idle speed until the engine coolant temperature is greater than 70°C (158°F) (where the voltage between the ECM terminal 73 and ground is lower than 1.4V). ● The engine is started at the fuel tank temperature of warmer than 0°C (32°F) (where the voltage between the ECM terminal 107 and ground is less than 4.1V). Pattern 2: ● When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted. In this case, the time required for diagnosis may be extended. Pattern 3: ● The driving pattern outlined in *2 must be repeated at least 3 times. Pattern 4: ● Tests are performed after the engine has been operated for at least 17 minutes. ● The accelerator pedal must be held very steady during steady-state driving. ● If the accelerator pedal is moved, the test must be conducted all over again. *1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again. *2: Operate the vehicle in the following driving pattern. 1. Decelerate vehicle to 0 km/h (0 MPH) and let engine idle. 2. Repeat driving pattern shown at right at least 10 times. – During acceleration, hold the accelerator pedal as steady as possible. *3: Checking the vehicle speed with GST is advised. ● SEF414S Suggested Transmission Gear Position Set the shift lever in the D position with the overdrive switch turned ON. TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II) The following is the information specified in Service $06 of SAE J1979. The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the maximum or minimum value and is compared with the test value being monitored. These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be displayed on the GST screen. Revision: July 2006 EC-62 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM Test value (GST display) SRT item Self-diagnostic test item Test limit Unit 01H Max. 1/128 02H 81H Min. 1 P0430 03H 02H Max. 1/128 P0430 04H 82H Min. 1 EVAP control system (Small leak) P0442 05H 03H Max. 1/128 mm2 EVAP control system purge flow monitoring P0441 06H 83H Min. 20 mV EVAP control system (Very small leak) P0456 07H 03H Max. 1/128 mm2 P0131 41H 8EH Min. 5 mV P0132 42H 0EH Max. 5 mV P2A00 43H 0EH Max. 0.002 P2A00 44H 8EH Min. 0.002 P0133 45H 8EH Min. 0.004 P0130 46H 0EH Max. 5 mV P0130 47H 8EH Min. 5 mV P0133 48H 8EH Min. 0.004 P0151 4CH 8FH Min. 5 mV P0152 4DH 0FH Max. 5 mV P2A03 4EH 0FH Max. 0.002 P2A03 4FH 8FH Min. 0.002 P0153 50H 8FH Min. 0.004 P0150 51H 0FH Max. 5 mV P0150 52H 8FH Min. 5 mV P0153 53H 8FH Min. 0.004 P0139 19H 86H Min. 10mV/500 ms P0137 1AH 86H Min. 10 mV P0138 1BH 06H Max. 10 mV P0138 1CH 06H Max. 10 mV P0159 21H 87H Min. 10mV/500 ms P0157 22H 87H Min. 10 mV P0158 23H 07H Max. 10 mV Three way catalyst function (Bank 1) CATALYST Three way catalyst function (Bank 2) EVAP SYSTEM A/F sensor 1 (Bank 1) HO2S A/F sensor 1 (Bank 2) Heated oxygen sensor 2 (Bank 1) Heated oxygen sensor 2 (Bank 2) A/F sensor 1 heater (Bank 1) A/F sensor 1 heater (Bank 2) HO2S HTR Heated oxygen sensor 2 heater (Bank 1) Heated oxygen sensor 2 heater (Bank 2) Revision: July 2006 DTC TID CID P0420 01H P0420 P0158 24H 07H Max. 10 mV P0032 57H 10H Max. 5 mV P0031 58H 90H Min. 5 mV P0052 59H 11H Max. 5 mV P0051 5AH 91H Min. 5 mV P0038 2DH 0AH Max. 20 mV P0037 2EH 8AH Min. 20 mV P0058 2FH 0BH Max. 20 mV P0057 30H 8BH Min. 20 mV EC-63 2006 Quest A EC C D E F G H I J K L M ON BOARD DIAGNOSTIC (OBD) SYSTEM SRT item EGR SYSTEM Self-diagnostic test item EGR function DTC Test value (GST display) Test limit Unit 8CH Min. 1°C 32H 8CH Min. 1°C P0400 33H 8CH Min. 1°C P0400 34H 8CH Min. 1°C P1402 35H 0CH Max. 1°C TID CID P0400 31H P0400 HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION How to Erase DTC With CONSULT-II The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELFDIAG RESULTS” mode with CONSULT-II. If DTCs are displayed for both ECM and TCM (Transmission control module), they need to be erased individually from the ECM and TCM (Transmission control module). NOTE: If the DTC is not for AT related items (see EC-8, "INDEX FOR DTC" ), skip steps 2 through 4. 1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again. 2. Turn CONSULT-II ON and touch “AT” (4-speed A/T models) or “TRANSMISSIION” (5-speed A/T models). 3. Touch “SELF-DIAG RESULTS”. 4. Touch “ERASE”. [The DTC in the TCM (Transmission control module) will be erased.] Then touch “BACK” twice. 5. Touch “ENGINE”. 6. Touch “SELF-DIAG RESULTS”. Revision: July 2006 EC-64 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM 7. Touch “ERASE”. (The DTC in the ECM will be erased.) A EC C D E F G H I J SCIA5576E With GST The emission related diagnostic information in the ECM can be erased by selecting “Service $04” with GST. NOTE: If the DTC is not for AT related items (see EC-8, "INDEX FOR DTC" ), skip step 2. 1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again. 2. Perform AT-45, "HOW TO ERASE DTC (WITH GST)" or AT-407, "How to erase DTC (with GST)" . (The DTC in the TCM will be erased.) 3. Select “Service $04” with GST (Generic Scan Tool). No Tools NOTE: If the DTC is not for AT related items (see EC-8, "INDEX FOR DTC" ), skip step 2. 1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again. 2. Perform AT-45, "HOW TO ERASE DTC (NO TOOLS)" or AT-407, "How to erase DTC (no tools)" . (The DTC in the TCM will be erased.) 3. Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. Refer to EC-67, "HOW TO SWITCH DIAGNOSTIC TEST MODE" . ● If the battery is disconnected, the emission-related diagnostic information will be lost within 24 hours. ● The following data are cleared when the ECM memory is erased. – Diagnostic trouble codes – 1st trip diagnostic trouble codes Revision: July 2006 EC-65 2006 Quest K L M ON BOARD DIAGNOSTIC (OBD) SYSTEM Freeze frame data – 1st trip freeze frame data – System readiness test (SRT) codes – Test values Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all of the data listed above, are cleared from the ECM memory during work procedures. – Malfunction Indicator Lamp (MIL) EBS00QVQ DESCRIPTION The MIL is located on the instrument panel. 1. The MIL will light up when the ignition switch is turned ON without the engine running. This is a bulb check. If the MIL does not light up, refer to DI-21, "WARNING LAMPS" , or see EC-726, "MIL AND DATA LINK CONNECTOR" . 2. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagnostic system has detected an engine system malfunction. SEF217U Revision: July 2006 EC-66 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM ON BOARD DIAGNOSTIC SYSTEM FUNCTION A The on board diagnostic system has the following three functions. Diagnostic Test Mode KEY and ENG. Status Function Explanation of Function Mode I Ignition switch in ON position BULB CHECK This function checks the MIL bulb for damage (blown, open circuit, etc.). If the MIL does not come on, check MIL circuit. EC C Engine stopped D Engine running Mode II Ignition switch in ON position MALFUNCTION WARNING This is a usual driving condition. When a malfunction is detected twice in two consecutive driving cycles (two trip detection logic), the MIL will light up to inform the driver that a malfunction has been detected. The following malfunctions will light up or blink the MIL in the 1st trip. SELF-DIAGNOSTIC RESULTS ● Misfire (Possible three way catalyst damage) ● One trip detection diagnoses E F G This function allows DTCs and 1st trip DTCs to be read. H Engine stopped I When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is malfunction on engine control system. Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means of operating fail-safe function. The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands the driver to repair the malfunction. Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut MIL Flashing Without DTC When any SRT codes are not set, MIL may flash without DTC. For the details, refer to EC-60, "How to Display SRT Status" . HOW TO SWITCH DIAGNOSTIC TEST MODE NOTE: ● It is better to count the time accurately with a clock. ● It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction. ● Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF. How to Set Diagnostic Test Mode II (Self-diagnostic Results) 1. 2. a. b. 3. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds. Repeat the following procedure quickly five times within 5 seconds. Fully depress the accelerator pedal. Fully release the accelerator pedal. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts blinking. Revision: July 2006 EC-67 2006 Quest J K L M ON BOARD DIAGNOSTIC (OBD) SYSTEM 4. NOTE: Do not release the accelerator pedal for 10 seconds if MIL may start blinking on the halfway of this 10 seconds. This blinking is displaying SRT status and is continued for another 10 seconds. For the details, refer to EC-60, "How to Display SRT Status" . Fully release the accelerator pedal. NOTE: Wait until the same DTC (or 1st trip DTC) appears to confirm all DTCs certainly. ECM has entered to Diagnostic Test Mode II (Self-diagnostic results). PBIB0092E How to Erase Diagnostic Test Mode II (Self-diagnostic Results) 1. 2. 3. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to EC-67, "How to Set Diagnostic Test Mode II (Self-diagnostic Results)" . Fully depress the accelerator pedal and keep it for more than 10 seconds. The emission-related diagnostic information has been erased from the backup memory in the ECM. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed. DIAGNOSTIC TEST MODE I — BULB CHECK In this mode, the MIL on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to DI21, "WARNING LAMPS" or see EC-726, "MIL AND DATA LINK CONNECTOR" . DIAGNOSTIC TEST MODE I — MALFUNCTION WARNING MIL Condition ON When the malfunction is detected. OFF No malfunction. These DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS) Revision: July 2006 EC-68 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM DIAGNOSTIC TEST MODE II — SELF-DIAGNOSTIC RESULTS A In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MIL as shown below. The DTC and 1st trip DTC are displayed at the same time. If the MIL does not illuminate in diagnostic test mode I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MIL illuminates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are EC displayed, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These unidentified codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for how to read a code. C D E F G H I J K L PBIB3005E A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated by the number of ten flashes. The “A” is indicated by the number of eleven flash. The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds consisting of an ON (0.6-second) - OFF (0.6-second) cycle. The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle. A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later numeral appears on the display 1.3 seconds after the former numeral has disappeared. A change from one trouble code to another occurs at an interval of 1.8-second OFF. In this way, all the detected malfunctions are classified by their DTC numbers. The DTC 0000 refers to no malfunction. (See EC-8, "INDEX FOR DTC" ) How to Erase Diagnostic Test Mode II (Self-diagnostic Results) The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to EC68, "How to Erase Diagnostic Test Mode II (Self-diagnostic Results)" . ● If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours. ● Be careful not to erase the stored memory before starting trouble diagnoses. Revision: July 2006 EC-69 2006 Quest M ON BOARD DIAGNOSTIC (OBD) SYSTEM OBD System Operation Chart EBS00QVR RELATIONSHIP BETWEEN MIL, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS ● ● ● ● ● When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are stored in the ECM memory. When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are stored in the ECM memory, and the MIL will come on. For details, refer to EC-50, "Two Trip Detection Logic" . The MIL will go off after the vehicle is driven 3 times (driving pattern B) with no malfunction. The drive is counted only when the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting, the counter will reset. The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A) without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times (driving pattern C) without the same malfunction recurring. The “TIME” in “SELF-DIAGNOSTIC RESULTS” mode of CONSULT-II will count the number of times the vehicle is driven. The 1st trip DTC is not displayed when the self-diagnosis results in OK for the 2nd trip. SUMMARY CHART Items MIL (goes off) DTC, Freeze Frame Data (no display) 1st Trip DTC (clear) 1st Trip Freeze Frame Data (clear) Fuel Injection System Misfire Other 3 (pattern B) 3 (pattern B) 3 (pattern B) 80 (pattern C) 80 (pattern C) 40 (pattern A) 1 (pattern C), *1 1 (pattern C), *1 1 (pattern B) *1, *2 *1, *2 1 (pattern B) For details about patterns B and C under “Fuel Injection System” and “Misfire”, see EC-72 . For details about patterns A and B under “Other”, see EC-74 . *1: Clear timing is at the moment OK is detected. *2: Clear timing is when the same malfunction is detected in the 2nd trip. Revision: July 2006 EC-70 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS FOR “MISFIRE ” , “FUEL INJECTION SYSTEM” A EC C D E F G H I J K L M SEF392S *1: When the same malfunction is detected in two consecutive trips, MIL will light up. *2: MIL will go off after vehicle is driven 3 times (pattern B) without any malfunctions. *3: When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data will be stored in ECM. *4: The DTC and the freeze frame data will not be displayed any longer after vehicle is driven 80 times (pattern C) without the same malfunction. (The DTC and the freeze frame data still remain in ECM.) *5: When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data will be stored in ECM. *6: The 1st trip DTC and the 1st trip freeze frame data will be cleared at the moment OK is detected. *7: When the same malfunction is detected in the 2nd trip, the 1st trip freeze frame data will be cleared. *8: 1st trip DTC will be cleared when vehicle is driven once (pattern C) without the same malfunction after DTC is stored in ECM. Revision: July 2006 EC-71 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM EXPLANATION FOR DRIVING PATTERNS FOR “MISFIRE ”, “FUEL INJECTION SYSTEM” Driving pattern B means the vehicle operation as follows: All components and systems should be monitored at least once by the OBD system. ● The B counter will be cleared when the malfunction is detected once regardless of the driving pattern. ● The B counter will be counted up when driving pattern B is satisfied without any malfunction. ● The MIL will go off when the B counter reaches 3. (*2 in OBD SYSTEM OPERATION CHART) Driving pattern C means the vehicle operation as follows: The following conditions should be satisfied at the same time: Engine speed: (Engine speed in the freeze frame data) ±375 rpm Calculated load value: (Calculated load value in the freeze frame data) x (1±0.1) [%] Engine coolant temperature (T) condition: ● When the freeze frame data shows lower than 70°C (158°F), T should be lower than 70°C (158°F). ● When the freeze frame data shows higher than or equal to 70°C (158°F), T should be higher than or equal to 70°C (158°F). Example: If the stored freeze frame data is as follows: Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperature: 80°C (176°F) To be satisfied with driving pattern C, the vehicle should run under the following conditions: Engine speed: 475 - 1,225 rpm, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70°C (158°F) ● The C counter will be cleared when the malfunction is detected regardless of vehicle conditions above. ● The C counter will be counted up when vehicle conditions above is satisfied without the same malfunction. ● The DTC will not be displayed after C counter reaches 80. ● The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC is stored in ECM. Revision: July 2006 EC-72 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPT FOR “MISFIRE ”, “FUEL INJECTION SYSTEM” A EC C D E F G H I J K L M SEF393SD *1: When the same malfunction is detected in two consecutive trips, MIL will light up. *2: MIL will go off after vehicle is driven 3 times (pattern B) without any malfunctions. *3: When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data will be stored in ECM. *4: The DTC and the freeze frame data will not be displayed any longer after vehicle is driven 40 times (pattern A) without the same malfunction. (The DTC and the freeze frame data still remain in ECM.) *5: When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data will be stored in ECM. *6: 1st trip DTC will be cleared after vehicle is driven once (pattern B) without the same malfunction. When the same malfunction is *7: detected in the 2nd trip, the 1st trip freeze frame data will be cleared. Revision: July 2006 EC-73 2006 Quest ON BOARD DIAGNOSTIC (OBD) SYSTEM EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE ”, “FUEL INJECTION SYSTEM” AEC574 ● ● ● The A counter will be cleared when the malfunction is detected regardless of (1) - (4). The A counter will be counted up when (1) - (4) are satisfied without the same malfunction. The DTC will not be displayed after the A counter reaches 40. Driving pattern B means the vehicle operation as follows: All components and systems should be monitored at least once by the OBD system. ● The B counter will be cleared when the malfunction is detected once regardless of the driving pattern. ● The B counter will be counted up when driving pattern B is satisfied without any malfunctions. ● The MIL will go off when the B counter reaches 3 (*2 in OBD SYSTEM OPERATION CHART). Revision: July 2006 EC-74 2006 Quest BASIC SERVICE PROCEDURE BASIC SERVICE PROCEDURE Basic Inspection PFP:00018 A EBS00QVS 1. INSPECTION START 1. 2. – – – – – – 3. – – – – 4. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance. Open engine hood and check the following: Harness connectors for improper connections Wiring harness for improper connections, pinches and cut Vacuum hoses for splits, kinks and improper connections Hoses and ducts for leaks Air cleaner clogging Gasket Confirm that electrical or mechanical loads are not applied. Headlamp switch is OFF. SEF983U Air conditioner switch is OFF. Rear window defogger switch is OFF. Steering wheel is in the straight-ahead position, etc. Start engine and warm it up until engine coolant temperature indicator points the middle of gauge. Ensure engine stays below 1,000 rpm. EC C D E F G H I J SEF976U 5. Run engine at about 2,000 rpm for about 2 minutes under no load. 6. Make sure that no DTC is displayed with CONSULT-II or GST. OK or NG OK >> GO TO 3. NG >> GO TO 2. K L M SEF977U 2. REPAIR OR REPLACE Repair or replace components as necessary according to corresponding Diagnostic Procedure. >> GO TO 3. Revision: July 2006 EC-75 2006 Quest BASIC SERVICE PROCEDURE 3. CHECK TARGET IDLE SPEED 1. 2. With CONSULT-II Run engine at about 2,000 rpm for about 2 minutes under no load. Rev engine (2,000 to 3,000 rpm) two or three times under no load, then run engine at idle speed for about 1 minute. PBIA8513J 3. Read idle speed in “DATA MONITOR” mode with CONSULT-II. Refer to EC-80, "IDLE SPEED" . 4-speed A/T: 5-speed A/T: 700 ± 50 rpm (in P or N position) 675 ± 50 rpm (in P or N position) SEF058Y Without CONSULT-II Run engine at about 2,000 rpm for about 2 minutes under no load. Rev engine (2,000 to 3,000 rpm) two or three times under no load, then run engine at idle speed for about 1 minute. 3. Check idle speed. Refer to EC-80, "IDLE SPEED" . 1. 2. 4-speed A/T: 5-speed A/T: 700 ± 50 rpm (in P or N position) 675 ± 50 rpm (in P or N position) OK or NG OK >> GO TO 10. NG >> GO TO 4. 4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING 1. 2. Stop engine. Perform EC-82, "Accelerator Pedal Released Position Learning" . >> GO TO 5. 5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING Perform EC-82, "Throttle Valve Closed Position Learning" . >> GO TO 6. Revision: July 2006 EC-76 2006 Quest BASIC SERVICE PROCEDURE 6. PERFORM IDLE AIR VOLUME LEARNING A Refer to EC-82, "Idle Air Volume Learning" . Is Idle Air Volume Learning carried out successfully? Yes or No Yes >> GO TO 7. No >> 1. Follow the instruction of Idle Air Volume Learning. 2. GO TO 4. EC C 7. CHECK TARGET IDLE SPEED AGAIN D With CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Read idle speed in “DATA MONITOR” mode with CONSULT-II. Refer to EC-80, "IDLE SPEED" . 4-speed A/T: 5-speed A/T: 1. 2. E 700 ± 50 rpm (in P or N position) 675 ± 50 rpm (in P or N position) F Without CONSULT-II Start engine and warm it up to normal operating temperature. Check idle speed. Refer to EC-80, "IDLE SPEED" . 4-speed A/T: 5-speed A/T: 700 ± 50 rpm (in P or N position) 675 ± 50 rpm (in P or N position) G SEF174Y OK or NG OK >> GO TO 10. NG >> GO TO 8. I 8. DETECT MALFUNCTIONING PART J Check the following. ● Check camshaft position sensor (PHASE) and circuit. Refer to EC-396 . ● Check crankshaft position sensor (POS) and circuit. Refer to EC-388 . OK or NG OK >> GO TO 9. NG >> 1. Repair or replace. 2. GO TO 4. K L 9. CHECK ECM FUNCTION 1. 2. M Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.) Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . >> GO TO 4. Revision: July 2006 H EC-77 2006 Quest BASIC SERVICE PROCEDURE 10. CHECK IGNITION TIMING 1. 2. Run engine at idle. Check ignition timing with a timing light. Refer to EC-80, "IGNITION TIMING" . 15 ± 5° BTDC (in P or N position) OK or NG OK >> GO TO 19. NG >> GO TO 11. BBIA0032E 11. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING 1. 2. Stop engine. Perform EC-82, "Accelerator Pedal Released Position Learning" . >> GO TO 12. 12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING Perform EC-82, "Throttle Valve Closed Position Learning" . >> GO TO 13. 13. PERFORM IDLE AIR VOLUME LEARNING Refer to EC-82, "Idle Air Volume Learning" . Is Idle Air Volume Learning carried out successfully? Yes or No Yes >> GO TO 14. No >> 1. Follow the instruction of Idle Air Volume Learning. 2. GO TO 4. 14. CHECK TARGET IDLE SPEED AGAIN 1. 2. With CONSULT-II Start engine and warm it up to normal operating temperature. Read idle speed in “DATA MONITOR” mode with CONSULT-II. Refer to EC-80, "IDLE SPEED" . 4-speed A/T: 5-speed A/T: 700 ± 50 rpm (in P or N position) 675 ± 50 rpm (in P or N position) Without CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Check idle speed. Refer to EC-80, "IDLE SPEED" . 4-speed A/T: 5-speed A/T: 700 ± 50 rpm (in P or N position) 675 ± 50 rpm (in P or N position) SEF174Y OK or NG OK >> GO TO 15. NG >> GO TO 17. Revision: July 2006 EC-78 2006 Quest BASIC SERVICE PROCEDURE 15. CHECK IGNITION TIMING AGAIN 1. 2. A Run engine at idle. Check ignition timing with a timing light. Refer to EC-80, "IGNITION TIMING" . EC 15 ± 5° BTDC (in P or N position) OK or NG OK >> GO TO 19. NG >> GO TO 16. C D BBIA0032E 16. CHECK TIMING CHAIN INSTALLATION E Check timing chain installation. Refer to EM-56, "TIMING CHAIN" . OK or NG OK >> GO TO 17. NG >> 1. Repair the timing chain installation. 2. GO TO 4. F G 17. DETECT MALFUNCTIONING PART H Check the following. ● Check camshaft position sensor (PHASE) and circuit. Refer to EC-396 . ● Check crankshaft position sensor (POS) and circuit. Refer to EC-388 . OK or NG OK >> GO TO 18. NG >> 1. Repair or replace. 2. GO TO 4. I J 18. CHECK ECM FUNCTION 1. 2. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.) Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . >> GO TO 4. L M 19. INSPECTION END Did you replace the ECM, referring this Basic Inspection procedure? Yes or No Yes >> 1. Perform EC-81, "VIN Registration" . 2. INSPECTION END No >> INSPECTION END Revision: July 2006 K EC-79 2006 Quest BASIC SERVICE PROCEDURE Idle Speed and Ignition Timing Check EBS00QVT IDLE SPEED With CONSULT-II Check idle speed in “DATA MONITOR” mode with CONSULT-II. SEF058Y With GST Check idle speed with GST. IGNITION TIMING Any of following two methods may be used. Method A 1. 2. Slide the harness protector off ignition coil No.1 to clear the wires. Attach timing light to the ignition coil No.1 wires as shown in the figure. BBIA0196E 3. Check ignition timing. BBIA0032E Method B 1. Remove No.1 ignition coil. BBIA0196E Revision: July 2006 EC-80 2006 Quest BASIC SERVICE PROCEDURE 2. Connect No.1 ignition coil and spark plug with suitable high-tension wire as shown, and attach timing light clamp to this wire. A EC C BBIA0082E D E F G SEF166Y 3. Check ignition timing. H I J BBIA0032E VIN Registration K EBS00QVU DESCRIPTION L VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced. NOTE: Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M). M OPERATION PROCEDURE With CONSULT-II 1. 2. 3. 4. Check the VIN of the vehicle and note it. Refer to GI-45, "IDENTIFICATION INFORMATION" . Turn ignition switch ON and engine stopped. Select “VIN REGISTRATION” in “WORK SUPPORT” mode. Follow the instruction of CONSULT-II display. PBIB2242E Revision: July 2006 EC-81 2006 Quest BASIC SERVICE PROCEDURE Accelerator Pedal Released Position Learning EBS00QVV DESCRIPTION Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time harness connector of accelerator pedal position sensor or ECM is disconnected. OPERATION PROCEDURE 1. 2. 3. 4. 5. Make sure that accelerator pedal is fully released. Turn ignition switch ON and wait at least 2 seconds. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and wait at least 2 seconds. Turn ignition switch OFF and wait at least 10 seconds. Throttle Valve Closed Position Learning EBS00QVW DESCRIPTION Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by monitoring the throttle position sensor output signal. It must be performed each time harness connector of electric throttle control actuator or ECM is disconnected. OPERATION PROCEDURE 1. 2. 3. Make sure that accelerator pedal is fully released. Turn ignition switch ON. Turn ignition switch OFF and wait at least 10 seconds. Make sure that throttle valve moves during above 10 seconds by confirming the operating sound. Idle Air Volume Learning EBS00QVX DESCRIPTION Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific range. It must be performed under any of the following conditions: ● Each time electric throttle control actuator or ECM is replaced. ● Idle speed or ignition timing is out of specification. PREPARATION Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied. Learning will be cancelled if any of the following conditions are missed for even a moment. ● Battery voltage: More than 12.9V (At idle) ● Engine coolant temperature: 70 - 100°C (158 - 212°F) ● PNP switch: ON ● Electric load switch: OFF (Air conditioner, headlamp, rear window defogger) On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is start the headlamp will not be illuminated. ● Steering wheel: Neutral (Straight-ahead position) ● Vehicle speed: Stopped ● Transmission: Warmed-up – With CONSULT-II: Drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/T” system indicates less than 0.9V. – Without CONSULT-II: Drive vehicle for 10 minutes. OPERATION PROCEDURE With CONSULT-II 1. 2. 3. 4. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Start engine and warm it up to normal operating temperature. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order. Revision: July 2006 EC-82 2006 Quest BASIC SERVICE PROCEDURE 5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode. A EC C SEF217Z D 6. Touch “START” and wait 20 seconds. E F G SEF454Y 7. 8. H Make sure that “CMPLT” is displayed on CONSULT-II screen. If “CMPLT” is not displayed, Idle Air Volume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to the Diagnostic Procedure below. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications. I J ITEM SPECIFICATION Idle speed 4-speed A/T: 700 ± 50 rpm (in P or N position) 5-speed A/T: 675 ± 50 rpm (in P or N position) Ignition timing 15 ± 5° BTDC (in P or N position) K MBIB0238E Without CONSULT-II NOTE: ● It is better to count the time accurately with a clock. ● It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction. 1. Perform EC-82, "Accelerator Pedal Released Position Learning" . 2. Perform EC-82, "Throttle Valve Closed Position Learning" . 3. Start engine and warm it up to normal operating temperature. 4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order. 5. Turn ignition switch OFF and wait at least 10 seconds. 6. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds. 7. Repeat the following procedure quickly five times within 5 seconds. a. Fully depress the accelerator pedal. b. Fully release the accelerator pedal. 8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops blinking and turned ON. 9. Fully release the accelerator pedal within 3 seconds after the MIL turned ON. 10. Start engine and let it idle. Revision: July 2006 EC-83 2006 Quest L M BASIC SERVICE PROCEDURE 11. Wait 20 seconds. SEC897C 12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications. ITEM SPECIFICATION Idle speed 4-speed A/T: 700 ± 50 rpm (in P or N position) 5-speed A/T: 675 ± 50 rpm (in P or N position) Ignition timing 15 ± 5° BTDC (in P or N position) 13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCEDURE below. DIAGNOSTIC PROCEDURE If idle air volume learning cannot be performed successfully, proceed as follows: 1. Check that throttle valve is fully closed. 2. Check PCV valve operation. 3. Check that downstream of throttle valve is free from air leakage. 4. When the above three items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the cause of the incident. It is useful to perform EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . 5. If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform Idle Air Volume Learning all over again: ● Engine stalls. ● Erroneous idle. Fuel Pressure Check EBS00QVY FUEL PRESSURE RELEASE With CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-II. Start engine. After engine stalls, crank it two or three times to release all fuel pressure. Turn ignition switch OFF. SEF214Y Revision: July 2006 EC-84 2006 Quest BASIC SERVICE PROCEDURE Without CONSULT-II 1. 2. 3. 4. 5. A Remove fuel pump fuse located in IPDM E/R. Start engine. After engine stalls, crank it two or three times to release all fuel pressure. Turn ignition switch OFF. Reinstall fuel pump fuse after servicing fuel system. EC C BBIA0229E D FUEL PRESSURE CHECK CAUTION: Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger. NOTE: Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pressure cannot be completely released because V42 models do not have fuel return system. E F Method A CAUTION: ● The fuel hose connection method used when taking fuel pressure check must not be used for other purposes. ● Be careful not to scratch or put debris around connection area when servicing, so that the quick connector maintains sealability with O-rings inside. 1. Release fuel pressure to zero. Refer to EC-84, "FUEL PRESSURE RELEASE" . 2. Prepare fuel hose for fuel pressure check, and connect fuel pressure gauge. ● Use suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose without quick connector). ● To avoid unnecessary force or tension to hose, use moderately long fuel hose for fuel pressure check. ● Do not use the fuel hose for checking fuel pressure with damage or cracks on it. ● Use Pressure Gauge to check fuel pressure. 3. Remove fuel hose. Refer to EM-23, "INTAKE MANIFOLD" . ● Do not twist or kink fuel hose because it is plastic hose. ● Do not remove fuel hose from quick connector. ● Keep the original fuel hose to be free from intrusion of dust or foreign substances with a suitable cover. 4. Install the fuel pressure gauge as shown in the figure. ● Wipe off oil or dirt from hose insertion part using cloth moistened with gasoline. ● Apply proper amount of gasoline between top of the fuel tube and No.1 spool. ● Insert fuel hose for fuel pressure check until it touches the No.1 spool on fuel tube. ● Use NISSAN genuine hose clamp (part number: 16439 N4710 or 16439 40U00). ● When reconnecting fuel line, always use new clamps. PBIB0669E ● When reconnecting fuel hose, check the original fuel hose for damage and abnormality. ● Use a torque driver to tighten clamps. Revision: July 2006 EC-85 2006 Quest G H I J K L M BASIC SERVICE PROCEDURE ● Install hose clamp to the position within 1 - 2 mm (0.04 0.08in). Tightening torque: ● 1 - 1.5 Nm (0.1 - 0.15 kg-m, 9 - 13in-lb) Make sure that clamp screw does not contact adjacent parts. BBIA0230E 5. 6. 7. 8. After connecting fuel hose for fuel pressure check, pull the hose with a force of approximately 98 N (10 kg, 22lb) to confirm fuel tube does not come off. Turn ignition switch ON and check for fuel leakage. Start engine and check for fuel leakage. Read the indication of fuel pressure gauge. ● Do not perform fuel pressure check with system operating. Fuel pressure gauge may indicate false readings. ● During fuel pressure check, confirm for fuel leakage from fuel connection every 3 minutes. At idling: Approximately 350 kPa (3.57 kg/cm2 , 51 psi) 9. If result is unsatisfactory, go to next step. 10. Check the following. ● Fuel hoses and fuel tubes for clogging ● Fuel filter for clogging ● Fuel pump ● Fuel pressure regulator for clogging If OK, replace fuel pressure regulator. If NG, repair or replace. Method B CAUTION: ● Be careful not to scratch or get the fuel hose connection area dirty when servicing, so that the quick connector o-ring maintains sealability. ● Use Fuel Pressure Gauge Kit J-44321 and Fuel Pressure Adapter J-44321-6 to check fuel pressure. ● Do not perform fuel pressure check with electrical system operating (i.e. lights, rear defog, A/C, etc.). Fuel pressure gauge may indicate false readings due to varying engine loads and changes in manifold vacuum. 1. Release fuel pressure to zero. Refer to EC-84, "FUEL PRESSURE RELEASE" . 2. Remove fuel hose using Quick Connector Release J-45488. Refer to EM-39, "FUEL INJECTOR AND FUEL TUBE" . ● Do not twist or kink fuel hose because it is plastic hose. ● Do not remove fuel hose from quick connector. ● Keep fuel hose connections clean. 3. Install Fuel Pressure Adapter J-44321-6 and Fuel Pressure Gauge (from kit J-44321) as shown in figure. ● Do not distort or bend fuel rail tube when installing fuel pressure gauge adapter. ● When reconnecting fuel hose, check the original fuel hose for damage and abnormality. 4. 5. 6. Turn ignition switch ON (reactivate fuel pump), and check for fuel leakage. Start engine and check for fuel leakage. Read the indication of fuel pressure gauge. ● During fuel pressure check, check for fuel leakage from fuel connection every 3 minutes. Revision: July 2006 EC-86 2006 Quest BASIC SERVICE PROCEDURE At idling: 7. 8. 9. Approximately 350 kPa (3.57 kg/cm2 , 51 psi) A If result is unsatisfactory, go to next step. Check the following. EC ● Fuel hoses and fuel tubes for clogging ● Fuel filter for clogging ● Fuel pump C ● Fuel pressure regulator for clogging If OK, replace fuel pressure regulator. If NG, repair or replace. D Before disconnecting Fuel Pressure Gauge and Fuel Pressure Adapter J-44321-6, release fuel pressure to zero. Refer to EC-84, "FUEL PRESSURE RELEASE" E F G H I J K L M Revision: July 2006 EC-87 2006 Quest TROUBLE DIAGNOSIS TROUBLE DIAGNOSIS Trouble Diagnosis Introduction PFP:00004 EBS00QVZ INTRODUCTION The engine has an ECM to control major systems such as fuel control, ignition control, idle air control system, etc. The ECM accepts input signals from sensors and instantly drives actuators. It is essential that both input and output signals are proper and stable. At the same time, it is important that there are no malfunctions such as vacuum leaks, fouled spark plugs, or other malfunctions with the engine. MEF036D It is much more difficult to diagnose an incident that occurs intermittently rather than continuously. Most intermittent incidents are caused by poor electric connections or improper wiring. In this case, careful checking of suspected circuits may help prevent the replacement of good parts. SEF233G A visual check only may not find the cause of the incidents. A road test with CONSULT-II (or GST) or a circuit tester connected should be performed. Follow the Work Flow on EC-89 . Before undertaking actual checks, take a few minutes to talk with a customer who approaches with a driveability complaint. The customer can supply good information about such incidents, especially intermittent ones. Find out what symptoms are present and under what conditions they occur. A Diagnostic Worksheet like the example on EC-93 should be used. Start your diagnosis by looking for conventional malfunctions first. This will help troubleshoot driveability malfunctions on an electronically controlled engine vehicle. Revision: July 2006 EC-88 SEF234G 2006 Quest TROUBLE DIAGNOSIS WORK FLOW Overall Sequence A EC C D E F G H I J K L M PBIB2267E Revision: July 2006 EC-89 2006 Quest TROUBLE DIAGNOSIS Detailed Flow 1. GET INFORMATION FOR SYMPTOM Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the EC-92, "DIAGNOSTIC WORKSHEET" . >> GO TO 2. 2. CHECK DTC*1 1. Check DTC*1 . 2. Perform the following procedure if DTC*1 is displayed. – Record DTC*1 and freeze frame data*2 . (Print them out with CONSULT-II or GST.) – Erase DTC*1 . (Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .) Study the relationship between the cause detected by DTC*1 and the symptom described by the customer. (Symptom Matrix Chart is useful. Refer to EC-97, "Symptom Matrix Chart" .) 3. Check related service bulletins for information. Is any symptom described and any DTC detected? – Symptom is described, DTC*1 is displayed>>GO TO 3. Symptom is described, DTC*1 is not displayed>>GO TO 4. Symptom is not described, DTC*1 is displayed>>GO TO 5. 3. CONFIRM THE SYMPTOM Try to confirm the symptom described by the customer (except MIL ON). DIAGNOSIS WORK SHEET is useful to verify the incident. Connect CONSULT-II to the vehicle in DATA MONITOR (AUTO TRIG) mode and check real time diagnosis results. Verify relation between the symptom and the condition when the symptom is detected. >> GO TO 5. 4. CONFIRM THE SYMPTOM Try to confirm the symptom described by the customer. DIAGNOSIS WORK SHEET is useful to verify the incident. Connect CONSULT-II to the vehicle in DATA MONITOR (AUTO TRIG) mode and check real time diagnosis results. Verify relation between the symptom and the condition when the symptom is detected. >> GO TO 6. Revision: July 2006 EC-90 2006 Quest TROUBLE DIAGNOSIS 5. PERFORM DTC CONFIRMATION PROCEDURE A 1 1 Perform DTC Confirmation Procedure for the displayed DTC* , and then make sure that DTC* is detected again. At this time, always connect CONSULT-II to the vehicle, and check diagnostic results in real time on “DATA EC MONITOR (AUTO TRIG)”. If two or more DTCs*1 are detected, refer to EC-94, "DTC Inspection Priority Chart" and determine trouble diagnosis order. C NOTE: ● Freeze frame data*2 is useful if the DTC*1 is not detected. ● Perform Overall Function Check if DTC Confirmation Procedure is not included on Service Manual. This D simplified check procedure is an effective alternative though DTC*1 cannot be detected during this check. If the result of Overall Function Check is NG, it is the same as the detection of DTC*1 by DTC ConfirmaE tion Procedure. Is DTC*1 detected? Yes >> GO TO 10. No >> Check according to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . F 6. PERFORM BASIC INSPECTION G Perform EC-75, "Basic Inspection" . With CONSULT-II>>GO TO 7. Without CONSULT-II>>GO TO 9. H 7. PERFORM DATA MONITOR (SPEC) MODE I With CONSULT-II Make sure that “MAS A/F SE-B1”, “B/FUEL SCHDL”, and “A/F ALPHA-B1”, “A/F ALPHA-B2” are within the SP value using CONSULT-II “DATA MONITOR (SPEC)” mode. Refer to EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . Are they within the SP value? Yes >> GO TO 9. No >> GO TO 8. J K L SEF601Z M 8. DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE Detect malfunctioning part according to EC-143, "Diagnostic Procedure" . Is malfunctioning part detected? Yes >> GO TO 11. No >> GO TO 9. 9. DETECT MALFUNCTIONING SYSTEM BY SYMPTOM MATRIX CHART Detect malfunctioning system according to EC-97, "Symptom Matrix Chart" based on the confirmed symptom in step 4, and determine the trouble diagnosis order based on possible causes and symptom. >> GO TO 10. Revision: July 2006 EC-91 2006 Quest TROUBLE DIAGNOSIS 10. DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE Inspect according to Diagnostic Procedure of the system. NOTE: The Diagnostic Procedure in EC section described based on open circuit inspection. A short circuit inspection is also required for the circuit check in the Diagnostic Procedure. For details, refer to Circuit Inspection in GI26, "How to Perform Efficient Diagnosis for an Electrical Incident" . Is malfunctioning part detected? Yes >> GO TO 11. No >> Monitor input data from related sensors or check voltage of related ECM terminals using CONSULT-II. Refer to EC-137, "CONSULT-II Reference Value in Data Monitor" , EC-112, "ECM Terminals and Reference Value" . 11. REPAIR OR REPLACE THE MALFUNCTIONING PART 1. 2. 3. Repair or replace the malfunctioning part. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replacement. Check DTC. If DTC is displayed, erase it, refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . >> GO TO 12. 12. FINAL CHECK When DTC was detected in step 2, perform DTC Confirmation Procedure or Overall Function Check again, and then make sure that the malfunction have been repaired securely. When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and make sure that the symptom is not detected. OK or NG NG (DTC*1 is detected)>>GO TO 10. NG (Symptom remains)>>GO TO 6. OK >> 1. Before returning the vehicle to the customer, make sure to erase unnecessary DTC*1 in ECM and TCM (Transmission Control Module). (Refer to EC-64, "HOW TO ERASE EMISSIONRELATED DIAGNOSTIC INFORMATION" and AT-44, "HOW TO ERASE DTC" or AT-406, "HOW TO ERASE DTC" .) 2. If the completion of SRT is needed, drive vehicle under the specific driving pattern. Refer to EC61, "Driving Pattern" . 3. INSPECTION END *1: Include 1st trip DTC. *2: Include 1st trip freeze frame data. DIAGNOSTIC WORKSHEET Description There are many operating conditions that lead to the malfunction of engine components. A good grasp of such conditions can make troubleshooting faster and more accurate. In general, each customer feels differently about an incident. It is important to fully understand the symptoms or conditions for a customer complaint. Utilize a diagnostic worksheet like the one on the next page in order to organize all the information for troubleshooting. Some conditions may cause the MIL to come on steady or blink and DTC to be detected. Examples: ● Vehicle ran out of fuel, which caused the engine to misfire. ● Fuel filler cap was left off or incorrectly screwed on, allowing fuel to evaporate into the atmosphere. Revision: July 2006 EC-92 SEF907L 2006 Quest TROUBLE DIAGNOSIS Worksheet Sample A EC C D E F G H I J K L M MTBL0017 Revision: July 2006 EC-93 2006 Quest TROUBLE DIAGNOSIS DTC Inspection Priority Chart EBS00QW0 If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart. NOTE: ● If DTC U1000 and/or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . Priority 1 Detected items (DTC) ● U1000 U1001 CAN communication line ● U1010 CAN communication ● P0101 P0102 P0103 Mass air flow sensor ● P0112 P0113 P0127 Intake air temperature sensor ● P0117 P0118 P0125 Engine coolant temperature sensor ● P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor ● P0128 Thermostat function ● P0181 P0182 P0183 Fuel tank temperature sensor ● P0327 P0328 Knock sensor ● P0335 Crankshaft position sensor (POS) ● P0340 P0345 Camshaft position sensor (PHASE) ● P0403 EGR volume control valve ● P0460 P0461 P0462 P0463 Fuel level sensor ● P0500 Vehicle speed sensor ● P0605 ECM ● P0643 Sensor power supply ● P0705 P0850 Park/Neutral position (PNP) switch ● P1610 - P1615 NATS ● P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor Revision: July 2006 EC-94 2006 Quest TROUBLE DIAGNOSIS Priority 2 3 Detected items (DTC) A ● P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater ● P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater ● P0075 P0081 Intake valve timing control solenoid valve ● P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1 ● P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2 ● P0405 P0406 EGR temperature sensor ● P0441 EVAP control system purge flow monitoring ● P0443 P0444 P0445 EVAP canister purge volume control solenoid valve ● P0447 P0448 EVAP canister vent control valve ● P0451 P0452 P0453 EVAP control system pressure sensor ● P0550 Power steering pressure sensor ● P0603 ECM power supply ● P1217 Engine over temperature (OVERHEAT) ● P1800 VIAS control solenoid valve ● P1805 Brake switch ● P2100 P2103 Throttle control motor relay ● P2101 Electric throttle control function ● P2118 Throttle control motor ● P0011 P0021 Intake valve timing control ● P0171 P0172 P0174 P0175 Fuel injection system function ● P0300 - P0306 Misfire ● P0400 P1402 EGR system ● P0420 P0430 Three way catalyst function ● P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK) ● P0455 EVAP control system (GROSS LEAK) ● P0506 P0507 Idle speed control system ● P0710 P0711 P0717 P0720 P0722 P0725 P0731 P0732 P0733 P0734 P0735 P0740 P0744 P0745 P0750 P0755 P0760 P0762 P0765 P0770 P0775 P0780 P0795 P0797 P0882 P1705 P1760 A/T related sensors, solenoid valves and switches J ● P1148 P1168 Closed loop control K ● P1211 TCS control unit ● P1212 TCS communication line ● P1564 ASCD steering switch ● P1572 ASCD brake switch ● P1574 ASCD vehicle speed sensor ● P2119 Electric throttle control actuator Revision: July 2006 EC C D E F G H I L M EC-95 2006 Quest TROUBLE DIAGNOSIS Fail-safe Chart EBS00QW1 When the DTC listed below is detected, the ECM enters fail-safe mode and the MIL lights up. DTC No. Detected items Engine operating condition in fail-safe mode P0102 P0103 Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut. P0117 P0118 Engine coolant temperature sensor circuit Engine coolant temperature will be determined by ECM based on the time after turning ignition switch ON or START. CONSULT-II displays the engine coolant temperature decided by ECM. Condition Engine coolant temperature decided (CONSULT-II display) Just as ignition switch is turned ON or START 40°C (104°F) More than approx. 4 minutes after ignition ON or START 80°C (176°F) Except as shown above 40 - 80°C (104 - 176°F) (Depends on the time) When the fail-safe system for engine coolant temperature sensor is activated, the cooling fan operates while engine is running. P0122 P0123 P0222 P0223 P2135 Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. P2100 P2103 Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. P2101 Electric throttle control function ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. P2118 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. P2119 Electric throttle control actuator (When electric throttle control actuator does not function properly due to the return spring malfunction:) ECM controls the electric throttle actuator by regulating the throttle opening around the idle position. The engine speed will not rise more than 2,000 rpm. (When ECM detects the throttle valve is stuck open:) While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the engine stalls. The engine can restart in N or P position, and engine speed will not exceed 1,000 rpm or more. (When throttle valve opening angle in fail-safe mode is not in specified range:) ECM controls the electric throttle control actuator by regulating the throttle opening to 20 degrees or less. P2122 P2123 P2127 P2128 P2138 ● Accelerator pedal position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is malfunction on engine control system. Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means of operating fail-safe function. The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands the driver to repair the malfunction. Engine operating condition in fail-safe mode Revision: July 2006 Engine speed will not rise more than 2,500 rpm due to the fuel cut EC-96 2006 Quest TROUBLE DIAGNOSIS Symptom Matrix Chart EBS00QW2 A SYSTEM — BASIC ENGINE CONTROL SYSTEM 1 1 2 3 2 Fuel pressure regulator system 3 3 4 4 4 Fuel injector circuit 1 1 2 3 2 Evaporative emission system 3 3 4 4 4 Air Positive crankcase ventilation system 3 3 4 4 4 Incorrect idle speed adjustment Ignition EGR BATTERY DEAD (UNDER CHARGE) Fuel pump circuit EXCESSIVE OIL CONSUMPTION Fuel EXCESSIVE FUEL CONSUMPTION AE OVERHEATS/WATER TEMPERATURE HIGH LACK OF POWER/POOR ACCELERATION AD SLOW/NO RETURN TO IDLE SPARK KNOCK/DETONATION AC IDLING VIBRATION HESITATION/SURGING/FLAT SPOT AB ROUGH IDLE/HUNTING ENGINE STALL AA Warranty symptom code HIGH IDLE/LOW IDLE HARD/NO START/RESTART (EXCP. HA) SYMPTOM AF AG AH AJ AK AL AM HA 2 2 4 4 2 2 4 4 4 4 4 1 2 4 EC 3 4 2 C Reference page E F EC-692 4 EC-85 2 EC-684 4 4 EC-34 4 4 4 1 1 1 1 2 2 2 2 1 EC-75 1 2 3 3 Incorrect ignition timing adjustment 3 3 1 1 1 1 1 1 EC-75 Ignition circuit 1 1 2 2 2 2 2 2 EC-698 EGR system Main power supply and ground circuit 2 1 2 2 3 3 3 3 3 Mass air flow sensor circuit 3 2 2 3 3 3 2 3 EC-406, EC-570 3 EC-153 2 Engine coolant temperature sensor circuit 3 EC-221, EC-235 3 3 1 2 2 2 2 2 2 3 Knock sensor circuit 2 Revision: July 2006 2 EC-97 EC-172, EC-244 , EC-255 , EC-265 , EC-275 , EC-656 EC-227, EC-366 , EC-566 , EC-568 , EC-640 Throttle position sensor circuit Accelerator pedal position sensor circuit I J K L EC-197, EC-207 1 A/F sensor 1 circuit 2 EC-414 2 H EC-611, EC-623 1 2 G EC-47 Electric throttle control actuator EGR volume control valve circuit D 2 EC-536, EC-625 , EC-632 , EC-648 1 3 EC-383 2006 Quest M TROUBLE DIAGNOSIS HARD/NO START/RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE) SYMPTOM AA AB AC AD AE AF AG AH AJ AK AL AM HA Crankshaft position sensor (POS) circuit 2 2 EC-388 Camshaft position sensor (PHASE) circuit 3 2 EC-396 Warranty symptom code Vehicle speed signal circuit 2 Power steering pressure sensor circuit 2 ECM 2 Intake valve timing control solenoid valve circuit 3 2 3 3 PNP switch circuit 3 3 3 3 EC-518 EC-524 3 3 3 3 3 2 1 3 2 2 3 3 3 3 3 VIAS control solenoid valve circuit 3 3 EC-529, EC-533 3 EC-190 3 EC-542 1 Refrigerant pressure sensor circuit 2 EC-595 3 Electrical load signal circuit Air conditioner circuit 3 3 4 EC-711 3 2 ABS actuator and electric unit (control unit) 2 3 3 4 3 Reference page 3 3 EC-677 3 3 3 2 ATC-42 or MTC-42 BRC-10 or BRC-56 1 - 6: The numbers refer to the order of inspection. (continued on next page) Revision: July 2006 EC-98 2006 Quest TROUBLE DIAGNOSIS SYSTEM — ENGINE MECHANICAL & OTHER A Fuel ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE) Warranty symptom code HARD/NO START/RESTART (EXCP. HA) SYMPTOM AA AB AC AD AE AF AG AH AJ AK AL AM HA EC Fuel tank Fuel piping 5 5 5 5 5 5 F 5 5 5 5 5 5 — EM-15 Air cleaner EM-15 5 5 5 5 5 5 5 5 1 1 1 1 EM-17 1 1 Generator circuit SC-21 3 Signal plate 6 EM-138 4 AT-107 or AT-455 5 5 5 5 5 5 5 4 5 3 EM-115 Cylinder block Piston 4 Piston ring Connecting rod 6 6 6 6 6 6 6 6 EM-138 Bearing Crankshaft Revision: July 2006 EC-99 L SC-10 1 Cylinder head Cylinder head gasket K SC-4 Starter circuit PNP switch I J 5 EM-17, EM-23 1 H EM-15 5 Air leakage from intake manifold/ Collector/Gasket Battery G — 5 Air duct Electric throttle control actuator Engine E — 5 Air leakage from air duct (Mass air flow sensor — electric throttle control actuator) Cranking D EM-39 Valve deposit Air Reference page FL-8 5 Vapor lock Poor fuel (Heavy weight gasoline, Low octane) C 2006 Quest M TROUBLE DIAGNOSIS Valve mechanism ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE) Warranty symptom code HARD/NO START/RESTART (EXCP. HA) SYMPTOM AA AB AC AD AE AF AG AH AJ AK AL AM HA Reference page Timing chain EM-56 Camshaft EM-56 Intake valve timing control 5 5 5 5 5 5 5 EM-56 5 Intake valve 3 EM-115 Exhaust valve Exhaust Exhaust manifold/Tube/Muffler/ Gasket 5 5 5 5 5 5 5 5 EM-25, EX3 Three way catalyst Lubrication Oil pan/Oil strainer/Oil pump/Oil filter/Oil gallery/Oil cooler 5 Cooling 5 5 5 5 5 5 5 EM-29, LU10 , LU-11 , LU-15 Oil level (Low)/Filthy oil LU-7 Radiator/Hose/Radiator filler cap CO-14 Thermostat 5 CO-22 Water pump Water gallery CO-17 5 5 5 5 5 5 5 4 Cooling fan CO-24 EC-554 5 Coolant level (Low)/Contaminated coolant NVIS (NISSAN Vehicle Immobilizer System — NATS) 5 1 1 CO-8 BL-210 1 - 6: The numbers refer to the order of inspection. Revision: July 2006 EC-100 2006 Quest TROUBLE DIAGNOSIS Engine Control Component Parts Location EBS00QW3 A EC C D E F G H I J K L M BBIA0314E Revision: July 2006 EC-101 2006 Quest TROUBLE DIAGNOSIS BBIA0321E Revision: July 2006 EC-102 2006 Quest TROUBLE DIAGNOSIS A EC C D E F G H I J K L M BBIA0652E : Vehicle front 1. Knock sensor harness connector 2. Camshaft position sensor (PHASE) (bank 1) harness connector 3. Fuel injector harness connector 4. Ignition coil harness connector (bank 1) 5. Ignition coil harness connector (bank 2) 6. Power valve actuator 7. VIAS control solenoid valve 8. Camshaft position sensor (PHASE) (bank 2) harness connector 9. Fuel pump fuse (15A) Revision: July 2006 EC-103 2006 Quest TROUBLE DIAGNOSIS BBIA0330E Revision: July 2006 EC-104 2006 Quest TROUBLE DIAGNOSIS A EC C D E F PBIB1686E G H I J K L M Revision: July 2006 EC-105 2006 Quest TROUBLE DIAGNOSIS BBIA0337E Revision: July 2006 EC-106 2006 Quest TROUBLE DIAGNOSIS A EC C D E F G H I J K L M BBIA0665E : Vehicle front 1. EVAP control system pressure sensor 2. EVAP canister vent control valve 3. EVAP canister 4. Intake manifold collector 5. EVAP canister purge volume control solenoid valve 6. ECM harness connector 7. Accelerator pedal position (APP) sensor harness connector 8. EVAP service port 9. Intake manifold collector Revision: July 2006 EC-107 2006 Quest TROUBLE DIAGNOSIS PBIB2603E Revision: July 2006 EC-108 2006 Quest TROUBLE DIAGNOSIS Vacuum Hose Drawing EBS00QW4 A EC C D E F G H I J K L M BBIA0663E 1. Power valve actuator 4. VIAS control solenoid valve 2. Vacuum tank 3. EVAP canister purge volume control solenoid valve NOTE: Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses. Refer to EC-25, "System Diagram" for Vacuum Control System. Revision: July 2006 EC-109 2006 Quest TROUBLE DIAGNOSIS Circuit Diagram EBS00QW5 BBWA2013E Revision: July 2006 EC-110 2006 Quest TROUBLE DIAGNOSIS A EC C D E F G H I J K L M BBWA1998E Revision: July 2006 EC-111 2006 Quest TROUBLE DIAGNOSIS ECM Harness Connector Terminal Layout EBS00QW6 MBIB0045E ECM Terminals and Reference Value EBS00QW7 PREPARATION 1. 2. ECM is located in the right side of the cowl top (behind the strut tower). Remove ECM harness connector. BBIA0315E 3. 4. When disconnecting ECM harness connector, loosen it with levers as far as they will go as shown in the figure. Connect a break-out box (SST) and Y-cable adapter (SST) between the ECM and ECM harness connector. ● Use extreme care not to touch 2 pins at one time. ● Data is for comparison and may not be exact. BBIA0316E ECM INSPECTION TABLE Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECMs transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 1 WIRE COLOR B ITEM ECM ground CONDITION [Engine is running] ● Idle speed DATA (DC Voltage) Body ground Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed PBIB1584E Revision: July 2006 EC-112 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. 3 WIRE COLOR R ITEM Throttle control motor relay power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) A EC 0 - 14V [Ignition switch: ON] 4 O/L Throttle control motor (Close) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released C D PBIB1104E 0 - 14V E [Ignition switch: ON] 5 W/L Throttle control motor (Open) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed F PBIB1105E G [Engine is running] 6 GR ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 2) H 0 - 1.0V I [Ignition switch: ON] ● Engine stopped [Engine is running] ● J BATTERY VOLTAGE (11 - 14V) K 0 - 1.0V L 2.0 - 3.0V M Engine speed is above 3,600 rpm. [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 950 rpm. [Engine is running] 8 W Electronic controlled engine mount-1 ● For 2 seconds after engine speed is 950 rpm or less. [Engine is running] ● 2 seconds after engine speed is 950 rpm or less. [Engine is running] ● Engine speed is below 950 rpm. BATTERY VOLTAGE (11 - 14V) [Engine is running] 9 W/R Electronic controlled engine mount-2 ● For 2 seconds after engine speed is 950 rpm or more. 0 - 1.0V [Engine is running] ● Revision: July 2006 2 seconds after engine speed is 950 rpm or more. EC-113 2.0 - 3.0V 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] ● Warm-up condition ● Idle speed BATTERY VOLTAGE (11 - 14V) 7 - 12V 10 Y/L Intake valve timing control solenoid valve (Bank 2) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. PBIB1790E [Engine is running] ● Warm-up condition ● Idle speed BATTERY VOLTAGE (11 - 14V) 7 - 12V 11 R/L Intake valve timing control solenoid valve (Bank 1) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. PBIB1790E [Engine is running] 12 W Power steering pressure sensor ● Steering wheel is being turned. [Engine is running] ● Steering wheel is not being turned. [Engine is running] ● Warm-up condition ● Idle speed 0.5 - 4.5V 0.4 - 0.8V Approximately 10V NOTE: The pulse cycle changes depending on rpm at idle 13 W PBIB1041E Crankshaft position sensor (POS) Approximately 10V [Engine is running] ● Engine speed is 2,000 rpm. PBIB1042E Revision: July 2006 EC-114 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. WIRE COLOR ITEM CONDITION [Engine is running] ● Warm-up condition ● Idle speed DATA (DC Voltage) 1.0 - 4.0V EC NOTE: The pulse cycle changes depending on rpm at idle 14 W A C PBIB1039E Camshaft position sensor (PHASE) (Bank 2) D 1.0 - 4.0V E [Engine is running] ● Engine speed is 2,000 rpm. F PBIB1040E 15 W Knock sensor [Engine is running] ● 16 BR 35 O/B 56 V 75 P 17 18 19 20 P/B G L L/W Idle speed Approximately 2.5V G Approximately 3.1V [Engine is running] A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed Approximately 2.6V H Approximately 2.3V Approximately 2.3V EGR volume control valve [Engine is running] ● Idle speed I 0.1 - 14V J BATTERY VOLTAGE [Engine is running] ● Warm-up condition ● Idle speed (11 - 14V) K NOTE: The pulse cycle changes depending on rpm at idle 21 22 23 L/W R/Y R/B Fuel injector No. 5 Fuel injector No. 3 Fuel injector No. 1 L SEC984C BATTERY VOLTAGE M (11 - 14V) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. SEC985C Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed PBIB1584E Revision: July 2006 EC-115 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 25 P ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 1) 0 - 1.0V [Ignition switch: ON] ● Engine stopped [Engine is running] ● Engine speed is above 3,600 rpm. [Engine is running] ● 29 Y/G VIAS control solenoid valve BR EVAP control system pressure sensor Idle speed BATTERY VOLTAGE (11 - 14V) [Engine is running] ● 32 BATTERY VOLTAGE (11 - 14V) Engine speed is between 1,800 and 3,600 rpm. [Ignition switch: ON] [Engine is running] ● Warm-up condition ● Idle speed 0 - 1.0V Approximately 1.8 - 4.8V 1.0 - 4.0V NOTE: The pulse cycle changes depending on rpm at idle 33 Y PBIB1039E Camshaft position sensor (PHASE) (Bank 1) 1.0 - 4.0V [Engine is running] ● Engine speed is 2,000 rpm. PBIB1040E 34 Y/G Intake air temperature sensor Revision: July 2006 [Engine is running] EC-116 Approximately 0 - 4.8V Output voltage varies with intake air temperature. 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) A BATTERY VOLTAGE [Engine is running] 40 41 42 V/W*1 P/R* R/L R/W Fuel injector No. 6 ● Warm-up condition ● Idle speed EC (11 - 14V) C NOTE: The pulse cycle changes depending on rpm at idle SEC984C 2 Fuel injector No. 4 Fuel injector No. 2 D BATTERY VOLTAGE (11 - 14V) E [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. F SEC985C G BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Idle speed ● Accelerator pedal is not depressed even slightly, after engine starting. H I 45 V/R*1 P/R*2 SEC990C EVAP canister purge volume control solenoid valve BATTERY VOLTAGE J (11 - 14V) [Engine is running] ● K Engine speed is about 2,000 rpm (More than 100 seconds after starting engine). L SEC991C 47 R Throttle position sensor power supply [Ignition switch: ON] Approximately 5V 48 G/O EVAP control system pressure sensor power supply [Ignition switch: ON] Approximately 5V 49 BR/Y Refrigerant pressure sensor power supply [Ignition switch: ON] Approximately 5V M [Ignition switch: ON] 50 Y Throttle position sensor 1 Revision: July 2006 ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released More than 0.36V [Ignition switch: ON] ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed EC-117 Less than 4.75V 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 51 W/L Mass air flow sensor ● Warm-up condition ● Idle speed [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm. [Ignition switch: ON] 54 P/L EGR temperature sensor 1.0 - 1.3V 1.6 - 2.0V Less than 4.5V [Engine is running] ● Warm-up condition ● EGR system is operating. 0 - 1.5V [Engine is running] 55 57 W Heated oxygen sensor 2 (Bank 2) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load Approximately 2.6V W/R 58 LG/R 76 O 77 LG [Engine is running] A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed P/L L/R Y/R Approximately 2.3V Approximately 3.1V Approximately 2.3V [Engine is running] 60 61 62 0 - Approximately 1.0V Ignition signal No. 5 Ignition signal No. 3 Ignition signal No. 1 ● Warm-up condition ● Idle speed 0 - 0.4V NOTE: The pulse cycle changes depending on rpm at idle SEC986C 0.1 - 0.6V [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm. SEC987C [Engine is running] 66 G Throttle position sensor ground ● Warm-up condition ● Idle speed Approximately 0V [Engine is running] 67 68 B BR/W Sensor ground PSP sensor power supply Revision: July 2006 ● Warm-up condition ● Idle speed [Ignition switch: ON] EC-118 Approximately 0V Approximately 5V 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) A [Ignition switch: ON] 69 L Throttle position sensor 2 ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released EC Less than 4.75V C [Ignition switch: ON] ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed More than 0.36V D [Engine is running] 70 73 W Y/B Refrigerant pressure sensor Engine coolant temperature sensor ● Warm-up condition ● Both A/C switch and blower switch: ON (Compressor operates.) [Engine is running] 1.0 - 4.0V E Approximately 0 - 4.8V Output voltage varies with engine coolant temperature. F [Engine is running] 74 W Heated oxygen sensor 2 (Bank 1) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load G 0 - Approximately 1.0V H [Engine is running] 78 B Heated oxygen sensor 2 ground ● Warm-up condition ● Idle speed [Engine is running] 79 80 81 GR/R GR G/R Ignition signal No. 6 Ignition signal No. 4 Ignition signal No. 2 ● Warm-up condition ● Idle speed I Approximately 0V J 0 - 0.4V K NOTE: The pulse cycle changes depending on rpm at idle SEC986C 0.1 - 0.6V M [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm. SEC987C [Engine is running] 82 B APP sensor 1 ground ● Warm-up condition ● Idle speed Approximately 0V [Engine is running] 83 85 G SB APP sensor 2 ground Data link connector ● Warm-up condition ● Idle speed [Ignition switch: ON] ● Revision: July 2006 L CONSULT-II or GST is disconnected. EC-119 Approximately 0V Approximately 5V - Battery voltage (11 - 14V) 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 86 P CAN communication line [Ignition switch: ON] Approximately 1.1 - 2.3V Output voltage varies with the communication status. 90 R/V APP sensor 1 power supply [Ignition switch: ON] Approximately 5V 91 O APP sensor 2 power supply [Ignition switch: ON] Approximately 5V 94 L CAN communication line [Ignition switch: ON] Approximately 2.5 - 3.2V Output voltage varies with the communication status. [Ignition switch: ON] 98 W/B Accelerator pedal position sensor 2 ● Engine stopped ● Accelerator pedal: Fully released [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed [Ignition switch: ON] ● ASCD steering switch: OFF [Ignition switch: ON] ● 99 G/Y ASCD steering switch MAIN switch: Pressed [Ignition switch: ON] ● CANCEL switch: Pressed [Ignition switch: ON] ● RESUME/ACCELERATE switch: Pressed [Ignition switch: ON] ● SET/COAST switch: Pressed [Ignition switch: OFF] ● 101 R/G Stop lamp switch Brake pedal: Fully released [Ignition switch: OFF] ● Brake pedal: Slightly depressed [Ignition switch: ON] ● 102 O/B PNP switch Shift lever: P or N [Ignition switch: ON] ● 104 O Throttle control motor relay 0.25 - 0.5V Except the above gear position 2.0 - 2.5V Approximately 4V Approximately 0V Approximately 1V Approximately 3V Approximately 2V Approximately 0V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) Approximately 0V [Ignition switch: OFF] BATTERY VOLTAGE (11 - 14V) [Ignition switch: ON] 0 - 1.0V [Ignition switch: ON] 106 107 W R/L Accelerator pedal position sensor 1 Fuel tank temperature sensor ● Engine stopped ● Accelerator pedal: Fully released [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed [Engine is running] [Ignition switch: ON] ● 108 G/B ASCD brake switch Brake pedal: Fully released [Ignition switch: ON] ● Revision: July 2006 0.5 - 1.0V Brake pedal: Slightly depressed EC-120 4.2 - 4.8V Approximately 0 - 4.8V Output voltage varies with fuel tank temperature. BATTERY VOLTAGE (11 - 14V) Approximately 0V 2006 Quest TROUBLE DIAGNOSIS TERMINAL NO. 109 WIRE COLOR R ITEM Ignition switch CONDITION [Ignition switch: OFF] 0V [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● More than a few seconds after turning ignition switch OFF A DATA (DC Voltage) EC C 0 - 1.5V D BATTERY VOLTAGE (11 - 14V) [Ignition switch: ON] ● 113 B/O Fuel pump relay E For 1 second after turning ignition switch ON 0 - 1.5V [Engine is running] [Ignition switch: ON] ● More than 1 second after turning ignition switch ON [Engine is running] G 115 116 B B ECM ground 117 LG/B EVAP canister vent control valve [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) 119 120 R/G R/G Power supply for ECM [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) 121 G Power supply for ECM (Back-up) [Ignition switch: OFF] BATTERY VOLTAGE (11 - 14V) ● F BATTERY VOLTAGE (11 - 14V) Body ground Idle speed H I *1: 4-speed A/T models *2: 5-speed A/T models J : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) CONSULT-II Function (ENGINE) EBS00QW8 FUNCTION Diagnostic test mode Function Work support This mode enables a technician to adjust some devices faster and more accurately by following the indications on the CONSULT-II unit. Self-diagnostic results Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data can be read and erased quickly.* Data monitor Input/Output data in the ECM can be read. Data monitor (SPEC) Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the other data monitor items can be read. CAN diagnostic support monitor The results of transmit/receive diagnosis of CAN communication can be read. Active test Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also shifts some parameters in a specified range. DTC & SRT confirmation The status of system monitoring tests and the self-diagnosis status/result can be confirmed. Function test This mode is used to inform customers when their vehicle condition requires periodic maintenance. ECM part number ECM part number can be read. *: The following emission-related diagnostic information is cleared when the ECM memory is erased. ● Diagnostic trouble codes ● 1st trip diagnostic trouble codes ● Freeze frame data ● 1st trip freeze frame data Revision: July 2006 K EC-121 2006 Quest L M TROUBLE DIAGNOSIS ● System readiness test (SRT) codes ● Test values ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION DIAGNOSTIC TEST MODE SELF-DIAGNOSTIC RESULTS Item WORK SUPPORT 1 DTC* FREEZE FRAME DATA MONITOR DATA MONITOR (SPEC) × DTC & SRT CONFIRMATION ACTIVE TEST INPUT ENGINE CONTROL COMPONENT PARTS DATA*2 SRT STATUS DTC WORK SUPPORT Crankshaft position sensor (POS) × × × Camshaft position sensor (PHASE) × × × × Mass air flow sensor × × × Engine coolant temperature sensor × × × A/F sensor 1 × × × × × Heated oxygen sensor 2 × × × × × Wheel sensor × × × Accelerator pedal position sensor × × × Throttle position sensor × × × Fuel tank temperature sensor × × × EVAP control system pressure sensor × × × Intake air temperature sensor × × × EGR temperature sensor × × × Knock sensor × Refrigerant pressure sensor × × Closed throttle position switch (accelerator pedal position sensor signal) × × Air conditioner switch × × × × × × Park/neutral position (PNP) switch × × × Stop lamp switch × × × Power steering pressure sensor × × × Battery voltage × × Load signal × × Fuel level sensor × × × ASCD steering switch × × × ASCD brake switch × × × Revision: July 2006 EC-122 × × 2006 Quest TROUBLE DIAGNOSIS DIAGNOSTIC TEST MODE SELF-DIAGNOSTIC RESULTS DTC & SRT CONFIRMATION DATA MONITOR DATA MONITOR (SPEC) ACTIVE TEST Fuel injector × × × Power transistor (Ignition timing) × × × × × × × × × × × × Item WORK SUPPORT DTC* 1 FREEZE FRAME Throttle control motor relay × Throttle control motor × EVAP canister purge volume control solenoid valve × Air conditioner relay Fuel pump relay OUTPUT ENGINE CONTROL COMPONENT PARTS DATA*2 × SRT STATUS D × × E × × × × EGR volume control valve × × × × A/F sensor 1 heater × × × ×*3 Heated oxygen sensor 2 heater × × × ×*3 × × × × Intake valve timing control solenoid valve × × × × VIAS control solenoid valve × × × × × × × × × × Electronic controlled engine mount × Calculated load value EC C Cooling fan relay EVAP canister vent control valve DTC WORK SUPPORT A F G H I X: Applicable *1: This item includes 1st trip DTCs. *2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-56 . *3: Always “COMPLT” is displayed. J K INSPECTION PROCEDURE CAUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication. 1. Turn ignition switch OFF. 2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector, which is located under driver's side dash panel. 3. Turn ignition switch ON. BBIA0336E Revision: July 2006 EC-123 2006 Quest L M TROUBLE DIAGNOSIS 4. Touch “START (NISSAN BASED VHCL)”. BCIA0029E 5. Touch “ENGINE”. If “ENGINE” is not indicated, go to GI-38, "CONSULT-II Data Link Connector (DLC) Circuit" . BCIA0030E 6. Perform each diagnostic test mode according to each service procedure. For further information, see the CONSULT-II Operation Manual. BCIA0031E WORK SUPPORT MODE Work Item WORK ITEM CONDITION USAGE FUEL PRESSURE RELEASE ● FUEL PUMP WILL STOP BY TOUCHING “START” DURING IDLING. CRANK A FEW TIMES AFTER ENGINE STALLS. When releasing fuel pressure from fuel line IDLE AIR VOL LEARN ● THE IDLE AIR VOLUME THAT KEEPS THE ENGINE WITHIN THE SPECIFIED RANGE IS MEMORIZED IN ECM. When learning the idle air volume SELF-LEARNING CONT ● THE COEFFICIENT OF SELF-LEARNING CONTROL MIXTURE RATIO RETURNS TO THE ORIGINAL COEFFICIENT. When clearing the coefficient of self-learning control value Revision: July 2006 EC-124 2006 Quest TROUBLE DIAGNOSIS WORK ITEM EVAP SYSTEM CLOSE CONDITION USAGE CLOSE THE EVAP CANISTER VENT CONTROL VALVE IN ORDER TO MAKE EVAP SYSTEM CLOSE UNDER THE FOLLOWING CONDITIONS. When detecting EVAP vapor leak point of EVAP system EC ● IGN SW “ON” ● ENGINE NOT RUNNING ● AMBIENT TEMPERATURE IS ABOVE 0°C (32°F). ● NO VACUUM AND NO HIGH PRESSURE IN EVAP SYSTEM ● A C FUEL TANK TEMP. IS MORE THAN 0°C (32°F). ● WITHIN 10 MINUTES AFTER STARTING “EVAP SYSTEM CLOSE” ● WHEN TRYING TO EXECUTE “EVAP SYSTEM CLOSE” UNDER THE CONDITION EXCEPT ABOVE, CONSULTII WILL DISCONTINUE IT AND DISPLAY APPROPRIATE INSTRUCTION. E NOTE: WHEN STARTING ENGINE, CONSULT-II MAY DISPLAY “BATTERY VOLTAGE IS LOW. CHARGE BATTERY”, EVEN IN USING CHARGED BATTERY. F D TARGET IDLE RPM ADJ* ● IDLE CONDITION When setting target idle speed TARGET IGN TIM ADJ* ● IDLE CONDITION When adjusting target ignition timing VIN REGISTRATION ● IN THIS MODE, VIN IS REGISTERED IN ECM. When registering VIN in ECM G H *: This function is not necessary in the usual service procedure. SELF-DIAG RESULTS MODE Self Diagnostic Item I Regarding items of DTC and 1st trip DTC, refer toEC-8, "INDEX FOR DTC" .) Freeze Frame Data and 1st Trip Freeze Frame Data Freeze frame data item* DIAG TROUBLE CODE [PXXXX] FUEL SYS-B1 J Description ● The engine control component part/control system has a trouble code, it is displayed as PXXXX. (Refer to EC-8, "INDEX FOR DTC" .) ● “Fuel injection system status” at the moment a malfunction is detected is displayed. ● One mode in the following is displayed. “Mode2”: Open loop due to detected system malfunction “Mode3”: Open loop due to driving conditions (power enrichment, deceleration enleanment) “Mode4”: Closed loop - using oxygen sensor(s) as feedback for fuel control “Mode5”: Open loop - has not yet satisfied condition to go to closed loop FUEL SYS-B2 L M CAL/LD VALUE [%] ● The calculated load value at the moment a malfunction is detected is displayed. COOLANT TEMP [°C] or [°F] ● The engine coolant temperature at the moment a malfunction is detected is displayed. L-FUEL TRM-B1 [%] ● “Long-term fuel trim” at the moment a malfunction is detected is displayed. ● The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule than short-term fuel trim. ● “Short-term fuel trim” at the moment a malfunction is detected is displayed. ● The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel schedule. ENGINE SPEED [rpm] ● The engine speed at the moment a malfunction is detected is displayed. VEHICL SPEED [km/h] or [mph] ● The vehicle speed at the moment a malfunction is detected is displayed. ABSOL TH-P/S [%] ● The throttle valve opening angle at the moment a malfunction is detected is displayed. L-FUEL TRM-B2 [%] S-FUEL TRM-B1 [%] S-FUEL TRM-B2 [%] Revision: July 2006 EC-125 K 2006 Quest TROUBLE DIAGNOSIS Freeze frame data item* Description B/FUEL SCHDL [msec] ● The base fuel schedule at the moment a malfunction is detected is displayed. INT/A TEMP SE [°C] or [°F] ● The intake air temperature at the moment a malfunction is detected is displayed. *: The items are the same as those of 1st trip freeze frame data. DATA MONITOR MODE Monitored Item Monitored item [Unit] ECM INPUT SIGNALS ×: Applicable MAIN SIGNALS Description ● ENG SPEED [rpm] × × MAS A/F SE-B1 [V] × × B/FUEL SCHDL [msec] × A/F ALPHA-B1 [%] × COOLAN TEMP/S [°C] or [°F] × × A/F SEN1 (B1) [V] × × A/F SEN1 (B2) [V] × HO2S2 (B1) [V] × HO2S2 (B2) [V] × HO2S2 MNTR (B1) [RICH/LEAN] × HO2S2 MNTR (B2) [RICH/LEAN] × VHCL SPEED SE [km/h] or [mph] × × BATTERY VOLT [V] × × ACCEL SEN 1 [V] × × ACCEL SEN 2 [V] × THRTL SEN 1 [V] × THRTL SEN 2 [V] × Revision: July 2006 ● The signal voltage of the mass air flow sensor is displayed. ● “Base fuel schedule” indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction. ● The mean value of the air-fuel ratio feedback correction factor per cycle is indicated. × A/F ALPHA-B2 [%] × Indicates the engine speed computed from the signal of the crankshaft position sensor (POS) and camshaft position sensor (PHASE). ● The engine coolant temperature (determined by the signal voltage of the engine coolant temperature sensor) is displayed. ● The A/F signal computed from the input signal of the A/F sensor 1 is displayed. ● The signal voltage of the heated oxygen sensor 2 is displayed. ● Display of heated oxygen sensor 2 signal: RICH: means the amount of oxygen after three way catalyst is relatively small. LEAN: means the amount of oxygen after three way catalyst is relatively large. ● The vehicle speed computed from the vehicle speed signal sent from combination meter is displayed. ● The power supply voltage of ECM is displayed. ● The accelerator pedal position sensor signal voltage is displayed. ● The throttle position sensor signal voltage is displayed. EC-126 Remarks ● Accuracy becomes poor if engine speed drops below the idle rpm. ● If the signal is interrupted while the engine is running, an abnormal value may be indicated. ● When the engine is stopped, a certain value is indicated. ● When the engine is stopped, a certain value is indicated. ● This data also includes the data for the airfuel ratio learning control. ● When the engine coolant temperature sensor is open or short-circuited, ECM enters fail-safe mode. The engine coolant temperature determined by the ECM is displayed. ● When the engine is stopped, a certain value is indicated. ● ACCEL SEN 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal. ● THRTL SEN 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal. 2006 Quest TROUBLE DIAGNOSIS Monitored item [Unit] ECM INPUT SIGNALS MAIN SIGNALS Description ● The fuel temperature (determined by the signal voltage of the fuel tank temperature sensor) is displayed. ● The intake air temperature (determined by the signal voltage of the intake air temperature sensor) is indicated. ● The signal voltage of EGR temperature sensor is displayed. FUEL T/TMP SE [°C] or [°F] × INT/A TEMP SE [°C] or [°F] × × EGR TEMP SEN [V] × × EVAP SYS PRES [V] × ● The signal voltage of EVAP control system pressure sensor is displayed. FUEL LEVEL SE [V] × ● The signal voltage of the fuel level sensor is displayed. ● START SIGNAL [ON/OFF] × × Indicates start signal status [ON/OFF] computed by the ECM according to the signals of engine speed and battery voltage. CLSD THL POS [ON/OFF] × × AIR COND SIG [ON/OFF] × × P/N POSI SW [ON/OFF] × × PW/ST SIGNAL [ON/OFF] × × [ON/OFF] condition of the power steering system (determined by the signal voltage of the power steering pressure sensor signal) is indicated. J × ● Indicates [ON/OFF] condition from heater fan switch signal. BRAKE SW [ON/OFF] × ● Indicates [ON/OFF] condition from the stop lamp switch signal. ● Indicates the actual fuel injection pulse width compensated by ECM according to the input signals. ● Indicates the ignition timing computed by ECM according to the input signals. ● “Calculated load value” indicates the value of the current air flow divided by peak air flow. ● Indicates the mass air flow computed by ECM according to the signal voltage of the mass air flow sensor. INJ PULSE-B2 [msec] CAL/LD VALUE [%] G H Indicates [ON/OFF] condition from the electrical load signal. ON: Rear window defogger switch is ON and/or lighting switch is in 2nd position. OFF: Both rear window defogger switch and lighting switch are OFF. HEATER FAN SW [ON/OFF] Revision: July 2006 F I Indicates [ON/OFF] condition from ignition switch signal. MASS AIRFLOW [g·m/s] After starting the engine, [OFF] is displayed regardless of the starter signal. Indicates [ON/OFF] condition from the park/neutral position (PNP) switch signal. ● × ● ● × IGN TIMING [BTDC] E Indicates [ON/OFF] condition of the air conditioner switch as determined by the air conditioner signal. × × D ● IGNITION SW [ON/OFF] INJ PULSE-B1 [msec] C Indicates idle position [ON/OFF] computed by ECM according to the accelerator pedal position sensor signal. ● × EC ● ● LOAD SIGNAL [ON/OFF] A Remarks EC-127 K L M ● When the engine is stopped, a certain computed value is indicated. ● When the engine is stopped, a certain value is indicated. 2006 Quest TROUBLE DIAGNOSIS Monitored item [Unit] ECM INPUT SIGNALS MAIN SIGNALS Description ● Indicates the EVAP canister purge volume control solenoid valve control value computed by the ECM according to the input signals. ● The opening becomes larger as the value increases. ● Indicates the EGR volume control value computed by the ECM according to the input signals. ● The opening becomes larger as the value increases. ● Indicates [°CA] of intake camshaft advanced angle. ● The control value of the intake valve timing control solenoid valve (determined by ECM according to the input signals) is indicated. ● The advance angle becomes larger as the value increases. ● The control condition of the VIAS control solenoid valve (determined by ECM according to the input signals) is indicated. ON: VIAS control solenoid valve is operating. OFF: VIAS control solenoid valve is not operating. ● The air conditioner relay control condition (determined by ECM according to the input signals) is indicated. ● The control condition of the electronic controlled engine mount (determined by ECM according to the input signals) is indicated. IDLE: Engine speed is below 950 rpm TRVL: Engine speed is above 950 rpm ● Indicates the fuel pump relay control condition determined by ECM according to the input signals. ● The control condition of the EVAP canister vent control valve (determined by ECM according to the input signals) is indicated. ON: Closed OFF: Open ● Indicates the throttle control motor relay control condition determined by the ECM according to the input signals. PURG VOL C/V [%] EGR VOL CON/V [step] × INT/V TIM (B1) [°CA] INT/V TIM (B2) [°CA] INT/V SOL (B1) [%] INT/V SOL (B2) [%] VIAS S/V [ON/OFF] AIR COND RLY [ON/OFF] × ENGINE MOUNT [IDLE/TRVL] FUEL PUMP RLY [ON/OFF] × VENT CONT/V [ON/OFF] THRTL RELAY [ON/OFF] Revision: July 2006 × EC-128 Remarks 2006 Quest TROUBLE DIAGNOSIS Monitored item [Unit] ECM INPUT SIGNALS MAIN SIGNALS Description ● COOLING FAN [HI/MID/LOW/OFF] HO2S2 HTR (B1) [ON/OFF] I/P PULLY SPD [rpm] VEHICLE SPEED [km/h] or [MPH] Indicates [ON/OFF] condition of heated oxygen sensor 2 heater determined by ECM according to the input signals. ● Indicates the engine speed computed from the turbine revolution sensor signal. ● Indicates the vehicle speed computed from the revolution sensor signal. ● Display the condition of idle air volume learning YET: Idle air volume learning has not been performed yet. CMPLT: Idle air volume learning has already been performed successfully. ● Distance traveled while MIL is activated. ● Indicates A/F sensor 1 heater control value computed by ECM according to the input signals. ● The current flow to the heater becomes larger as the value increases. ● The signal voltage from the refrigerant pressure sensor is displayed. ● The vehicle speed computed from the vehicle speed signal sent from TCM is displayed. ● The preset vehicle speed is displayed. MAIN SW [ON/OFF] ● Indicates [ON/OFF] condition from MAIN switch signal. CANCEL SW [ON/OFF] ● Indicates [ON/OFF] condition from CANCEL switch signal. RESUME/ACC SW [ON/OFF] ● Indicates [ON/OFF] condition from RESUME/ACCELERATE switch signal. SET SW [ON/OFF] ● Indicates [ON/OFF] condition from SET/COAST switch signal. BRAKE SW1 [ON/OFF] ● Indicates [ON/OFF] condition from ASCD brake switch signal. BRAKE SW2 [ON/OFF] ● Indicates [ON/OFF] condition of stop lamp switch signal. ● Indicates the vehicle cruise condition. NON: Vehicle speed is maintained at the ASCD set speed. CUT: Vehicle speed increased to excessively high compared with the ASCD set speed, and ASCD operation is cut off. A/F S1 HTR (B1) [%] A/F S1 HTR (B2) [%] AC PRESS SEN [V] VHCL SPEED SE [km/h] or [mph] SET VHCL SPD [km/h] or [m.p.h.] VHCL SPD CUT [NON/CUT] Revision: July 2006 EC C D E IDL A/V LEARN [YET/CMPLT] TRVL AFTER MIL [km] or [mile] The control condition of the cooling fan (determined by ECM according to the input signals) is indicated. HI: High speed operation MID: Middle speed operation LOW: Low speed operation OFF: Stop ● HO2S2 HTR (B2) [ON/OFF] A Remarks EC-129 F G H I J K L M 2006 Quest TROUBLE DIAGNOSIS Monitored item [Unit] ECM INPUT SIGNALS MAIN SIGNALS Description ● Indicates the vehicle cruise condition. NON: Vehicle speed is maintained at the ASCD set speed. CUT: Vehicle speed decreased to excessively low compared with the ASCD set speed, and ASCD operation is cut off. ● Indicates [ON/OFF] condition of A/T O/D according to the input signal from the TCM. ● Indicates [ON/OFF] condition of A/T O/D cancel signal sent from the TCM. ● Indicates [ON/OFF] condition of CRUISE lamp determined by the ECM according to the input signals. ● Indicates [ON/OFF] condition of SET lamp determined by the ECM according to the input signals. LO SPEED CUT [NON/CUT] AT OD MONITOR [ON/OFF] AT OD CANCEL [ON/OFF] CRUISE LAMP [ON/OFF] SET LAMP [ON/OFF] Remarks Voltage [V] Frequency [msec], [Hz] or [%] ● DUTY-HI Voltage, frequency, duty cycle or pulse width measured by the probe. ● Only “#” is displayed if item is unable to be measured. ● Figures with “#”s are temporary ones. They are the same figures as an actual piece of data which was just previously measured. DUTY-LOW PLS WIDTH-HI PLS WIDTH-LOW NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. DATA MONITOR (SPEC) MODE Monitored Item Monitored item [Unit] ECM INPUT SIGNALS MAIN SIGNALS ENG SPEED [rpm] × × MAS A/F SE-B1 [V] × × B/FUEL SCHDL [msec] A/F ALPHA-B1 [%] A/F ALPHA-B2 [%] Description ● Indicates the engine speed computed from the signal of the crankshaft position sensor (POS) and camshaft position sensor (PHASE). ● The signal voltage of the mass air flow sensor specification is displayed. ● “Base fuel schedule” indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction. × ● × The mean value of the air-fuel ratio feedback correction factor per cycle is indicated. Remarks ● When engine is running specification range is indicated. ● When engine is running specification range is indicated. ● When engine is running specification range is indicated. ● This data also includes the data for the air-fuel ratio learning control. NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. Revision: July 2006 EC-130 2006 Quest TROUBLE DIAGNOSIS ACTIVE TEST MODE Test Item TEST ITEM CONDITION ● FUEL INJECTION IGNITION TIMING POWER BALANCE COOLING FAN* ENG COOLANT TEMP FUEL PUMP RELAY EGR VOL CONT/V VIAS SOL VALVE ENGINE MOUNTING PURG VOL CONT/V FUEL/T TEMP SEN A ● Engine: Return to the original trouble condition Change the amount of fuel injection using CONSULT-II. ● Engine: Return to the original trouble condition ● Timing light: Set ● Retard the ignition timing using CONSULT-II. ● Engine: After warming up, idle the engine. ● A/C switch: OFF ● Shift lever: P or N ● Cut off each fuel injector signal one at a time using CONSULT-II. ● Ignition switch: ON ● Turn the cooling fan “HI”, “MID”, “LOW” and “OFF” using CONSULT-II. ● Engine: Return to the original trouble condition ● Change the engine coolant temperature using CONSULT-II. ● Ignition switch: ON (Engine stopped) ● Turn the fuel pump relay ON and OFF using CONSULT-II and listen to operating sound. ● Ignition switch: ON (Engine stopped) ● Change the EGR volume control valve opening step using CONSULT-II. ● Ignition switch: ON ● Turn solenoid valve ON and OFF using CONSULT-II and listen to operating sound. ● Ignition switch: ON ● Turn electronic controlled engine mount “IDLE” and “TRVL” with the CONSULT-II. ● Engine: After warming up, run engine at 1,500 rpm. ● Change the EVAP canister purge volume control solenoid valve opening percent using CONSULT-II. ● Revision: July 2006 JUDGEMENT If trouble symptom disappears, see CHECK ITEM. CHECK ITEM (REMEDY) ● Harness and connectors ● Fuel injector ● A/F sensor 1 EC C If trouble symptom disappears, see CHECK ITEM. ● Perform Idle Air Volume Learning D ● Harness and connectors ● Compression ● Fuel injector ● Power transistor ● Spark plug ● Ignition coil ● Harness and connectors ● Cooling fan motor ● IPDM E/R ● Harness and connectors ● Engine coolant temperature sensor ● Fuel injector Fuel pump relay makes the operating sound. ● Harness and connectors ● Fuel pump relay EGR volume control valve makes an operating sound. ● Harness and connectors ● EGR volume control valve Engine runs rough or dies. Cooling fan moves and stops. If trouble symptom disappears, see CHECK ITEM. E F G H I J K L Solenoid valve makes the operating sound. Electronic controlled engine mount makes the operating sound. Engine speed changes according to the opening percent. ● Harness and connectors ● Solenoid valve ● Harness and connectors ● Electronic controlled engine mount ● Harness and connectors ● Solenoid valve M Change the fuel tank temperature using CONSULT-II. EC-131 2006 Quest TROUBLE DIAGNOSIS TEST ITEM VENT CONTROL/V V/T ASSIGN ANGLE CONDITION JUDGEMENT ● Ignition switch: ON (Engine stopped) ● Turn solenoid valve ON and OFF with the CONSULT-II and listen to operating sound. ● Engine: Return to the original trouble condition ● Change intake valve timing using CONSULT-II. CHECK ITEM (REMEDY) Solenoid valve makes an operating sound. If trouble symptom disappears, see CHECK ITEM. ● Harness and connectors ● Solenoid valve ● Harness and connectors ● Intake valve timing control solenoid valve *: Leaving cooling fan “OFF” with CONSULT-II while engine is running may cause the engine to overheat. DTC & SRT CONFIRMATION MODE SRT STATUS Mode For details, refer to EC-56, "SYSTEM READINESS TEST (SRT) CODE" . SRT WORK SUPPORT Mode This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status. DTC WORK SUPPORT Mode Test mode Test item Corresponding DTC No. Reference page P0441 EC-434 P0442 EC-439 P0455 EC-494 EVP V/S LEAK P0456/P1456* P0456 EC-502 PURG VOL CN/V P1444 P0443 EC-447 A/F SEN1 (B1) P1276 P0130 EC-244 A/F SEN1 (B1) P1278/P1279 P0133 EC-275 A/F SEN1 (B2) P1286 P0150 EC-244 A/F SEN1 (B2) P1288/P1289 P0153 EC-275 HO2S2 (B1) P0139 P0139 EC-318 HO2S2 (B1) P1146 P0138 EC-301 HO2S2 (B1) P1147 P0137 EC-288 HO2S2 (B2) P0159 P0159 EC-318 HO2S2 (B2) P1166 P0158 EC-301 HO2S2 (B2) P1167 P0157 EC-288 EGR SYSTEM P0400 P0400 EC-406 EGR SYSTEM P1402 P1402 EC-570 PURG FLOW P0441 EVAPORATIVE SYSTEM A/F SEN1 HO2S2 EGR SYSTEM EVP SML LEAK P0442/P1442* *: DTC P1442 and P1456 does not apply to V42 models but appears in DTC Work Support Mode screens. Revision: July 2006 EC-132 2006 Quest TROUBLE DIAGNOSIS REAL TIME DIAGNOSIS IN DATA MONITOR MODE (RECORDING VEHICLE DATA) Description A CONSULT-II has two kinds of triggers and they can be selected by touching “SETTING” in “DATA MONITOR” mode. EC 1. “AUTO TRIG” (Automatic trigger): ● The malfunction will be identified on the CONSULT-II screen in real time. C In other words, DTC/1st trip DTC and malfunction item will be displayed if the malfunction is detected by ECM. At the moment a malfunction is detected by ECM, “MONITOR” in “DATA MONITOR” screen is changed to “Recording D Data ... xx%” as shown at right, and the data after the malfunction detection is recorded. Then when the percentage reached 100%, “REAL-TIME DIAG” screen is displayed. If E “STOP” is touched on the screen during “Recording Data ... PBIB1593E xx%”, “REAL-TIME DIAG” screen is also displayed. The recording time after the malfunction detection and the recording speed can be changed by “TRIGGER POINT” and F “Recording Speed”. Refer to CONSULT-II OPERATION MANUAL. 2. “MANU TRIG” (Manual trigger): G ● DTC/1st trip DTC and malfunction item will not be displayed automatically on CONSULT-II screen even though a malfunction is detected by ECM. H DATA MONITOR can be performed continuously even though a malfunction is detected. SEF707X I J K L M Revision: July 2006 EC-133 2006 Quest TROUBLE DIAGNOSIS Operation 1. 2. “AUTO TRIG” ● While trying to detect the DTC/1st trip DTC by performing the DTC Confirmation Procedure, be sure to select to “DATA MONITOR (AUTO TRIG)” mode. You can confirm the malfunction at the moment it is detected. ● While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO TRIG)” mode, especially in case the incident is intermittent. When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, components and harness in the “DTC Confirmation Procedure”, the moment a malfunction is found the DTC/ 1st trip DTC will be displayed. (Refer to “INCIDENT SIMULATION TESTS” in GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" .) “MANU TRIG” ● If the malfunction is displayed as soon as “DATA MONITOR” is selected, reset CONSULT-II to “MANU TRIG”. By selecting “MANU TRIG” you can monitor and store the data. The data can be utilized for further diagnosis, such as a comparison with the value for the normal operating condition. PBIB0197E Generic Scan Tool (GST) Function EBS00QW9 DESCRIPTION Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has 8 different functions explained below. ISO9141 is used as the protocol. The name “GST” or “Generic Scan Tool” is used in this service manual. SEF139P Revision: July 2006 EC-134 2006 Quest TROUBLE DIAGNOSIS FUNCTION Diagnostic test mode A Function READINESS TESTS This diagnostic service gains access to current emission-related data values, including analog inputs and outputs, digital inputs and outputs, and system status information. Service $02 (FREEZE DATA) This diagnostic service gains access to emission-related data value which were stored by ECM during the freeze frame. For details, refer to EC-125, "Freeze Frame Data and 1st Trip Freeze Frame Data" . Service $03 DTCs This diagnostic service gains access to emission-related power train trouble codes which were stored by ECM. Service $01 This diagnostic service can clear all emission-related diagnostic information. This includes: Service $04 CLEAR DIAG INFO ● Clear number of diagnostic trouble codes (Service $01) ● Clear diagnostic trouble codes (Service $03) ● Clear trouble code for freeze frame data (Service $01) ● Clear freeze frame data (Service $02) ● Reset status of system monitoring test (Service $01) ● Clear on board monitoring test results (Service $06 and 7) EC C D E F Service $06 (ON BOARD TESTS) This diagnostic service accesses the results of on board diagnostic monitoring tests of specific components/systems that are not continuously monitored. (ON BOARD TESTS) This diagnostic service enables the off board test drive to obtain test results for emissionrelated powertrain components/systems that are continuously monitored during normal driving conditions. G Service $07 This diagnostic service can close EVAP system in ignition switch ON position (Engine stopped). When this diagnostic service is performed, EVAP canister vent control valve can be closed. In the following conditions, this diagnostic service cannot function. H Service $08 Service $09 — (CALIBRATION ID) ● Low ambient temperature ● Low battery voltage ● Engine running ● Ignition switch OFF ● Low fuel temperature ● Too much pressure is applied to EVAP system J K This diagnostic service enables the off-board test device to request specific vehicle information such as Vehicle Identification Number (VIN) and Calibration IDs. L INSPECTION PROCEDURE 1. 2. 3. Turn ignition switch OFF. Connect GST to data link connector, which is located under LH dash panel near the hood opener handle. Turn ignition switch ON. M BBIA0336E Revision: July 2006 I EC-135 2006 Quest TROUBLE DIAGNOSIS 4. Enter the program according to instruction on the screen or in the operation manual. (*: Regarding GST screens in this section, sample screens are shown.) SEF398S 5. Perform each diagnostic service according to each service procedure. For further information, see the GST Operation Manual of the tool maker. SEF416S Revision: July 2006 EC-136 2006 Quest TROUBLE DIAGNOSIS CONSULT-II Reference Value in Data Monitor EBS00QWA Remarks: ● Specification data are reference values. ● Specification data are output/input values which are detected or supplied by the ECM at the connector. * Specification data may not be directly related to their components signals/values/operations. i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and other ignition timing related sensors. MONITOR ITEM CONDITION SPECIFICATION EC C ● Run engine and compare CONSULT-II value with the tachometer indication. MAS A/F SE-B1 ● See EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . B/FUEL SCHDL ● See EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . A/F ALPHA-B1 A/F ALPHA-B2 ● See EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . COOLAN TEMP/S ● Engine: After warming up A/F SEN1 (B1) A/F SEN1 (B2) ● Engine: After warming up ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: after warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load LEAN ←→ RICH G ● Turn drive wheels and compare CONSULT-II value with the speedometer indication. Almost the same speed as the speedometer indication H 11 - 14V ENG SPEED HO2S2 (B1) HO2S2 (B2) HO2S2 MNTR (B1) HO2S2 MNTR (B2) VHCL SPEED SE Almost the same speed as the tachometer indication. A D More than 70°C (158°F) Maintaining engine speed at 2,000 rpm Fluctuates around 1.5V 0 - 0.3V ←→ Approx. 0.6 1.0V BATTERY VOLT ● Ignition switch: ON (Engine stopped) ACCEL SEN 1 ACCEL SEN 2* ● Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released 0.5 - 1.0V Accelerator pedal: Fully depressed 4.2 - 4.8V ● Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released More than 0.36V ● Shift lever: D Accelerator pedal: Fully depressed Less than 4.75V EGR TEMP SEN ● Engine: After warming up Less than 4.5V EVAP SYS PRES ● Ignition switch: ON Approx. 1.8 - 4.8V START SIGNAL ● Ignition switch: ON → START → ON THRTL SEN 1 THRTL SEN 2* CLSD THL POS AIR COND SIG P/N POSI SW PW/ST SIGNAL LOAD SIGNAL IGNITION SW HEATER FAN SW BRAKE SW Revision: July 2006 ● ● ● ● ● ● ● ● Ignition switch: ON (Engine stopped) Engine: After warming up, idle the engine Ignition switch: ON Engine: After warming up, idle the engine Ignition switch: ON Engine: After warming up, idle the engine Ignition switch: ON ON Accelerator pedal: Slightly depressed OFF Air conditioner switch: OFF OFF Air conditioner switch: ON (Compressor operates.) ON Shift lever: P or N ON Shift lever: Except above OFF Steering wheel is not being turned. OFF Steering wheel is being turned. ON Rear window defogger switch is ON and/or lighting switch is in 2nd. ON Rear window defogger switch is OFF and lighting switch is OFF. OFF I J K L M ON → OFF → ON Heater fan is operating. ON Heater fan is not operating. OFF Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON EC-137 F OFF → ON → OFF Accelerator pedal: Fully released Ignition switch: ON → OFF → ON E 2006 Quest TROUBLE DIAGNOSIS MONITOR ITEM INJ PULSE-B1 INJ PULSE-B2 IGN TIMING CAL/LD VALUE MASS AIRFLOW PURG VOL C/V EGR VOL CON/V INT/V TIM (B1) INT/V TIM (B2) INT/V SOL (B1) INT/V SOL (B2) VIAS S/V AIR COND RLY ENGINE MOUNT CONDITION Idle 2.0 - 3.0 msec 2,000 rpm 1.9 - 2.9 msec Idle 13° - 18° BTDC 2,000 rpm 25° - 45° BTDC Idle 5% - 35% 2,500 rpm 5% - 35% Idle 2.0 - 6.0 g·m/s 2,500 rpm 7.0 - 20.0 g·m/s Idle (Accelerator pedal is not depressed even slightly, after engine starting) 0% No load 2,000 rpm — Engine: After warming up Idle 0 step Revving engine from idle up to 3,000 rpm quickly 10 - 55 step Idle −5° - 5°CA 2,000 rpm Approx. 0° - 30°CA Idle 0% - 2% 2,000 rpm Approx. 0% - 50% 1,800 - 3,600 rpm ON Except above conditions OFF Air conditioner switch: OFF OFF Air conditioner switch: ON (Compressor operates) ON Engine speed is below 950 rpm IDLE Engine speed is above 950 rpm TRVL ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● ● ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● ● SPECIFICATION Engine: After warming up idle the engine Engine: Running ● For 1 second after turning ignition switch ON ● Engine running or cranking ● Except above conditions OFF VENT CONT/V ● Ignition switch: ON OFF THRTL RELAY ● Ignition switch: ON ON FUEL PUMP RLY Revision: July 2006 EC-138 ON 2006 Quest TROUBLE DIAGNOSIS MONITOR ITEM CONDITION ● Engine: After warming up, idle the engine ● Air conditioner switch: OFF COOLING FAN HO2S2 HTR (B1) HO2S2 HTR (B2) I/P PULLY SPD VEHICLE SPEED SPECIFICATION A Engine coolant temperature is 94°C (201°F) or less OFF Engine coolant temperature is between 95°C (203°F) and 99°C (210°F) LOW EC Engine coolant temperature is between 100°C (212°F) and 104°C (219°F) MID C Engine coolant temperature is 105°C (221°F) or more HI D ● Engine speed is below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load ● Engine speed: Above 3,600 rpm OFF ● Vehicle speed: More than 20 km/h (12 MPH) Almost the same speed as the tachometer indication ● Turn drive wheels and compare CONSULT-II value with the speedometer indication. Almost the same speed as the speedometer indication ON Vehicle has traveled after MIL has turned ON. E ● Ignition switch: ON A/F S1 HTR (B1) A/F S1 HTR (B2) ● Engine: After warming up, idle the engine ● Engine: Idle ● Both A/C switch and blower fan switch: ON (Compressor operates) ● Turn drive wheels and compare speedometer indication with the CONSULT-II value. Almost the same speed as the speedometer indication SET VHCL SPD ● Engine: Running ASCD: Operating. The preset vehicle speed is displayed. MAIN switch: Pressed ON MAIN SW ● Ignition switch: ON MAIN switch: Released OFF CANCEL switch: Pressed ON CANCEL SW ● CANCEL switch: Released OFF RESUME/ACCELERATE switch: Pressed ON RESUME/ACCELERATE switch: Released OFF SET/COAST switch: Pressed ON SET/COAST switch: Released OFF Brake pedal: Fully released ON VHCL SPEED SE RESUME/ACC SW SET SW BRAKE SW1 BRAKE SW2 CRUISE LAMP SET LAMP ● ● ● ● Ignition switch: ON Ignition switch: ON Ignition switch: ON Ignition switch: ON Ignition switch: ON H 0 - 100% 1.0 - 4.0V Brake pedal: Slightly depressed OFF Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON ● Ignition switch: ON MAIN switch: Pressed at the 1st time → at the 2nd time ON → OFF ● MAIN switch: ON ACSD: Operating ON ● When vehicle speed is between 40 km/h (25 MPH) and 144 km/h (89 MPH) ASCD: Not operating OFF I EC-139 J K L M *: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from ECM terminals voltage signal. Revision: July 2006 G 0 - 65,535 km (0 - 40,723 mile) TRVL AFTER MIL AC PRESS SEN F 2006 Quest TROUBLE DIAGNOSIS Major Sensor Reference Graph in Data Monitor Mode EBS00QWB The following are the major sensor reference graphs in “DATA MONITOR” mode. CLSD THL POS, ACCEL SEN 1, THRTL SEN 1 Below is the data for “CLSD THL POS”, “ACCEL SEN 1” and “THRTL SEN 1” when depressing the accelerator pedal with the ignition switch ON and with shift lever in D position. The signal of “ACCEL SEN 1” and “THRTL SEN 1” should rise gradually without any intermittent drop or rise after “CLSD THL POS” is changed from ON to OFF. PBIB0198E ENG SPEED, MAS A/F SE-B1, THRTL SEN 1, HO2S2 (B1), INJ PULSE-B1 Below is the data for “ENG SPEED”, “MAS A/F SE-B1”, “THRTL SEN 1”, “HO2S2 (B1)” and “INJ PULSE-B1” when revving engine quickly up to 4,800 rpm under no load after warming up engine sufficiently. Each value is for reference, the exact value may vary. PBIB2445E Revision: July 2006 EC-140 2006 Quest TROUBLE DIAGNOSIS A EC C D E F G H I J K L M PBIB2099E Revision: July 2006 EC-141 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE TROUBLE DIAGNOSIS - SPECIFICATION VALUE Description PFP:00031 EBS00QWC The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)” mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONITOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in “DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or more malfunctions. The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the MIL. The SP value will be displayed for the following three items: ● B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correction) ● A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle) ● MAS A/F SE-B1 (The signal voltage of the mass air flow sensor) Testing Condition ● EBS00QWD Vehicle driven distance: More than 5,000 km (3,107 miles) ● Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm2 , 14.25 - 15.12 psi) Atmospheric temperature: 20 - 30°C (68 - 86°F) Engine coolant temperature: 75 - 95°C (167 - 203°F) ● Transmission: Warmed-up*1 ● ● Electrical load: Not applied*2 ● Engine speed: Idle *1: After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID TEMP SE” (A/T fluid temperature sensor signal) indicates more than 60°C (140°F). *2: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight ahead. ● Inspection Procedure EBS00QWE NOTE: Perform “DATA MONITOR (SPEC)” mode in maximum scale display. 1. Perform EC-75, "Basic Inspection" . 2. Confirm that the testing conditions indicated above are met. 3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2” and “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode with CONSULT-II. 4. Make sure that monitor items are within the SP value. 5. If NG, go to EC-143, "Diagnostic Procedure" . SEF601Z Revision: July 2006 EC-142 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE Diagnostic Procedure EBS00QWF A OVERALL SEQUENCE EC C D E F G H I J K L M PBIB2268E Revision: July 2006 EC-143 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE PBIB2548E Revision: July 2006 EC-144 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE DETAILED PROCEDURE A 1. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” 1. 2. 3. Start engine. Confirm that the testing conditions are met. Refer to EC-142, "Testing Condition" . Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. NOTE: Check “A/F ALPHA-B1”, “A/F ALPHA-B2” for approximately 1 minute because they may fluctuate. It is NG if the indication is out of the SP value even a little. OK or NG OK >> GO TO 17. NG (Less than the SP value)>>GO TO 2. NG (More than the SP value)>>GO TO 3. EC C D E PBIB2369E 2. CHECK “B/FUEL SCHDL” F Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and make sure that the indication is within the SP value. OK or NG OK >> GO TO 4. NG (More than the SP value)>>GO TO 19. G H I PBIB2332E J 3. CHECK “B/FUEL SCHDL” Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and make sure that the indication is within the SP value. OK or NG OK >> GO TO 6. NG (More than the SP value)>>GO TO 6. NG (Less than the SP value)>>GO TO 25. K L M PBIB2332E 4. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” 1. 2. 3. 4. Stop the engine. Disconnect PCV hose, and then plug it. Start engine. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. OK or NG OK >> GO TO 5. NG >> GO TO 6. Revision: July 2006 EC-145 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE 5. CHANGE ENGINE OIL 1. 2. Stop the engine. Change engine oil. NOTE: This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving conditions (such as when engine oil temperature does not rise enough since a journey distance is too short during winter). The symptom will not be detected after changing engine oil or changing driving condition. >> INSPECTION END 6. CHECK FUEL PRESSURE Check fuel pressure. (Refer to EC-84, "Fuel Pressure Check" .) OK or NG OK >> GO TO 9. NG (Fuel pressure is too high)>>Replace fuel pressure regulator, refer to EC-85, "FUEL PRESSURE CHECK" . GO TO 8. NG (Fuel pressure is too low)>>GO TO 7. 7. DETECT MALFUNCTIONING PART 1. – – – 2. Check the following. Clogged and bent fuel hose and fuel tube Clogged fuel filter Fuel pump and its circuit (Refer to EC-692, "FUEL PUMP" .) If NG, repair or replace the malfunctioning part. (Refer to EC-84, "Fuel Pressure Check" .) If OK, replace fuel pressure regulator. >> GO TO 8. 8. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” 1. 2. Start engine. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. OK or NG OK >> INSPECTION END NG >> GO TO 9. 9. PERFORM POWER BALANCE TEST 1. 2. Perform “POWER BALANCE” in “ACTIVE TEST” mode. Make sure that the each cylinder produces a momentary engine speed drop. OK or NG OK >> GO TO 12. NG >> GO TO 10. PBIB0133E Revision: July 2006 EC-146 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE 10. DETECT MALFUNCTIONING PART 1. – – – – 2. A Check the following. Ignition coil and its circuit (Refer to EC-698, "IGNITION SIGNAL" .) Fuel injector and its circuit (Refer to EC-684, "FUEL INJECTOR" .) Intake air leakage Low compression pressure (Refer to EM-115, "CHECKING COMPRESSION PRESSURE" .) If NG, repair or replace the malfunctioning part. If OK, replace fuel injector. (It may be caused by leakage from fuel injector or clogging.) EC C D >> GO TO 11. 11. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” E 1. 2. Start engine. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. OK or NG OK >> INSPECTION END NG >> GO TO 12. F G 12. CHECK A/F SENSOR 1 FUNCTION H Perform all DTC Confirmation Procedure related with A/F sensor 1. ● For DTC P0130, P0150, refer to EC-244, "DTC Confirmation Procedure" . ● For DTC P0131, P0151, refer to EC-255, "DTC Confirmation Procedure" . ● For DTC P0132, P0152, refer to EC-265, "DTC Confirmation Procedure" . ● For DTC P0133, P0153, refer to EC-276, "DTC Confirmation Procedure" . ● For DTC P2A00, P2A03, refer to EC-657, "DTC Confirmation Procedure" . OK or NG OK >> GO TO 15. NG >> GO TO 13. I J K 13. CHECK A/F SENSOR 1 CIRCUIT L Perform Diagnostic Procedure according to corresponding DTC. >> GO TO 14. M 14. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” 1. 2. Start engine. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. OK or NG OK >> INSPECTION END NG >> GO TO 15. 15. DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR 1. 2. Stop the engine. Disconnect ECM harness connector. Check pin terminal and connector for damage, and then reconnect it. >> GO TO 16. Revision: July 2006 EC-147 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE 16. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” 1. 2. Start engine. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. OK or NG OK >> INSPECTION END NG >> Detect malfunctioning part according to EC-97, "Symptom Matrix Chart" . 17. CHECK “B/FUEL SCHDL” Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and make sure that the indication is within the SP value. OK or NG OK >> INSPECTION END NG (More than the SP value)>>GO TO 18. NG (Less than the SP value)>>GO TO 25. PBIB2332E 18. DETECT MALFUNCTIONING PART 1. – – – – – 2. – – – – Check for the cause of large engine friction. Refer to the following. Engine oil level is too high Engine oil viscosity Belt tension of power steering, alternator, A/C compressor, etc. is excessive Noise from engine Noise from transmission, etc. Check for the cause of insufficient combustion. Refer to the following. EGR valve stuck Valve clearance malfunction Intake valve timing control function malfunction Camshaft sprocket installation malfunction, etc. >> Repair or replace malfunctioning part, and then GO TO 30. 19. CHECK INTAKE SYSTEM Check for the cause of uneven air flow through mass air flow sensor. Refer to the following. ● Crushed air ducts ● Malfunctioning seal of air cleaner element ● Uneven dirt of air cleaner element ● Improper specification of intake air system OK or NG OK >> GO TO 21. NG >> Repair or replace malfunctioning part, and then GO TO 20. Revision: July 2006 EC-148 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE 20. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”, AND “B/FUEL SCHDL” A Select “A/F ALPHA-B1”, “A/F ALPHA-B2”, and “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. EC OK or NG OK >> INSPECTION END NG (“B/FUEL SCHDL” is more, “A/F ALPHA-B1”, “A/F ALPHA-B2” are less than the SP value)>>GO TO 21. C DISCONNECT AND RECONNECT MASS AIR FLOW SENSOR HARNESS CONNECTOR 21. 1. 2. Stop the engine. Disconnect mass air flow sensor harness connector. Check pin terminal and connector for damage and then reconnect it again. D E >> GO TO 22. 22. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” F 1. 2. Start engine. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. OK or NG OK >> 1. Detect malfunctioning part of mass air flow sensor circuit and repair it. Refer to EC-207, "DTC P0102, P0103 MAF SENSOR" . 2. GO TO 29. NG >> GO TO 23. G H I 23. CHECK “MAS A/F SE-B1” Select “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode, and make sure that the indication is within the SP value. OK or NG OK >> GO TO 24. NG (More than the SP value)>>Replace mass air flow sensor, and then GO TO 29. J K L PBIB2370E 24. REPLACE ECM 1. 2. 3. 4. 5. 6. Replace ECM. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . Perform EC-81, "VIN Registration" . Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> GO TO 29. Revision: July 2006 EC-149 2006 Quest M TROUBLE DIAGNOSIS - SPECIFICATION VALUE 25. CHECK INTAKE SYSTEM Check for the cause of uneven air flow through mass air flow sensor. Refer to the following. ● Crushed air ducts ● Malfunctioning seal of air cleaner element ● Uneven dirt of air cleaner element ● Improper specification of intake air system OK or NG OK >> GO TO 27. NG >> Repair or replace malfunctioning part, and then GO TO 26. 26. CHECK “B/FUEL SCHDL” Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and make sure that the indication is within the SP value. OK or NG OK >> INSPECTION END NG (Less than the SP value)>>GO TO 27. 27. CHECK “MAS A/F SE-B1” Select “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode, and make sure that the indication is within the SP value. OK or NG OK >> GO TO 28. NG (Less than the SP value)>>Replace mass air flow sensor, and then GO TO 30. PBIB2370E 28. CHECK INTAKE SYSTEM Check for the cause of air leak after the mass air flow sensor. Refer to the following. ● Disconnection, looseness, and cracks in air duct ● Looseness of oil filler cap ● Disconnection of oil level gauge ● Open stuck, breakage, hose disconnection, or cracks of PCV valve ● Disconnection or cracks of EVAP purge hose, open stuck of EVAP canister purge volume control solenoid valve ● Malfunctioning seal of rocker cover gasket ● Disconnection, looseness, or cracks of hoses, such as vacuum hose, connecting to intake air system parts ● Malfunctioning seal of intake air system, etc. >> GO TO 30. 29. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”, AND “B/FUEL SCHDL” Select “A/F ALPHA-B1”, “A/F ALPHA-B2”, and “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value. OK or NG OK >> INSPECTION END NG >> Detect malfunctioning part according to EC-97, "Symptom Matrix Chart" . Revision: July 2006 EC-150 2006 Quest TROUBLE DIAGNOSIS - SPECIFICATION VALUE 30. CHECK “B/FUEL SCHDL” A Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and then make sure that the indication is within the SP value. EC OK or NG OK >> INSPECTION END NG >> Detect malfunctioning part according to EC-97, "Symptom Matrix Chart" . C D E F G H I J K L M Revision: July 2006 EC-151 2006 Quest TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT Description PFP:00006 EBS00QWG Intermittent incidents may occur. In many cases, the malfunction resolves itself (the part or circuit function returns to normal without intervention). It is important to realize that the symptoms described in the customer's complaint often do not recur on (1st trip) DTC visits. Realize also that the most frequent cause of intermittent incidents occurrences is poor electrical connections. Because of this, the conditions under which the incident occurred may not be clear. Therefore, circuit checks made as part of the standard diagnostic procedure may not indicate the specific malfunctioning area. Common Intermittent Incidents Report Situations STEP in Work Flow 2 3 or 4 Situation The CONSULT-II is used. The SELF-DIAG RESULTS screen shows time data other than [0] or [1t]. The symptom described by the customer does not recur. 5 (1st trip) DTC does not appear during the DTC Confirmation Procedure. 10 The Diagnostic Procedure for PXXXX does not indicate the malfunctioning area. Diagnostic Procedure EBS00QWH 1. INSPECTION START Erase (1st trip) DTCs. Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . >> GO TO 2. 2. CHECK GROUND TERMINALS Check ground terminals for corroding or loose connection. Refer to EC-161, "Ground Inspection" OK or NG OK >> GO TO 3. NG >> Repair or replace. 3. SEARCH FOR ELECTRICAL INCIDENT Perform GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" , “INCIDENT SIMULATION TESTS”. OK or NG OK >> GO TO 4. NG >> Repair or replace. 4. CHECK CONNECTOR TERMINALS Refer to GI-23, "How to Check Terminal" , “HOW TO PROBE CONNECTORS”, “How to Check Enlarged Contact Spring of Terminal”. OK or NG OK >> INSPECTION END NG >> Repair or replace connector. Revision: July 2006 EC-152 2006 Quest POWER SUPPLY AND GROUND CIRCUIT POWER SUPPLY AND GROUND CIRCUIT Wiring Diagram PFP:24110 A EBS00QWI EC C D E F G H I J K L M BBWA1597E Revision: July 2006 EC-153 2006 Quest POWER SUPPLY AND GROUND CIRCUIT Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 109 WIRE COLOR R ITEM Ignition switch CONDITION [Ignition switch: OFF] 0V [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM Revision: July 2006 DATA (DC Voltage) More than a few seconds after turning ignition switch OFF [Ignition switch: ON] EC-154 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) 2006 Quest POWER SUPPLY AND GROUND CIRCUIT A EC C D E F G H I J K L M BBWA1598E Revision: July 2006 EC-155 2006 Quest POWER SUPPLY AND GROUND CIRCUIT Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 1 WIRE COLOR B ITEM ECM ground CONDITION [Engine is running] ● 115 116 B B ECM ground Idle speed [Engine is running] ● Idle speed Diagnostic Procedure DATA (DC Voltage) Body ground Body ground EBS00QWJ 1. INSPECTION START Start engine. Is engine running? Yes or No Yes >> GO TO 8. No >> GO TO 2. 2. CHECK ECM POWER SUPPLY CIRCUIT-I 1. 2. Turn ignition switch OFF and then ON. Check voltage between ECM terminal 109 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. MBIB0015E 3. DETECT MALFUNCTIONING PART Check the following. ● Fuse block (J/B) connector E30 ● 10A fuse ● Harness for open or short between ECM and fuse >> Repair harness or connectors. Revision: July 2006 EC-156 2006 Quest POWER SUPPLY AND GROUND CIRCUIT 4. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I BBIA0637E OK or NG OK >> GO TO 5. NG >> Repair or replace ground connections. J K 5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I 1. 2. L Disconnect ECM harness connector. Check harness continuity between ECM terminals 1, 115, 116 and ground. Refer to Wiring Diagram. M Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. 6. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F14, E5 ● Harness for open or short between ECM and ground >> Repair open circuit or short to power in harness or connectors. Revision: July 2006 EC-157 2006 Quest POWER SUPPLY AND GROUND CIRCUIT 7. CHECK ECM POWER SUPPLY CIRCUIT-II 1. 2. 3. Reconnect ECM harness connector. Turn ignition switch ON. Check voltage between IPDM E/R terminal 17 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> Go to EC-698, "IGNITION SIGNAL" . NG >> GO TO 8. PBIB1585E 8. CHECK ECM POWER SUPPLY CIRCUIT-III 1. 2. 3. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and then OFF. Check voltage between ECM terminals 119, 120 and ground with CONSULT-II or tester. Voltage: After turning ignition switch OFF, battery voltage will exist for a few seconds, then drop approximately 0V. OK or NG OK >> GO TO 13. NG (Battery voltage does not exist.)>>GO TO 9. NG (Battery voltage exists for more than a few seconds.)>>GO TO 11. PBIB1630E 9. CHECK ECM POWER SUPPLY CIRCUIT-IV 1. 2. Turn ignition switch OFF and wait at least 10 seconds. Check voltage between ECM terminal 111 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 10. NG >> GO TO 11. PBIB1191E Revision: July 2006 EC-158 2006 Quest POWER SUPPLY AND GROUND CIRCUIT 10. 1. 2. 3. CHECK ECM POWER SUPPLY CIRCUIT-V A Disconnect ECM harness connector. Disconnect IPDM E/R harness connector E122. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 18. Refer to Wiring Diagram. EC Continuity should exist. C 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 16. NG >> Repair open circuit or short to ground or short to power in harness or connectors. D 11. CHECK ECM POWER SUPPLY CIRCUIT-VI 1. 2. 3. E Disconnect ECM harness connector. Disconnect IPDM E/R harness connector E121. Check harness continuity between ECM terminal 111 and IPDM E/R terminal 46. Refer to Wiring Diagram. F Continuity should exist. G 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 12. NG >> Repair open circuit or short to ground or short to power in harness or connectors. H 12. CHECK 15A FUSE I 1. Disconnect 15A fuse from IPDM E/R. 2. Check 15A fuse. OK or NG OK >> GO TO 16. NG >> Replace 15A fuse. J K L M Revision: July 2006 EC-159 2006 Quest POWER SUPPLY AND GROUND CIRCUIT 13. CHECK GROUND CONNECTIONS Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 14. NG >> Repair or replace ground connections. 14. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II 1. Check harness continuity between ECM terminals 1, 115, 116 and ground. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to power. OK or NG OK >> GO TO 16. NG >> GO TO 15. 15. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F14, E5 ● Harness for open or short between ECM and ground >> Repair open circuit or short to power in harness or connectors. Revision: July 2006 EC-160 2006 Quest POWER SUPPLY AND GROUND CIRCUIT 16. CHECK INTERMITTENT INCIDENT A Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> Replace IPDM E/R. NG >> Repair open circuit or short to power in harness or connectors. Ground Inspection EC EBS00QWK Ground connections are very important to the proper operation of electrical and electronic circuits. Ground connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can become an unwanted resistance. This unwanted resistance can change the way a circuit works. Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drastically affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even when the ground connection looks clean, there can be a thin film of rust on the surface. When inspecting a ground connection follow these rules: ● Remove the ground bolt or screw. ● Inspect all mating surfaces for tarnish, dirt, rust, etc. ● Clean as required to assure good contact. ● Reinstall bolt or screw securely. ● Inspect for “add-on” accessories which may be interfering with the ground circuit. ● If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one eyelet make sure no ground wires have excess wire insulation. For detailed ground distribution information, refer to “Ground Distribution” in PG section. C D E F G H I J K L M PBIB1870E Revision: July 2006 EC-161 2006 Quest DTC U1000, U1001 CAN COMMUNICATION LINE DTC U1000, U1001 CAN COMMUNICATION LINE Description PFP:23710 EBS00QWL CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. On Board Diagnosis Logic DTC No. Trouble diagnosis name U1000*1 1000*1 U1001*2 DTC detecting condition ● CAN communication line 1001*2 EBS00QWM ● ECM cannot communicate to other control units. ECM cannot communicate for more than the specified time. Possible cause ● Harness or connectors (CAN communication line is open or shorted) *1: This self-diagnosis has the one trip detection logic. *2: The MIL will not light up for this diagnosis. DTC Confirmation Procedure 1. 2. 3. EBS00QWN Turn ignition switch ON and wait at least 3 seconds. Select “DATA MONITOR” mode with CONSULT-II. If 1st trip DTC is detected, go to EC-164, "Diagnostic Procedure" . Revision: July 2006 EC-162 2006 Quest DTC U1000, U1001 CAN COMMUNICATION LINE Wiring Diagram EBS00QWO A EC C D E F G H I J K L M BBWA1599E Revision: July 2006 EC-163 2006 Quest DTC U1000, U1001 CAN COMMUNICATION LINE Diagnostic Procedure EBS00QWP Go to LAN-3, "PRECAUTIONS" . Revision: July 2006 EC-164 2006 Quest DTC U1010 CAN COMMUNICATION DTC U1010 CAN COMMUNICATION Description PFP:23710 A EBS00QWQ CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many elec- EC tronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. C Each control unit transmits/receives data but selectively reads required data only. On Board Diagnosis Logic EBS00QWR D This self-diagnosis has the one trip detection logic. DTC No. U1010 1010 Trouble diagnosis name CAN communication bus DTC detecting condition Initializing CAN communication bus is malfunctioning. DTC Confirmation Procedure Possible cause ● E ECM EBS00QWS WITH CONSULT-II 1. 2. 3. F Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. If DTC is detected, go to EC-166, "Diagnostic Procedure" . G H I SEF058Y J WITH GST Follow the procedure “WITH CONSULT-II” above. K L M Revision: July 2006 EC-165 2006 Quest DTC U1010 CAN COMMUNICATION Diagnostic Procedure EBS00QWT 1. INSPECTION START With CONSULT-II Turn ignition switch ON. Select “SELF-DIAG RESULTS” mode with CONSULT-II. Touch “ERASE”. Perform DTC Confirmation Procedure. See EC-165, "DTC Confirmation Procedure" . 5. Is the DTC U1010 displayed again? 1. 2. 3. 4. With GST Turn ignition switch ON. Select “Service $04” with GST. Touch “ERASE”. Perform DTC Confirmation Procedure. See EC-165, "DTC Confirmation Procedure" . 5. Is the DTC U1010 displayed again? Yes or No Yes >> GO TO 2. No >> INSPECTION END 1. 2. 3. 4. 2. REPLACE ECM 1. 2. 3. 4. 5. 6. Replace ECM. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . Perform EC-81, "VIN Registration" . Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END Revision: July 2006 EC-166 2006 Quest DTC P0011, P0021 IVT CONTROL DTC P0011, P0021 IVT CONTROL Description PFP:23796 A EBS00QWU SYSTEM DESCRIPTION Sensor Input signal to ECM ECM function Actuator EC Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed and piston position Engine coolant temperature sensor Engine coolant temperature Wheel sensor Vehicle speed*1 Intake valve timing control Intake valve timing control solenoid valve *1: Signal is sent to the ECM through CAN communication line. C D E F G H I PBIB1389E This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve. The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range. J K L CONSULT-II Reference Value in Data Monitor Mode EBS00QWV Specification data are reference values. MONITOR ITEM INT/V TIM (B1) INT/V TIM (B2) INT/V SOL (B1) INT/V SOL (B2) Revision: July 2006 CONDITION ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load SPECIFICATION Idle −5° - 5°CA 2,000 rpm Approx. 0° - 30°CA Idle 0% - 2% 2,000 rpm Approx. 0% - 50% EC-167 2006 Quest M DTC P0011, P0021 IVT CONTROL On Board Diagnosis Logic Trouble diagnosis name DTC No. EBS00QWW Detecting condition P0011 0011 (Bank 1) P0021 0021 (Bank 2) Intake valve timing control performance There is a gap between angle of target and phase-control angle degree. Possible cause ● Crankshaft position sensor (POS) ● Camshaft position sensor (PHASE) ● Intake valve control solenoid valve ● Accumulation of debris to the signal pick-up portion of the camshaft ● Timing chain installation ● Foreign matter cought in the oil groove for intake valve timing control FAIL-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode. Detected items Engine operating condition in fail-safe mode Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function. DTC Confirmation Procedure EBS00QWX NOTE: ● If DTC P0011 or P0021 is displayed with DTC P0075 or P0081, first perform trouble diagnosis for DTC P0075 or P0081. Refer to EC-190, "DTC P0075, P0081 IVT CONTROL SOLENOID VALVE" . ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is between 10V and 16V at idle. WITH CONSULT-II 1. 2. 3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to the normal operating temperature. Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady as possible. ENG SPEED 1,200 - 2,000 rpm COOLAN TEMP/S 60 - 120°C (140 - 248°F) B/FUEL SCHDL More than 3.4 msec Shift lever P or N position 4. 5. 6. PBIB0164E Let engine idle for 10 seconds. If 1st trip DTC is detected, go to EC-170, "Diagnostic Procedure" . If 1st trip DTC is not detected, go to next step. Maintain the following conditions for at least 20 consecutive seconds. ENG SPEED 1,700 - 3,175 rpm (A constant rotation is maintained.) COOLAN TEMP/S 70 - 105°C (158 - 221°F) Shift lever 1st or 2nd position Driving location uphill Driving vehicle uphill (Increased engine load will help maintain the driving conditions required for this test.) 7. If the 1st trip DTC is detected, go to EC-170, "Diagnostic Procedure" . Revision: July 2006 EC-168 2006 Quest DTC P0011, P0021 IVT CONTROL WITH GST A Follow the procedure “WITH CONSULT-II” above. EC C D E F G H I J K L M Revision: July 2006 EC-169 2006 Quest DTC P0011, P0021 IVT CONTROL Diagnostic Procedure EBS00QWY 1. CHECK OIL PRESSURE WARNING LAMP 1. 2. Start engine. Check oil pressure warning lamp and confirm it is not illuminated. OK or NG OK >> GO TO 2. KG >> Go to LU-7, "ENGINE OIL PRESSURE CHECK" . PBIA8559J 2. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE Refer to EC-171, "Component Inspection" . OK or NG OK >> GO TO 3. NG >> Replace intake valve timing control solenoid valve. 3. CHECK CRANKSHAFT POSITION SENSOR (POS) Refer to EC-395, "Component Inspection" . OK or NG OK >> GO TO 4. NG >> Replace crankshaft position sensor (POS). 4. CHECK CAMSHAFT POSITION SENSOR (PHASE) Refer to EC-405, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Replace camshaft position sensor (PHASE). 5. CHECK CAMSHAFT (INTAKE) Check the following. Accumulation of debris to the signal plate of camshaft rear end ● Chipping signal plate of camshaft rear end OK or NG OK >> GO TO 6. NG >> Remove debris and clean the signal plate of camshaft rear end or replace camshaft. ● SEC905C Revision: July 2006 EC-170 2006 Quest DTC P0011, P0021 IVT CONTROL 6. CHECK TIMING CHAIN INSTALLATION A Check service records for any recent repairs that may cause timing chain misaligned. Are there any service records that may cause timing chain misaligned? OK or NG OK >> Check timing chain installation. Refer to EM-56, "TIMING CHAIN" . NG >> GO TO 7. EC C 7. CHECK LUBRICATION CIRCUIT Refer to EM-106, "Inspection After Installation" . OK or NG OK >> GO TO 8. NG >> Clean lubrication line. D E 8. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . For wiring diagram, refer to EC-390 for CKP sensor (POS) and EC-398 for CMP sensor (PHASE). F >> INSPECTION END G Component Inspection EBS00QWZ INTAKE VALVE TIMING CONTROL SOLENOID VALVE 1. 2. H Disconnect intake valve timing control solenoid valve harness connector. Check resistance between intake valve timing control solenoid valve as follows. I 3. Terminal Resistance 1 and 2 7.0 - 7.5Ω at 20°C (68°F) 1 or 2 and ground ∞Ω (Continuity should not exist.) J If NG, replace intake valve timing control solenoid valve. If OK, go to next step. Remove intake valve timing control solenoid valve. K PBIB0193E 4. Provide 12V DC between intake valve timing control solenoid valve terminals and then interrupt it. Make sure that the plunger moves as shown in the figure. CAUTION: Do not apply 12V DC continuously for 5 seconds or more. Doing so may result in damage to the coil in intake valve timing control solenoid valve. If NG, replace intake valve timing control solenoid valve. NOTE: Always replace O-ring when intake valve timing control solenoid valve is removed. Removal and Installation L M PBIB2275E EBS00QX0 INTAKE VALVE TIMING CONTROL SOLENOID VALVE Refer to EM-56, "TIMING CHAIN" . Revision: July 2006 EC-171 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER Description PFP:22693 EBS00QX1 SYSTEM DESCRIPTION Sensor Input Signal to ECM Camshaft position sensor (PHASE) Crankshaft position sensor (POS) Engine speed Mass air flow sensor Amount of intake air ECM function Actuator Air fuel ratio (A/F) sensor 1 heater control Air fuel ratio (A/F) sensor 1 heater The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element at the specified range. CONSULT-II Reference Value in Data Monitor Mode EBS00QX2 Specification data are reference values. MONITOR ITEM A/F S1 HTR (B1) A/F S1 HTR (B2) CONDITION ● SPECIFICATION Engine: After warming up, idle the engine 0 - 100% On Board Diagnosis Logic DTC No. P0031 0031 (Bank 1) P0051 0051 (Bank 2) P0032 0032 (Bank 1) P0052 0052 (Bank 2) Trouble diagnosis name Air fuel ratio (A/F) sensor 1 heater control circuit low Air fuel ratio (A/F) sensor 1 heater control circuit high EBS00QX3 DTC detecting condition Possible cause The current amperage in the air fuel ratio (A/F) sensor 1 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the air fuel ratio (A/F) sensor 1 heater.) ● Harness or connectors (The A/F sensor 1 heater circuit is open or shorted.) ● A/F sensor 1 heater The current amperage in the air fuel ratio (A/F) sensor 1 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the air fuel ratio (A/F) sensor 1 heater.) ● Harness or connectors (The A/F sensor 1 heater circuit is shorted.) ● A/F sensor 1 heater DTC Confirmation Procedure EBS00QX4 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at idle. With CONSULT-II WITH CONSULT-II 1. 2. 3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for at least 10 seconds. If 1st trip DTC is detected, go to EC-177, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-172 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER Wiring Diagram EBS00QX5 A BANK 1 EC C D E F G H I J K L M BBWA2016E Revision: July 2006 EC-173 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed Approximately 2.6V Approximately 2.3V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-174 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER BANK 2 A EC C D E F G H I J K L M BBWA2017E Revision: July 2006 EC-175 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed PBIB1584E 57 58 Approximately 2.6V W/R [Engine is running] LG/R 76 O 77 LG A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed Approximately 2.3V Approximately 3.1V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-176 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER Diagnostic Procedure EBS00QX6 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-177 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER 2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect air fuel ratio (A/F) sensor 1 harness connector (1) (2). BBIA0656E : Vehicle front 2. 3. 3. Intake manifold collector Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB1683E 3. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● 15A fuse ● Harness for open or short between A/F sensor 1 and fuse >> Repair or replace harness or connectors. 4. CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 2 (bank 1) or 24 (bank 2) and A/F sensor 1 terminal 4. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-178 2006 Quest DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER 5. CHECK A/F SENSOR 1 HEATER A Refer to EC-179, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> GO TO 7. EC 6. CHECK INTERMITTENT INCIDENT C Perform EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 7. NG >> Repair or replace. D 7. REPLACE AIR FUEL RATIO (A/F) SENSOR 1 E Replace malfunctioning air fuel ratio (A/F) sensor 1. CAUTION: ● Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. >> INSPECTION END F G H Component Inspection EBS00QX7 AIR FUEL RATIO (A/F) SENSOR 1 HEATER I Check resistance between terminals 3 and 4. Resistance: 2.3 - 4.3Ω at 25°C (77°F) Check continuity between terminals 3 and 1, 2, 5, 6, terminals 4 and 1, 2, 5, 6. J Continuity should not exist. K If NG, replace the A/F sensor 1. CAUTION: ● Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new A/F sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. L M PBIB1684E Removal and Installation EBS00QX8 AIR FUEL RATIO (A/F) SENSOR 1 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . Revision: July 2006 EC-179 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER DTC P0037, P0038, P0057, P0058 HO2S2 HEATER Description PFP:226A0 EBS00QX9 SYSTEM DESCRIPTION Sensor Input signal to ECM ECM function Actuator Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater Camshaft position sensor (PHASE) Crankshaft position sensor (POS) Engine speed Engine coolant temperature sensor Engine coolant temperature Mass air flow sensor Amount of intake air The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature. OPERATION Engine speed rpm Heated oxygen sensor 2 heater Above 3,600 OFF Below 3,600 rpm after the following conditions are met. ● Engine: After warming up ● Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load ON CONSULT-II Reference Value in Data Monitor Mode EBS00QXA Specification data are reference values. MONITOR ITEM HO2S2 HTR (B1) HO2S2 HTR (B2) CONDITION SPECIFICATION ● Engine speed: Above 3,600 rpm ● Engine speed is below 3,600 rpm after the following conditions are met. OFF – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load ON On Board Diagnosis Logic DTC No. P0037 0037 (Bank 1) P0057 0057 (Bank 2) P0038 0038 (Bank 1) P0058 0058 (Bank 2) Trouble diagnosis name Heated oxygen sensor 2 heater control circuit low Heated oxygen sensor 2 heater control circuit high Revision: July 2006 EBS00QXB DTC detecting condition The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater.) The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the heated oxygen sensor 2 heater.) EC-180 Possible cause ● Harness or connectors (The heated oxygen sensor 2 heater circuit is open or shorted.) ● Heater oxygen sensor 2 heater ● Harness or connectors (The heated oxygen sensor 2 heater circuit is shorted.) ● Heater oxygen sensor 2 heater 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER DTC Confirmation Procedure EBS00QXC A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at idle. C WITH CONSULT-II 1. 2. 3. 4. 5. 6. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start the engine and keep the engine speed between 3,500 rpm and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. If 1st trip DTC is detected, go to EC-186, "Diagnostic Procedure" . D E F SEF174Y WITH GST G Follow the procedure “WITH CONSULT-II” above. H I J K L M Revision: July 2006 EC-181 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER Wiring Diagram EBS00QXD BANK 1 BBWA1999E Revision: July 2006 EC-182 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION 25 P Engine speed is below 3,600 rpm after the following conditions are met. – Engine: after warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (bank 1) EC DATA (DC Voltage) C [Engine is running] ● A D 0 - 1.0V E [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) F Engine speed is above 3,600 rpm. [Engine is running] 74 W Heated oxygen sensor 2 (Bank 1) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load G 0 - Approximately 1.0V H [Engine is running] 78 B Heated oxygen sensor 2 ground ● Warm-up condition ● Idle speed I Approximately 0V J K L M Revision: July 2006 EC-183 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER BANK 2 BBWA2000E Revision: July 2006 EC-184 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. EC WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 6 GR A ● Engine speed is below 3,600 rpm after the following conditions are met. – Engine: after warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (bank 2) C 0 - 1.0V D E [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 3,600 rpm. F [Engine is running] 55 W Heated oxygen sensor 2 (Bank 2) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load G 0 - Approximately 1.0V H [Engine is running] 78 B Heated oxygen sensor 2 ground ● Warm-up condition ● Idle speed I Approximately 0V J K L M Revision: July 2006 EC-185 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER Diagnostic Procedure EBS00QXE 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-186 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER 2. CHECK HO2S2 HEATER POWER SUPPLY CIRCUIT 1. A Disconnect heated oxygen sensor 2 harness connector. EC C D E F G H I BBIA0324E 2. 3. J Turn ignition switch ON. Check voltage between HO2S2 terminal 3 and ground with CONSULT-II or tester. K Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. L M PBIB0112E 3. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R connector E122 ● 15A fuse ● Harness for open or short between heated oxygen sensor 2 and fuse >> Repair harness or connectors. Revision: July 2006 EC-187 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER 4. CHECK HO2S2 HEATER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram. Terminals DTC Bank ECM Sensor P0037, P0038 25 2 1 P0057, P0058 6 2 2 Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK HEATED OXYGEN SENSOR 2 HEATER Refer to EC-188, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace malfunctioning heated oxygen sensor 2. 6. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00QXF HEATED OXYGEN SENSOR 2 HEATER 1. Check resistance between HO2S2 terminals as follows. Terminal No. Resistance 2 and 3 5.0 - 7.0 Ω at 25°C (77°F) 1 and 2, 3, 4 ∞Ω (Continuity should not exist) 4 and 1, 2, 3 2. If NG, replace heated oxygen sensor 2. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-4389718 or J-43897-12 and approved anti-seize lubricant. SEF249Y Revision: July 2006 EC-188 2006 Quest DTC P0037, P0038, P0057, P0058 HO2S2 HEATER Removal and Installation EBS00QXG A HEATED OXYGEN SENSOR 2 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . EC C D E F G H I J K L M Revision: July 2006 EC-189 2006 Quest DTC P0075, P0081 IVT CONTROL SOLENOID VALVE DTC P0075, P0081 IVT CONTROL SOLENOID VALVE Component Description PFP:23796 EBS00QXH Intake valve timing control solenoid valve is activated by ON/OFF pulse duty (ratio) signals from the ECM. The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow. The longer pulse width advances valve angle. The shorter pulse width retards valve angle. When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position. PBIB1842E CONSULT-II Reference Value in Data Monitor Mode EBS00QXI Specification data are reference values. MONITOR ITEM INT/V SOL (B1) INT/V SOL (B2) CONDITION ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load SPECIFICATION Idle 0% - 2% 2,000 rpm Approx. 0% - 50% On Board Diagnosis Logic DTC No. P0075 0075 (Bank 1) P0081 0081 (Bank 2) Trouble diagnosis name Intake valve timing control solenoid valve circuit EBS00QXJ DTC detecting condition An improper voltage is sent to the ECM through intake valve timing control solenoid valve. DTC Confirmation Procedure Possible cause ● Harness or connectors (Intake valve timing control solenoid valve circuit is open or shorted.) ● Intake valve timing control solenoid valve EBS00QXK NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 5 seconds. If 1st trip DTC is detected, go to EC-195, "Diagnostic Procedure" . SEF058Y WITH GST Following the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-190 2006 Quest DTC P0075, P0081 IVT CONTROL SOLENOID VALVE Wiring Diagram EBS00QXL A BANK 1 EC C D E F G H I J K L M BBWA1625E Revision: July 2006 EC-191 2006 Quest DTC P0075, P0081 IVT CONTROL SOLENOID VALVE Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] ● Warm-up condition ● Idle speed BATTERY VOLTAGE (11 - 14V) 7 - 12V 11 R/L Intake valve timing control solenoid valve (Bank 1) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. PBIB1790E [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-192 2006 Quest DTC P0075, P0081 IVT CONTROL SOLENOID VALVE BANK 2 A EC C D E F G H I J K L M BBWA1626E Revision: July 2006 EC-193 2006 Quest DTC P0075, P0081 IVT CONTROL SOLENOID VALVE Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] ● Warm-up condition ● Idle speed BATTERY VOLTAGE (11 - 14V) 7 - 12V 10 Y/L Intake valve timing control solenoid valve (Bank 2) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. PBIB1790E [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-194 2006 Quest DTC P0075, P0081 IVT CONTROL SOLENOID VALVE Diagnostic Procedure EBS00QXM 1. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT 1. 2. A Turn ignition switch OFF. Disconnect intake valve timing control solenoid valve harness connector. EC C D E BBIA0065E 3. 4. Turn ignition switch ON. Check voltage between intake valve timing control solenoid valve terminal 2 and ground with CONSULT-II or tester. F Voltage: Battery voltage G OK or NG OK >> GO TO 3. NG >> GO TO 2. H I PBIB0192E 2. DETECT MALFUNCTIONING PART J Check the following. ● Harness connectors E5, F14 ● Harness connectors F44, F101 (bank 1) ● Harness for open or short between intake valve timing control solenoid valve and IPDM E/R ● Harness for open or short between intake valve timing control solenoid valve and ECM K L >> Repair harness or connectors. 3. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 11 (bank 1) or 10 (bank 2) and intake valve timing control solenoid valve terminal 1. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. Revision: July 2006 EC-195 2006 Quest M DTC P0075, P0081 IVT CONTROL SOLENOID VALVE 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F44, F101 (bank 1) ● Harness for open and short between intake valve timing control solenoid valve and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE Refer to EC-196, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace intake valve timing control solenoid valve. 6. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00QXN INTAKE VALVE TIMING CONTROL SOLENOID VALVE 1. 2. 3. 4. Disconnect intake valve timing control solenoid valve harness connector. Check resistance between intake valve timing control solenoid valve terminals as follows. Terminals Resistance 1 and 2 7.0 - 7.5Ω at 20°C (68°F) 1 or 2 and ground ∞Ω (Continuity should not exist) If NG, replace intake valve timing control solenoid valve. If OK, go to next step. Remove intake valve timing control solenoid valve. PBIB0193E Provide 12V DC between intake valve timing control solenoid valve terminals and then interrupt it. Make sure that the plunger moves as shown in the figure. CAUTION: Do not apply 12V DC continuously for 5 seconds or more. Doing so may result in damage to the coil in intake valve timing control solenoid valve. If NG, replace intake valve timing control solenoid valve. NOTE: Always replace O-ring when intake valve timing control solenoid valve is removed. PBIB2275E Removal and Installation EBS00QXO INTAKE VALVE TIMING CONTROL SOLENOID VALVE Refer to EM-56, "TIMING CHAIN" . Revision: July 2006 EC-196 2006 Quest DTC P0101 MAF SENSOR DTC P0101 MAF SENSOR Component Description PFP:22680 A EBS00QXP The mass air flow sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. The mass air flow sensor controls the temperature of the hot wire to a certain amount. The heat generated by the hot wire is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the electric current supplied to hot wire is changed to maintain the temperature of the hot wire as air flow increases. The ECM detects the air flow by means of this current change. EC C D PBIB1604E E CONSULT-II Reference Value in Data Monitor Mode EBS00QXQ Specification data are reference values. MONITOR ITEM MAS A/F SE-B1 CAL/LD VALUE MASS AIRFLOW CONDITION ● See EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load Idle 5% - 35% 2,500 rpm 5% - 35% Idle 2.0 - 6.0 g·m/s 2,500 rpm 7.0 - 20.0 g·m/s G H I On Board Diagnosis Logic DTC No. Trouble diagnosis name EBS00QXR J DTC detecting condition Possible cause ● A) P0101 0101 A high voltage from the sensor is sent to ECM under light load driving condition. Mass air flow sensor circuit range/performance B) Revision: July 2006 F SPECIFICATION A low voltage from the sensor is sent to ECM under heavy load driving condition. EC-197 Harness or connectors (The sensor circuit is open or shorted.) ● Mass air flow sensor ● EVAP control system pressure sensor ● Intake air temperature sensor ● Harness or connectors (The sensor circuit is open or shorted.) ● Intake air leaks ● Mass air flow sensor ● EVAP control system pressure sensor ● Intake air temperature sensor 2006 Quest K L M DTC P0101 MAF SENSOR DTC Confirmation Procedure EBS00QXS Perform PROCEDURE FOR MALFUNCTION A first. If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. PROCEDURE FOR MALFUNCTION A NOTE: If engine will not start or stops soon, wait at least 10 seconds with engine stopped (Ignition switch ON) instead of running engine at idle speed. With CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to normal operating temperature. Run engine for at least 10 seconds at idle speed. If 1st trip DTC is detected, go to EC-201, "Diagnostic Procedure" . SEF174Y With GST Follow the procedure “With CONSULT-II” above. PROCEDURE FOR MALFUNCTION B CAUTION: Always drive vehicle at a safe speed. With CONSULT-II 1. 2. 3. 4. 5. 6. Turn ignition switch ON. Start engine and warm it up to normal operating temperature. If engine cannot be started, go to EC-201, "Diagnostic Procedure" . Select “DATA MONITOR” mode with CONSULT-II. Check the voltage of “MAS A/F SE-B1” with “DATA MONITOR”. Increases engine speed to about 4,000 rpm. Monitor the linear voltage rise in response to engine speed increases. If NG, go to EC-201, "Diagnostic Procedure" . If OK, go to following step. SEF243Y Revision: July 2006 EC-198 2006 Quest DTC P0101 MAF SENSOR 7. Maintain the following conditions for at least 10 consecutive seconds. ENG SPEED More than 2,000 rpm THRTL SEN 1 More than 3V THRTL SEN 2 More than 3V Shift lever Suitable position Driving location Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test. 8. A EC If 1st trip DTC is detected, go to EC-201, "Diagnostic Procedure" . Overall Function Check C PBIB0199E D EBS00QXT PROCEDURE FOR MALFUNCTION B E Use this procedure to check the overall function of the mass air flow sensor circuit. During this check, a DTC might not be confirmed. With GST 1. 2. 3. 4. 5. F Start engine and warm it up to normal operating temperature. Select “Service $01” with GST. Check the mass air flow sensor signal with “Service $01”. Check for linear mass air flow sensor signal value rise in response to increases to about 4,000 rpm in engine speed. If NG, go to EC-201, "Diagnostic Procedure" . G H I SEF534P J K L M Revision: July 2006 EC-199 2006 Quest DTC P0101 MAF SENSOR Wiring Diagram EBS00QXU BBWA1602E Revision: July 2006 EC-200 2006 Quest DTC P0101 MAF SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. EC WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 51 W/L Mass air flow sensor ● Warm-up condition ● Idle speed C 1.0 - 1.3V D [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm. 1.6 - 2.0V E [Engine is running] 67 B Sensor ground ● Warm-up condition ● Idle speed [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G A Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] Approximately 0V F 0 - 1.5V G BATTERY VOLTAGE (11 - 14V) H BATTERY VOLTAGE (11 - 14V) I Diagnostic Procedure EBS00QXV 1. INSPECTION START J Which malfunction (A or B) is duplicated? A or B A >> GO TO 3. B >> GO TO 2. K 2. CHECK INTAKE SYSTEM L Check the following for connection. ● Air duct ● Vacuum hoses ● Intake air passage between air duct and intake manifold OK or NG OK >> GO TO 3. NG >> Reconnect the parts. Revision: July 2006 EC-201 M 2006 Quest DTC P0101 MAF SENSOR 3. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 4. NG >> Repair or replace ground connections. Revision: July 2006 EC-202 2006 Quest DTC P0101 MAF SENSOR 4. CHECK MAF SENSOR POWER SUPPLY CIRCUIT 1. 2. A Disconnect mass air flow (MAF) sensor harness connector. Turn ignition switch ON. EC C D BBIA0327E 3. Check voltage between MAF sensor terminal 5 and ground with CONSULT-II or tester. E Voltage: Battery voltage F OK or NG OK >> GO TO 6. NG >> GO TO 5. G PBIB1597E H 5. DETECT MALFUNCTIONING PART I Check the following. ● Harness connectors E5, F14 ● Harness for open or short between IPDM E/R and mass air flow sensor ● Harness for open or short between mass air flow sensor and ECM J >> Repair harness or connectors. K 6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between MAF sensor terminal 4 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> GO TO 7. Revision: July 2006 EC-203 2006 Quest L M DTC P0101 MAF SENSOR 7. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E19, F33 ● Harness for open or short between mass air flow sensor and ECM ● Harness for open or short between mass air flow sensor and TCM >> Repair open circuit or short to ground or short to power in harness or connectors. 8. CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between MAF sensor terminal 3 and ECM terminal 51. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK INTAKE AIR TEMPERATURE SENSOR Refer to EC-220, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace intake air temperature sensor. 10. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-478, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> Replace EVAP control system pressure sensor. 11. CHECK MASS AIR FLOW SENSOR Refer to EC-205, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> Replace mass air flow sensor. 12. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-204 2006 Quest DTC P0101 MAF SENSOR Component Inspection EBS00QXW A MASS AIR FLOW SENSOR With CONSULT-II 1. 2. 3. 4. Reconnect all harness connectors disconnected. Start engine and warm it up to normal operating temperature. Connect CONSULT-II and select “DATA MONITOR” mode. Select “MAS A/F SE-B1” and check indication under the following conditions. Condition C MAS A/F SE-B1 (V) Ignition switch ON (Engine stopped.) Approx. 0.4 Idle (Engine is warmed-up to normal operating temperature.) 1.0 - 1.3 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.6 - 2.0 Idle to about 4,000 rpm* EC D E 1.0 - 1.3 to Approx. 2.4 PBIB2371E *: Check for linear voltage rise in response to engine being increased to about 4,000 rpm. 5. a. b. 6. 7. 8. 9. If the voltage is out of specification, proceed the following. Check for the cause of uneven air flow through mass air flow sensor. Refer to following. ● Crushed air ducts ● Malfunctioning seal of air cleaner element ● Uneven dirt of air cleaner element ● Improper specification of intake air system parts If NG, repair or replace malfunctioning part and perform step 2 to 4 again. If OK, go to next step. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector and reconnect it again. Perform step 2 to 4 again. If NG, clean or replace mass air flow sensor. G H I J K Without CONSULT-II 1. 2. 3. Reconnect all harness connectors disconnected. Start engine and warm it up to normal operating temperature. Check voltage between ECM terminal 51 (Mass air flow sensor signal) and ground. Condition L M Voltage V Ignition switch ON (Engine stopped.) Approx. 0.4 Idle (Engine is warmed-up to normal operating temperature.) 1.0 - 1.3 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.6 - 2.0 Idle to about 4,000 rpm* 1.0 - 1.3 to Approx. 2.4 PBIB1106E *: Check for linear voltage rise in response to engine being increased to about 4,000 rpm. 4. a. If the voltage is out of specification, proceed the following. Check for the cause of uneven air flow through mass air flow sensor. Refer to following. ● Crushed air ducts ● Malfunctioning seal of air cleaner element ● Uneven dirt of air cleaner element ● Improper specification of intake air system parts Revision: July 2006 F EC-205 2006 Quest DTC P0101 MAF SENSOR b. 5. 6. 7. 8. If NG, repair or replace malfunctioning part and perform step 2 to 3 again. If OK, go to next step. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector and reconnect it again. Perform step 2 and 3 again. If NG, clean or replace mass air flow sensor. Removal and Installation EBS00QXX MASS AIR FLOW SENSOR Refer to EM-15, "AIR CLEANER AND AIR DUCT" . Revision: July 2006 EC-206 2006 Quest DTC P0102, P0103 MAF SENSOR DTC P0102, P0103 MAF SENSOR Component Description PFP:22680 A EBS00QXY The mass air flow sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the ECM. The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change. EC C D PBIB1604E E CONSULT-II Reference Value in Data Monitor Mode EBS00QXZ Specification data are reference values. MONITOR ITEM MAS A/F SE-B1 CAL/LD VALUE MASS AIRFLOW CONDITION F SPECIFICATION ● See EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load Idle 5% - 35% 2,500 rpm 5% - 35% Idle 2.0 - 6.0 g·m/s 2,500 rpm 7.0 - 20.0 g·m/s G H I On Board Diagnosis Logic EBS00QY0 J These self-diagnoses have the one trip detection logic. DTC No. P0102 0102 P0103 0103 Trouble diagnosis name DTC detecting condition Mass air flow sensor circuit low input An excessively low voltage from the sensor is sent to ECM. Mass air flow sensor circuit high input An excessively high voltage from the sensor is sent to ECM. Possible cause ● Harness or connectors (The sensor circuit is open or shorted.) ● Intake air leaks ● Mass air flow sensor ● Harness or connectors (The sensor circuit is open or shorted.) ● Mass air flow sensor L M FAIL-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up. Detected items Mass air flow sensor circuit Revision: July 2006 Engine operating condition in fail-safe mode Engine speed will not rise more than 2,400 rpm due to the fuel cut. EC-207 K 2006 Quest DTC P0102, P0103 MAF SENSOR DTC Confirmation Procedure EBS00QY1 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. PROCEDURE FOR DTC P0102 With CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and wait at least 5 seconds. If DTC is detected, go to EC-210, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. PROCEDURE FOR DTC P0103 With CONSULT-II 1. 2. 3. 4. 5. 6. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Wait at least 5 seconds. If DTC is detected, go to EC-210, "Diagnostic Procedure" . If DTC is not detected, go to next step. Start engine and wait at least 5 seconds. If DTC is detected, go to EC-210, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. Revision: July 2006 EC-208 2006 Quest DTC P0102, P0103 MAF SENSOR Wiring Diagram EBS00QY2 A EC C D E F G H I J K L M BBWA1602E Revision: July 2006 EC-209 2006 Quest DTC P0102, P0103 MAF SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 51 W/L Mass air flow sensor ● Warm-up condition ● Idle speed 1.0 - 1.3V [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm. 1.6 - 2.0V [Engine is running] 67 B Sensor ground ● Warm-up condition ● Idle speed [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] Diagnostic Procedure Approximately 0V 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) EBS00QY3 1. INSPECTION START Which malfunction (P0102 or P0103) is duplicated? P0102 or P0103 P0102 >> GO TO 3. P0103 >> GO TO 2. 2. CHECK INTAKE SYSTEM Check the following for connection. Air duct ● Vacuum hoses ● Intake air passage between air duct and intake manifold OK or NG OK >> GO TO 3. NG >> Reconnect the parts. ● Revision: July 2006 EC-210 2006 Quest DTC P0102, P0103 MAF SENSOR 3. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I BBIA0637E OK or NG OK >> GO TO 4. NG >> Repair or replace ground connections. J K L M Revision: July 2006 EC-211 2006 Quest DTC P0102, P0103 MAF SENSOR 4. CHECK MAF SENSOR POWER SUPPLY CIRCUIT 1. 2. Disconnect mass air flow (MAF) sensor harness connector. Turn ignition switch ON. BBIA0327E 3. Check voltage between MAF sensor terminal 5 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 6. NG >> GO TO 5. PBIB1597E 5. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 ● Harness for open or short between IPDM E/R and mass air flow sensor ● Harness for open or short between mass air flow sensor and ECM ● >> Repair harness or connectors. 6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between MAF sensor terminal 4 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> GO TO 7. Revision: July 2006 EC-212 2006 Quest DTC P0102, P0103 MAF SENSOR 7. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors E19, F33 ● Harness for open or short between mass air flow sensor and ECM ● Harness for open or short between mass air flow sensor and TCM EC C >> Repair open circuit or short to ground or short to power in harness or connectors. 8. CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. D Check harness continuity between MAF sensor terminal 3 and ECM terminal 51. Refer to Wiring Diagram. E Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. F 9. CHECK MASS AIR FLOW SENSOR G Refer to EC-214, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace mass air flow sensor. H I 10. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . J >> INSPECTION END K L M Revision: July 2006 EC-213 2006 Quest DTC P0102, P0103 MAF SENSOR Component Inspection EBS00QY4 MASS AIR FLOW SENSOR With CONSULT-II 1. 2. 3. 4. Reconnect all harness connectors disconnected. Start engine and warm it up to normal operating temperature. Connect CONSULT-II and select “DATA MONITOR” mode. Select “MAS A/F SE-B1” and check indication under the following conditions. Condition MAS A/F SE-B1 (V) Ignition switch ON (Engine stopped.) Approx. 0.4 Idle (Engine is warmed-up to normal operating temperature.) 1.0 - 1.3 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.6 - 2.0 Idle to about 4,000 rpm 1.0 - 1.3 to Approx. 2.4* PBIB2371E *: Check for linear voltage rise in response to engine being increased to about 4,000 rpm. 5. a. b. 6. 7. 8. 9. If the voltage is out of specification, proceed the following. Check for the cause of uneven air flow through mass air flow sensor. Refer to following. ● Crushed air ducts ● Malfunctioning seal of air cleaner element ● Uneven dirt of air cleaner element ● Improper specification of intake air system parts If NG, repair or replace malfunctioning part and perform step 2 to 4 again. If OK, go to next step. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector and reconnect it again. Perform step 2 to 4 again. If NG, clean or replace mass air flow sensor. Without CONSULT-II 1. 2. 3. Reconnect all harness connectors disconnected. Start engine and warm it up to normal operating temperature. Check voltage between ECM terminal 51 (Mass air flow sensor signal) and ground. Condition Voltage V Ignition switch ON (Engine stopped.) Approx. 0.4 Idle (Engine is warmed-up to normal operating temperature.) 1.0 - 1.3 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.6 - 2.0 Idle to about 4,000 rpm 1.0 - 1.3 to Approx. 2.4* PBIB1106E *: Check for linear voltage rise in response to engine being increased to about 4,000 rpm. 4. a. If the voltage is out of specification, proceed the following. Check for the cause of uneven air flow through mass air flow sensor. Refer to following. ● Crushed air ducts ● Malfunctioning seal of air cleaner element ● Uneven dirt of air cleaner element ● Improper specification of intake air system parts Revision: July 2006 EC-214 2006 Quest DTC P0102, P0103 MAF SENSOR b. 5. 6. 7. 8. If NG, repair or replace malfunctioning part and perform step 2 to 3 again. If OK, go to next step. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector and reconnect it again. Perform step 2 and 3 again. If NG, clean or replace mass air flow sensor. Removal and Installation A EC EBS00QY5 MASS AIR FLOW SENSOR C Refer toEM-15, "AIR CLEANER AND AIR DUCT" . D E F G H I J K L M Revision: July 2006 EC-215 2006 Quest DTC P0112, P0113 IAT SENSOR DTC P0112, P0113 IAT SENSOR Component Description PFP:22630 EBS00QY6 The intake air temperature sensor is built-into mass air flow sensor. The sensor detects intake air temperature and transmits a signal to the ECM. The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. PBIB1604E Intake air temperature °C (°F) Voltage* V Resistance kΩ 25 (77) 3.32 1.800 - 2.200 80 (176) 1.23 0.283 - 0.359 *: This data is reference value and is measured between ECM terminal 34 (Intake air temperature sensor) and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. SEF012P On Board Diagnosis Logic DTC No. EBS00QY7 Trouble diagnosis name DTC detecting condition P0112 0112 Intake air temperature sensor circuit low input An excessively low voltage from the sensor is sent to ECM. ● Harness or connectors (The sensor circuit is open or shorted.) P0113 0113 Intake air temperature sensor circuit high input An excessively high voltage from the sensor is sent to ECM. ● Intake air temperature sensor DTC Confirmation Procedure Possible cause EBS00QY8 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Wait at least 5 seconds. If 1st trip DTC is detected, go to EC-218, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-216 2006 Quest DTC P0112, P0113 IAT SENSOR Wiring Diagram EBS00QY9 A EC C D E F G H I J K L M BBWA1654E Revision: July 2006 EC-217 2006 Quest DTC P0112, P0113 IAT SENSOR Diagnostic Procedure EBS00QYA 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-218 2006 Quest DTC P0112, P0113 IAT SENSOR 2. CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT 1. 2. A Disconnect mass air flow sensor (intake air temperature sensor is built-into) harness connector. Turn ignition switch ON. EC C D BBIA0327E 3. Check voltage between mass air flow sensor terminal 2 and ground. E Voltage: Approximately 5V F OK or NG OK >> GO TO 3. NG >> Repair harness or connectors. G PBIB1598E H 3. CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between mass air flow sensor terminal 1 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. I J K Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. L M 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E19, F33 ● Harness for open or short between intake air temperature sensor and ECM ● Harness for open or short between intake air temperature sensor and TCM >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK INTAKE AIR TEMPERATURE SENSOR Refer to EC-220, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace mass air flow sensor (with intake air temperature sensor). Revision: July 2006 EC-219 2006 Quest DTC P0112, P0113 IAT SENSOR 6. CHECK INTERMITTENT INCIDENT Refer toEC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00QYB INTAKE AIR TEMPERATURE SENSOR 1. 2. Check resistance between mass air flow sensor terminals 1 and 2 under the following conditions. Intake air temperature °C (°F) Resistance kΩ 25 (77) 1.800 - 2.200 If NG, replace mass air flow sensor (with intake air temperature sensor). PBIB1604E SEF012P Removal and Installation EBS00QYC MASS AIR FLOW SENSOR Refer to EM-15, "AIR CLEANER AND AIR DUCT" . Revision: July 2006 EC-220 2006 Quest DTC P0117, P0118 ECT SENSOR DTC P0117, P0118 ECT SENSOR Component Description PFP:22630 A EBS00QYD The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases. EC C D SEF594K E Engine coolant temperature °C (°F) Voltage* V Resistance F kΩ −10 (14) 4.4 7.0 - 11.4 20 (68) 3.5 2.1 - 2.9 50 (122) 2.2 0.68 - 1.00 90 (194) 0.9 0.236 - 0.260 G H *: This data is reference value and is measured between ECM terminal 73 (Engine coolant temperature sensor) and ground. SEF012P CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. On Board Diagnosis Logic EBS00QYE I J These self-diagnoses have the one trip detection logic. DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause P0117 0117 Engine coolant temperature sensor circuit low input An excessively low voltage from the sensor is sent to ECM. ● Harness or connectors (The sensor circuit is open or shorted.) P0118 0118 Engine coolant temperature sensor circuit high input An excessively high voltage from the sensor is sent to ECM. ● Engine coolant temperature sensor K L FAIL-SAFE MODE M When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up. Detected items Engine operating condition in fail-safe mode Engine coolant temperature will be determined by ECM based on the time after turning ignition switch ON or START. CONSULT-II displays the engine coolant temperature decided by ECM. Engine coolant temperature decided (CONSULT-II display) Condition Engine coolant temperature sensor circuit Just as ignition switch is turned ON or START 40°C (104°F) More than approx. 4 minutes after ignition ON or START 80°C (176°F) 40 - 80°C (104 - 176°F) (Depends on the time) Except as shown above When the fail-safe system for engine coolant temperature sensor is activated, the cooling fan operates while engine is running. Revision: July 2006 EC-221 2006 Quest DTC P0117, P0118 ECT SENSOR DTC Confirmation Procedure EBS00QYF NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Wait at least 5 seconds. If DTC is detected, go to EC-224, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-222 2006 Quest DTC P0117, P0118 ECT SENSOR Wiring Diagram EBS00QYG A EC C D E F G H I J K L M BBWA1603E Revision: July 2006 EC-223 2006 Quest DTC P0117, P0118 ECT SENSOR Diagnostic Procedure EBS00QYH 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-224 2006 Quest DTC P0117, P0118 ECT SENSOR 2. CHECK ECT SENSOR POWER SUPPLY CIRCUIT 1. 2. A Disconnect engine coolant temperature (ECT) sensor harness connector. Turn ignition switch ON. EC C D BBIA0323E 3. E Check voltage between ECT sensor terminal 1 and ground with CONSULT-II or tester. Voltage: Approximately 5V F OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. G PBIB0080E 3. 1. 2. 3. 4. H CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between ECT sensor terminal 2 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. I J K Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. L 4. DETECT MALFUNCTIONING PART M Check the following. ● Harness connectors E19, F33 ● Harness for open and short between ECT sensor and ECM ● Harness for open and short between ECT sensor and TCM >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK ENGINE COOLANT TEMPERATURE SENSOR Refer to EC-226, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace engine coolant temperature sensor. Revision: July 2006 EC-225 2006 Quest DTC P0117, P0118 ECT SENSOR 6. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00QYI ENGINE COOLANT TEMPERATURE SENSOR 1. Check resistance between engine coolant temperature sensor terminals 1 and 2 as shown in the figure. PBIB2005E Engine coolant temperature 2. °C (°F) Resistance kΩ 20 (68) 2.1 - 2.9 50 (122) 0.68 - 1.00 90 (194) 0.236 - 0.260 If NG, replace engine coolant temperature sensor. SEF012P Removal and Installation EBS00QYJ ENGINE COOLANT TEMPERATURE SENSOR Refer to CO-22, "THERMOSTAT AND THERMOSTAT HOUSING" . Revision: July 2006 EC-226 2006 Quest DTC P0122, P0123 TP SENSOR DTC P0122, P0123 TP SENSOR Component Description PFP:16119 A EBS00QYK Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition. EC C D PBIB0145E E CONSULT-II Reference Value in Data Monitor Mode EBS00QYL Specification data are reference values. MONITOR ITEM THRTL SEN 1 THRTL SEN 2* CONDITION F SPECIFICATION ● Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released More than 0.36V ● Shift lever: D Accelerator pedal: Fully depressed Less than 4.75V G *: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal. On Board Diagnosis Logic EBS00QYM H These self-diagnoses have the one trip detection logic. DTC No. P0122 0122 P0123 0123 Trouble diagnosis name Throttle position sensor 2 circuit low input Throttle position sensor 2 circuit high input Possible cause I ● Harness or connectors (TP sensor 2 circuit is open or shorted.) (APP sensor 2 circuit is shorted.) J ● Electric throttle control actuator (TP sensor 2) Accelerator pedal position sensor. (APP sensor 2) K DTC detecting condition An excessively low voltage from the TP sensor 2 is sent to ECM. An excessively high voltage from the TP sensor 2 is sent to ECM. FAIL-SAFE MODE L When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. Engine operation condition in fail-safe mode The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. Revision: July 2006 EC-227 2006 Quest M DTC P0122, P0123 TP SENSOR DTC Confirmation Procedure EBS00QYN NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 1 second. If DTC is detected, go to EC-231, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-228 2006 Quest DTC P0122, P0123 TP SENSOR Wiring Diagram EBS00QYO A EC C D E F G H I J K L M BBWA1604E Revision: July 2006 EC-229 2006 Quest DTC P0122, P0123 TP SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 47 WIRE COLOR R ITEM Throttle position sensor power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) Approximately 5V [Ignition switch: ON] 50 Y ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released Throttle position sensor 1 More than 0.36V [Ignition switch: ON] ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed Less than 4.75V [Engine is running] 66 G Throttle position sensor ground ● Warm-up condition ● Idle speed Approximately 0V [Ignition switch: ON] 69 L ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released Throttle position sensor 2 Less than 4.75V [Ignition switch: ON] 91 O APP sensor 2 power supply Revision: July 2006 ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed [Ignition switch: ON] EC-230 More than 0.36V Approximately 5V 2006 Quest DTC P0122, P0123 TP SENSOR Diagnostic Procedure EBS00QYP 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-231 2006 Quest DTC P0122, P0123 TP SENSOR 2. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT 1. 2. Disconnect electric throttle control actuator harness connector. Turn ignition switch ON. BBIA0318E 3. Check voltage between electric throttle control actuator terminal 1 and ground with CONSULT-II or tester. Voltage: Approximately 5V OK or NG OK >> GO TO 7. NG >> GO TO 3. PBIB0082E 3. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT-II 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between electric throttle control actuator terminal 1 and ECM terminal 47. Refer to Wiring Diagram. Continuity should exist. OK or NG OK >> GO TO 4. NG >> Repair open circuit. 4. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT-III Check harness for short to power and short to ground, between the following terminals. ECM terminal Sensor terminal Reference Wiring Diagram 47 Electric throttle control actuator terminal 1 EC-229 91 APP sensor terminal 6 EC-634 OK or NG OK >> GO TO 5. NG >> Repair short to ground or short to power in harness or connectors. 5. CHECK APP SENSOR Refer to EC-639, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 6. Revision: July 2006 EC-232 2006 Quest DTC P0122, P0123 TP SENSOR 6. REPLACE ACCELERATOR PEDAL ASSEMBLY 1. 2. 3. 4. A Replace accelerator pedal assembly. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . EC C >> INSPECTION END 7. CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. D Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 66 and electric throttle control actuator terminal 5. Refer to Wiring Diagram. Continuity should exist. F 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> Repair open circuit or short to ground or short to power in harness or connectors. G 8. CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. H Check harness continuity between ECM terminal 69 and electric throttle control actuator terminal 2. Refer to Wiring Diagram. I Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. J K 9. CHECK THROTTLE POSITION SENSOR Refer to EC-234, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 10. L M 10. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. E Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 11. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-233 2006 Quest DTC P0122, P0123 TP SENSOR Component Inspection EBS00QYQ THROTTLE POSITION SENSOR 1. 2. 3. 4. 5. Reconnect all harness connectors disconnected. Perform EC-82, "Throttle Valve Closed Position Learning" . Turn ignition switch ON. Set shift lever to D position. Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions. Terminal Accelerator pedal Voltage 50 (Throttle position sensor 1) Fully released More than 0.36V Fully depressed Less than 4.75V Fully released Less than 4.75V Fully depressed More than 0.36V 69 (Throttle position sensor 2) 6. 7. 8. If NG, replace electric throttle control actuator and go to the next step. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . Removal and Installation PBIB1608E EBS00QYR ELECTRIC THROTTLE CONTROL ACTUATOR Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . Revision: July 2006 EC-234 2006 Quest DTC P0125 ECT SENSOR DTC P0125 ECT SENSOR Component Description PFP:22630 A EBS00QYS NOTE: If DTC P0125 is displayed with P0117 or P0118, first perform the trouble diagnosis for DTC P0117 or EC P0118. Refer to EC-221, "DTC P0117, P0118 ECT SENSOR" . The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the C ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases. D E SEF594K F Engine coolant temperature °C (°F) Voltage* V −10 (14) 4.4 7.0 - 11.4 20 (68) 3.5 2.1 - 2.9 50 (122) 2.2 0.68 - 1.00 90 (194) 0.9 0.236 - 0.260 Resistance kΩ G H *: This data is reference value and is measured between ECM terminal 73 (Engine coolant temperature sensor) and ground. I SEF012P CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. On Board Diagnosis Logic DTC No. Trouble diagnosis name P0125 0125 Insufficient engine coolant temperature for closed loop fuel control Revision: July 2006 EBS00QYT K DTC detecting condition ● ● J Voltage sent to ECM from the sensor is not practical, even when some time has passed after starting the engine. Engine coolant temperature is insufficient for closed loop fuel control. EC-235 Possible cause ● Harness or connectors (High resistance in the circuit) ● Engine coolant temperature sensor ● Thermostat L M 2006 Quest DTC P0125 ECT SENSOR DTC Confirmation Procedure EBS00QYU CAUTION: Be careful not to overheat engine. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Check that “COOLAN TEMP/S” is above 10°C (50°F). If it is above 10°C (50°F), the test result will be OK. If it is below 10°C (50°F), go to following step. Start engine and run it for 65 minutes at idle speed. If “COOLAN TEMP/S” increases to more than 10°C (50°F) within 65 minutes, stop engine because the test result will be OK. If 1st trip DTC is detected, go to EC-237, "Diagnostic Procedure" . SEF174Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-236 2006 Quest DTC P0125 ECT SENSOR Diagnostic Procedure EBS00QYV 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K 2. CHECK ENGINE COOLANT TEMPERATURE SENSOR L Refer to EC-238, "Component Inspection" . OK or NG OK >> GO TO 3. NG >> Replace engine coolant temperature sensor. M 3. CHECK THERMOSTAT OPERATION When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm the engine coolant does not flow. OK or NG OK >> GO TO 4. NG >> Repair or replace thermostat. Refer to CO-22, "THERMOSTAT AND THERMOSTAT HOUSING" . 4. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . Refer to EC-223, "Wiring Diagram" . >> INSPECTION END Revision: July 2006 EC-237 2006 Quest DTC P0125 ECT SENSOR Component Inspection EBS00QYW ENGINE COOLANT TEMPERATURE SENSOR 1. Check resistance between engine coolant temperature sensor terminals 1 and 2 as shown in the figure. PBIB2005E Engine coolant temperature 2. °C (°F) Resistance kΩ 20 (68) 2.1 - 2.9 50 (122) 0.68 - 1.00 90 (194) 0.236 - 0.260 If NG, replace engine coolant temperature sensor. SEF012P Removal and Installation EBS00QYX ENGINE COOLANT TEMPERATURE SENSOR Refer to CO-22, "THERMOSTAT AND THERMOSTAT HOUSING" . Revision: July 2006 EC-238 2006 Quest DTC P0127 IAT SENSOR DTC P0127 IAT SENSOR Component Description PFP:22630 A EBS00QYY The intake air temperature sensor is built into mass air flow sensor. The sensor detects intake air temperature and transmits a signal to the ECM. The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. EC C D PBIB1604E E Intake air temperature °C (°F) Voltage* V Resistance F kΩ 25 (77) 3.32 1.800 - 2.200 80 (176) 1.23 0.283 - 0.359 G *: This data is reference value and is measured between ECM terminal 34 (Intake air temperature sensor) and ground. H CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. SEF012P I On Board Diagnosis Logic DTC No. P0127 0127 Trouble diagnosis name Intake air temperature too high EBS00QYZ DTC detecting condition Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signal from engine coolant temperature sensor. DTC Confirmation Procedure J Possible cause ● Harness or connectors (The sensor circuit is open or shorted) ● Intake air temperature sensor K EBS00QZ0 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. CAUTION: Always drive vehicle at a safe speed. TESTING CONDITION: This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle. WITH CONSULT-II 1. a. Wait until engine coolant temperature is less than 90°C (194°F) Turn ignition switch ON. Revision: July 2006 EC-239 2006 Quest L M DTC P0127 IAT SENSOR b. c. d. 2. 3. 4. 5. 6. Select “DATA MONITOR” mode with CONSULT-II. Check the engine coolant temperature. If the engine coolant temperature is not less than 90°C (194°F), turn ignition switch OFF and cool down engine. ● Perform the following steps before engine coolant temperature is above 90°C (194°F). Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine. Hold vehicle speed at more than 70 km/h (43 MPH) for 100 consecutive seconds. If 1st trip DTC is detected, go to EC-240, "Diagnostic Procedure" . SEF189Y WITH GST Follow the procedure “WITH CONSULT-II” above. Diagnostic Procedure EBS00QZ1 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-240 2006 Quest DTC P0127 IAT SENSOR 2. CHECK INTAKE AIR TEMPERATURE SENSOR A Refer to EC-241, "Component Inspection" . OK or NG OK >> GO TO 3. NG >> Replace mass air flow sensor (with intake air temperature sensor). EC 3. CHECK INTERMITTENT INCIDENT C Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . Refer to EC-217, "Wiring Diagram" . D >> INSPECTION END Component Inspection EBS00QZ2 E INTAKE AIR TEMPERATURE SENSOR 1. 2. Check resistance between intake air temperature sensor terminals 5 and 6 under the following conditions. Intake air temperature °C (°F) Resistance kΩ 25 (77) 1.800 - 2.200 F G If NG, replace mass air flow sensor (with intake air temperature sensor). H PBIB1604E I J K L SEF012P Removal and Installation EBS00QZ3 MASS AIR FLOW SENSOR Refer to EM-15, "AIR CLEANER AND AIR DUCT" . Revision: July 2006 EC-241 2006 Quest M DTC P0128 THERMOSTAT FUNCTION DTC P0128 THERMOSTAT FUNCTION On Board Diagnosis Logic PFP:21200 EBS00QZ4 Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough. This is due to a leak in the seal or the thermostat stuck open. DTC No. P0128 0128 Trouble diagnosis name DTC detecting condition The engine coolant temperature does not reach to specified temperature even though the engine has run long enough. Thermostat function DTC Confirmation Procedure Possible cause ● Thermostat ● Leakage from sealing portion of thermostat ● Engine coolant temperature sensor EBS00QZ5 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: ● For best results, perform at ambient temperature of –10°C (14°F) or higher. ● For best results, perform at engine coolant temperature of –10°C (14°F) to 60°C (140°F). WITH CONSULT-II 1. 2. 3. 4. 5. Replace thermostat with new one. Refer to CO-22, "THERMOSTAT AND THERMOSTAT HOUSING" . Use only a genuine NISSAN thermostat as a replacement. If an incorrect thermostat is used, the MIL may come on. Turn ignition switch ON. Select “COOLAN TEMP/S” in “DATA MONITOR” mode with CONSULT-II. Check that the “COOLAN TEMP/S” is above 60°C (140°F). If it is below 60°C (140°F), go to following step. If it is above 60°C (140°F), cool down the engine to less than 60°C (140°F), then retry from step 1. Drive vehicle for 10 consecutive minutes under the following conditions. VHCL SPEED SE 80 - 120 km/h (50 - 75 MPH) If 1st trip DTC is detected, go to EC-242, "Diagnostic Procedure" . WITH GST 1. Follow the procedure “WITH CONSULT-II” above. Diagnostic Procedure EBS00QZ6 1. CHECK ENGINE COOLANT TEMPERATURE SENSOR Refer to EC-243, "Component Inspection" . OK or NG OK >> INSPECTION END NG >> Replace engine coolant temperature sensor. Revision: July 2006 EC-242 2006 Quest DTC P0128 THERMOSTAT FUNCTION Component Inspection EBS00QZ7 A ENGINE COOLANT TEMPERATURE SENSOR 1. Check resistance between engine coolant temperature sensor terminals 1 and 2. EC C D PBIB2005E E 2. Temperature °C (°F) Resistance kΩ 20 (68) 2.1 - 2.9 50 (122) 0.68 - 1.0 90 (194) 0.236 - 0.260 F G If NG, replace engine coolant temperature sensor. SEF012P Removal and Installation H EBS00QZ8 ENGINE COOLANT TEMPERATURE SENSOR I Refer to CO-22, "THERMOSTAT AND THERMOSTAT HOUSING" . J K L M Revision: July 2006 EC-243 2006 Quest DTC P0130, P0150 A/F SENSOR 1 DTC P0130, P0150 A/F SENSOR 1 Component Description PFP:22693 EBS00QZ9 The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element. The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range (0.7 < < air). The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. SEF579Z An electronic circuit controls the pump current through the oxygenpump cell so that the composition of the exhaust gas in the diffusion gap remains constant at = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F). SEF580Z CONSULT-II Reference Value in Data Monitor Mode EBS00QZA Specification data are reference values. MONITOR ITEM A/F SEN1 (B1) A/F SEN1 (B2) CONDITION ● Engine: After warming up SPECIFICATION Maintaining engine speed at 2,000 rpm Fluctuates around 1.5V On Board Diagnosis Logic EBS00QZB To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/ F) sensor 1 signal fluctuates according to fuel feedback control. DTC No. P0130 0130 (Bank 1) P0150 0150 (Bank 2) Trouble diagnosis name Air fuel ratio (A/F) sensor 1 circuit DTC detecting condition ● The A/F signal computed by ECM from the A/ F sensor 1 signal is constantly approx. 1.5V. Possible Cause ● Harness or connectors (The A/F sensor 1 circuit is open or shorted.) ● Air fuel ratio (A/F) sensor 1 DTC Confirmation Procedure EBS00QZC CAUTION: Always drive vehicle at a safe speed. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11V at idle. WITH CONSULT-II 1. 2. 3. Start engine and warm it up to normal operating temperature. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication. Revision: July 2006 EC-244 2006 Quest DTC P0130, P0150 A/F SENSOR 1 4. 5. 6. If the indication is constantly approx. 1.5V and does not fluctuates, go to EC-251, "Diagnostic Procedure" . If the indication fluctuates around 1.5V, go to next step. A Select “A/F SEN1 (B1) P1276” (for DTC P0130) or “A/F SEN1 (B2) P1286” (for DTC P0150) of “A/F SEN1” in “DTC WORK SUPPORT” mode with CONSULT-II. Touch “START”. EC When the following conditions are met, “TESTING” will be displayed on the CONSULT-II screen. C ENG SPEED 1,100 - 3,200 rpm VHCL SPEED SE More than 64 km/h (40 MPH) B/FUEL SCHDL 1.0 - 8.0 msec Shift lever D position with “OD” ON D If “TESTING” is not displayed after 20 seconds, retry from step 2. E SEF576Z 7. F Release accelerator pedal fully. NOTE: Never apply brake during releasing the accelerator pedal. G H SEF577Z 8. 9. Make sure that “TESTING” changes to “COMPLETED”. If “TESTING” changed to “OUT OF CONDITION”, retry from step 6. Make sure that “OK” is displayed after touching “SELF-DIAG RESULT”. If “NG” is displayed, go to EC-251, "Diagnostic Procedure" . I J K L SEF578Z Overall Function Check EBS00QZD Use this procedure to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed. WITH GST 1. 2. 3. 4. 5. 6. 7. Start engine and warm it up to normal operating temperature. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position. Set D position with “OD” ON, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH). NOTE: Never apply brake during releasing the accelerator pedal. Repeat steps 2 to 3 five times. Stop the vehicle and turn ignition switch OFF. Wait at least 10 seconds and restart engine. Repeat steps 2 to 3 five times. Revision: July 2006 EC-245 2006 Quest M DTC P0130, P0150 A/F SENSOR 1 8. 9. Stop the vehicle and connect GST to the vehicle. Make sure that no DTC is displayed. If 1st trip DTC is displayed, go to EC-251, "Diagnostic Procedure" . Revision: July 2006 EC-246 2006 Quest DTC P0130, P0150 A/F SENSOR 1 Wiring Diagram EBS00QZE A BANK 1 EC C D E F G H I J K L M BBWA2014E Revision: July 2006 EC-247 2006 Quest DTC P0130, P0150 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed Approximately 2.6V Approximately 2.3V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-248 2006 Quest DTC P0130, P0150 A/F SENSOR 1 BANK 2 A EC C D E F G H I J K L M BBWA2015E Revision: July 2006 EC-249 2006 Quest DTC P0130, P0150 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed PBIB1584E 57 58 Approximately 2.6V W/R [Engine is running] LG/R 76 O 77 LG A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed Approximately 2.3V Approximately 3.1V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-250 2006 Quest DTC P0130, P0150 A/F SENSOR 1 Diagnostic Procedure EBS00QZF 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-251 2006 Quest DTC P0130, P0150 A/F SENSOR 1 2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect air fuel ratio (A/F) sensor 1 harness connector (1) (2). BBIA0656E : Vehicle front 2. 3. 3. Intake manifold collector Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB1683E 3. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● 15A fuse ● Harness for open or short between A/F sensor 1 and fuse >> Repair or replace harness or connectors. Revision: July 2006 EC-252 2006 Quest DTC P0130, P0150 A/F SENSOR 1 4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. A Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. EC A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank1 Bank 2 C D E F Continuity should exist. 4. G Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Bank 1 Bank 2 H A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 I J Continuity should not exist. 5. Also check harness for short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. K L 5. CHECK INTERMITTENT INCIDENT M Perform EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 6. NG >> Repair or replace. 6. REPLACE AIR FUEL RATIO (A/F) SENSOR 1 Replace malfunctioning air fuel ratio (A/F) sensor 1. CAUTION: ● Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. >> INSPECTION END Revision: July 2006 EC-253 2006 Quest DTC P0130, P0150 A/F SENSOR 1 Removal and Installation EBS00QZG AIR FUEL RATIO (A/F) SENSOR 1 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . Revision: July 2006 EC-254 2006 Quest DTC P0131, P0151 A/F SENSOR 1 DTC P0131, P0151 A/F SENSOR 1 Component Description PFP:22693 A EBS00QZH The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element. The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range (0.7 < < air). The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. EC C D SEF579Z E An electronic circuit controls the pump current through the oxygenpump cell so that the composition of the exhaust gas in the diffusion gap remains constant at = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F). F G H SEF580Z CONSULT-II Reference Value in Data Monitor Mode EBS00QZI I Specification data are reference values. MONITOR ITEM A/F SEN1 (B1) A/F SEN1 (B2) CONDITION ● Engine: After warming up SPECIFICATION Maintaining engine speed at 2,000 rpm J Fluctuates around 1.5V On Board Diagnosis Logic EBS00QZJ K To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/ F) sensor 1 signal is not inordinately low. DTC No. P0131 0131 (Bank 1) P0151 0151 (Bank 2) Trouble diagnosis name DTC detecting condition ● Air fuel ratio (A/F) sensor 1 circuit low voltage ● L Possible Cause The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0V. ● Harness or connectors (The A/F sensor 1 circuit is open or shorted.) Air fuel ratio (A/F) sensor 1 DTC Confirmation Procedure EBS00QZK NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle. WITH CONSULT-II 1. 2. Start engine and warm it up to normal operating temperature. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II. Revision: July 2006 EC-255 2006 Quest M DTC P0131, P0151 A/F SENSOR 1 3. 4. 5. 6. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication. If the indication is constantly approx. 0V, go to EC-261, "Diagnostic Procedure" . If the indication is not constantly approx. 0V, go to next step. Turn ignition switch OFF, wait at least 10 seconds and then restart engine. Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine. Maintain the following conditions for about 20 consecutive seconds. SEF581Z ENG SPEED 1,000 - 3,200 rpm VHCL SPEED SE More than 40 km/h (25 MPH) B/FUEL SCHDL 1.5 - 9.0 msec Gear position Suitable position 7. NOTE: ● Keep the accelerator pedal as steady as possible during the cruising. ● If this procedure is not completed within 1 minute after restarting engine at step 4, return to step 4. If 1st trip DTC is displayed, go to EC-261, "Diagnostic Procedure" . WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-256 2006 Quest DTC P0131, P0151 A/F SENSOR 1 Wiring Diagram EBS00QZL A BANK 1 EC C D E F G H I J K L M BBWA2014E Revision: July 2006 EC-257 2006 Quest DTC P0131, P0151 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed Approximately 2.6V Approximately 2.3V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-258 2006 Quest DTC P0131, P0151 A/F SENSOR 1 BANK 2 A EC C D E F G H I J K L M BBWA2015E Revision: July 2006 EC-259 2006 Quest DTC P0131, P0151 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed PBIB1584E 57 58 Approximately 2.6V W/R [Engine is running] LG/R 76 O 77 LG A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed Approximately 2.3V Approximately 3.1V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-260 2006 Quest DTC P0131, P0151 A/F SENSOR 1 Diagnostic Procedure EBS00QZM 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-261 2006 Quest DTC P0131, P0151 A/F SENSOR 1 2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect air fuel ratio (A/F) sensor 1 harness connector (1) (2). BBIA0656E : Vehicle front 2. 3. 3. Intake manifold collector Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB1683E 3. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● 15A fuse ● Harness for open or short between A/F sensor 1 and fuse >> Repair or replace harness or connectors. Revision: July 2006 EC-262 2006 Quest DTC P0131, P0151 A/F SENSOR 1 4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. A Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. EC A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank1 Bank 2 C D E F Continuity should exist. 4. G Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Bank 1 Bank 2 H A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 I J Continuity should not exist. 5. Also check harness for short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. K L 5. CHECK INTERMITTENT INCIDENT M Perform EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 6. NG >> Repair or replace. 6. REPLACE AIR FUEL RATIO (A/F) SENSOR 1 Replace malfunctioning air fuel ratio (A/F) sensor 1. CAUTION: ● Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. >> INSPECTION END Revision: July 2006 EC-263 2006 Quest DTC P0131, P0151 A/F SENSOR 1 Removal and Installation EBS00QZN AIR FUEL RATIO (A/F) SENSOR 1 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . Revision: July 2006 EC-264 2006 Quest DTC P0132, P0152 A/F SENSOR 1 DTC P0132, P0152 A/F SENSOR 1 Component Description PFP:22693 A EBS00QZO The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element. The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range (0.7 < < air). The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. EC C D SEF579Z E An electronic circuit controls the pump current through the oxygenpump cell so that the composition of the exhaust gas in the diffusion gap remains constant at = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F). F G H SEF580Z CONSULT-II Reference Value in Data Monitor Mode EBS00QZP I Specification data are reference values. MONITOR ITEM A/F SEN1 (B1) A/F SEN1 (B2) CONDITION ● Engine: After warming up SPECIFICATION Maintaining engine speed at 2,000 rpm J Fluctuates around 1.5V On Board Diagnosis Logic EBS00QZQ K To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/ F) sensor 1 signal is not inordinately high. DTC No. P0132 0132 (Bank 1) P0152 0152 (Bank 2) Trouble diagnosis name DTC detecting condition ● Air fuel ratio (A/F) sensor 1 circuit high voltage ● L Possible Cause The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 5V. ● Harness or connectors (The A/F sensor 1 circuit is open or shorted.) Air fuel ratio (A/F) sensor 1 DTC Confirmation Procedure EBS00QZR NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle. WITH CONSULT-II 1. 2. Start engine and warm it up to normal operating temperature. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II. Revision: July 2006 EC-265 2006 Quest M DTC P0132, P0152 A/F SENSOR 1 3. 4. 5. 6. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication. If the indication is constantly approx. 5V, go to EC-271, "Diagnostic Procedure" . If the indication is not constantly approx. 5V, go to next step. Turn ignition switch OFF, wait at least 10 seconds and then restart engine. Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine. Maintain the following conditions for about 20 consecutive seconds. SEF581Z ENG SPEED 1,000 - 3,200 rpm VHCL SPEED SE More than 40 km/h (25 MPH) B/FUEL SCHDL 1.5 - 9.0 msec Gear position Suitable position 7. NOTE: ● Keep the accelerator pedal as steady as possible during the cruising. ● If this procedure is not completed within 1 minute after restarting engine at step 4, return to step 4. If 1st trip DTC is displayed, go to EC-271, "Diagnostic Procedure" . WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-266 2006 Quest DTC P0132, P0152 A/F SENSOR 1 Wiring Diagram EBS00QZS A BANK 1 EC C D E F G H I J K L M BBWA2014E Revision: July 2006 EC-267 2006 Quest DTC P0132, P0152 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed Approximately 2.6V Approximately 2.3V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-268 2006 Quest DTC P0132, P0152 A/F SENSOR 1 BANK 2 A EC C D E F G H I J K L M BBWA2015E Revision: July 2006 EC-269 2006 Quest DTC P0132, P0152 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed PBIB1584E 57 58 Approximately 2.6V W/R [Engine is running] LG/R 76 O 77 LG A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed Approximately 2.3V Approximately 3.1V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-270 2006 Quest DTC P0132, P0152 A/F SENSOR 1 Diagnostic Procedure EBS00QZT 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-271 2006 Quest DTC P0132, P0152 A/F SENSOR 1 2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect air fuel ratio (A/F) sensor 1 harness connector (1) (2). BBIA0656E : Vehicle front 2. 3. 3. Intake manifold collector Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB1683E 3. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● 15A fuse ● Harness for open or short between A/F sensor 1 and fuse >> Repair or replace harness or connectors. Revision: July 2006 EC-272 2006 Quest DTC P0132, P0152 A/F SENSOR 1 4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. A Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. EC A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank1 Bank 2 C D E F Continuity should exist. 4. G Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Bank 1 Bank 2 H A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 I J Continuity should not exist. 5. Also check harness for short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. K L 5. CHECK INTERMITTENT INCIDENT M Perform EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 6. NG >> Repair or replace. 6. REPLACE AIR FUEL RATIO (A/F) SENSOR 1 Replace malfunctioning air fuel ratio (A/F) sensor 1. CAUTION: ● Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. >> INSPECTION END Revision: July 2006 EC-273 2006 Quest DTC P0132, P0152 A/F SENSOR 1 Removal and Installation EBS00QZU AIR FUEL RATIO (A/F) SENSOR 1 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . Revision: July 2006 EC-274 2006 Quest DTC P0133, P0153 A/F SENSOR 1 DTC P0133, P0153 A/F SENSOR 1 Component Description PFP:22693 A EBS00QZV The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element. The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range (0.7 < < air). The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. EC C D SEF579Z E An electronic circuit controls the pump current through the oxygenpump cell so that the composition of the exhaust gas in the diffusion gap remains constant at = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F). F G H SEF580Z CONSULT-II Reference Value in Data Monitor Mode EBS00QZW I Specification data are reference values. MONITOR ITEM A/F SEN1 (B1) A/F SEN1 (B2) CONDITION ● Engine: After warming up SPECIFICATION J Maintaining engine speed at 2,000 rpm Fluctuates around 1.5V On Board Diagnosis Logic EBS00QZX K To judge the malfunction of air fuel ratio (A/F) sensor 1, this diagnosis measures response time of the A/F signal computed by ECM from the air fuel ration (A/F) sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the air fuel ration (A/F) sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not. L DTC No. Trouble diagnosis name DTC detecting condition P0133 0133 (Bank 1) P0153 0153 (Bank 2) Air fuel ratio (A/F) sensor 1 circuit slow response Revision: July 2006 ● The response of the A/F signal computed by ECM from A/F sensor 1 signal takes more than the specified time. EC-275 Possible Cause ● Harness or connectors (The A/F sensor 1 circuit is open or shorted.) ● Air fuel ratio (A/F) sensor 1 ● Air fuel ratio (A/F) sensor 1 heater ● Fuel pressure ● Fuel injector ● Intake air leaks ● Exhaust gas leaks ● PCV ● Mass air flow sensor 2006 Quest M DTC P0133, P0153 A/F SENSOR 1 DTC Confirmation Procedure EBS00QZY NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11V at idle. WITH CONSULT-II 1. 2. 3. 4. 5. 6. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1minute under no load. Let engine idle for 1 minute. Select “A/F SEN1(B1) P1278/P1279” (for DTC P0133) or “A/F SEN1(B1) P1288/P1289” (for DTC P0153) of “A/F SEN1” in “DTC WORK SUPPORT” mode with CONSULT-II. Touch “START”. If “COMPLETED” appears on CONSULT-II screen, go to step 10. If “COMPLETED” does not appear on CONSULT-II screen, go to the following step. PBIB0756E 7. a. b. 8. After perform the following procedure, “TESTING” will be displayed on the CONSULT-II screen. Increase the engine speed up to 4,000 to 5,000 rpm and keep it for 10 seconds. Fully release accelerator pedal and then let engine idle for about 10 seconds. If “TESTING” is not displayed after 10 seconds, refer to EC142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . Wait for about 20 seconds at idle at under the condition that “TESTING” is displayed on the CONSULT-II screen. PBIB1925E 9. Make sure that “TESTING” changes to “COMPLETED”. If “TESTING” changed to “OUT OF CONDITION”, refer to EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" . 10. Make sure that “OK” is displayed after touching “SELF-DIAG RESULT”. If “NG” is displayed, go to EC-282, "Diagnostic Procedure" . PBIB0758E Revision: July 2006 EC-276 2006 Quest DTC P0133, P0153 A/F SENSOR 1 WITH GST 1. 2. 3. 4. 5. 6. 7. 8. 9. A Start engine and warm it up to normal operating temperature. Select “Service $01” with GST. Calculate the total value of “Short term fuel trim” and “Long term fuel trim” indications. EC Make sure that the total percentage should be within ±15%. If OK, go to the following step. If NG, check the following. C ● Intake air leaks ● Exhaust gas leaks ● Incorrect fuel pressure D ● Lack of fuel ● Fuel injectors ● Incorrect PCV hose connection E ● PCV valve ● Mass air flow sensor Turn ignition switch OFF and wait at least 10 seconds. F Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1minute under no load. Let engine idle for 1 minute. G Increase the engine speed up to 4,000 to 5,000 rpm and keep it for 10 seconds. Fully release accelerator pedal and then let engine idle for about 1 minute. Select “Service $07” with GST. H If 1st trip DTC is detected, go to EC-282, "Diagnostic Procedure" . I J K L M Revision: July 2006 EC-277 2006 Quest DTC P0133, P0153 A/F SENSOR 1 Wiring Diagram EBS00QZZ BANK 1 BBWA2014E Revision: July 2006 EC-278 2006 Quest DTC P0133, P0153 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) C Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed D E PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed F Approximately 2.6V Approximately 2.3V Approximately 2.3V G : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) H I J K L M Revision: July 2006 EC-279 2006 Quest DTC P0133, P0153 A/F SENSOR 1 BANK 2 BBWA2015E Revision: July 2006 EC-280 2006 Quest DTC P0133, P0153 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) C Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed D E PBIB1584E 57 58 Approximately 2.6V W/R [Engine is running] LG/R 76 O 77 LG A/F sensor 1 (Bank 2) ● ● Warm-up condition Idle speed F Approximately 2.3V Approximately 3.1V Approximately 2.3V G : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) H I J K L M Revision: July 2006 EC-281 2006 Quest DTC P0133, P0153 A/F SENSOR 1 Diagnostic Procedure EBS00R00 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. RETIGHTEN AIR FUEL RATIO (A/F) SENSOR 1 Loosen and retighten the air fuel ratio (A/F) sensor 1. BBIA0234E Tightening torque: 50 N-m (5.1 kg-m, 37 ft-lb) >> GO TO 3. Revision: July 2006 EC-282 2006 Quest DTC P0133, P0153 A/F SENSOR 1 3. CHECK EXHAUST GAS LEAK 1. 2. A Start engine and run it at idle. Listen for an exhaust gas leak before three way catalyst (manifold). EC C D PBIB1216E OK or NG OK >> GO TO 4. NG >> Repair or replace. E F 4. CHECK FOR INTAKE AIR LEAK G Listen for an intake air leak after the mass air flow sensor. OK or NG OK >> GO TO 5. NG >> Repair or replace. H I J K L M Revision: July 2006 EC-283 2006 Quest DTC P0133, P0153 A/F SENSOR 1 5. CLEAR THE SELF-LEARNING DATA 1. 2. 3. 4. With CONSULT-II Start engine and warm it up to normal operating temperature. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. Clear the self-learning control coefficient by touching “CLEAR” or “START”. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P172, P0174 or P0175 detected? Is it difficult to start engine? SEF968Y Without CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Turn ignition switch OFF. 3. Disconnect mass air flow sensor harness connector. 4. Restart engine and let it idle for at least 5 seconds. 5. Stop engine and reconnect mass air flow sensor harness connector. 6. Make sure DTC P0102 is displayed. 7. Erase the DTC memory. Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . 8. Make sure DTC P0000 is displayed. 9. Run engine for at least 10 minutes at idle speed. BBIA0327E Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Is it difficult to start engine? Yes or No Yes >> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to EC-331 or EC-343 . No >> GO TO 6. Revision: July 2006 EC-284 2006 Quest DTC P0133, P0153 A/F SENSOR 1 6. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. 2. A Turn ignition switch OFF. Disconnect air fuel ratio (A/F) sensor 1 harness connector (1) (2). EC C D BBIA0656E : Vehicle front 3. 4. 3. E Intake manifold collector F Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. G Voltage: Battery voltage OK or NG OK >> GO TO 8. NG >> GO TO 7. H I PBIB1683E 7. DETECT MALFUNCTIONING PART J Check the following. ● Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● 15A fuse ● Harness for open or short between A/F sensor 1 and fuse K L >> Repair or replace harness or connectors. M Revision: July 2006 EC-285 2006 Quest DTC P0133, P0153 A/F SENSOR 1 8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank1 Bank 2 Continuity should exist. 4. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Bank 1 Bank 2 A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 Continuity should not exist. 5. Also check harness for short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER Refer to EC-179, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> GO TO 13. 10. CHECK MASS AIR FLOW SENSOR Refer to EC-205, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> Replace mass air flow sensor. Revision: July 2006 EC-286 2006 Quest DTC P0133, P0153 A/F SENSOR 1 11. CHECK PCV VALVE A Refer to EC-47, "POSITIVE CRANKCASE VENTILATION" . OK or NG OK >> GO TO 12. NG >> Repair or replace PCV valve. EC 12. CHECK INTERMITTENT INCIDENT C Perform EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 13. NG >> Repair or replace. D 13. REPLACE AIR FUEL RATIO (A/F) SENSOR 1 E Replace malfunctioning air fuel ratio (A/F) sensor 1. CAUTION: ● Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. >> INSPECTION END F G H Removal and Installation EBS00R01 AIR FUEL RATIO (A/F) SENSOR 1 I Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . J K L M Revision: July 2006 EC-287 2006 Quest DTC P0137, P0157 HO2S2 DTC P0137, P0157 HO2S2 Component Description PFP:226A0 EBS00R02 The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the A/F sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 2 is not used for engine control operation. SEF327R CONSULT-II Reference Value in Data Monitor Mode EBS00R03 Specification data are reference values. MONITOR ITEM HO2S2 (B1) HO2S2 (B2) HO2S2 MNTR (B1) HO2S2 MNTR (B2) CONDITION SPECIFICATION ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: after warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - 0.3V ←→ Approx. 0.6 1.0V LEAN ←→ RICH On Board Diagnosis Logic EBS00R04 The heated oxygen sensor 2 has a much longer switching time between rich and lean than the heated oxygen sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the maximum voltage of the sensor is sufficiently high during the various driving condition such as fuelcut. PBIB2162E DTC No. P0137 0137 (Bank 1) P0157 0157 (Bank 2) Trouble diagnosis name Heated oxygen sensor 2 circuit low voltage Revision: July 2006 DTC detecting condition The maximum voltage from the sensor is not reached to the specified voltage. EC-288 Possible cause ● Harness or connectors (The sensor circuit is open or shorted) ● Heated oxygen sensor 2 ● Fuel pressure ● Fuel injector ● Intake air leaks 2006 Quest DTC P0137, P0157 HO2S2 DTC Confirmation Procedure EBS00R05 NOTE: If DTC confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. A EC WITH CONSULT-II TESTING CONDITION: For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30 °C (32 to 86 °F). 1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. 2. Start engine and warm it up to the normal operating temperature. 3. Turn ignition switch OFF and wait at least 10 seconds. 4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. 5. Let engine idle for 1 minute. 6. Make sure that “COOLAN TEMP/S” indicates more than 70°C (158°F). SEF174Y If not, warm up engine and go to next step when “COOLAN TEMP/S” indication reaches to 70°C (158°F). 7. Open engine hood. 8. Select “HO2S2 (B1) P1147” (for DTC P0137) or “HO2S2 (B2) P1167” (for DTC P0157) of “HO2S2” in “DTC WORK SUPPORT” mode with CONSULT-II. 9. Start engine and following the instruction of CONSULT-II. C D E F G H I J K PBIB2373E NOTE: It will take at most 10 minutes until “COMPLETED” is displayed. 10. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-295, "Diagnostic Procedure" . If “CAN NOT BE DIAGNOSED” is displayed, perform the following. a. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle). b. Return to step 1. Overall Function Check L M EBS00R06 Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed. WITH GST 1. 2. 3. 4. 5. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and ground. Revision: July 2006 EC-289 2006 Quest DTC P0137, P0157 HO2S2 6. 7. 8. Check the voltage when revving up to 4,000 rpm under no load at least 10 times. (Depress and release accelerator pedal as soon as possible.) The voltage should be above 0.78V at least once during this procedure. If the voltage can be confirmed in step 6, step 7 is not necessary. Keep vehicle at idling for 10 minutes, then check the voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position with “OD” OFF. The voltage should be above 0.78V at least once during this procedure. If NG, go to EC-295, "Diagnostic Procedure" . Revision: July 2006 EC-290 PBIB1607E 2006 Quest DTC P0137, P0157 HO2S2 Wiring Diagram EBS00R07 A BANK 1 EC C D E F G H I J K L M BBWA2001E Revision: July 2006 EC-291 2006 Quest DTC P0137, P0157 HO2S2 Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 25 P ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 1) 0 - 1.0V [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 3,600 rpm. [Engine is running] 74 W Heated oxygen sensor 2 (Bank 1) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - Approximately 1.0V [Engine is running] 78 B Heated oxygen sensor 2 ground Revision: July 2006 ● Warm-up condition ● Idle speed EC-292 Approximately 0V 2006 Quest DTC P0137, P0157 HO2S2 BANK 2 A EC C D E F G H I J K L M BBWA2002E Revision: July 2006 EC-293 2006 Quest DTC P0137, P0157 HO2S2 Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 6 GR ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 2) 0 - 1.0V [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 3,600 rpm. [Engine is running] 55 W Heated oxygen sensor 2 (Bank 2) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - Approximately 1.0V [Engine is running] 78 B Heated oxygen sensor 2 ground Revision: July 2006 ● Warm-up condition ● Idle speed EC-294 Approximately 0V 2006 Quest DTC P0137, P0157 HO2S2 Diagnostic Procedure EBS00R08 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-295 2006 Quest DTC P0137, P0157 HO2S2 2. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. 3. Clear the self-learning control coefficient by touching “CLEAR”. 4. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 or P0174 detected? Is it difficult to start engine? 1. 2. SEF968Y Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. 6. Make sure DTC P0102 is displayed. 7. Erase the DTC memory. Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . 8. Make sure DTC P0000 is displayed. 9. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 or P0174 detected? Is it difficult to start engine? Yes or No Yes >> Perform trouble diagnosis for DTC P0171, P0174. Refer to EC-331 . No >> GO TO 3. 1. 2. 3. 4. 5. Revision: July 2006 EC-296 BBIA0327E 2006 Quest DTC P0137, P0157 HO2S2 3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. A Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect heated oxygen sensor 2 harness connector. EC C D E F G H I J BBIA0324E 4. Check harness continuity between ECM terminal 78 and HO2S2 terminal 4. Refer to Wiring Diagram. K Continuity should exist. L 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-297 M 2006 Quest DTC P0137, P0157 HO2S2 4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram. Terminals DTC Bank ECM Sensor P0137 74 1 1 P0157 55 1 2 Continuity should exist. 2. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Terminals DTC Bank ECM Sensor P0137 74 1 1 P0157 55 1 2 Continuity should not exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK HEATED OXYGEN SENSOR 2 Refer to EC-298, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace malfunctioning heated oxygen sensor 2. 6. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R09 HEATED OXYGEN SENSOR 2 With CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. SEF174Y Revision: July 2006 EC-298 2006 Quest DTC P0137, P0157 HO2S2 6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select “HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II. A EC C PBIB1672E 7. D Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ±25%. E F G PBIB2163E “HO2S2 (B1)/(B2)” should be above 0.78V at least once when the “FUEL INJECTION” is +25%. “HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is −25%. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. H I J Without CONSULT-II 1. 2. 3. 4. 5. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and ground. 6. Check the voltage when revving up to 4,000 rpm under no load at least 10 times. (Depress and release accelerator pedal as soon as possible.) The voltage should be above 0.78V at least once during this procedure. If the voltage is above 0.78V at step 6, step 7 is not necessary. 7. Keep vehicle at idling for 10 minutes, then check voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position with “OD” OFF. The voltage should be below 0.18V at least once during this PBIB1607E procedure. 8. If NG, replace heated oxygen sensor 2. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. Revision: July 2006 EC-299 2006 Quest K L M DTC P0137, P0157 HO2S2 Removal and Installation EBS00R0A HEATED OXYGEN SENSOR 2 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . Revision: July 2006 EC-300 2006 Quest DTC P0138, P0158 HO2S2 DTC P0138, P0158 HO2S2 Component Description PFP:226A0 A EBS00R0B The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 2 is not used for engine control operation. EC C D SEF327R E CONSULT-II Reference Value in Data Monitor Mode EBS00R0C Specification data are reference values. MONITOR ITEM HO2S2 (B1) HO2S2 (B2) HO2S2 MNTR (B1) HO2S2 MNTR (B2) CONDITION ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: after warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load F SPECIFICATION 0 - 0.3V ←→ Approx. 0.6 1.0V G LEAN ←→ RICH H On Board Diagnosis Logic EBS00R0D The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/ F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. I MALFUNCTION A To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the voltage is unusually high during the various driving condition such as fuel-cut. J K L PBIB1848E Revision: July 2006 EC-301 2006 Quest M DTC P0138, P0158 HO2S2 MALFUNCTION B To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the minimum voltage of sensor is sufficiently low during the various driving condition such as fuel-cut. PBIB2376E DTC No. Trouble diagnosis name P0138 0138 (Bank 1) P0158 0158 (Bank 2) DTC detecting condition A ● Harness or connectors (The sensor circuit is open or shorted) ● Heated oxygen sensor 2 ● Harness or connectors (The sensor circuit is open or shorted) ● Heated oxygen sensor 2 ● Fuel pressure ● Fuel injector An excessively high voltage from the sensor is sent to ECM. Heated oxygen sensor 2 circuit high voltage B Possible cause The minimum voltage from the sensor is not reached to the specified voltage. DTC Confirmation Procedure EBS00R0E Perform PROCEDURE FOR MALFUNCTION A first. If DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. PROCEDURE FOR MALFUNCTION A With CONSULT-II 1. 2. 3. 4. 5. 6. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 2 minutes. If 1st trip DTC is detected, go to EC-309, "PROCEDURE FOR MALFUNCTION A" . SEF174Y With GST Follow the procedure “With CONSULT-II” above. Revision: July 2006 EC-302 2006 Quest DTC P0138, P0158 HO2S2 PROCEDURE FOR MALFUNCTION B With CONSULT-II A TESTING CONDITION: For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30 °C (32 to 86 °F). EC 1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. 2. Start engine and warm it up to the normal operating temperaC ture. 3. Turn ignition switch OFF and wait at least 10 seconds. 4. Start engine and keep the engine speed between 3,500 and D 4,000 rpm for at least 1 minute under no load. 5. Let engine idle for 1 minute. 6. Make sure that “COOLAN TEMP/S” indicates more than 70°C E (158°F). SEF174Y If not, warm up engine and go to next step when “COOLAN TEMP/S” indication reaches to 70°C (158°F). F 7. Open engine hood. 8. Select “HO2S2 (B1) P1146” (for DTC P0138) or “HO2S2 (B2) P1166” (for DTC P0158) of “HO2S2” in “DTC WORK SUPPORT” mode with CONSULT-II. G 9. Start engine and following the instruction of CONSULT-II. H I J PBIB2372E NOTE: It will take at most 10 minutes until “COMPLETED” is displayed. 10. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-312, "PROCEDURE FOR MALFUNCTION B" . If “CAN NOT BE DIAGNOSED” is displayed, perform the following. a. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle). b. Return to step 1. K L M Overall Function Check EBS00R0F PROCEDURE MALFUNCTION B Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed. With GST 1. 2. 3. 4. 5. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and ground. Revision: July 2006 EC-303 2006 Quest DTC P0138, P0158 HO2S2 6. 7. 8. Check the voltage when revving up to 4,000 rpm under no load at least 10 times. (Depress and release accelerator pedal as soon as possible.) The voltage should be below 0.18V at least once during this procedure. If the voltage can be confirmed in step 6, step 7 is not necessary. Keep vehicle at idling for 10 minutes, then check the voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position with “OD” OFF. The voltage should be below 0.18V at least once during this procedure. If NG, go to EC-312, "PROCEDURE FOR MALFUNCTION B" . Revision: July 2006 EC-304 PBIB1607E 2006 Quest DTC P0138, P0158 HO2S2 Wiring Diagram EBS00R0G A BANK 1 EC C D E F G H I J K L M BBWA2001E Revision: July 2006 EC-305 2006 Quest DTC P0138, P0158 HO2S2 Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 25 P ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 1) 0 - 1.0V [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 3,600 rpm. [Engine is running] 74 W Heated oxygen sensor 2 (Bank 1) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - Approximately 1.0V [Engine is running] 78 B Heated oxygen sensor 2 ground Revision: July 2006 ● Warm-up condition ● Idle speed EC-306 Approximately 0V 2006 Quest DTC P0138, P0158 HO2S2 BANK 2 A EC C D E F G H I J K L M BBWA2002E Revision: July 2006 EC-307 2006 Quest DTC P0138, P0158 HO2S2 Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 6 GR ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 2) 0 - 1.0V [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 3,600 rpm. [Engine is running] 55 W Heated oxygen sensor 2 (Bank 2) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - Approximately 1.0V [Engine is running] 78 B Heated oxygen sensor 2 ground Revision: July 2006 ● Warm-up condition ● Idle speed EC-308 Approximately 0V 2006 Quest DTC P0138, P0158 HO2S2 Diagnostic Procedure EBS00R0H A PROCEDURE FOR MALFUNCTION A 1. CHECK GROUND CONNECTIONS 1. 2. EC Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-309 2006 Quest DTC P0138, P0158 HO2S2 2. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. Disconnect ECM harness connector. Disconnect heated oxygen sensor 2 harness connector. 3. Check harness continuity between ECM terminal 78 and HO2S2 terminal 4. Refer to Wiring Diagram. BBIA0324E Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-310 2006 Quest DTC P0138, P0158 HO2S2 3. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. A Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram. EC Terminals DTC Bank ECM Sensor P0138 74 1 1 P0158 55 1 2 C Continuity should exist. 2. D Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. E Terminals DTC Bank ECM Sensor P0138 74 1 1 P0158 55 1 2 F Continuity should not exist. G 3. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. H 4. CHECK HO2S2 CONNECTOR FOR WATER I Check HO2S2 connectors for water. Water should not exist. J OK or NG OK >> GO TO 5. NG >> Repair or replace harness or connectors. K 5. CHECK HEATED OXYGEN SENSOR 2 L Refer to EC-316, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace malfunctioning heated oxygen sensor 2. M 6. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-311 2006 Quest DTC P0138, P0158 HO2S2 PROCEDURE FOR MALFUNCTION B 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-312 2006 Quest DTC P0138, P0158 HO2S2 2. CLEAR THE SELF-LEARNING DATA A With CONSULT-II Start engine and warm it up to normal operating temperature. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. 3. Clear the self-learning control coefficient by touching “CLEAR”. 4. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0172 or P0175 detected? Is it difficult to start engine? 1. 2. EC C D E SEF968Y Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. 6. Make sure DTC P0102 is displayed. 7. Erase the DTC memory. Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . 8. Make sure DTC P0000 is displayed. 9. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0172 or P0175 detected? Is it difficult to start engine? Yes or No Yes >> Perform trouble diagnosis for DTC P0172, P0175. Refer to EC-343 . No >> GO TO 3. F 1. 2. 3. 4. 5. G H I BBIA0327E J K L M Revision: July 2006 EC-313 2006 Quest DTC P0138, P0158 HO2S2 3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect heated oxygen sensor 2 harness connector. BBIA0324E 4. Check harness continuity between ECM terminal 78 and HO2S2 terminal 4. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-314 2006 Quest DTC P0138, P0158 HO2S2 4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. A Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram. EC Terminals DTC Bank ECM Sensor P0138 74 1 1 P0158 55 1 2 C Continuity should exist. 2. D Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. E Terminals DTC Bank ECM Sensor P0138 74 1 1 P0158 55 1 2 F Continuity should not exist. G 3. Also check harness for short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. H 5. CHECK HEATED OXYGEN SENSOR 2 I Refer to EC-316, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace malfunctioning heated oxygen sensor 2. J 6. CHECK INTERMITTENT INCIDENT K Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . L >> INSPECTION END M Revision: July 2006 EC-315 2006 Quest DTC P0138, P0158 HO2S2 Component Inspection EBS00R0I HEATED OXYGEN SENSOR 2 With CONSULT-II 1. 2. 3. 4. 5. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select “HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II. PBIB1672E 6. Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ±25%. PBIB2029E “HO2S2 (B1)/(B2)” should be above 0.78V at least once when the “FUEL INJECTION” is +25%. “HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is −25%. 7. If NG, replace heated oxygen sensor 2. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. Without CONSULT-II 1. 2. 3. 4. 5. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and ground. Revision: July 2006 EC-316 2006 Quest DTC P0138, P0158 HO2S2 6. Check the voltage when revving up to 4,000 rpm under no load at least 10 times. A (Depress and release accelerator pedal as soon as possible.) The voltage should be above 0.78V at least once during this procedure. EC If the voltage is above 0.78V at step 6, step 7 is not necessary. 7. Keep vehicle at idling for 10 minutes, then check voltage. C Or check the voltage when coasting from 80 km/h (50 MPH) in D position with “OD” OFF. The voltage should be below 0.18V at least once during this PBIB1607E procedure. D 8. If NG, replace heated oxygen sensor 2. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 E in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. F Removal and Installation EBS00R0J HEATED OXYGEN SENSOR 2 G Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . H I J K L M Revision: July 2006 EC-317 2006 Quest DTC P0139, P0159 HO2S2 DTC P0139, P0159 HO2S2 Component Description PFP:226A0 EBS00R0K The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the A/F sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 2. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 2 is not used for engine control operation. SEF327R CONSULT-II Reference Value in Data Monitor Mode EBS00R0L Specification data are reference values. MONITOR ITEM HO2S2 (B1) HO2S2 (B2) HO2S2 MNTR (B1) HO2S2 MNTR (B2) CONDITION SPECIFICATION ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met 0 - 0.3V ←→ Approx. 0.6 - 1.0V – Engine: after warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load LEAN ←→ RICH On Board Diagnosis Logic EBS00R0M The heated oxygen sensor 2 has a much longer switching time between rich and lean than the A/F sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the switching response of the sensor's voltage is faster than specified during the various driving condition such as fuel-cut. SEF302U DTC No. P0139 0139 (Bank 1) P0159 0159 (Bank 2) Trouble diagnosis name Heated oxygen sensor 2 circuit slow response Revision: July 2006 DTC detecting condition It takes more time for the sensor to respond between rich and lean than the specified time. EC-318 Possible cause ● Harness or connectors (The sensor circuit is open or shorted) ● Heated oxygen sensor 2 ● Fuel pressure ● Fuel injector ● Intake air leaks 2006 Quest DTC P0139, P0159 HO2S2 DTC Confirmation Procedure EBS00R0N NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. A EC WITH CONSULT-II TESTING CONDITION: For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30 °C (32 to 86 °F). 1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. 2. Start engine and warm it up to the normal operating temperature. 3. Turn ignition switch OFF and wait at least 10 seconds. 4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. 5. Let engine idle for 1 minute. 6. Make sure that “COOLAN TEMP/S” indicates more than 70°C (158°F). SEF174Y If not, warm up engine and go to next step when “COOLAN TEMP/S” indication reaches to 70°C (158°F). 7. Select “HO2S2 (B1) P0139” or “HO2S2 (B2) P0159” of “HO2S2” in “DTC WORK SUPPORT” mode with CONSULT-II. 8. Start engine and following the instruction of CONSULT-II. C D E F G H I J K PBIB2374E 9. a. b. NOTE: It will take at most 10 minutes until “COMPLETED” is displayed. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-325, "Diagnostic Procedure" . If “CAN NOT BE DIAGNOSED” is displayed, perform the following. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle). Return to step 1. Overall Function Check L M EBS00R0O Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a DTC might not be confirmed. WITH GST 1. 2. 3. 4. 5. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and ground. Revision: July 2006 EC-319 2006 Quest DTC P0139, P0159 HO2S2 6. 7. 8. Check the voltage when revving up to 4,000 rpm under no load at least 10 times. (Depress and release accelerator pedal as soon as possible.) A change of voltage should be more than 0.06V for 1 second during this procedure. If the voltage can be confirmed in step 6, step 7 is not necessary. Keep vehicle at idling for 10 minutes, then check the voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position with “OD” OFF. A change of voltage should be more than 0.06V for 1 second during this procedure. If NG, go to EC-325, "Diagnostic Procedure" . Revision: July 2006 EC-320 PBIB1607E 2006 Quest DTC P0139, P0159 HO2S2 Wiring Diagram EBS00R0P A BANK 1 EC C D E F G H I J K L M BBWA2001E Revision: July 2006 EC-321 2006 Quest DTC P0139, P0159 HO2S2 Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 25 P ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 1) 0 - 1.0V [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 3,600 rpm. [Engine is running] 74 W Heated oxygen sensor 2 (Bank 1) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - Approximately 1.0V [Engine is running] 78 B Heated oxygen sensor 2 ground Revision: July 2006 ● Warm-up condition ● Idle speed EC-322 Approximately 0V 2006 Quest DTC P0139, P0159 HO2S2 BANK 2 A EC C D E F G H I J K L M BBWA2002E Revision: July 2006 EC-323 2006 Quest DTC P0139, P0159 HO2S2 Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 6 GR ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warming up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load. Heated oxygen sensor 2 heater (Bank 2) 0 - 1.0V [Ignition switch: ON] ● Engine stopped [Engine is running] ● BATTERY VOLTAGE (11 - 14V) Engine speed is above 3,600 rpm. [Engine is running] 55 W Heated oxygen sensor 2 (Bank 2) ● Revving engine from idle to 3,000 rpm quickly after the following conditions are met – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - Approximately 1.0V [Engine is running] 78 B Heated oxygen sensor 2 ground Revision: July 2006 ● Warm-up condition ● Idle speed EC-324 Approximately 0V 2006 Quest DTC P0139, P0159 HO2S2 Diagnostic Procedure EBS00R0Q 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-325 2006 Quest DTC P0139, P0159 HO2S2 2. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. 3. Clear the self-learning control coefficient by touching “CLEAR”. 4. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Is it difficult to start engine? 1. 2. SEF968Y Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. 6. Make sure DTC P0102 is displayed. 7. Erase the DTC memory. Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . 8. Make sure DTC P0000 is displayed. 9. Run engine for at least 10 minutes at idle speed. BBIA0327E Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Is it difficult to start engine? Yes or No Yes >> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to EC-331, "DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION" or EC-343, "DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION" . No >> GO TO 3. 1. 2. 3. 4. 5. Revision: July 2006 EC-326 2006 Quest DTC P0139, P0159 HO2S2 3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. A Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect heated oxygen sensor 2 harness connector. EC C D E F G H I J BBIA0324E 4. Check harness continuity between ECM terminal 78 and HO2S2 terminal 4. Refer to Wiring Diagram. K Continuity should exist. L 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-327 M 2006 Quest DTC P0139, P0159 HO2S2 4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram. Terminals DTC Bank ECM Sensor P0139 74 1 1 P0159 55 1 2 Continuity should exist. 2. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Terminals DTC Bank ECM Sensor P0139 74 1 1 P0159 55 1 2 Continuity should not exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK HEATED OXYGEN SENSOR 2 Refer to EC-328, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace malfunctioning heated oxygen sensor 2. 6. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R0R HEATED OXYGEN SENSOR 2 With CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. SEF174Y Revision: July 2006 EC-328 2006 Quest DTC P0139, P0159 HO2S2 6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select “HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II. A EC C PBIB1672E 7. D Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ±25%. E F G PBIB2029E “HO2S2 (B1)/(B2)” should be above 0.78V at least once when the “FUEL INJECTION” is +25%. “HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is −25%. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. H I J Without CONSULT-II 1. 2. 3. 4. 5. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and ground. 6. Check the voltage when revving up to 4,000 rpm under no load at least 10 times. (Depress and release accelerator pedal as soon as possible.) The voltage should be above 0.78V at least once during this procedure. If the voltage is above 0.78V at step 6, step 7 is not necessary. 7. Keep vehicle at idling for 10 minutes, then check voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position with “OD” OFF. The voltage should be below 0.18V at least once during this PBIB1607E procedure. 8. If NG, replace heated oxygen sensor 2. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. Revision: July 2006 EC-329 2006 Quest K L M DTC P0139, P0159 HO2S2 Removal and Installation EBS00R0S HEATED OXYGEN SENSOR 2 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . Revision: July 2006 EC-330 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION On Board Diagnosis Logic PFP:16600 A EBS00R0T With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calcu- EC lates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic). C Sensor Input signal to ECM Density of oxygen in exhaust gas (Mixture ratio feedback signal) A/F sensors 1 DTC No. Trouble diagnosis name ECM function Fuel injection control P0174 0174 (Bank 2) Fuel injection system too lean ● Fuel injection system does not operate properly. ● The amount of mixture ratio compensation is too large. (The mixture ratio is too lean.) Fuel injector D DTC detecting condition P0171 0171 (Bank 1) Actuator Possible cause ● Intake air leaks ● A/F sensor 1 ● Fuel injector ● Exhaust gas leaks ● Incorrect fuel pressure ● Lack of fuel ● Mass air flow sensor ● Incorrect PCV hose connection DTC Confirmation Procedure E F G EBS00R0U NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. H I WITH CONSULT-II 1. 2. 3. 4. 5. 6. a. b. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. Clear the self-learning control coefficient by touching “CLEAR”. Select “DATA MONITOR” mode with CONSULT-II. Start engine again and let it idle for at least 10 minutes. The 1st trip DTC P0171 or P0174 should be detected at this stage, if a malfunction exists. If so, go to EC-337, "Diagnostic Procedure" . NOTE: If 1st trip DTC is not detected during above procedure, performing the following procedure is advised. Turn ignition switch OFF and wait at least 10 seconds. SEF968Y Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for 10 minutes. Refer to the table below. Hold the accelerator pedal as steady as possible. The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following conditions should be satisfied at the same time. Engine speed Engine speed in the freeze frame data ± 400 rpm Vehicle speed Vehicle speed in the freeze frame data ± 10 km/h (6 MPH) Engine coolant temperature (T) condition Revision: July 2006 When the freeze frame data shows lower than 70 °C (158 °F), T should be lower than 70 °C (158 °F). When the freeze frame data shows higher than or equal to 70 °C (158 °F), T should be higher than or equal to 70 °C (158 °F). EC-331 2006 Quest J K L M DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION 7. 8. If it is difficult to start engine at step 6, the fuel injection system has a malfunction, too. Crank engine while depressing accelerator pedal. If engine starts, go to EC-337, "Diagnostic Procedure" . If engine does not start, check exhaust and intake air leak visually. WITH GST 1. 2. 3. 4. 5. 6. 7. 8. 9. a. b. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. Select “Service $03” with GST. Make sure DTC P0102 is detected. Select “Service $04” with GST and erase the DTC P0102. Start engine again and let it idle for at least 10 minutes. Select “Service $07” with GST. The 1st trip DTC P0171 or BBIA0327E P0174 should be detected at this stage, if a malfunction exists. If so, go to EC-337, "Diagnostic Procedure" . NOTE: If 1st trip DTC is not detected during above procedure, performing the following procedure is advised. Turn ignition switch OFF and wait at least 10 seconds. Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for 10 minutes. Refer to the table below. Hold the accelerator pedal as steady as possible. The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following conditions should be satisfied at the same time. Engine speed Engine speed in the freeze frame data ± 400 rpm Vehicle speed Vehicle speed in the freeze frame data ± 10 km/h (6 MPH) Engine coolant temperature (T) condition When the freeze frame data shows lower than 70 °C (158 °F), T should be lower than 70 °C (158 °F). When the freeze frame data shows higher than or equal to 70 °C (158 °F), T should be higher than or equal to 70 °C (158 °F). 10. If it is difficult to start engine at step 8, the fuel injection system has a malfunction. 11. Crank engine while depressing accelerator pedal. If engine starts, go to EC-337, "Diagnostic Procedure" . If engine does not start, check exhaust and intake air leak visually. Revision: July 2006 EC-332 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION Wiring Diagram EBS00R0V A BANK 1 EC C D E F G H I J K L M BBWA2018E Revision: July 2006 EC-333 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed Approximately 2.6V Approximately 2.3V Approximately 2.3V BATTERY VOLTAGE [Engine is running] ● Warm-up condition ● Idle speed (11 - 14V) NOTE: The pulse cycle changes depending on rpm at idle 21 22 23 L/W R/Y R/B Fuel injector No. 5 Fuel injector No. 3 Fuel injector No. 1 SEC984C BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. SEC985C : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-334 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION BANK 2 A EC C D E F G H I J K L M BBWA2003E Revision: July 2006 EC-335 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed PBIB1584E BATTERY VOLTAGE [Engine is running] 40 V/W*1 Fuel injector No. 6 ● Warm-up condition ● Idle speed (11 - 14V) NOTE: The pulse cycle changes depending on rpm at idle SEC984C P/R*2 41 42 R/L R/W Fuel injector No. 4 Fuel injector No. 2 BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. SEC985C 57 58 W/R LG/R 76 O 77 LG Approximately 2.6V [Engine is running] A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed Approximately 2.3V Approximately 3.1V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-336 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION Diagnostic Procedure EBS00R0W 1. CHECK EXHAUST GAS LEAK 1. 2. A Start engine and run it at idle. Listen for an exhaust gas leak before three way catalyst (manifold). EC C D E PBIB1216E OK or NG OK >> GO TO 2. NG >> Repair or replace. F 2. CHECK FOR INTAKE AIR LEAK G 1. Listen for an intake air leak after the mass air flow sensor. 2. Check PCV hose connection. OK or NG OK >> GO TO 3. NG >> Repair or replace. H I J K L M Revision: July 2006 EC-337 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION 3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect corresponding A/F sensor 1 harness connector (1) (2). BBIA0656E : Vehicle front 3. 4. 3. Intake manifold collector Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank 1 Bank 2 Continuity should exist. 5. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Bank 1 Bank 2 A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 Continuity should not exist. 6. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-338 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION 4. CHECK FUEL PRESSURE 1. 2. A Release fuel pressure to zero. Refer to EC-84, "FUEL PRESSURE RELEASE" . Install fuel pressure gauge and check fuel pressure. Refer to EC-85, "FUEL PRESSURE CHECK" . EC At idling: 350 kPa (3.57 kg/cm2 , 51 psi) OK or NG OK (With CONSULT-II)>>GO TO 6. OK (Without CONSULT-II)>>GO TO 7. NG >> GO TO 5. C D 5. DETECT MALFUNCTIONING PART Check the following. ● Fuel pump and circuit (Refer to EC-692, "FUEL PUMP" .) ● Fuel pressure regulator (Refer to EC-85, "FUEL PRESSURE CHECK" .) ● Fuel lines ● Fuel filter for clogging E F >> Repair or replace. G 6. CHECK MASS AIR FLOW SENSOR H With CONSULT-II 1. Install all removed parts. 2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II. 2.0 - 6.0 g·m/sec: 7.0 - 20.0 g·m/sec: I at idling at 2,500 rpm OK or NG OK >> GO TO 8. NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or ground. Refer to EC-197, "DTC P0101 MAF SENSOR" . J K 7. CHECK MASS AIR FLOW SENSOR L With GST 1. Install all removed parts. 2. Check mass air flow sensor signal in Service $01 with GST. 2.0 - 6.0 g·m/sec: 7.0 - 20.0 g·m/sec: M at idling at 2,500 rpm OK or NG OK (P0171)>>GO TO 9. OK (P0174)>>GO TO 11. NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or ground. Refer to EC-197, "DTC P0101 MAF SENSOR" . Revision: July 2006 EC-339 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION 8. CHECK FUNCTION OF FUEL INJECTOR With CONSULT-II Start engine. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II. 3. Make sure that each circuit produces a momentary engine speed drop. 1. 2. PBIB0133E OK or NG OK >> GO TO 12. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . Revision: July 2006 EC-340 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION 9. CHECK FUNCTION OF FUEL INJECTOR-I 1. 2. 3. – – A Without CONSULT-II Stop engine. Disconnect harness connector F44 (2), F101 (3) Turn ignition switch ON. EC :Vehicle front 1: Intake manifold collector C D E BBIA0657E 4. Check voltage between harness connector F44 terminal 5 and ground with CONSULT-II or tester. F Voltage: Battery voltage 5. 6. 7. G Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between harness connector F44 terminal and ECM terminal as follows. Refer to Wiring Diagram. Cylinder Harness connector F44 terminal ECM terminal 1 6 23 3 2 22 5 1 21 H PBIB2323E I J Continuity should exist. K 8. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 10. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . L 10. CHECK FUNCTION OF FUEL INJECTOR-II M Provide battery voltage between harness connector F101 as follows and then interrupt it. Listen to each fuel injector operating sound. Cylinder Harness connector F101 terminal (+) (–) 1 5 6 3 5 2 5 5 1 Operating sound should exist. PBIB2324E OK or NG OK >> GO TO 12. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . Revision: July 2006 EC-341 2006 Quest DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION 11. CHECK FUNCTION OF FUEL INJECTOR 1. 2. Start engine. Listen to fuel injectors No.2, No.4, No.6 operating sound. Clicking noise should exist. OK or NG OK >> GO TO 12. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . PBIB1986E 12. CHECK FUEL INJECTOR 1. 2. 3. 4. 5. 6. 7. 8. Confirm that the engine is cooled down and there are no fire hazards near the vehicle. Turn ignition switch OFF. Disconnect all fuel injector harness connectors. Remove fuel injector gallery assembly. Refer to EM-39, "FUEL INJECTOR AND FUEL TUBE" . Keep fuel hose and all fuel injectors connected to fuel injector gallery. For DTC P0171, reconnect fuel injector harness connectors on bank 1. For DTC P0174, reconnect fuel injector harness connectors on bank 2. Disconnect all ignition coil harness connectors. Prepare pans or saucers under each fuel injector. Crank engine for about 3 seconds. For DTC P0171, make sure that fuel sprays out from fuel injectors on bank 1. For DTC P0174, make sure that fuel sprays out from fuel injectors on bank 2. Fuel should be sprayed evenly for each fuel injector. OK or NG OK >> GO TO 13. NG >> Replace fuel injectors from which fuel does not spray out. Always replace O-ring with new ones. PBIB1726E 13. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-342 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION On Board Diagnosis Logic PFP:16600 A EBS00R0X With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calcu- EC lates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too rich.), the ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic). C Sensor A/F sensors 1 DTC No. P0172 0172 (Bank 1) P0175 0175 (Bank 2) Input signal to ECM Density of oxygen in exhaust gas (Mixture ratio feedback signal) Trouble diagnosis name Fuel injection system too rich ECM function Fuel injection control Actuator Fuel injector D DTC detecting condition Possible cause ● A/F sensor 1 ● Fuel injection system does not operate properly. ● Fuel injector ● The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.) ● Exhaust gas leaks ● Incorrect fuel pressure ● Mass air flow sensor DTC Confirmation Procedure E F EBS00R0Y NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. G H WITH CONSULT-II 1. 2. 3. 4. 5. 6. a. b. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. Clear the self-learning control coefficient by touching “CLEAR”. Select “DATA MONITOR” mode with CONSULT-II. Start engine again and let it idle for at least 10 minutes. The 1st trip DTC P0172, P0175 should be detected at this stage, if a malfunction exists. If so, go to EC-349, "Diagnostic Procedure" . NOTE: If 1st trip DTC is not detected during above procedure, performing the following procedure is advised. Turn ignition switch OFF and wait at least 10 seconds. SEF968Y Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for 10 minutes. Refer to the table below. Hold the accelerator pedal as steady as possible. The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following conditions should be satisfied at the same time. Engine speed Engine speed in the freeze frame data ± 400 rpm Vehicle speed Vehicle speed in the freeze frame data ± 10 km/h (6 MPH) Engine coolant temperature (T) condition 7. 8. When the freeze frame data shows lower than 70 °C (158 °F), T should be lower than 70 °C (158 °F). When the freeze frame data shows higher than or equal to 70 °C (158 °F), T should be higher than or equal to 70 °C (158 °F). If it is difficult to start engine at step 6, the fuel injection system has a malfunction, too. Crank engine while depressing accelerator pedal. Revision: July 2006 EC-343 2006 Quest I J K L M DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION If engine starts, go to EC-349, "Diagnostic Procedure" . If engine does not start, remove spark plugs and check for fouling, etc. WITH GST 1. 2. 3. 4. 5. 6. 7. 8. a. b. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Disconnect mass air flow sensor harness connector. Then restart and run engine for at least 5 seconds at idle speed. Stop engine and reconnect mass air flow sensor harness connector. Select “Service $03” with GST. Make sure DTC P0102 is detected. Select “Service $04” with GST and erase the DTC P0102. Start engine again and let it idle for at least 10 minutes. Select “Service $07” with GST. The 1st trip DTC P0172 or P0175 should be detected at this stage, if a malfunction exists. If BBIA0327E so, go to EC-349, "Diagnostic Procedure" . NOTE: If 1st trip DTC is not detected during above procedure, performing the following procedure is advised. Turn ignition switch OFF and wait at least 10 seconds. Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for 10 minutes. Refer to the table below. Hold the accelerator pedal as steady as possible. The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following conditions should be satisfied at the same time. Engine speed Engine speed in the freeze frame data ± 400 rpm Vehicle speed Vehicle speed in the freeze frame data ± 10 km/h (6 MPH) Engine coolant temperature (T) condition When the freeze frame data shows lower than 70 °C (158 °F), T should be lower than 70 °C (158 °F). When the freeze frame data shows higher than or equal to 70 °C (158 °F), T should be higher than or equal to 70 °C (158 °F). 9. If it is difficult to start engine at step 7, the fuel injection system has a malfunction. 10. Crank engine while depressing accelerator pedal. If engine starts, go to EC-349, "Diagnostic Procedure" . If engine does not start, remove spark plugs and check for fouling, etc. Revision: July 2006 EC-344 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION Wiring Diagram EBS00R0Z A BANK 1 EC C D E F G H I J K L M BBWA2018E Revision: July 2006 EC-345 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed Approximately 2.6V Approximately 2.3V Approximately 2.3V BATTERY VOLTAGE [Engine is running] ● Warm-up condition ● Idle speed (11 - 14V) NOTE: The pulse cycle changes depending on rpm at idle 21 22 23 L/W R/Y R/B Fuel injector No. 5 Fuel injector No. 3 Fuel injector No. 1 SEC984C BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. SEC985C : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-346 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION BANK 2 A EC C D E F G H I J K L M BBWA2003E Revision: July 2006 EC-347 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed PBIB1584E BATTERY VOLTAGE [Engine is running] 40 V/W*1 Fuel injector No. 6 ● Warm-up condition ● Idle speed (11 - 14V) NOTE: The pulse cycle changes depending on rpm at idle SEC984C P/R*2 41 42 R/L R/W Fuel injector No. 4 Fuel injector No. 2 BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. SEC985C 57 58 W/R LG/R 76 O 77 LG Approximately 2.6V [Engine is running] A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed Approximately 2.3V Approximately 3.1V Approximately 2.3V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-348 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION Diagnostic Procedure EBS00R10 1. CHECK EXHAUST GAS LEAK 1. 2. A Start engine and run it at idle. Listen for an exhaust gas leak before three way catalyst (manifold). EC C D E PBIB1216E OK or NG OK >> GO TO 2. NG >> Repair or replace. F 2. CHECK FOR INTAKE AIR LEAK G Listen for an intake air leak after the mass air flow sensor. OK or NG OK >> GO TO 3. NG >> Repair or replace. H I J K L M Revision: July 2006 EC-349 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION 3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect corresponding A/F sensor 1 harness connector (1) (2). BBIA0656E : Vehicle front 3. 4. 3. Intake manifold collector Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank 1 Bank 2 Continuity should exist. 5. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Bank 1 Bank 2 A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 Continuity should not exist. 6. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-350 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION 4. CHECK FUEL PRESSURE 1. 2. A Release fuel pressure to zero. Refer to EC-84, "FUEL PRESSURE RELEASE" . Install fuel pressure gauge and check fuel pressure. Refer to EC-85, "FUEL PRESSURE CHECK" . EC At idling: 350 kPa (3.57 kg/cm2 , 51 psi) OK or NG OK (With CONSULT-II)>>GO TO 6. OK (Without CONSULT-II)>>GO TO 7. NG >> GO TO 5. C D 5. DETECT MALFUNCTIONING PART Check the following. ● Fuel pump and circuit (Refer to, EC-692, "FUEL PUMP" .) ● Fuel pressure regulator (Refer to EC-85, "FUEL PRESSURE CHECK" .) E F >> Repair or replace. 6. CHECK MASS AIR FLOW SENSOR G With CONSULT-II 1. Install all removed parts. 2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II. 2.0 - 6.0 g·m/sec: 7.0 - 20.0 g·m/sec: H at idling at 2,500 rpm I OK or NG OK >> GO TO 8. NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or ground. Refer to EC-197, "DTC P0101 MAF SENSOR" . J 7. CHECK MASS AIR FLOW SENSOR K With GST 1. Install all removed parts. 2. Check mass air flow sensor signal in Service $01 with GST. L 2.0 - 6.0 g·m/sec: 7.0 - 20.0 g·m/sec: at idling at 2,500 rpm M OK or NG OK (P0172)>>GO TO 9. OK (P0175)>>GO TO 11. NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or ground. Refer to EC-197, "DTC P0101 MAF SENSOR" . Revision: July 2006 EC-351 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION 8. CHECK FUNCTION OF FUEL INJECTOR With CONSULT-II Start engine. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II. 3. Make sure that each circuit produces a momentary engine speed drop. 1. 2. PBIB0133E OK or NG OK >> GO TO 12. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . Revision: July 2006 EC-352 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION 9. CHECK FUNCTION OF FUEL INJECTOR-I 1. 2. 3. – – A Without CONSULT-II Stop engine. Disconnect harness connector F44 (2), F101 (3) Turn ignition switch ON. EC : Vehicle front 1: Intake manifold collector C D E BBIA0657E 4. Check voltage between harness connector F44 terminal 5 and ground with CONSULT-II or tester. F Voltage: Battery voltage 5. 6. 7. G Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between harness connector F44 terminal and ECM terminal as follows. Refer to Wiring Diagram. Cylinder Harness connector F44 terminal ECM terminal 1 6 23 3 2 22 5 1 21 H PBIB2323E I J Continuity should exist. K 8. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 10. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . L 10. CHECK FUNCTION OF FUEL INJECTOR-II M Provide battery voltage between harness connector F101 as follows and then interrupt it. Listen to each fuel injector operating sound. Cylinder Harness connector F101 terminal (+) (–) 1 5 6 3 5 2 5 5 1 Operating sound should exist. PBIB2324E OK or NG OK >> GO TO 12. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . Revision: July 2006 EC-353 2006 Quest DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION 11. CHECK FUNCTION OF FUEL INJECTOR 1. 2. Start engine. Listen to fuel injectors No.2, No.4, No.6 operating sound. Clicking noise should exist. OK or NG OK >> GO TO 12. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . PBIB1986E 12. CHECK FUEL INJECTOR 1. Remove fuel injector assembly. Refer to EM-39, "FUEL INJECTOR AND FUEL TUBE" . Keep fuel hose and all fuel injectors connected to fuel injector gallery. 2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle. 3. Disconnect all fuel injector harness connectors. 4. Disconnect all ignition coil harness connectors. 5. Prepare pans or saucers under each fuel injectors. 6. Crank engine for about 3 seconds. Make sure fuel does not drip from fuel injector. OK or NG OK (Does not drip.)>>GO TO 13. NG (Drips.)>>Replace the fuel injectors from which fuel is dripping. Always replace O-ring with new one. 13. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-354 2006 Quest DTC P0181 FTT SENSOR DTC P0181 FTT SENSOR Component Description PFP:22630 A EBS00R11 The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases. EC C D BBIA0081E E Fluid temperature °C (°F) Voltage* V Resistance kΩ 20 (68) 3.5 2.3 - 2.7 50 (122) 2.2 0.79 - 0.90 F G *: This data is reference value and is measured between ECM terminal 107 (Fuel tank temperature sensor) and ground. H CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. SEF012P I On Board Diagnosis Logic DTC No. P0181 0181 Trouble diagnosis name Fuel tank temperature sensor circuit range/ performance EBS00R12 DTC detecting condition Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from engine coolant temperature sensor and intake air temperature sensor. DTC Confirmation Procedure J Possible cause ● Harness or connectors (The sensor circuit is open or shorted) ● Fuel tank temperature sensor K EBS00R13 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. M WITH CONSULT-II 1. 2. 3. 4. 5. 6. 7. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Wait at least 10 seconds. If the result is NG, go to EC-358, "Diagnostic Procedure" . If the result is OK, go to following step. Check “COOLAN TEMP/S” value. If “COOLAN TEMP/S” is less than 60°C (140°F), the result will be OK. If “COOLAN TEMP/S” is above 60°C (140°F), go to the following step. Cool engine down until “COOLAN TEMP/S” is less than 60°C (140°F). Wait at least 10 seconds. If 1st trip DTC is detected, go to EC-358, "Diagnostic Procedure" . Revision: July 2006 L EC-355 SEF174Y 2006 Quest DTC P0181 FTT SENSOR WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-356 2006 Quest DTC P0181 FTT SENSOR Wiring Diagram EBS00R14 A EC C D E F G H I J K L M BBWA2025E Revision: July 2006 EC-357 2006 Quest DTC P0181 FTT SENSOR Diagnostic Procedure EBS00R15 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-358 2006 Quest DTC P0181 FTT SENSOR 2. CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT 1. 2. A Disconnect “fuel level sensor unit and fuel pump” harness connector. Turn ignition switch ON. EC C D BBIA0236E 3. Check voltage between “fuel level sensor unit and fuel pump” terminal 4 and ground with CONSULT-II or tester. E Voltage: Approximately 5V F OK or NG OK >> GO TO 4. NG >> GO TO 3. G PBIB0932E H 3. DETECT MALFUNCTIONING PART I Check the following. ● Harness connectors B106, E138 ● Harness connectors B148, B251 ● Harness for open or short between ECM and “fuel level sensor unit and fuel pump” J >> Repair harness or connector. K 4. CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 6. NG >> GO TO 5. Revision: July 2006 EC-359 2006 Quest L M DTC P0181 FTT SENSOR 5. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness connectors E19, F33 ● Harness connectors B106, E138 ● Harness connectors B148, B251 ● Harness for open or short between “fuel level sensor unit and fuel pump” and ECM. ● Harness for open or short between “fuel level sensor unit and fuel pump” and TCM. >> Repair open circuit or short to ground or short to power in harness or connector. 6. CHECK FUEL TANK TEMPERATURE SENSOR Refer to EC-360, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Replace “fuel level sensor unit and fuel pump”. 7. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R16 FUEL TANK TEMPERATURE SENSOR 1. 2. Remove “fuel level sensor unit and fuel pump”. Check resistance between “fuel level sensor unit and fuel pump” terminals 4 and 5 by heating with hot water or heat gun as shown in the figure. Temperature °C (°F) Resistance kΩ 20 (68) 2.3 - 2.7 50 (122) 0.79 - 0.90 PBIB0931E Removal and Installation EBS00R17 FUEL TANK TEMPERATURE SENSOR Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Revision: July 2006 EC-360 2006 Quest DTC P0182, P0183 FTT SENSOR DTC P0182, P0183 FTT SENSOR Component Description PFP:22630 A EBS00R18 The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases. EC C D BBIA0081E E Fluid temperature °C (°F) Voltage* V Resistance kΩ 20 (68) 3.5 2.3 - 2.7 50 (122) 2.2 0.79 - 0.90 F G *: This data is reference value and is measured between ECM terminal 107 (Fuel tank temperature sensor) and ground. H CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. SEF012P I On Board Diagnosis Logic DTC No. Trouble diagnosis name EBS00R19 DTC detecting condition J Possible cause P0182 0182 Fuel tank temperature sensor circuit low input An excessively low voltage from the sensor is sent to ECM. ● Harness or connectors (The sensor circuit is open or shorted.) P0183 0183 Fuel tank temperature sensor circuit high input An excessively high voltage from the sensor is sent to ECM. ● Fuel tank temperature sensor DTC Confirmation Procedure EBS00R1A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Wait at least 5 seconds. If 1st trip DTC is detected, go to EC-363, "Diagnostic Procedure" . SEF174Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-361 2006 Quest K L M DTC P0182, P0183 FTT SENSOR Wiring Diagram EBS00R1B BBWA2025E Revision: July 2006 EC-362 2006 Quest DTC P0182, P0183 FTT SENSOR Diagnostic Procedure EBS00R1C 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-363 2006 Quest DTC P0182, P0183 FTT SENSOR 2. CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT 1. 2. Disconnect “fuel level sensor unit and fuel pump” harness connector. Turn ignition switch ON. BBIA0236E 3. Check voltage between “fuel level sensor unit and fuel pump” terminal 4 and ground with CONSULT-II or tester. Voltage: Approximately 5V OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB0932E 3. DETECT MALFUNCTIONING PART Check the following. Harness connectors B106, E138 ● Harness connectors B148, B251 ● Harness for open or short between ECM and “fuel level sensor unit and fuel pump” ● >> Repair harness or connector. 4. CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 6. NG >> GO TO 5. Revision: July 2006 EC-364 2006 Quest DTC P0182, P0183 FTT SENSOR 5. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors E5, F14 ● Harness connectors E19, F33 ● Harness connectors B106, E138 ● Harness connectors B148, B251 ● Harness for open or short between “fuel level sensor unit and fuel pump” and ECM. ● Harness for open or short between “fuel level sensor unit and fuel pump” and TCM. EC C D >> Repair open circuit or short to ground or short to power in harness or connector. 6. CHECK FUEL TANK TEMPERATURE SENSOR E Refer to EC-365, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Replace “fuel level sensor unit and fuel pump”. F 7. CHECK INTERMITTENT INCIDENT G Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . H >> INSPECTION END Component Inspection EBS00R1D I FUEL TANK TEMPERATURE SENSOR 1. 2. Remove “fuel level sensor unit and fuel pump”. Check resistance between “fuel level sensor unit and fuel pump” terminals 4 and 5 by heating with hot water or heat gun as shown in the figure. Temperature °C (°F) Resistance kΩ 20 (68) 2.3 - 2.7 50 (122) 0.79 - 0.90 J K L PBIB0931E Removal and Installation EBS00R1E FUEL TANK TEMPERATURE SENSOR Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Revision: July 2006 EC-365 2006 Quest M DTC P0222, P0223 TP SENSOR DTC P0222, P0223 TP SENSOR Component Description PFP:16119 EBS00R1F Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition. PBIB0145E CONSULT-II Reference Value in Data Monitor Mode EBS00R1G Specification data are reference values. MONITOR ITEM THRTL SEN 1 THRTL SEN 2* CONDITION SPECIFICATION ● Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released More than 0.36V ● Shift lever: D Accelerator pedal: Fully depressed Less than 4.75V *: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal. On Board Diagnosis Logic EBS00R1H These self-diagnoses have the one trip detection logic. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0222 0222 Throttle position sensor 1 circuit low input An excessively low voltage from the TP sensor 1 is sent to ECM. ● Harness or connectors (TP sensor 1 circuit is open or shorted.) (APP sensor 2 circuit is shorted.) P0223 0223 Throttle position sensor 1 circuit high input An excessively high voltage from the TP sensor 1 is sent to ECM. ● Electric throttle control actuator (TP sensor 1) ● Accelerator pedal position sensor (APP sensor 2) FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode an the MIL lights up. Engine operation condition in fail-safe mode The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. Revision: July 2006 EC-366 2006 Quest DTC P0222, P0223 TP SENSOR DTC Confirmation Procedure EBS00R1I A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. C Turn ignition switch ON. Select DATA MONITOR mode with CONSULT-II. Start engine and let it idle for 1 second. If DTC is detected, go to EC-370, "Diagnostic Procedure" . D E F SEF058Y WITH GST G Follow the procedure “WITH CONSULT-II” above. H I J K L M Revision: July 2006 EC-367 2006 Quest DTC P0222, P0223 TP SENSOR Wiring Diagram EBS00R1J BBWA1610E Revision: July 2006 EC-368 2006 Quest DTC P0222, P0223 TP SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 47 EC WIRE COLOR R A ITEM Throttle position sensor power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) C Approximately 5V [Ignition switch: ON] 50 Y ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released Throttle position sensor 1 D More than 0.36V E [Ignition switch: ON] ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed Less than 4.75V F [Engine is running] 66 G Throttle position sensor ground ● Warm-up condition ● Idle speed Approximately 0V G [Ignition switch: ON] 69 L ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released Throttle position sensor 2 H Less than 4.75V [Ignition switch: ON] 91 O APP sensor 2 power supply ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed [Ignition switch: ON] I More than 0.36V J Approximately 5V K L M Revision: July 2006 EC-369 2006 Quest DTC P0222, P0223 TP SENSOR Diagnostic Procedure EBS00R1K 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-370 2006 Quest DTC P0222, P0223 TP SENSOR 2. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I 1. 2. A Disconnect electric throttle control actuator harness connector. Turn ignition switch ON. EC C D BBIA0318E 3. Check voltage between electric throttle control actuator terminal 1 and ground with CONSULT-II or tester. E Voltage: Approximately 5V F OK or NG OK >> GO TO 7. NG >> GO TO 3. G PBIB0082E H 3. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-II 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between electric throttle control actuator terminal 1 and ECM terminal 47. Refer to Wiring Diagram. I J Continuity should exist. K OK or NG OK >> GO TO 4. NG >> Repair open circuit. L 4. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-III Check harness for short to power and short to ground, between the following terminals. ECM terminal Sensor terminal M Reference Wiring Diagram 47 Electric throttle control actuator terminal 1 EC-368 91 APP sensor terminal 6 EC-634 OK or NG OK >> GO TO 5. NG >> Repair short to ground or short to power in harness or connectors. 5. CHECK APP SENSOR Refer to EC-639, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 6. Revision: July 2006 EC-371 2006 Quest DTC P0222, P0223 TP SENSOR 6. REPLACE ACCELERATOR PEDAL ASSEMBLY 1. 2. 3. 4. Replace accelerator pedal assembly. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 7. CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 66 and electric throttle control actuator terminal 5. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 8. CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 4. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK THROTTLE POSITION SENSOR Refer to EC-373, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 10. 10. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 11. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-372 2006 Quest DTC P0222, P0223 TP SENSOR Component Inspection EBS00R1L A THROTTLE POSITION SENSOR 1. 2. 3. 4. 5. Reconnect all harness connectors disconnected. Perform EC-82, "Throttle Valve Closed Position Learning" . Turn ignition switch ON. Set shift lever to D position. Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions. Terminal Accelerator pedal Voltage 50 (Throttle position sensor 1) Fully released More than 0.36V Fully depressed Less than 4.75V Fully released Less than 4.75V Fully depressed More than 0.36V 69 (Throttle position sensor 2) 6. 7. 8. If NG, replace electric throttle control actuator and go to the next step. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . Removal and Installation EC C D E PBIB1608E F G EBS00R1M ELECTRIC THROTTLE CONTROL ACTUATOR H Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . I J K L M Revision: July 2006 EC-373 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE PFP:00000 On Board Diagnosis Logic EBS00R1N When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring. Sensor Crankshaft position sensor (POS) Input Signal to ECM Engine speed ECM function On board diagnosis of misfire The misfire detection logic consists of the following two conditions. 1. One Trip Detection Logic (Three Way Catalyst Damage) On the first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to overheating, the MIL will blink. When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions for a change. When the misfire condition decreases to a level that will not damage the TWC, the MIL will turn off. If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink. When the misfire condition decreases to a level that will not damage the TWC, the MIL will remain on. If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again. 2. Two Trip Detection Logic (Exhaust quality deterioration) For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only light when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sensor signal every 1,000 engine revolutions. A misfire malfunction can be detected on any one cylinder or on multiple cylinders. DTC No. Trouble diagnosis name DTC detecting condition P0300 0300 Multiple cylinder misfire detected P0301 0301 No.1 cylinder misfire detected No. 1 cylinder misfires. P0302 0302 No. 2 cylinder misfire detected No. 2 cylinder misfires. P0303 0303 No. 3 cylinder misfire detected No. 3 cylinder misfires. P0304 0304 No. 4 cylinder misfire detected No. 4 cylinder misfires. P0305 0305 No. 5 cylinder misfire detected No. 5 cylinder misfires. P0306 0306 No. 6 cylinder misfire detected No. 6 cylinder misfires. Multiple cylinder misfire. DTC Confirmation Procedure Possible cause ● Improper spark plug ● Insufficient compression ● Incorrect fuel pressure ● The fuel injector circuit is open or shorted ● Fuel injector ● Intake air leak ● The ignition signal circuit is open or shorted ● Lack of fuel ● Signal plate ● Air fuel ratio (A/F) sensor 1 ● Incorrect PCV hose connection EBS00R1O CAUTION: Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driving. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. Revision: July 2006 EC-374 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE WITH CONSULT-II 1. 2. 3. 4. 5. a. b. A Turn ignition switch ON, and select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to normal operating temperature. EC Turn ignition switch OFF and wait at least 10 seconds. Restart engine and let it idle for about 15 minutes. If 1st trip DTC is detected, go to EC-375, "Diagnostic Procedure" C . NOTE: If 1st trip DTC is not detected during above procedure, performD ing the following procedure is advised. PBIB0164E Turn ignition switch OFF and wait at least 10 seconds. Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for a certain E time. Refer to the table below. Hold the accelerator pedal as steady as possible. The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following conditions should be satisfied at the same time. Engine speed Engine speed in the freeze frame data ± 400 rpm Vehicle speed Vehicle speed in the freeze frame data ± 10 km/h (6 MPH) Engine coolant temperature (T) condition F G When the freeze frame data shows lower than 70 °C (158 °F), T should be lower than 70 °C (158 °F). H When the freeze frame data shows higher than or equal to 70 °C (158 °F), T should be higher than or equal to 70 °C (158 °F). I The time to driving varies according to the engine speed in the freeze frame data. Engine speed Time J Around 1,000 rpm Approximately 10 minutes Around 2,000 rpm Approximately 5 minutes More than 3,000 rpm Approximately 3.5 minutes K WITH GST Follow the procedure “WITH CONSULT-II” above. L Diagnostic Procedure EBS00R1P 1. CHECK FOR INTAKE AIR LEAK AND PCV HOSE M 1. Start engine and run it at idle speed. 2. Listen for the sound of the intake air leak. 3. Check PCV hose connection. OK or NG OK >> GO TO 2. NG >> Discover air leak location and repair. 2. CHECK FOR EXHAUST SYSTEM CLOGGING Stop engine and visually check exhaust tube, three way catalyst and muffler for dents. OK or NG OK (With CONSULT-II)>>GO TO 3. OK (Without CONSULT-II)>>GO TO 4. NG >> Repair or replace it. Revision: July 2006 EC-375 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE 3. PERFORM POWER BALANCE TEST 1. 2. With CONSULT-II Perform “POWER BALANCE” in “ACTIVE TEST” mode. Is there any cylinder which does not produce a momentary engine speed drop? PBIB0133E Yes or No Yes >> GO TO 4. No >> GO TO 11. 4. CHECK FUNCTION OF FUEL INJECTOR-I 1. 2. 3. Stop engine. Disconnect harness connector F44 (2), F101 (3). Turn ignition switch ON. – : Vehicle front 1: Intake manifold collector – BBIA0657E 4. Check voltage between harness connector F44 terminal 5 and ground with CONSULT-II or tester. Voltage: Battery voltage 5. 6. 7. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between harness connector F44 terminal and ECM terminal as follows. Refer to Wiring Diagram. Cylinder Harness connector F44 terminal ECM terminal 1 6 23 3 2 22 5 1 21 PBIB2323E Continuity should exist. 8. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . Revision: July 2006 EC-376 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE 5. CHECK FUNCTION OF FUEL INJECTOR-II A Provide battery voltage between harness connector F101 as follows and then interrupt it. Listen to each fuel injector operating sound. EC Harness connector F101 terminal Cylinder (+) (–) 1 5 6 3 5 2 5 5 1 C D Operating sound should exist. PBIB2324E OK or NG OK >> GO TO 6. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . 6. CHECK FUNCTION OF FUEL INJECTOR-III 1. 2. 3. E F Reconnect all harness connector disconnected. Start engine. Listen to fuel injectors No. 2, No. 4, No.6 operating sound. G Clicking noise should exist. H OK or NG OK >> GO TO 7. NG >> Perform trouble diagnosis for FUEL INJECTOR CIRCUIT, refer to EC-684, "FUEL INJECTOR" . I J PBIB1986E K L M Revision: July 2006 EC-377 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE 7. CHECK FUNCTION OF IGNITION COIL-I CAUTION: Do the following procedure in the place where ventilation is good without the combustible. 1. Turn ignition switch OFF. 2. Remove fuel pump fuse in IPDM E/R to release fuel pressure. NOTE: Do not use CONSULT-II to release fuel pressure, or fuel pressure applies again during the following procedure. 3. Start engine. 4. After engine stalls, crank it two or three times to release all fuel pressure. 5. Turn ignition switch OFF. 6. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils. 7. Remove ignition coil and spark plug of the cylinder to be checked. 8. Crank engine for five seconds or more to remove combustion gas in the cylinder. 9. Connect spark plug and harness connector to ignition coil. 10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm between the edge of the spark plug and grounded metal portion as shown in the figure. 11. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded metal portion. BBIA0229E Spark should be generated. CAUTION: Do not approach to the spark plug and the ignition coil within 50cm. Be careful not to get an electrical shock PBIB2325E while checking, because the electrical discharge voltage becomes 20kV or more. ● It might cause to damage the ignition coil if the gap of more than 17 mm is taken. NOTE: When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning. OK or NG OK >> GO TO 11. NG >> GO TO 8. ● 8. CHECK FUNCTION OF IGNITION COIL-II 1. 2. 3. Turn ignition switch OFF. Disconnect spark plug and connect a known-good spark plug. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug and the grounded metal portion. Spark should be generated. OK or NG OK >> GO TO 9. NG >> Check ignition coil, power transistor and their circuits. Refer to EC-698, "IGNITION SIGNAL" . Revision: July 2006 EC-378 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE 9. CHECK SPARK PLUG A Check the initial spark plug for fouling, etc. OK or NG OK >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-20, "Changing Spark Plugs (Platinum - Tipped Type)" . NG >> 1. Repair or clean spark plug. 2. GO TO 10. EC C D SEF156I 10. CHECK FUNCTION OF IGNITION COIL-III 1. 2. E Reconnect the initial spark plugs. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug and the grounded portion. F Spark should be generated. OK or NG OK >> INSPECTION END NG >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-20, "Changing Spark Plugs (Platinum - Tipped Type)" . G H 11. CHECK COMPRESSION PRESSURE I Check compression pressure. Refer to EM-115, "CHECKING COMPRESSION PRESSURE" . OK or NG OK >> GO TO 12. NG >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets. J 12. CHECK FUEL PRESSURE 1. 2. 3. K Install all removed parts. Release fuel pressure to zero. Refer to EC-84, "FUEL PRESSURE RELEASE" . Install fuel pressure gauge and check fuel pressure. Refer to EC-85, "FUEL PRESSURE CHECK" . L At idle: Approx. 350 kPa (3.57 kg/cm2 , 51 psi) M OK or NG OK >> GO TO 14. NG >> GO TO 13. 13. DETECT MALFUNCTIONING PART Check the following. ● Fuel pump and circuit (Refer to EC-692, "FUEL PUMP" .) ● Fuel pressure regulator (Refer to EC-85, "FUEL PRESSURE CHECK" .) ● Fuel lines ● Fuel filter for clogging >> Repair or replace. Revision: July 2006 EC-379 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE 14. CHECK IGNITION TIMING Check the following items. Refer to EC-75, "Basic Inspection" . Items Specifications Target idle speed 4-speed A/T: 700 ± 50 rpm (in P or N position) 5-speed A/T: 675 ± 50 rpm (in P or N position) Ignition timing A/T: 15 ± 5° BTDC (in P or N position) OK or NG OK >> GO TO 15. NG >> Follow the EC-75, "Basic Inspection" . Revision: July 2006 EC-380 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE 15. CHECK A/F SENSOR 1 INPUT SIGNAL 1. 2. A Turn ignition switch OFF. Disconnect A/F sensor 1 harness connector (1) (2). EC C D BBIA0656E : 3. 4. Vehicle front 3. E Intake manifold collector F Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. G A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank 1 Bank 2 H I J Continuity should exist. 5. K Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. L Bank 1 Bank 2 A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 M Continuity should not exist. 6. Also check harness for short to power. OK or NG OK >> GO TO 16. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-381 2006 Quest DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MISFIRE 16. CHECK A/F SENSOR 1 HEATER Refer to EC-179, "Component Inspection" . OK or NG OK >> GO TO 17. NG >> Replace (malfunctioning) A/F sensor 1. 17. CHECK MASS AIR FLOW SENSOR With CONSULT-II Check mass air flow sensor signal in “DATA MONITOR” mode with CONSULT-II. 2.0 - 6.0 g·m/sec: 7.0 - 20.0 g·m/sec: at idling at 2,500 rpm With GST Check mass air flow sensor signal in Service $01 with GST. 2.0 - 6.0 g·m/sec: 7.0 - 20.0 g·m/sec: at idling at 2,500 rpm OK or NG OK >> GO TO 18. NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or ground. Refer to EC-197, "DTC P0101 MAF SENSOR" . 18. CHECK SYMPTOM MATRIX CHART Check items on the rough idle symptom in EC-97, "Symptom Matrix Chart" . OK or NG OK >> GO TO 19. NG >> Repair or replace. 19. ERASE THE 1ST TRIP DTC Some tests may cause a 1st trip DTC to be set. Erase the 1st trip DTC from the ECM memory after performing the tests. Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . >> GO TO 20. 20. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-382 2006 Quest DTC P0327, P0328 KS DTC P0327, P0328 KS Component Description PFP:22060 A EBS00R1Q The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a EC voltage signal and sent to the ECM. C D E BBIA0067E On Board Diagnosis Logic EBS00R1R F The MIL will not light up for these diagnoses. DTC No. Trouble diagnosis name DTC detected condition Possible cause G P0327 0327 Knock sensor circuit low input An excessively low voltage from the sensor is sent to ECM. ● Harness or connectors (The sensor circuit is open or shorted.) P0328 0328 Knock sensor circuit high input An excessively high voltage from the sensor is sent to ECM. ● Knock sensor DTC Confirmation Procedure H EBS00R1S NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. I J K Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and run it for at least 5 seconds at idle speed. If 1st trip DTC is detected, go to EC-385, "Diagnostic Procedure" . L M SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-383 2006 Quest DTC P0327, P0328 KS Wiring Diagram EBS00R1T BBWA1611E Revision: July 2006 EC-384 2006 Quest DTC P0327, P0328 KS Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 15 EC WIRE COLOR W ITEM Knock sensor CONDITION [Engine is running] ● Idle speed DATA (DC Voltage) C Approximately 2.5V Diagnostic Procedure EBS00R1U 1. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I 1. 2. 3. A Turn ignition switch OFF. Disconnect ECM harness connector. Check resistance between ECM terminal 15 and ground. Refer to Wiring Diagram. NOTE: It is necessary to use an ohmmeter which can measure more than 10 MΩ. D E F Resistance: Approximately 532 - 588 kΩ [at 20°C (68°F)] G 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 2. H 2. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II 1. I Disconnect knock sensor harness connector. J K L BBIA0067E 2. Check harness continuity between ECM terminal 15 and knock sensor terminal 1. Refer to Wiring Diagram. M Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> GO TO 3. 3. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F26, F301 ● Harness for open or short between ECM and knock sensor >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-385 2006 Quest DTC P0327, P0328 KS 4. CHECK KNOCK SENSOR Refer to EC-387, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Replace knock sensor. 5. CHECK GROUND CONNECTIONS Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 6. NG >> Repair or replace ground connections. 6. CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT 1. 2. Disconnect knock sensor harness connector. Check harness continuity between knock sensor terminal 2 and ground. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 8. NG >> GO TO 7. Revision: July 2006 EC-386 2006 Quest DTC P0327, P0328 KS 7. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors F26, F301 ● Harness connectors E5, F14 ● Harness for open or short between knock sensor and ground EC C >> Repair open circuit or short to power in harness or connectors. 8. CHECK INTERMITTENT INCIDENT D Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . E >> INSPECTION END Component Inspection EBS00R1V KNOCK SENSOR F Check resistance between knock sensor terminal 1 and ground. NOTE: It is necessary to use an ohmmeter which can measure more than 10 MΩ. G Resistance: Approximately 532 - 588 kΩ [at 20°C (68°F)] CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use only new ones. H I SEF227W Removal and Installation EBS00R1W KNOCK SENSOR J Refer to EM-138, "CYLINDER BLOCK" . K L M Revision: July 2006 EC-387 2006 Quest DTC P0335 CKP SENSOR (POS) DTC P0335 CKP SENSOR (POS) Component Description PFP:23731 EBS00R1X The crankshaft position sensor (POS) is located on the oil pan facing the gear teeth (cogs) of the signal plate. It detects the fluctuation of the engine revolution. The sensor consists of a permanent magnet and Hall IC. When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. Due to the changing magnetic field, the voltage from the sensor changes. The ECM receives the voltage signal and detects the fluctuation of the engine revolution. ECM receives the signals as shown in the figure. PBIB0562E PBIB2744E CONSULT-II Reference Value in Data Monitor Mode EBS00R1Y Specification data are reference values. MONITOR ITEM ENG SPEED ● CONDITION SPECIFICATION Run engine and compare CONSULT-II value with the tachometer indication. Almost the same speed as the tachometer indication On Board Diagnosis Logic DTC No. P0335 0335 Trouble diagnosis name Crankshaft position sensor (POS) circuit DTC detecting condition ● The crankshaft position sensor (POS) signal is not detected by the ECM during the first few seconds of engine cranking. ● The proper pulse signal from the crankshaft position sensor (POS) is not sent to ECM while the engine is running. ● Revision: July 2006 EBS00R1Z The crankshaft position sensor (POS) signal is not in the normal pattern during engine running. EC-388 Possible cause ● Harness or connectors (The sensor circuit is open or shorted) ● Crankshaft position sensor (POS) ● Signal plate 2006 Quest DTC P0335 CKP SENSOR (POS) DTC Confirmation Procedure EBS00R20 A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10.5V with ignition switch ON. C WITH CONSULT-II 1. 2. 3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed. If 1st trip DTC is detected, go to EC-392, "Diagnostic Procedure" . D E F SEF058Y WITH GST G Follow the procedure “WITH CONSULT-II” above. H I J K L M Revision: July 2006 EC-389 2006 Quest DTC P0335 CKP SENSOR (POS) Wiring Diagram EBS00R21 BBWA1612E Revision: July 2006 EC-390 2006 Quest DTC P0335 CKP SENSOR (POS) Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) C [Engine is running] ● Warm-up condition ● Idle speed Approximately 10V D NOTE: The pulse cycle changes depending on rpm at idle 13 W E PBIB1041E Crankshaft position sensor (POS) Approximately 10V F [Engine is running] ● Engine speed is 2,000 rpm. G PBIB1042E [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM For a few seconds after turning ignition switch OFF More than a few seconds after turning ignition switch OFF [Ignition switch: ON] H 0 - 1.5V I BATTERY VOLTAGE (11 - 14V) J BATTERY VOLTAGE (11 - 14V) K : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) L M Revision: July 2006 EC-391 2006 Quest DTC P0335 CKP SENSOR (POS) Diagnostic Procedure EBS00R22 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-392 2006 Quest DTC P0335 CKP SENSOR (POS) 2. CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT 1. A Disconnect crankshaft position (CKP) sensor (POS) harness connector. EC C D BBIA0333E 2. 3. E Turn ignition switch ON. Check voltage between CKP sensor (POS) terminal 1 (4A/T), 3 (5A/T) and ground with CONSULT-II or tester. F Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. G H PBIB2565E 3. DETECT MALFUNCTIONING PART I Check the following. ● Harness connectors E5, F14 ● Harness for open or short between crankshaft position sensor (POS) and ECM ● Harness for open or short between crankshaft position sensor (POS) and IPDM E/R J K >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT L 1. 2. M Turn ignition switch OFF. Check harness continuity between CKP sensor (POS) terminal 3 (4A/T), 1 (5A/T) and ground. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 6. NG >> GO TO 5. 5. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness for open or short between crankshaft position sensor (POS) and ground >> Repair open circuit or short to power in harness or connectors. Revision: July 2006 EC-393 2006 Quest DTC P0335 CKP SENSOR (POS) 6. CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. Disconnect ECM harness connector. Check harness continuity between ECM terminal 13 and CKP sensor (POS) terminal 2. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK CRANKSHAFT POSITION SENSOR (POS) Refer to EC-395, "Component Inspection" . OK or NG OK >> GO TO 8. NG >> Replace crankshaft position sensor (POS). 8. CHECK GEAR TOOTH Visually check for chipping signal plate gear tooth. OK or NG OK >> GO TO 9. NG >> Replace the signal plate. 9. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-394 2006 Quest DTC P0335 CKP SENSOR (POS) Component Inspection EBS00R23 A CRANKSHAFT POSITION SENSOR (POS) 1. 2. 3. 4. Loosen the fixing bolt of the sensor. Disconnect crankshaft position sensor (POS) harness connector. Remove the sensor. Visually check the sensor for chipping. EC C D E PBIB0563E 5. F Check resistance as shown in the figure. Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)] G 1 (+) - 2 (-) 1 (+) - 3 (-) Except 0 or ∞ 2 (+) - 3 (-) H I PBIB0564E Removal and Installation EBS00R24 CRANKSHAFT POSITION SENSOR (POS) J Refer to EM-29, "OIL PAN AND OIL STRAINER" . K L M Revision: July 2006 EC-395 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) DTC P0340, P0345 CMP SENSOR (PHASE) Component Description PFP:23731 EBS00R25 The camshaft position sensor (PHASE) senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor (PHASE) senses the piston position. When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor (PHASE) provides various controls of engine parts instead, utilizing timing of cylinder identification signals. The sensor consists of a permanent magnet and Hall IC. When engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. Due to the changing magnetic field, the voltage from the sensor changes. ECM receives the signals as shown in the figure. PBIB0562E PBIB2744E On Board Diagnosis Logic DTC No. Trouble diagnosis name P0340 0340 (Bank 1) P0345 0345 (Bank 2) EBS00R26 DTC detecting condition ● Camshaft position sensor (PHASE) circuit The cylinder No. signal is not sent to ECM for the first few seconds during engine cranking. Possible cause ● Harness or connectors (The sensor circuit is open or shorted) ● Camshaft position sensor (PHASE) ● Camshaft (Intake) ● The cylinder No. signal is not sent to ECM during engine running. ● Starter motor (Refer to SC-10, "STARTING SYSTEM" .) ● The cylinder No. signal is not in the normal pattern during engine running. ● Starting system circuit (Refer to SC-10, "STARTING SYSTEM" .) ● Dead (Weak) battery DTC Confirmation Procedure EBS00R27 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10.5V with ignition switch ON. WITH CONSULT-II 1. Turn ignition switch ON. Revision: July 2006 EC-396 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) 2. 3. 4. 5. 6. Select “DATA MONITOR” mode with CONSULT-II. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed. If 1st trip DTC is detected, go to EC-401, "Diagnostic Procedure" . If 1st trip DTC is not detected, go to next step. Maintaining engine speed at more than 800 rpm for at least 5 seconds. If 1st trip DTC is detected, go to EC-401, "Diagnostic Procedure" . A EC C SEF058Y D WITH GST Follow the procedure “WITH CONSULT-II” above. E F G H I J K L M Revision: July 2006 EC-397 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) Wiring Diagram EBS00R28 BANK 1 BBWA2004E Revision: July 2006 EC-398 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) C [Engine is running] ● Warm-up condition ● Idle speed 1.0 - 4.0V D NOTE: The pulse cycle changes depending on rpm at idle 33 Y E PBIB1039E Camshaft position sensor (PHASE) (Bank 1) 1.0 - 4.0V F [Engine is running] ● Engine speed is 2,000 rpm. G PBIB1040E [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM For a few seconds after turning ignition switch OFF More than a few seconds after turning ignition switch OFF [Ignition switch: ON] H 0 - 1.5V I BATTERY VOLTAGE (11 - 14V) J BATTERY VOLTAGE (11 - 14V) K : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) L M Revision: July 2006 EC-399 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) BANK 2 BBWA2005E Revision: July 2006 EC-400 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) C [Engine is running] ● Warm-up condition ● Idle speed 1.0 - 4.0V D NOTE: The pulse cycle changes depending on rpm at idle 14 W E PBIB1039E Camshaft position sensor (PHASE) (Bank 2) 1.0 - 4.0V F [Engine is running] ● Engine speed is 2,000 rpm. G PBIB1040E [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM For a few seconds after turning ignition switch OFF More than a few seconds after turning ignition switch OFF [Ignition switch: ON] H 0 - 1.5V I BATTERY VOLTAGE (11 - 14V) J BATTERY VOLTAGE (11 - 14V) K : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Diagnostic Procedure EBS00R29 1. CHECK STARTING SYSTEM L Turn ignition switch to START position. M Does the engine turn over? Does the starter motor operate? Yes or No Yes >> GO TO 2. No >> Check starting system. (Refer to SC-10, "STARTING SYSTEM" .) Revision: July 2006 EC-401 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) 2. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 3. NG >> Repair or replace ground connections. Revision: July 2006 EC-402 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) 3. CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT 1. A Disconnect camshaft position (CMP) sensor (PHASE) harness connector. EC C D BBIA0239E 2. 3. E Turn ignition switch ON. Check voltage between CMP sensor (PHASE) terminal 3 and ground with CONSULT-II or tester. F Voltage: Battery voltage OK or NG OK >> GO TO 5. NG >> GO TO 4. G H SEF481Y 4. DETECT MALFUNCTIONING PART I Check the following. ● Harness connectors E5, F14 ● Harness connectors F26, F301 ● Harness for open or short between camshaft position sensor (PHASE) and ECM ● Harness for open or short between camshaft position sensor (PHASE) and IPDM E/R J K >> Repair open circuit or short to ground or short to power in harness or connectors. L 5. CHECK CMP SENSOR (PHASE) GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. Turn ignition switch OFF. Check harness continuity between CMP sensor (PHASE) terminal 1 and ground. M Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. 6. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness connectors F26, F301 ● Harness for open or short between CMP sensor (PHASE) and ground >> Repair open circuit or short to power in harness or connectors. Revision: July 2006 EC-403 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) 7. CHECK CMP SENSOR (PHASE) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. Disconnect ECM harness connector. Check harness continuity between ECM terminal 33 (bank 1) or 14 (bank2) and CMP sensor (PHASE) terminal 2. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> GO TO 8. 8. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F26, F301 ● Harness for open or short between camshaft position sensor (PHASE) and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK CAMSHAFT POSITION SENSOR (PHASE) Refer to EC-405, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace camshaft position sensor (PHASE). 10. CHECK CAMSHAFT (INTAKE) Check the following. ● Accumulation of debris to the signal plate of camshaft rear end ● Chipping signal plate of camshaft rear end OK or NG OK >> GO TO 11. NG >> Remove debris and clean the signal plate of camshaft rear end or replace camshaft. SEC905C 11. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-404 2006 Quest DTC P0340, P0345 CMP SENSOR (PHASE) Component Inspection EBS00R2A A CAMSHAFT POSITION SENSOR (PHASE) 1. 2. 3. 4. Loosen the fixing bolt of the sensor. Disconnect camshaft position sensor (PHASE) harness connector. Remove the sensor. Visually check the sensor for chipping. EC C D E PBIB0563E 5. F Check resistance as shown in the figure. Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)] G 1 (+) - 2 (-) 1 (+) - 3 (-) Except 0 or ∞ 2 (+) - 3 (-) H I PBIB0564E Removal and Installation EBS00R2B CAMSHAFT POSITION SENSOR (PHASE) J Refer to EM-97, "CAMSHAFT" . K L M Revision: July 2006 EC-405 2006 Quest DTC P0400 EGR FUNCTION DTC P0400 EGR FUNCTION Description PFP:14710 EBS00R2C SYSTEM DESCRIPTION Sensor Camshaft position sensor (PHASE) Input Signal to ECM Crankshaft position sensor (POS) Engine speed*2 Piston position Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Park/neutral position (PNP) switch Gear position voltage*2 Battery Battery Air conditioner switch Air conditioner operation *1 Power steering pressure sensor Power steering operation Electrical load Electrical load signal *1 Wheel sensor Vehicle speed *1 TCM Gear position, shifting signal *1 ECM function EGR volume control Actuator EGR volume control valve *1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage. This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. The EGR volume control valve remains closed under the following conditions. ● Engine stopped ● Engine starting ● Engine idling ● Low engine coolant temperature ● Excessively high engine coolant temperature ● High engine speed ● Wide open throttle ● Low battery voltage PBIB1843E Revision: July 2006 EC-406 2006 Quest DTC P0400 EGR FUNCTION COMPONENT DESCRIPTION EGR volume control valve A The EGR volume control valve uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the ECM. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECM does not issue the pulse signal. A certain voltage signal is issued so that the valve remains at that particular opening. EC C D SEF552W EGR Temperature Sensor E The EGR temperature sensor detects temperature changes in the EGR passageway. When the EGR volume control valve opens, hot exhaust gases flow, and the temperature in the passageway changes. The EGR temperature sensor is a thermistor that modifies a voltage signal sent from the ECM. This modified signal then returns to the ECM as an input signal. As the temperature increases, EGR temperature sensor resistance decreases. This sensor is not directly used to control the engine system. It is used only for the on board diagnosis. F G H SEF599K I EGR temperature °C (°F) Voltage* V Resistance MΩ 0 (32) 4.59 0.73 - 0.88 50 (122) 2.32 0.074 - 0.082 100 (212) 0.62 0.011 - 0.014 J K *: This data is reference value and is measured between ECM terminal 54 (EGR temperature sensor) and ground. L CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the ECM's transistor. Use a ground other than ECM terminals, such as the ground. When EGR system is operating. Voltage: 0 - 1.5V M SEF068X Revision: July 2006 EC-407 2006 Quest DTC P0400 EGR FUNCTION CONSULT-II Reference Value in Data Monitor Mode EBS00R2D Specification data are reference values. MONITOR ITEM EGR TEMP SEN EGR VOL CON/V CONDITION ● Engine: After warming up ● Engine: After warming up ● Air conditioner switch: OFF ● Shift lever: P or N ● No load SPECIFICATION Less than 4.5V Idle 0 step Revving engine up to 3,000 rpm quickly 10 - 55 step On Board Diagnosis Logic EBS00R2E If the absence of EGR flow is detected by EGR temperature sensor under the condition that calls for EGR, a low-flow malfunction is diagnosed. DTC No. P0400 0400 Trouble diagnosis name EGR function (Close) DTC detecting condition No EGR flow is detected under the condition that calls for EGR. DTC Confirmation Procedure Possible cause ● Harness or connectors (The EGR volume control valve circuit is open or shorted.) ● EGR volume control valve stuck closed ● Dead (Weak) battery ● EGR passage clogged ● EGR temperature sensor and circuit ● Exhaust gas leaks EBS00R2F CAUTION: Always drive vehicle at a safe speed. NOTE: ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 5 seconds before conducting the next test. ● P0400 will not be displayed at “SELF-DIAG RESULTS” mode with CONSULT-II even though DTC work support test result is NG. TESTING CONDITION: ● Before performing the following procedure, confirm battery voltage is more than 10V at idle, then stop engine immediately. ● For best results, perform the test at a temperature of 5°C (41°F) or higher. WITH CONSULT-II 1. 2. 3. 4. 5. 6. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. Check “COOLAN TEMP/S” in “DATA MONITOR” mode with CONSULT-II. Confirm “COOLAN TEMP/S” value is within the range listed below. COOLAN TEMP/S: Less than 40°C (104°F) If the value is out of range, park the vehicle in a cool place and allow the engine temperature to stabilize. Do not attempt to lower the engine coolant temperature with a fan or means other than ambient air. Doing so may produce an inaccurate diagnostic result. Start engine and let it idle monitoring “COOLAN TEMP/S” value. SEF013Y When the “COOLAN TEMP/S” value reaches 70°C (158°F), immediately go to the next step. Select “EGR SYSTEM P0400” of “EGR SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II. Touch “START”. Accelerate vehicle to a speed of 40 km/h (25 MPH) once and then stop vehicle with engine running. If “COMPLETED” appears on CONSULT-II screen, go to step 8. Revision: July 2006 EC-408 2006 Quest DTC P0400 EGR FUNCTION 7. If “COMPLETED” does not appear on CONSULT-II screen, go to the following step. When the following conditions are met, “TESTING” will be displayed on the CONSULT-II screen. Maintain the conditions until “TESTING” changes to “COMPLETED”. (It will take approximately 30 seconds or more.) ENG SPEED 1,200 - 2,800 rpm VHCL SPEED SE More than 10 km/h (6 MPH) B/FUEL SCHDL 4 - 9 msec Shift lever Suitable position 8. A EC C SEF845Y If “TESTING” is not displayed after 5 minutes, retry from step 2. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC411, "Diagnostic Procedure" . D E WITH GST 1. 2. 3. 4. 5. 6. 7. 8. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. Check engine coolant temperature in “Service $01” with GST. Engine coolant temperature: Less than 40°C (104°F) If the value is out of range, park the vehicle in a cool place and allow the engine temperature to stabilize. Do not attempt to lower the coolant temperature with a fan or means other than ambient air. Doing so may produce an inaccurate diagnostic result. Start engine and let it idle monitoring the engine coolant temperature value. When the engine coolant temperature reaches 70°C (158°F), immediately go to the next step. Maintain the following conditions for at least 1 minute. Engine speed: 1,200 - 2,800 rpm Vehicle speed: More than 10 km/h (6 MPH) Shift lever: Suitable position Stop vehicle. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. Select “Service $07” with GST. If 1st trip DTC is detected, go to EC-411, "Diagnostic Procedure" . F G H I J K L M Revision: July 2006 EC-409 2006 Quest DTC P0400 EGR FUNCTION Wiring Diagram EBS00R2G BBWA1615E Revision: July 2006 EC-410 2006 Quest DTC P0400 EGR FUNCTION Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 17 18 19 20 EC WIRE COLOR P/B G L L/W ITEM EGR volume control valve CONDITION [Engine is running] ● Idle speed [Ignition switch: ON] 54 P/L A EGR temperature sensor DATA (DC Voltage) C 0.1 - 14V D Less than 4.5V [Engine is running] ● Warm-up condition ● EGR system is operating. 0 - 1.5V E Approximately 0V F 0 - 1.5V G [Engine is running] 67 B Sensor ground ● Warm-up condition ● Idle speed [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] H BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) I : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) J Diagnostic Procedure EBS00R2H 1. CHECK EXHAUST SYSTEM 1. 2. K Start engine. Check exhaust pipes and muffler for leaks. L M PBIB1216E OK or NG OK >> GO TO 2. NG >> Repair or replace exhaust system. Revision: July 2006 EC-411 2006 Quest DTC P0400 EGR FUNCTION 2. CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT 1. 2. 3. Turn ignition switch OFF. Disconnect EGR volume control valve harness connector. Turn ignition switch ON. BBIA0339E 4. Check voltage between EGR volume control valve terminals 2, 5 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB0627E 3. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● Harness for open or short between EGR volume control valve and IPDM E/R ● >> Repair harness or connectors. 4. CHECK EGR VOLUME CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminals and EGR volume control valve terminals as follows. Refer to Wiring Diagram. ECM terminal EGR volume control valve 17 6 18 3 19 4 20 1 Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-412 2006 Quest DTC P0400 EGR FUNCTION 5. CHECK EGR PASSAGE A Check EGR passage for clogging and cracks. OK or NG OK >> GO TO 6. NG >> Repair or replace EGR passage. EC 6. CHECK EGR VOLUME CONTROL VALVE C Refer to EC-418, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Replace EGR volume control valve. D 7. CHECK EGR TEMPERATURE SENSOR AND CIRCUIT E Perform DTC Confirmation Procedure for DTC P0405, P0406. Refer to EC-422, "DTC Confirmation Procedure" . OK or NG OK >> GO TO 8. NG >> Repair or replace malfunctioning part. F G 8. CHECK INTERMITTENT INCIDENT H Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END I J K L M Revision: July 2006 EC-413 2006 Quest DTC P0403 EGR VOLUME CONTROL VALVE DTC P0403 EGR VOLUME CONTROL VALVE Description PFP:14710 EBS00R2I SYSTEM DESCRIPTION Sensor Camshaft position sensor (PHASE) Input Signal to ECM Crankshaft position sensor (POS) Engine speed*2 Piston position Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Park/neutral position (PNP) switch Gear position voltage*2 Battery Battery Air conditioner switch Air conditioner operation *1 Power steering pressure sensor Power steering operation Electrical load Electrical load signal *1 Wheel sensor Vehicle speed *1 TCM Gear position, shifting signal *1 ECM function EGR volume control Actuator EGR volume control valve *1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage. This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. The EGR volume control valve remains close under the following conditions. ● Engine stopped ● Engine starting ● Engine idling ● Low engine coolant temperature ● Excessively high engine coolant temperature ● High engine speed ● Wide open throttle ● Low battery voltage PBIB1843E Revision: July 2006 EC-414 2006 Quest DTC P0403 EGR VOLUME CONTROL VALVE COMPONENT DESCRIPTION EGR volume control valve A The EGR volume control valve uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the ECM. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECM does not issue the pulse signal. A certain voltage signal is issued so that the valve remains at that particular opening. EC C D SEF552W CONSULT-II Reference Value in Data Monitor Mode EBS00R2J E Specification data are reference values. MONITOR ITEM EGR VOL CON/V CONDITION ● Engine: After warming up ● Air conditioner switch: OFF ● Shift lever: P or N ● No load SPECIFICATION Idle 0 step Revving engine up to 3,000 rpm quickly 10 - 55 step On Board Diagnosis Logic F G EBS00R2K H This self-diagnosis has the one trip detection logic. DTC No. P0403 0403 Trouble diagnosis name EGR volume control valve circuit DTC detecting condition Possible cause ● Harness or connectors (The EGR volume control valve circuit is open or shorted.) ● EGR volume control valve An improper voltage signal is sent to ECM through the valve DTC Confirmation Procedure I J EBS00R2L NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. K L WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to normal operating temperature. Rev engine from idle to 2,000 rpm 10 times. If DTC is detected, go to EC-417, "Diagnostic Procedure" . M SEF174Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-415 2006 Quest DTC P0403 EGR VOLUME CONTROL VALVE Wiring Diagram EBS00R2M BBWA1616E Revision: July 2006 EC-416 2006 Quest DTC P0403 EGR VOLUME CONTROL VALVE Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 17 18 19 20 EC WIRE COLOR P/B G L L/W ITEM EGR volume control valve CONDITION [Engine is running] ● Idle speed [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) R/G R/G Power supply for ECM For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 A More than a few seconds passed after turning ignition switch OFF [Ignition switch: ON] DATA (DC Voltage) C 0.1 - 14V D 0 - 1.5V E BATTERY VOLTAGE (11 - 14V) F BATTERY VOLTAGE (11 - 14V) G : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Diagnostic Procedure EBS00R2N 1. CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT H 1. 2. 3. I Turn ignition switch OFF. Disconnect EGR volume control valve harness connector. Turn ignition switch ON. J K BBIA0249E 4. Check voltage between EGR volume control valve terminals 2, 5 and ground with CONSULT-II or tester. M Voltage: Battery voltage OK or NG OK >> GO TO 3. NG >> GO TO 2. PBIB0627E Revision: July 2006 EC-417 L 2006 Quest DTC P0403 EGR VOLUME CONTROL VALVE 2. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● Harness for open or short between EGR volume control valve and IPDM E/R >> Repair harness or connectors. 3. CHECK EGR VOLUME CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminals and EGR volume control valve terminals as follows. Refer to Wiring Diagram. ECM terminal EGR volume control valve 17 6 18 3 19 4 20 1 Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK EGR VOLUME CONTROL VALVE Refer to EC-418, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Replace EGR volume control valve. 5. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R2O EGR VOLUME CONTROL VALVE With CONSULT-II 1. 2. Turn ignition switch OFF. Disconnect EGR volume control valve harness connector. Revision: July 2006 EC-418 2006 Quest DTC P0403 EGR VOLUME CONTROL VALVE 3. Check resistance between EGR volume control valve terminal 2 and terminals 1, 3, terminal 5 and terminals 4, 6. A Resistance: 20 - 24 Ω [at 20°C (68F°)] 4. 5. 6. If NG, replace EGR volume control valve. If OK, go to next step. Remove EGR volume control valve. Reconnect ECM harness connector and EGR volume control valve harness connector. Turn ignition switch ON. EC C D E F G SEF605Y 7. Perform “EGR VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. H I J SEF015Y 8. Check that EGR volume control valve shaft moves smoothly forward and backward according to the valve opening steps. If NG, replace EGR volume control valve. K L M SEF560W Without CONSULT-II 1. 2. Turn ignition switch OFF. Disconnect EGR volume control valve harness connector. Revision: July 2006 EC-419 2006 Quest DTC P0403 EGR VOLUME CONTROL VALVE 3. Check resistance between EGR volume control valve terminal 2 and terminals 1, 3, terminal 5 and terminals 4, 6. Resistance: 20 - 24 Ω [at 20°C (68F°)] 4. 5. 6. If NG, replace EGR volume control valve. If OK, go to next step. Remove EGR volume control valve. Reconnect ECM harness connector and EGR volume control valve harness connector. Turn ignition switch ON and OFF. SEF605Y 7. Check that EGR volume control valve shaft moves smoothly forward and backward according to the ignition switch position. SEF560W Removal and Installation EBS00R2P EGR VOLUME CONTROL VALVE Refer to EM-21, "EGR VOLUME CONTROL VALVE" . Revision: July 2006 EC-420 2006 Quest DTC P0405, P0406 EGRT SENSOR DTC P0405, P0406 EGRT SENSOR Component Description PFP:14710 A EBS00R2Q The EGR temperature sensor detects temperature changes in the EGR passageway. When the EGR volume control valve opens, hot exhaust gases flow, and the temperature in the passageway changes. The EGR temperature sensor is a thermistor that modifies a voltage signal sent from the ECM. This modified signal then returns to the ECM as an input signal. As the temperature increases, EGR temperature sensor resistance decreases. This sensor is not directly used to control the engine system. It is used only for the on board diagnosis. EC C D SEF599K E EGR temperature °C (°F) Voltage* V Resistance MΩ 0 (32) 4.59 0.73 - 0.88 50 (122) 2.32 0.074 - 0.082 100 (212) 0.62 0.011 - 0.014 F G *: This data is reference value and is measured between ECM terminal 54 (EGR temperature sensor) and ground. H CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the ECM's transistor. Use a ground other than ECM terminals, such as the ground. When EGR system is operating. Voltage: 0 - 1.5V I J K SEF068X On Board Diagnosis Logic DTC No. P0405 0405 P0406 0406 Trouble Diagnosis Name EGR temperature sensor circuit low input EGR temperature sensor circuit high input Revision: July 2006 L EBS00R2R DTC Detecting Condition An excessively low voltage from the EGR temperature sensor is sent to ECM even when engine coolant temperature is low. An excessively high voltage from the EGR temperature sensor is sent to ECM even when engine coolant temperature is high. EC-421 Possible Cause M ● Harness or connectors (The EGR temperature sensor circuit is shorted.) ● EGR temperature sensor ● Malfunction of EGR function ● Harness or connectors (The EGR temperature sensor circuit is open.) ● EGR temperature sensor ● Malfunction of EGR function 2006 Quest DTC P0405, P0406 EGRT SENSOR DTC Confirmation Procedure EBS00R2S NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. PROCEDURE FOR DTC P0405 With CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Verify that “COOLAN TEMP/S” indicates less than 50°C (122°F). If the engine coolant temperature is above the range, cool the engine down. Start engine and let it idle for at least 8 seconds. If 1st trip DTC is detected, go to EC-425, "Diagnostic Procedure" . SEF174Y With GST Follow the procedure “With CONSULT-II” above. PROCEDURE FOR DTC P0406 CAUTION: Always drive vehicle at a safe speed. TESTING CONDITION: Always perform the test at a temperature above –10°C (14°F). With CONSULT-II 1. 2. 3. 4. 5. 6. 7. Start engine and warm it up to normal operating temperature. Select “EGR VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Hold engine speed at 1,500 rpm. Touch “Qu” and set the EGR volume control valve opening to 50 step and check “EGR TEMP SEN” indication. “EGR TEMP SEN” indication should decrease to less than 1.0V. If the check result is NG, go to EC-425, "Diagnostic Procedure" . If the check result is OK, go to the following step. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and maintain the following conditions for at least 5 consecutive seconds. ENG SPEED 1,200 - 2,800 rpm VHCL SPEED SE 10 km/h (6 MPH) or more B/FUEL SCHDL 4 - 9 msec Shift lever Suitable position 8. SEF015Y If 1st trip DTC is detected, go to EC-425, "Diagnostic Procedure" . PBIB0164E With GST 1. 2. 3. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. Select “Service $01” with GST and maintain the following conditions for at least 5 consecutive seconds. Revision: July 2006 EC-422 2006 Quest DTC P0405, P0406 EGRT SENSOR Engine speed 1,200 - 2,800 rpm Vehicle speed 10 km/h (6 MPH) or more Shift lever Suitable position 4. 5. A EC Select “Service $07” with GST. If 1st trip DTC is detected, go to EC-425, "Diagnostic Procedure" . C D E F G H I J K L M Revision: July 2006 EC-423 2006 Quest DTC P0405, P0406 EGRT SENSOR Wiring Diagram EBS00R2T BBWA1617E Revision: July 2006 EC-424 2006 Quest DTC P0405, P0406 EGRT SENSOR Diagnostic Procedure EBS00R2U 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-425 2006 Quest DTC P0405, P0406 EGRT SENSOR 2. CHECK EGR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT 1. 2. Disconnect EGR temperature sensor harness connector. Turn ignition switch ON. BBIA0319E 3. Check voltage between EGR temperature sensor terminal 2 and ground with CONSULT-II or tester. Voltage: Approximately 5V OK or NG OK >> GO TO 3. NG >> Repair or replace harness or connectors. PBIB2577E 3. CHECK EGR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between EGR temperature sensor terminal 1 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E19, F33 ● Harness for open or short between TCM and EGR temperature sensor ● Harness for open or short between ECM and EGR temperature sensor >> Repair open circuit or short to ground or short to power in harness or connector. 5. CHECK EGR TEMPERATURE SENSOR Refer to EC-427, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace EGR temperature sensor. Revision: July 2006 EC-426 2006 Quest DTC P0405, P0406 EGRT SENSOR 6. CHECK EGR VOLUME CONTROL VALVE A Refer to EC-418, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Replace EGR volume control valve. EC 7. CHECK INTERMITTENT INCIDENT C Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . D >> INSPECTION END Component Inspection EBS00R2V EGR TEMPERATURE SENSOR E 1. 2. 3. F Turn ignition switch OFF. Disconnect EGR temperature sensor harness connector. Check resistance between EGR temperature sensor terminals 1 and 2 as shown in the figure. G H SEF611Y < Reference data> 4. I J EGR temperature °C (°F) Resistance MΩ 0 (32) 0.73 - 0.88 50 (122) 0.074 - 0.082 100 (212) 0.011 - 0.014 K L If NG, replace EGR temperature sensor. M SEF068X Removal and Installation EBS00R2W EGR TEMPERATURE SENSOR Refer to EM-21, "EGR VOLUME CONTROL VALVE" . Revision: July 2006 EC-427 2006 Quest DTC P0420, P0430 THREE WAY CATALYST FUNCTION DTC P0420, P0430 THREE WAY CATALYST FUNCTION On Board Diagnosis Logic PFP:20905 EBS00R2X The ECM monitors the switching frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2. A three way catalyst (manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase. When the frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2 approaches a specified limit value, the three way catalyst (manifold) malfunction is diagnosed. SEF484YB DTC No. Trouble diagnosis name P0420 0420 (Bank 1) P0430 0430 (Bank 2) DTC detecting condition ● Catalyst system efficiency below threshold ● Three way catalyst (manifold) does not operate properly. Three way catalyst (manifold) does not have enough oxygen storage capacity. Possible cause ● Three way catalyst (manifold) ● Exhaust tube ● Intake air leaks ● Fuel injector ● Fuel injector leaks ● Spark plug ● Improper ignition timing DTC Confirmation Procedure EBS00R2Y NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II TESTING CONDITION: Do not hold engine speed for more than the specified minutes below. 1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. 2. Start engine and warm it up to the normal operating temperature. 3. Turn ignition switch OFF and wait at least 10 seconds. 4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. 5. Let engine idle for 1 minute. 6. Make sure that “COOLAN TEMP/S” indicates more than 70°C (158°F). If not, warm up engine and go to next step when “COOLAN TEMP/S” indication reaches to 70°C (158°F). 7. Open engine hood. Revision: July 2006 EC-428 SEF189Y 2006 Quest DTC P0420, P0430 THREE WAY CATALYST FUNCTION 8. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUPPORT” mode with CONSULT-II. 9. Rev engine up to 2,000 to 3,000 rpm and hold it for 3 consecutive minutes then release the accelerator pedal completely. If “INCMP” of “CATALYST” changed to “CMPLT”, go to step 12. 10. Wait 5 seconds at idle. A EC C SEF533Z D 11. Rev engine up to 2,000 to 3,000 rpm and maintain it until “INCMP” of “CATALYST” changes to “CMPLT” (It will take approximately 5 minutes). If not “CMPLT”, stop engine and cool it down to less than 70°C (158°F) and then retest from step 1. E F G SEF534Z 12. Select “SELF-DIAG RESULTS” mode with CONSULT-II. 13. Confirm that the 1st trip DTC is not detected. If the 1st trip DTC is detected, go to EC-430, "Diagnostic Procedure" . H I J SEF535Z Overall Function Check K EBS00R2Z Use this procedure to check the overall function of the three way catalyst (manifold). During this check, a DTC might not be confirmed. L WITH GST 1. 2. 3. 4. 5. 6. 7. 8. Start engine and warm it up to the normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. Let engine idle for 1 minute. Open engine hood. Set voltmeter probe between ECM terminals 74 [HO2S2 (bank 1) signal], 55 [HO2S2 (bank 2) signal] and ground. Keep engine speed at 2,500 rpm constant under no load. Make sure that the voltage does not vary for more than 5 seconds. If the voltage fluctuation cycle takes less than 5 seconds, go to EC-430, "Diagnostic Procedure" . ● 1 cycle: 0.6 - 1.0 → 0 - 0.3 → 0.6 - 1.0 PBIB1108E Revision: July 2006 EC-429 2006 Quest M DTC P0420, P0430 THREE WAY CATALYST FUNCTION Diagnostic Procedure EBS00R30 1. CHECK EXHAUST SYSTEM Visually check exhaust tubes and muffler for dent. OK or NG OK >> GO TO 2. NG >> Repair or replace. 2. CHECK EXHAUST GAS LEAK 1. 2. Start engine and run it at idle. Listen for an exhaust gas leak before the three way catalyst (manifold). PBIB1216E OK or NG OK >> GO TO 3. NG >> Repair or replace. 3. CHECK INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. OK or NG OK >> GO TO 4. NG >> Repair or replace. 4. CHECK IGNITION TIMING Check the following items. Refer to EC-75, "Basic Inspection" . Items Target idle speed Ignition timing Specifications 4-speed A/T 700 ± 50 rpm (in P or N position) 5-speed A/T 675 ± 50 rpm (in P or N position) A/T 15 ± 5° BTDC (in P or N position) OK or NG OK >> GO TO 5. NG >> Follow the EC-75, "Basic Inspection" . Revision: July 2006 EC-430 2006 Quest DTC P0420, P0430 THREE WAY CATALYST FUNCTION 5. CHECK FUEL INJECTORS 1. 2. A Stop engine and then turn ignition switch ON. Check voltage between ECM terminals 21, 22, 23, 40, 41, 42 and ground with CONSULT-II or tester. Refer to Wiring Diagram for fuel Injectors, EC-685 . EC Voltage: Battery voltage C OK or NG OK >> GO TO 6. NG >> Perform EC-686, "Diagnostic Procedure" . D PBIB2250E E 6. CHECK FUNCTION OF IGNITION COIL-I CAUTION: Do the following procedure in the place where ventilation is good without the combustible. 1. Turn ignition switch OFF. 2. Remove fuel pump fuse in IPDM E/R to release fuel pressure. NOTE: Do not use CONSULT-II to release fuel pressure, or fuel pressure applies again during the following procedure. 3. Start engine. 4. After engine stalls, crank it two or three times to release all fuel pressure. 5. Turn ignition switch OFF. 6. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils. 7. Remove ignition coil and spark plug of the cylinder to be checked. 8. Crank engine for five seconds or more to remove combustion gas in the cylinder. 9. Connect spark plug and harness connector to ignition coil. 10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm between the edge of the spark plug and grounded metal portion as shown in the figure. 11. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded metal portion. F G H I BBIA0229E K L M Spark should be generated. CAUTION: ● Do not approach to the spark plug and the ignition coil within 50cm. Be careful not to get an electrical shock PBIB2325E while checking, because the electrical discharge voltage becomes 20kV or more. ● It might cause to damage the ignition coil if the gap of more than 17 mm is taken. NOTE: When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning. OK or NG OK >> GO TO 10. NG >> GO TO 7. Revision: July 2006 EC-431 J 2006 Quest DTC P0420, P0430 THREE WAY CATALYST FUNCTION 7. CHECK FUNCTION OF IGNITION COIL-II 1. 2. 3. Turn ignition switch OFF. Disconnect spark plug and connect a known-good spark plug. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug and the grounded metal portion. Spark should be generated. OK or NG OK >> GO TO 8. NG >> Check ignition coil, power transistor and their circuits. Refer to EC-684, "FUEL INJECTOR" . 8. CHECK SPARK PLUG Check the initial spark plug for fouling, etc. OK or NG OK >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-20, "Changing Spark Plugs (Platinum - Tipped Type)" . NG >> 1. Repair or clean spark plug. 2. GO TO 9. SEF156I 9. CHECK FUNCTION OF IGNITION COIL-III 1. 2. Reconnect the initial spark plugs. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug and the grounded portion. Spark should be generated. OK or NG OK >> INSPECTION END NG >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-20, "Changing Spark Plugs (Platinum - Tipped Type)" . 10. CHECK FUEL INJECTOR 1. 2. Turn ignition switch OFF. Remove fuel injector assembly. Refer to EM-39, "FUEL INJECTOR AND FUEL TUBE" . Keep fuel hose and all fuel injectors connected to fuel injector gallery. 3. Reconnect all fuel injector harness connectors. 4. Disconnect all ignition coil harness connectors. 5. Turn ignition switch ON. Make sure fuel does not drip from fuel injector. OK or NG OK (Does not drip.)>>GO TO 11. NG (Drips.)>>Replace the fuel injector(s) from which fuel is dripping. Revision: July 2006 EC-432 2006 Quest DTC P0420, P0430 THREE WAY CATALYST FUNCTION 11. CHECK INTERMITTENT INCIDENT A Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . EC Trouble is fixed.>>INSPECTION END Trouble is not fixed.>>Replace three way catalyst (manifold). C D E F G H I J K L M Revision: July 2006 EC-433 2006 Quest DTC P0441 EVAP CONTROL SYSTEM DTC P0441 EVAP CONTROL SYSTEM System Description PFP:14950 EBS00R31 NOTE: If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform trouble diagnosis for other DTC. PBIB1026E In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP control system pressure sensor to intake manifold vacuum. On Board Diagnosis Logic EBS00R32 Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow are adequate. If not, a malfunction is determined. DTC No. P0441 0441 Trouble diagnosis name EVAP control system incorrect purge flow DTC detecting condition EVAP control system does not operate properly, EVAP control system has a leak between intake manifold and EVAP control system pressure sensor. DTC Confirmation Procedure Possible cause ● EVAP canister purge volume control solenoid valve stuck closed ● EVAP control system pressure sensor and the circuit ● Loose, disconnected or improper connection of rubber tube ● Blocked rubber tube ● Cracked EVAP canister ● EVAP canister purge volume control solenoid valve circuit ● Accelerator pedal position sensor ● Blocked purge port ● EVAP canister vent control valve EBS00R33 CAUTION: Always drive vehicle at a safe speed. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Always perform test at a temperature of 5°C (41°F) or more. Revision: July 2006 EC-434 2006 Quest DTC P0441 EVAP CONTROL SYSTEM WITH CONSULT-II 1. 2. 3. 4. 5. 6. A Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and let it idle for at least 70 seconds. EC Select “PURG FLOW P0441” of “EVAPORATIVE SYSTEM” in “DTC CONFIRMATION” mode with CONSULT-II. Touch “START”. C If “COMPLETED” is displayed, go to step 7. When the following conditions are met, “TESTING” will be displayed on the CONSULT-II screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take at least 35 seconds.) D Shift lever Suitable position VHCL SPEED SE 32 - 120 km/h (20 - 75 MPH) ENG SPEED 500 - 3,000 rpm B/FUEL SCHDL 1.3 - 9.0 msec COOLAN TEMP/S 70 - 100°C (158 - 212°F) E F G H I PBIB0826E 7. If “TESTING” is not changed for a long time, retry from step 2. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC436, "Diagnostic Procedure" . Overall Function Check EBS00R34 J K Use this procedure to check the overall monitoring function of the EVAP control system purge flow monitoring. During this check, a 1st trip DTC might not be confirmed. WITH GST 1. 2. 3. 4. 5. 6. 7. L Lift up drive wheels. Start engine (TCS switch or VDC switch OFF) and warm it up to normal operating temperature. Turn ignition switch OFF, wait at least 10 seconds. Start engine and wait at least 70 seconds. Set voltmeter probes to ECM terminals 32 (EVAP control system pressure sensor signal) and ground. Check EVAP control system pressure sensor value at idle speed and note it. Establish and maintain the following conditions for at least 1 minute. Air conditioner switch ON Headlamp switch ON Rear window defogger switch ON Engine speed Approx. 3,000 rpm Gear position Any position other than P, N or R M PBIB1109E 8. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (measured at step 6) for at least 1 second. Revision: July 2006 EC-435 2006 Quest DTC P0441 EVAP CONTROL SYSTEM 9. If NG, go to EC-436, "Diagnostic Procedure" . Diagnostic Procedure EBS00R35 1. CHECK EVAP CANISTER 1. Turn ignition switch OFF. 2. Check EVAP canister for cracks. OK or NG OK (With CONSULT-II)>>GO TO 2. OK (Without CONSULT-II)>>GO TO 3. NG >> Replace EVAP canister. 2. CHECK PURGE FLOW 1. 2. 3. 4. 5. With CONSULT-II Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge. For the location of EVAP service port, refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . Start engine and let it idle. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Rev engine up to 2,000 rpm. Touch “Qd” and “Qu” on CONSULT-II screen to adjust “PURG VOL CONT/V” opening and check vacuum existence. PURG VOL CONT/V 100% Vacuum Should exist. 0% Should not exist. OK or NG OK >> GO TO 7. NG >> GO TO 4. PBIB1678E 3. CHECK PURGE FLOW 1. 2. 3. 4. 5. Without CONSULT-II Start engine and warm it up to normal operating temperature. Stop engine. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge. For the location of EVAP service port, refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . Start engine and let it idle. Do not depress accelerator pedal even slightly. Check vacuum gauge indication before 60 seconds passed after engine starting engine. Vacuum should not exist. 6. Revving engine up to 2,000 rpm after 100 seconds passed after starting engine. Vacuum should exist. OK or NG OK >> GO TO 7. NG >> GO TO 4. Revision: July 2006 EC-436 2006 Quest DTC P0441 EVAP CONTROL SYSTEM 4. CHECK EVAP PURGE LINE A 1. 2. Turn ignition switch OFF. Check EVAP purge line for improper connection or disconnection. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 5. NG >> Repair it. EC C 5. CHECK EVAP PURGE HOSE AND PURGE PORT 1. 2. D Disconnect purge hoses connected to EVAP service port A and EVAP canister purge volume control solenoid valve B . Blow air into each hose and EVAP purge port C . E F G SEF367U 3. Check that air flows freely. OK or NG OK (With CONSULT-II)>>GO TO 6. OK (Without CONSULT-II)>>GO TO 7. NG >> Repair or clean hoses and/or purge port. H I J SEF368U K 6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE L With CONSULT-II 1. Start engine. 2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that engine speed varies according to the valve opening. OK or NG OK >> GO TO 8. NG >> GO TO 7. M PBIB1678E 7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to EC-460, "Component Inspection" . OK or NG OK >> GO TO 8. NG >> Replace EVAP canister purge volume control solenoid valve. Revision: July 2006 EC-437 2006 Quest DTC P0441 EVAP CONTROL SYSTEM 8. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR 1. 2. Disconnect EVAP control system pressure sensor harness connector. Check connectors for water. Water should not exist. OK or NG OK >> GO TO 9. NG >> Replace EVAP control system pressure sensor. 9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION Refer to DTC Confirmation Procedure for DTC P0452 EC-480 , P0453 EC-487 . OK or NG OK >> GO TO 10. NG >> Replace EVAP control system pressure sensor. 10. CHECK RUBBER TUBE FOR CLOGGING 1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging. OK or NG OK >> GO TO 11. NG >> Clean the rubber tube using an air blower. 11. CHECK EVAP CANISTER VENT CONTROL VALVE Refer to EC-467, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> Replace EVAP canister vent control valve. 12. CHECK EVAP PURGE LINE Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 13. NG >> Replace it. 13. CLEAN EVAP PURGE LINE Clean EVAP purge line (pipe and rubber tube) using air blower. >> GO TO 14. 14. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-438 2006 Quest DTC P0442 EVAP CONTROL SYSTEM DTC P0442 EVAP CONTROL SYSTEM On Board Diagnosis Logic PFP:14950 A EBS00R36 This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum. If pressure does not increase, the ECM will check for leaks in the line between the fuel tank and EVAP canister EC purge volume control solenoid valve, under the following “Vacuum test” conditions. The EVAP canister vent control valve is closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold C vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed. D E F G H PBIB1026E DTC No. P0442 0442 Trouble diagnosis name EVAP control system small leak detected (negative pressure) Revision: July 2006 DTC detecting condition EVAP control system has a leak, EVAP control system does not operate properly. EC-439 I Possible cause J ● Incorrect fuel tank vacuum relief valve ● Incorrect fuel filler cap used ● Fuel filler cap remains open or fails to close. ● Foreign matter caught in fuel filler cap. K ● Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve. L ● Foreign matter caught in EVAP canister vent control valve. ● EVAP canister or fuel tank leaks ● EVAP purge line (pipe and rubber tube) leaks ● EVAP purge line rubber tube bent ● Loose or disconnected rubber tube ● EVAP canister vent control valve and the circuit ● EVAP canister purge volume control solenoid valve and the circuit ● Fuel tank temperature sensor ● O-ring of EVAP canister vent control valve is missing or damaged ● EVAP canister is saturated with water ● EVAP control system pressure sensor ● Fuel level sensor and the circuit ● Refueling EVAP vapor cut valve ● ORVR system leaks M 2006 Quest DTC P0442 EVAP CONTROL SYSTEM CAUTION: ● Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on. ● If the fuel filler cap is not tightened properly, the MIL may come on. ● Use only a genuine NISSAN rubber tube as a replacement. DTC Confirmation Procedure EBS00R37 NOTE: ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: ● Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed on flat level surface. ● Always perform test at a temperature of 0 to 30°C (32 to 86°F). WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Make sure that the following conditions are met. COOLAN TEMP/S: 0 - 70°C (32 - 158°F) INT/A TEMP SE: 0 - 30°C (32 - 86°F) Select “EVAP SML LEAK P0442/P1442” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II. Follow the instruction displayed. PBIB0829E 6. NOTE: If the engine speed cannot be maintained within the range displayed on the CONSULT-II screen, go to EC-75, "Basic Inspection" . Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-441, "Diagnostic Procedure" . NOTE: Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly. SEC763C WITH GST NOTE: Be sure to read the explanation of Driving Pattern on EC-61, "Driving Pattern" before driving vehicle. 1. Start engine. 2. Drive vehicle according to “Driving Pattern”, EC-61, "Driving Pattern" . 3. Stop vehicle. Revision: July 2006 EC-440 2006 Quest DTC P0442 EVAP CONTROL SYSTEM 4. 5. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. Select “Service $07” with GST. ● If P0442 is displayed on the screen, go to EC-441, "Diagnostic Procedure" . ● If P0441 is displayed on the screen, go to Diagnostic Procedure for DTC P0441, EC-436 . Diagnostic Procedure A EC EBS00R38 1. CHECK FUEL FILLER CAP DESIGN C 1. Turn ignition switch OFF. 2. Check for genuine NISSAN fuel filler cap design. OK or NG OK >> GO TO 2. NG >> Replace with genuine NISSAN fuel filler cap. D E F SEF915U G 2. CHECK FUEL FILLER CAP INSTALLATION Check that the cap is tightened properly by rotating the cap clockwise. OK or NG OK >> GO TO 3. NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. 2. Retighten until ratcheting sound is heard. H I 3. CHECK FUEL FILLER CAP FUNCTION J Check for air releasing sound while opening the fuel filler cap. OK or NG OK >> GO TO 5. NG >> GO TO 4. K 4. CHECK FUEL TANK VACUUM RELIEF VALVE L Refer to EC-37, "FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)" . OK or NG OK >> GO TO 5. NG >> Replace fuel filler cap with a genuine one. Revision: July 2006 EC-441 M 2006 Quest DTC P0442 EVAP CONTROL SYSTEM 5. INSTALL THE PRESSURE PUMP To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely. NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking. BBIA0320E SEF916U With CONSULT-II>>GO TO 6. Without CONSULT-II>>GO TO 7. 6. CHECK FOR EVAP LEAK With CONSULT-II 1. Turn ignition switch ON. 2. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-II. 3. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph. CAUTION: ● Never use compressed air or a high pressure pump. ● Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system. PEF917U 4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 8. NG >> Repair or replace. SEF200U Revision: July 2006 EC-442 2006 Quest DTC P0442 EVAP CONTROL SYSTEM 7. CHECK FOR EVAP LEAK 1. 2. A Without CONSULT-II Turn ignition switch OFF. EC Apply 12 volts DC to EVAP canister vent control valve (2). The valve will close. (Continue to apply 12 volts until the end of test.) C D E BBIA0664E : 3. Vehicle front 1. EVAP control system pressure sensor 3. F EVAP canister Pressurize the EVAP line using pressure pump with 1.3 to 2.7 kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove pump and EVAP service port adapter. CAUTION: ● Never use compressed air or a high pressure pump. Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system. 4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 8. NG >> Repair or replace. G H ● I J K SEF200U L 8. CHECK EVAP CANISTER VENT CONTROL VALVE Check the following. ● EVAP canister vent control valve is installed properly. Refer to EC-38, "Removal and Installation" . ● EVAP canister vent control valve. Refer to EC-467, "Component Inspection" . OK or NG OK >> GO TO 9. NG >> Repair or replace EVAP canister vent control valve and O-ring. Revision: July 2006 EC-443 M 2006 Quest DTC P0442 EVAP CONTROL SYSTEM 9. CHECK IF EVAP CANISTER SATURATED WITH WATER 1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. 2. Does water drain from the EVAP canister? Yes or No Yes >> GO TO 10. No (With CONSULT-II)>>GO TO 12. No (Without CONSULT-II)>>GO TO 13. PBIB1381E 10. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.1 kg (4.6 lb). OK or NG OK (With CONSULT-II)>>GO TO 12. OK (Without CONSULT-II)>>GO TO 13. NG >> GO TO 11. 11. DETECT MALFUNCTIONING PART Check the following. EVAP canister for damage ● EVAP hose between EVAP canister and vehicle frame for clogging or poor connection ● >> Repair hose or replace EVAP canister. 12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION With CONSULT-II Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode. Touch “Qu” on CONSULT-II screen to increase “PURG VOL CONT/V” opening to 100%. 5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. OK or NG OK >> GO TO 15. NG >> GO TO 14. 1. 2. 3. 4. PBIB1678E Revision: July 2006 EC-444 2006 Quest DTC P0442 EVAP CONTROL SYSTEM 13. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION 1. 2. 3. 4. 5. A Without CONSULT-II Start engine and warm it up to normal operating temperature. Stop engine. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine and let it idle for at least 80 seconds. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. EC C Vacuum should exist. D OK or NG OK >> GO TO 16. NG >> GO TO 14. E 14. CHECK VACUUM HOSE Check vacuum hoses for clogging or disconnection. Refer to EC-109, "Vacuum Hose Drawing" . OK or NG OK >> GO TO 15. NG >> Repair or reconnect the hose. F G 15. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE H Refer to EC-460, "Component Inspection" . OK or NG OK >> GO TO 16. NG >> Replace EVAP canister purge volume control solenoid valve. I 16. CHECK FUEL TANK TEMPERATURE SENSOR J Refer to EC-360, "Component Inspection" . OK or NG OK >> GO TO 17. NG >> Replace fuel level sensor unit. K 17. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR L Refer to EC-485, "Component Inspection" . OK or NG OK >> GO TO 18. NG >> Replace EVAP control system pressure sensor. M 18. CHECK EVAP PURGE LINE Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 19. NG >> Repair or reconnect the hose. 19. CLEAN EVAP PURGE LINE Clean EVAP purge line (pipe and rubber tube) using air blower. >> GO TO 20. Revision: July 2006 EC-445 2006 Quest DTC P0442 EVAP CONTROL SYSTEM 20. CHECK EVAP/ORVR LINE Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper connection. For location, refer to EC-41, "ON BOARD REFUELING VAPOR RECOVERY (ORVR)" . OK or NG OK >> GO TO 21. NG >> Repair or replace hoses and tubes. 21. CHECK RECIRCULATION LINE Check recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, looseness and improper connection. OK or NG OK >> GO TO 22. NG >> Repair or replace hose, tube or filler neck tube. 22. CHECK REFUELING EVAP VAPOR CUT VALVE Refer to EC-45, "Component Inspection" . OK or NG OK >> GO TO 23. NG >> Replace refueling EVAP vapor cut valve with fuel tank. 23. CHECK FUEL LEVEL SENSOR Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . OK or NG OK >> GO TO 24. NG >> Replace fuel level sensor unit. 24. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-446 2006 Quest DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE PFP:14920 Description A EBS00R39 SYSTEM DESCRIPTION Sensor Input Signal to ECM Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed*1 Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Battery Battery voltage*1 Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Air fuel ratio (A/F) sensors 1 Density of oxygen in exhaust gas (Mixture ratio feedback signal) Fuel tank temperature sensor Fuel temperature in fuel tank Wheel sensor Vehicle speed*2 ECM function EC Actuator C D EVAP canister purge flow control EVAP canister purge volume control solenoid valve E F *1: ECM determines the start signal status by the signals of engine speed and battery voltage. *2: This signal is sent to the ECM through CAN communication line. G This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass passage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor from the EVAP canister is regulated as the air flow changes. H I COMPONENT DESCRIPTION The EVAP canister purge volume control solenoid valve uses a ON/ OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve. J K L SEF337U M CONSULT-II Reference Value in Data Monitor Mode EBS00R3A Specification data are reference values. MONITOR ITEM PURG VOL C/V Revision: July 2006 CONDITION ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load SPECIFICATION Idle (Accelerator pedal is not depressed even slightly, after engine starting) 0% 2,000 rpm — EC-447 2006 Quest DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE On Board Diagnosis Logic DTC No. P0443 0443 Trouble diagnosis name EVAP canister purge volume control solenoid valve EBS00R3B DTC detecting condition The canister purge flow is detected during the specified driving conditions, even when EVAP canister purge volume control solenoid valve is completely closed. DTC Confirmation Procedure Possible cause ● EVAP control system pressure sensor ● EVAP canister purge volume control solenoid valve (The valve is stuck open.) ● EVAP canister vent control valve ● EVAP canister ● Hoses (Hoses are connected incorrectly or clogged.) EBS00R3C NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Always perform test at a temperature of 5°C (41°F) or more. WITH CONSULT-II 1. 2. 3. 4. 5. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON. Select “PURG VOL CN/V P1444” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II. Touch “START”. PBIB0839E 6. 7. Start engine and let it idle until “TESTING” on CONSULT-II changes to “COMPLETED”. (It will take approximately 10 seconds.) If “TESTING” is not displayed after 5 minutes, retry from step 2. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC451, "Diagnostic Procedure" . WITH GST 1. 2. 3. 4. 5. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Start engine and let it idle for at least 20 seconds. Select “Service $07” with GST. If 1st trip DTC is detected, go to EC-451, "Diagnostic Procedure" . Revision: July 2006 EC-448 2006 Quest DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Wiring Diagram EBS00R3D A EC C D E F G H I J K L M BBWA1618E Revision: July 2006 EC-449 2006 Quest DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) [Engine is running] 45 V/R*1 2 P/R* ● Idle speed ● Accelerator pedal is not depressed even slightly, after engine starting EVAP canister purge volume control solenoid valve SEC990C BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Engine speed is about 2,000 rpm (More than 100 seconds after starting engine). SEC991C [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) *1: 4-speed A/T models *2: 5-speed A/T models : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-450 2006 Quest DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Diagnostic Procedure EBS00R3E 1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIR- A CUIT 1. 2. 3. Turn ignition switch OFF. Disconnect EVAP canister purge volume control solenoid valve harness connector. Turn ignition switch ON. EC C D E BBIA0255E 4. F Check voltage between EVAP canister purge volume control solenoid valve terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage G OK or NG OK >> GO TO 3. NG >> GO TO 2. H PBIB0080E I 2. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness connectors F44, F101 ● IPDM E/R harness connector E122 ● Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R ● Harness for open or short between EVAP canister purge volume control solenoid valve and ECM J K L >> Repair harness or connectors. 3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid valve terminal 2. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. Revision: July 2006 EC-451 2006 Quest M DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F44, F101 ● Harness for open or short between EVAP canister purge volume control solenoid valve and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR 1. Disconnect EVAP control system pressure sensor harness connector (1). BBIA0664E : Vehicle front 2. 2. EVAP canister vent control valve 3. EVAP canister Check connectors for water. Water should not exist. OK or NG OK >> GO TO 6. NG >> Replace EVAP control system pressure sensor. 6. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-485, "Component Inspection" . OK or NG OK (With CONSULT-II)>>GO TO 7. OK (Without CONSULT-II)>>GO TO 8. NG >> Replace EVAP control system pressure sensor. 7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II 1. Turn ignition switch OFF. 2. Reconnect all harness connectors disconnected. 3. Start engine. 4. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that engine speed varies according to the valve opening. OK or NG OK >> GO TO 9. NG >> GO TO 8. PBIB1678E Revision: July 2006 EC-452 2006 Quest DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 8. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE A Refer to EC-454, "Component Inspection" . OK or NG OK >> GO TO 9. NG >> Replace EVAP canister purge volume control solenoid valve. EC 9. CHECK RUBBER TUBE FOR CLOGGING C 1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging. OK or NG OK >> GO TO 10. NG >> Clean the rubber tube using an air blower. D E 10. CHECK EVAP CANISTER VENT CONTROL VALVE Refer to EC-467, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> Replace EVAP canister vent control valve. F G 11. CHECK IF EVAP CANISTER SATURATED WITH WATER 1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. 2. Check if water will drain from the EVAP canister. Yes or No Yes >> GO TO 12. No >> GO TO 14. H I J K PBIB1381E L 12. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.1 kg (4.6 lb). OK or NG OK >> GO TO 14. NG >> GO TO 13. 13. DETECT MALFUNCTIONING PART Check the following. ● EVAP canister for damage ● EVAP hose between EVAP canister and vehicle frame for clogging or poor connection >> Repair hose or replace EVAP canister. Revision: July 2006 EC-453 2006 Quest M DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 14. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R3F EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II Check air passage continuity of EVAP canister purge volume control solenoid valve using “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II under the following conditions. Condition (PURG VOL CONT/V value) Air passage continuity between A and B 100% Yes 0% No PBIB0149E Without CONSULT-II Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions. Condition Air passage continuity between A and B 12V direct current supply between terminals 1 and 2 Yes No supply No PBIB0150E Removal and Installation EBS00R3G EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . Revision: July 2006 EC-454 2006 Quest DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE PFP:14920 Description A EBS00R3H SYSTEM DESCRIPTION EC Sensor Input Signal to ECM Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed*1 Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Battery Battery voltage*1 Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Air fuel ratio (A/F) sensors 1 Density of oxygen in exhaust gas (Mixture ratio feedback signal) Fuel tank temperature sensor Fuel temperature in fuel tank Wheel sensor Vehicle speed*2 ECM function Actuator C D EVAP canister purge flow control EVAP canister purge volume control solenoid valve E F *1: ECM determines the start signal status by the signals of engine speed and battery voltage. *2: This signal is sent to the ECM through CAN communication line. G This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass passage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor from the EVAP canister is regulated as the air flow changes. H I COMPONENT DESCRIPTION The EVAP canister purge volume control solenoid valve uses a ON/ OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve. J K L SEF337U CONSULT-II Reference Value in Data Monitor Mode EBS00R3I Specification data are reference values. MONITOR ITEM PURG VOL C/V Revision: July 2006 CONDITION ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load SPECIFICATION Idle (Accelerator pedal is not depressed even slightly, after engine starting) 0% 2,000 rpm — EC-455 2006 Quest M DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE On Board Diagnosis Logic DTC No. P0444 0444 P0445 0445 EBS00R3J Trouble diagnosis name DTC detecting condition EVAP canister purge volume control solenoid valve circuit open An excessively low voltage signal is sent to ECM through the valve EVAP canister purge volume control solenoid valve circuit shorted An excessively high voltage signal is sent to ECM through the valve DTC Confirmation Procedure Possible cause ● Harness or connectors (The solenoid valve circuit is open or shorted.) ● EVAP canister purge volume control solenoid valve ● Harness or connectors (The solenoid valve circuit is shorted.) ● EVAP canister purge volume control solenoid valve EBS00R3K NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm battery voltage is more than 11V at idle. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for at least 13 seconds. If 1st trip DTC is detected, go to EC-459, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-456 2006 Quest DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Wiring Diagram EBS00R3L A EC C D E F G H I J K L M BBWA1618E Revision: July 2006 EC-457 2006 Quest DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) [Engine is running] 45 V/R*1 2 P/R* ● Idle speed ● Accelerator pedal is not depressed even slightly, after engine starting EVAP canister purge volume control solenoid valve SEC990C BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Engine speed is about 2,000 rpm (More than 100 seconds after starting engine). SEC991C [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) *1: 4-speed A/T models *2: 5-speed A/T models : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-458 2006 Quest DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Diagnostic Procedure EBS00R3M 1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIR- A CUIT 1. 2. 3. Turn ignition switch OFF. Disconnect EVAP canister purge volume control solenoid valve harness connector. Turn ignition switch ON. EC C D E BBIA0255E 4. F Check voltage between EVAP canister purge volume control solenoid valve terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage G OK or NG OK >> GO TO 3. NG >> GO TO 2. H PBIB0080E I 2. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness connectors F44, F101 ● IPDM E/R harness connector E122 ● Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R ● Harness for open or short between EVAP canister purge volume control solenoid valve and ECM J K L >> Repair harness or connectors. 3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid valve terminal 2. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK (With CONSULT-II)>>GO TO 5. OK (Without CONSULT-II)>>GO TO 6. NG >> GO TO 4. Revision: July 2006 EC-459 2006 Quest M DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F44, F101 ● Harness for open or short between EVAP canister purge volume control solenoid valve and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION With CONSULT-II 1. Reconnect all harness connectors disconnected. 2. Start engine. 3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that engine speed varies according to the valve opening. OK or NG OK >> GO TO 7. NG >> GO TO 6. PBIB1678E 6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to EC-460, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Replace EVAP canister purge volume control solenoid valve. 7. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R3N EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II Check air passage continuity of EVAP canister purge volume control solenoid valve using “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II under the following conditions. Condition (PURG VOL CONT/V value) Air passage continuity between A and B 100% Yes 0% No PBIB0149E Revision: July 2006 EC-460 2006 Quest DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Without CONSULT-II A Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions. Condition Air passage continuity between A and B 12V direct current supply between terminals 1 and 2 Yes No supply No EC C PBIB0150E Removal and Installation D EBS00R3O EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE E Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . F G H I J K L M Revision: July 2006 EC-461 2006 Quest DTC P0447 EVAP CANISTER VENT CONTROL VALVE DTC P0447 EVAP CANISTER VENT CONTROL VALVE Component Description PFP:14935 EBS00R3P The EVAP canister vent control valve (2) is located on the EVAP canister (3) and is used to seal the canister vent. This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. This solenoid valve is used only for diagnosis, and usually remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System diagnosis. PBIB1263E BBIA0664E : Vehicle front 1. EVAP control system pressure sensor CONSULT-II Reference Value in Data Monitor Mode EBS00R3Q Specification data are reference values. MONITOR ITEM VENT CONT/V CONDITION ● SPECIFICATION Ignition switch: ON OFF On Board Diagnosis Logic DTC No. P0447 0447 Trouble diagnosis name EVAP canister vent control valve circuit open Revision: July 2006 EBS00R3R DTC detecting condition An improper voltage signal is sent to ECM through EVAP canister vent control valve. EC-462 Possible cause ● Harness or connectors (The valve circuit is open or shorted.) ● EVAP canister vent control valve 2006 Quest DTC P0447 EVAP CANISTER VENT CONTROL VALVE DTC Confirmation Procedure EBS00R3S A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm battery voltage is more than 11V at idle. WITH CONSULT-II 1. 2. 3. 4. C Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and wait at least 8 seconds. If 1st trip DTC is detected, go to EC-465, "Diagnostic Procedure" . D E F SEF058Y G WITH GST Follow the procedure “WITH CONSULT-II” above. H I J K L M Revision: July 2006 EC-463 2006 Quest DTC P0447 EVAP CANISTER VENT CONTROL VALVE Wiring Diagram EBS00R3T BBWA2019E Revision: July 2006 EC-464 2006 Quest DTC P0447 EVAP CANISTER VENT CONTROL VALVE Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. EC WIRE COLOR ITEM CONDITION [Engine is running] [Ignition switch: OFF] ● 111 W/B A ECM relay (Self shut-off) [Ignition switch: OFF] ● 117 LG/B EVAP canister vent control valve 119 120 R/G R/G Power supply for ECM For a few seconds after turning ignition switch OFF More than a few seconds after turning ignition switch OFF DATA (DC Voltage) C 0 - 1.5V D BATTERY VOLTAGE (11 - 14V) E [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) Diagnostic Procedure F EBS00R3U 1. INSPECTION START G Do you have CONSULT-II? Yes or No Yes >> GO TO 2. No >> GO TO 3. H I 2. CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT With CONSULT-II Turn ignition switch OFF and then turn ON. Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-II. 3. Touch “ON/OFF” on CONSULT-II screen. 4. Check for operating sound of the valve. Clicking noise should be heard. OK or NG OK >> GO TO 7. NG >> GO TO 3. J 1. 2. K L M PBIB1679E Revision: July 2006 EC-465 2006 Quest DTC P0447 EVAP CANISTER VENT CONTROL VALVE 3. CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect EVAP canister vent control valve harness connector (2). BBIA0664E : 3. 4. Vehicle front 1. EVAP control system pressure sensor 3. EVAP canister Turn ignition switch ON. Check voltage between EVAP canister vent control valve terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 5. NG >> GO TO 4. PBIB0152E 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors B107, E139 ● IPDM E/R harness connector E122 ● Harness for open or short between EVAP canister vent control valve and IPDM E/R >> Repair harness or connectors. 5. CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 117 and EVAP canister vent control valve terminal 2. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. Revision: July 2006 EC-466 2006 Quest DTC P0447 EVAP CANISTER VENT CONTROL VALVE 6. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors B107, E139 ● Harness for open or short between EVAP canister vent control valve and ECM EC >> Repair open circuit or short to ground or short to power in harness or connectors. C 7. CHECK RUBBER TUBE FOR CLOGGING 1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging. OK or NG OK >> GO TO 8. NG >> Clean the rubber tube using an air blower. D E 8. CHECK EVAP CANISTER VENT CONTROL VALVE F Refer to EC-467, "Component Inspection" . OK or NG OK >> GO TO 9. NG >> Replace EVAP canister vent control valve. G 9. CHECK INTERMITTENT INCIDENT H Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . I >> INSPECTION END Component Inspection EBS00R3V EVAP CANISTER VENT CONTROL VALVE With CONSULT-II 1. 2. 3. 4. Remove EVAP canister vent control valve from EVAP canister. Check portion B of EVAP canister vent control valve for being rusted. If NG, replace EVAP canister vent control valve. If OK, go to next step. Reconnect all harness connectors disconnected. Turn ignition switch ON. K L M PBIB1033E 5. 6. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode. Check air passage continuity and operation delay time. Make sure new O-ring is installed properly. Condition VENT CONTROL/V Air passage continuity between A and B ON No OFF Yes Operation takes less than 1 second. If NG, replace EVAP canister vent control valve. If OK, go to next step. Revision: July 2006 EC-467 J PBIB1679E 2006 Quest DTC P0447 EVAP CANISTER VENT CONTROL VALVE 7. 8. Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower. Perform step 6 again. Without CONSULT-II 1. 2. Remove EVAP canister vent control valve from EVAP canister. Check portion B of EVAP canister vent control valve for being rusted. PBIB1033E 3. Check air passage continuity and operation delay time under the following conditions. Make sure new O-ring is installed properly. Condition Air passage continuity between A and B 12V direct current supply between terminals 1 and 2 No OFF Yes Operation takes less than 1 second. 4. 5. If NG, replace EVAP canister vent control valve. If OK, go to next step. Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower. Perform step 3 again. Revision: July 2006 EC-468 PBIB1034E 2006 Quest DTC P0448 EVAP CANISTER VENT CONTROL VALVE DTC P0448 EVAP CANISTER VENT CONTROL VALVE Component Description PFP:16935 A EBS00R3W The EVAP canister vent control valve (2) is located on the EVAP canister (3) and is used to seal the canister vent. This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. This solenoid valve is used only for diagnosis, and usually remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System diagnosis. EC C D PBIB1263E E F G H BBIA0664E : Vehicle front 1. EVAP control system pressure sensor I CONSULT-II Reference Value in Data Monitor Mode EBS00R3X Specification data are reference values. MONITOR ITEM VENT CONT/V J CONDITION ● SPECIFICATION Ignition switch: ON OFF K On Board Diagnosis Logic DTC No. P0448 0448 Trouble diagnosis name EVAP canister vent control valve close Revision: July 2006 EBS00R3Y DTC detecting condition EVAP canister vent control valve remains closed under specified driving conditions. EC-469 Possible cause L ● EVAP canister vent control valve ● EVAP control system pressure sensor and the circuit ● Blocked rubber tube to EVAP canister vent control valve ● EVAP canister is saturated with water 2006 Quest M DTC P0448 EVAP CANISTER VENT CONTROL VALVE DTC Confirmation Procedure EBS00R3Z NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 7. a. b. Turn ignition switch ON and wait at least 5 seconds. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for at least 1 minute. Repeat next procedures 3 times. Increase the engine speed up to 3,000 to 3,500 rpm and keep it for 2 minutes and 50 seconds to 3 minutes. Never exceed 3 minutes. Fully released accelerator pedal and keep engine idle for about 5 seconds. If 1st trip DTC is detected, go to EC-472, "Diagnostic Procedure" SEF058Y . If 1st trip DTC is not detected, go to the next step. Repeat next procedure 20 times. Quickly increase the engine speed up to 4,000 to 4,500 rpm or more and keep it for 25 to 30 seconds. Fully released accelerator pedal and keep engine idle for at least 35 seconds. 8. If 1st trip DTC is detected, go to EC-472, "Diagnostic Procedure" . 4. 5. a. b. 6. PBIB0972E WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-470 2006 Quest DTC P0448 EVAP CANISTER VENT CONTROL VALVE Wiring Diagram EBS00R40 A EC C D E F G H I J K L M BBWA2019E Revision: July 2006 EC-471 2006 Quest DTC P0448 EVAP CANISTER VENT CONTROL VALVE Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) 0 - 1.5V For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● More than a few seconds after turning ignition switch OFF BATTERY VOLTAGE (11 - 14V) 117 LG/B EVAP canister vent control valve [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) 119 120 R/G R/G Power supply for ECM [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) Diagnostic Procedure EBS00R41 1. CHECK RUBBER TUBE 1. 2. Turn ignition switch OFF. Disconnect rubber tube connected to EVAP canister vent control valve (2). BBIA0664E : Vehicle front 1. EVAP control system pressure sensor 3. EVAP canister 3. Check the rubber tube for clogging. OK or NG OK >> GO TO 2. NG >> Clean rubber tube using an air blower. 2. CHECK EVAP CANISTER VENT CONTROL VALVE Refer to EC-474, "Component Inspection" . OK or NG OK >> GO TO 3. NG >> Replace EVAP canister vent control valve. Revision: July 2006 EC-472 2006 Quest DTC P0448 EVAP CANISTER VENT CONTROL VALVE 3. CHECK IF EVAP CANISTER SATURATED WITH WATER A Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. EC 2. Check if water will drain from the EVAP canister. Yes or No Yes >> GO TO 4. C No >> GO TO 6. 1. D PBIB1381E E 4. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.1 kg (4.6 lb). OK or NG OK >> GO TO 6. NG >> GO TO 5. F G H 5. DETECT MALFUNCTIONING PART Check the following. ● EVAP canister for damage ● EVAP hose between EVAP canister and vehicle frame for clogging or poor connection I J >> Repair hose or replace EVAP canister. 6. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR 1. 2. K Disconnect EVAP control system pressure sensor harness connector. Check connectors for water. L Water should not exist. OK or NG OK >> GO TO 7. NG >> Replace EVAP control system pressure sensor. M 7. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-485, "Component Inspection" . OK or NG OK >> GO TO 8. NG >> Replace EVAP control system pressure sensor. 8. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-473 2006 Quest DTC P0448 EVAP CANISTER VENT CONTROL VALVE Component Inspection EBS00R42 EVAP CANISTER VENT CONTROL VALVE With CONSULT-II 1. 2. Remove EVAP canister vent control valve from EVAP canister. Check portion B of EVAP canister vent control valve for being rusted. If NG, replace EVAP canister vent control valve. If OK, go to next step. Reconnect harness connectors disconnected. Turn ignition switch ON. 3. 4. PBIB1033E 5. 6. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode. Check air passage continuity and operation delay time. Make sure new O-ring is installed properly. Condition VENT CONTROL/V Air passage continuity between A and B ON No OFF Yes Operation takes less than 1 second. 7. 8. If NG, replace EVAP canister vent control valve. If OK, go to next step. Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower. Perform step 6 again. PBIB1679E Without CONSULT-II 1. 2. Remove EVAP canister vent control valve from EVAP canister. Check portion B of EVAP canister vent control valve for being rusted. PBIB1033E 3. Check air passage continuity and operation delay time under the following conditions. Make sure new O-ring is installed properly. Condition Air passage continuity between A and B 12V direct current supply between terminals 1 and 2 No OFF Yes Operation takes less than 1 second. 4. If NG, replace EVAP canister vent control valve. If OK, go to next step. Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower. Revision: July 2006 EC-474 PBIB1034E 2006 Quest DTC P0448 EVAP CANISTER VENT CONTROL VALVE 5. Perform step 3 again. A EC C D E F G H I J K L M Revision: July 2006 EC-475 2006 Quest DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR Component Description PFP:22365 EBS00R43 The EVAP control system pressure sensor (1) detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. BBIA0664E : Vehicle front 2. EVAP canister vent control valve 3. EVAP canister PBIB1207E CONSULT-II Reference Value in Data Monitor Mode EBS00R44 Specification data are reference values. MONITOR ITEM EVAP SYS PRES CONDITION ● SPECIFICATION Ignition switch: ON Approx. 1.8 - 4.8V On Board Diagnosis Logic EBS00R45 NOTE: If DTC P0451 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-536, "DTC P0643 SENSOR POWER SUPPLY" . DTC No. P0451 0451 Trouble diagnosis name DTC detecting condition EVAP control system pressure sensor performance ECM detects a sloshing signal from the EVAP control system pressure sensor Revision: July 2006 EC-476 Possible cause ● Harness or connectors ● EVAP control system pressure sensor 2006 Quest DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR DTC Confirmation Procedure EBS00R46 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC WITH CONSULT-II 1. 2. 3. A Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and wait at least 40 seconds. NOTE: Do not depress accelerator pedal even slightly. If 1st trip DTC is detected, go to EC-477, "Diagnostic Procedure" . C D E SEF194Y F WITH GST Follow the procedure “WITH CONSULT-II” above. G Diagnostic Procedure EBS00R47 1. CHECK GROUND CONNECTIONS 1. 2. H Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . I J K L M BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-477 2006 Quest DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR 2. CHECK EVPA CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER 1. Disconnect EVAP control system pressure sensor harness connector (1). BBIA0664E : Vehicle front 2. 2. EVAP canister vent control valve 3. EVAP canister Check sensor harness connector for water. Water should not exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness connector. 3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-478, "Component Inspection" . OK or NG OK >> GO TO 4. NG >> Replace EVAP control system pressure sensor. 4. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . For wiring diagram, refer to EC-481 . >> INSPECTION END Component Inspection EBS00R48 EVAP CONTROL SYSTEM PRESSURE SENSOR 1. 2. 3. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister. Always replace O-ring with a new one. Install a vacuum pump to EVAP control system pressure sensor. Turn ignition switch ON and check output voltage between ECM terminal 32 and ground under the following conditions. Applied vacuum kPa (mmHg, inHg) Voltage V Not applied 1.8 - 4.8 -26.7 (-200, -7.87) 2.1 to 2.5V lower than above value CAUTION: Always calibrate the vacuum pump gauge when using it. ● Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg). If NG, replace EVAP control system pressure sensor. ● 4. Revision: July 2006 EC-478 PBIB1173E 2006 Quest DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR Component Description PFP:25085 A EBS00R49 The EVAP control system pressure sensor (1) detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. EC C D E BBIA0664E : Vehicle front 2. EVAP canister vent control valve 3. EVAP canister F G H I PBIB1207E CONSULT-II Reference Value in Data Monitor Mode EBS00R4A J Specification data are reference values. MONITOR ITEM EVAP SYS PRES CONDITION ● SPECIFICATION Ignition switch: ON K Approx. 1.8 - 4.8V On Board Diagnosis Logic EBS00R4B NOTE: If DTC P0452 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-536, "DTC P0643 SENSOR POWER SUPPLY" . DTC No. P0452 0452 Trouble diagnosis name EVAP control system pressure sensor low input Revision: July 2006 DTC detecting condition An excessively low voltage from the sensor is sent to ECM. EC-479 L M Possible cause ● Harness or connectors (The sensor circuit is open or shorted.) ● EVAP control system pressure sensor 2006 Quest DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR DTC Confirmation Procedure EBS00R4C NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Always perform test at a temperature of 5°C (41°F) or more. WITH CONSULT-II 1. 2. 3. 4. 5. 6. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Make sure that “FUEL T/TMP SE” is more than 0°C (32°F). Start engine and wait at least 20 seconds. If 1st trip DTC is detected, go to EC-482, "Diagnostic Procedure" . SEF194Y WITH GST 1. 2. 3. 4. 5. Start engine and warm it up to normal operating temperature. Check that voltage between ECM terminal 107 (Fuel tank temperature sensor signal) and ground is less than 4.2V. Turn ignition switch OFF and wait at least 10 seconds. Start engine and wait at least 20 seconds. Select “Service $07” with GST. If 1st trip DTC is detected, go to EC-482, "Diagnostic Procedure" . PBIB1110E Revision: July 2006 EC-480 2006 Quest DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR Wiring Diagram EBS00R4D A EC C D E F G H I J K L M BBWA2258E Revision: July 2006 EC-481 2006 Quest DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 32 BR EVAP control system pressure sensor [Ignition switch: ON] Approximately 1.8 - 4.8V 48 G/O EVAP control system pressure sensor power supply [Ignition switch: ON] Approximately 5V 67 B Sensor ground ● Warm-up condition ● Idle speed [Engine is running] Approximately 0V Diagnostic Procedure EBS00R4E 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-482 2006 Quest DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR 2. CHECK CONNECTOR 1. A Disconnect EVAP control system pressure sensor (1) harness connector. EC C D BBIA0664E : Vehicle front 2. 2. EVAP canister vent control valve 3. E EVAP canister Check sensor harness connector for water. F Water should not exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness connector. G 3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT 1. 2. H Turn ignition switch ON. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT-II or tester. I Voltage: Approximately 5V OK or NG OK >> GO TO 5. NG >> GO TO 4. J K PBIB0138E 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E19, F33 ● Harness connectors B106, E138 ● Harness for open or short between EVAP control system pressure sensor and ECM ● Harness for short between EVAP control system pressure sensor and TCM M >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-483 L 2006 Quest DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR 5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. 6. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E19, F33 ● Harness connectors B106, E138 ● Harness for open or short between EVAP control system pressure sensor and ECM ● Harness for open or short between EVAP control system pressure sensor and TCM >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 32 and EVAP control system pressure sensor terminal 2. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> GO TO 8. 8. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E19, F33 ● Harness connectors B106, E138 ● Harness for open or short between EVAP control system pressure sensor and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-485, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace EVAP control system pressure sensor. Revision: July 2006 EC-484 2006 Quest DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR 10. CHECK INTERMITTENT INCIDENT A Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . EC >> INSPECTION END Component Inspection EBS00R4F EVAP CONTROL SYSTEM PRESSURE SENSOR 1. 2. 3. 4. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister. Always replace O-ring with a new one. Install a vacuum pump to EVAP control system pressure sensor. Turn ignition switch ON and check output voltage between ECM terminal 32 and ground under the following conditions. Applied vacuum kPa (mmHg, inHg) Voltage V Not applied 1.8 - 4.8 -26.7 (-200, -7.87) 2.1 to 2.5V lower than above value CAUTION: ● Always calibrate the vacuum pump gauge when using it. ● Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg). If NG, replace EVAP control system pressure sensor. C D E F G PBIB1173E H I J K L M Revision: July 2006 EC-485 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR Component Description PFP:25085 EBS00R4G The EVAP control system pressure sensor (1) detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. BBIA0664E : Vehicle front 2. EVAP canister vent control valve 3. EVAP canister PBIB1207E CONSULT-II Reference Value in Data Monitor Mode EBS00R4H Specification data are reference values. MONITOR ITEM EVAP SYS PRES CONDITION ● SPECIFICATION Ignition switch: ON Approx. 1.8 - 4.8V On Board Diagnosis Logic EBS00R4I NOTE: If DTC P0453 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-536, "DTC P0643 SENSOR POWER SUPPLY" . DTC No. P0453 0453 Trouble diagnosis name EVAP control system pressure sensor high input Revision: July 2006 DTC detecting condition An excessively high voltage from the sensor is sent to ECM. EC-486 Possible cause ● Harness or connectors (The sensor circuit is open or shorted.) ● EVAP control system pressure sensor ● EVAP canister vent control valve ● EVAP canister ● Rubber hose from EVAP canister vent control valve to vehicle frame 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR DTC Confirmation Procedure EBS00R4J A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Always perform test at a temperature of 5°C (41°F) or more. WITH CONSULT-II 1. 2. 3. 4. 5. 6. 7. C Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Make sure that “FUEL T/TMP SE” is more than 0°C (32°F). Start engine and wait at least 10 seconds. If 1st trip DTC is detected, go to EC-489, "Diagnostic Procedure" . D E F G SEF194Y WITH GST 1. 2. 3. 4. 5. H Start engine and warm it up to normal operating temperature. Check that voltage between ECM terminal 107 (Fuel tank temperature sensor signal) and ground is less than 4.2V. Turn ignition switch OFF and wait at least 10 seconds. Start engine wait at least 10 seconds. Select “Service $07” with GST. If 1st trip DTC is detected, go to EC-489, "Diagnostic Procedure" . I J K PBIB1110E L M Revision: July 2006 EC-487 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR Wiring Diagram EBS00R4K BBWA2258E Revision: July 2006 EC-488 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. A EC WIRE COLOR ITEM CONDITION DATA (DC Voltage) 32 BR EVAP control system pressure sensor [Ignition switch: ON] Approximately 1.8 - 4.8V 48 G/O EVAP control system pressure sensor power supply [Ignition switch: ON] Approximately 5V C D [Engine is running] 67 B Sensor ground ● Warm-up condition ● Idle speed Approximately 0V E Diagnostic Procedure EBS00R4L 1. CHECK GROUND CONNECTIONS 1. 2. F Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . G H I J K L M BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-489 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR 2. CHECK CONNECTOR 1. Disconnect EVAP control system pressure sensor (1) harness connector. BBIA0664E : 2. Vehicle front 2. EVAP canister vent control valve 3. EVAP canister Check sensor harness connector for water. Water should not exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness connector. 3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch ON. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT-II or tester. Voltage: Approximately 5V OK or NG OK >> GO TO 5. NG >> GO TO 4. PBIB0138E 4. DETECT MALFUNCTIONING PART Check the following. Harness connectors B106, E138 ● Harness connectors E19, F33 ● Harness for open or short between EVAP control system pressure sensor and ECM ● Harness for short between EVAP control system passenger sensor and TCM ● >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-490 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR 5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. A Turn ignition switch OFF. EC Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal C 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. D 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. E 6. DETECT MALFUNCTIONING PART F Check the following. ● Harness connectors E19, F33 ● Harness connectors B106, E138 ● Harness for open or short between EVAP control system pressure sensor and ECM ● Harness for open or short between EVAP control system pressure sensor and TCM G H >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND I SHORT 1. Check harness continuity between ECM terminal 32 and EVAP control system pressure sensor terminal 2. Refer to Wiring Diagram. J K Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> GO TO 8. L 8. DETECT MALFUNCTIONING PART M Check the following. ● Harness connectors E19, F33 ● Harness connectors B106, E138 ● Harness for open or short between EVAP control system pressure sensor and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK RUBBER TUBE 1. Disconnect rubber tube connected to EVAP canister vent control valve. 2. Check the rubber tube for clogging, vent and kinked. OK or NG OK >> GO TO 10. NG >> Clean the rubber tube using an air blower, repair or replace rubber tube. Revision: July 2006 EC-491 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR 10. CHECK EVAP CANISTER VENT CONTROL VALVE Refer to EC-467, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> Replace EVAP canister vent control valve. 11. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-493, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> Replace EVAP control system pressure sensor. 12. CHECK IF EVAP CANISTER SATURATED WITH WATER 1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. 2. Check if water will drain from the EVAP canister. Yes or No Yes >> GO TO 13. No >> GO TO 15. PBIB1381E 13. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.1 kg (4.6 lb). OK or NG OK >> GO TO 15. NG >> GO TO 14. 14. DETECT MALFUNCTIONING PART Check the following. ● EVAP canister for damage ● EVAP hose between EVAP canister and vehicle frame for clogging or poor connection >> Repair hose or replace EVAP canister. 15. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-492 2006 Quest DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR Component Inspection EBS00R4M A Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister. Always replace O-ring, replace it with a new one. EC Install a vacuum pump to EVAP control system pressure sensor. Turn ignition switch ON and check output voltage between ECM terminal 32 and ground under the following conditions. C EVAP CONTROL SYSTEM PRESSURE SENSOR 1. 2. 3. 4. Applied vacuum kPa (mmHg, inHg) Voltage V Not applied 1.8 - 4.8 -26.7 (-200, -7.87) 2.1 to 2.5V lower than above value CAUTION: ● Always calibrate the vacuum pump gauge when using it. ● Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg). If NG, replace EVAP control system pressure sensor. D E PBIB1173E F G H I J K L M Revision: July 2006 EC-493 2006 Quest DTC P0455 EVAP CONTROL SYSTEM DTC P0455 EVAP CONTROL SYSTEM On Board Diagnosis Logic PFP:14950 EBS00R4N This diagnosis detects a very large leak (fuel filler cap fell off etc.) in EVAP system between the fuel tank and EVAP canister purge volume control solenoid valve. PBIB1026E DTC No. P0455 0455 Trouble diagnosis name EVAP control system gross leak detected DTC detecting condition EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly. Possible cause ● Fuel filler cap remains open or fails to close. ● Incorrect fuel tank vacuum relief valve ● Incorrect fuel filler cap used ● Foreign matter caught in fuel filler cap. ● Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve. ● Foreign matter caught in EVAP canister vent control valve. ● EVAP canister or fuel tank leaks ● EVAP purge line (pipe and rubber tube) leaks ● EVAP purge line rubber tube bent. ● Loose or disconnected rubber tube ● EVAP canister vent control valve and the circuit ● EVAP canister purge volume control solenoid valve and the circuit ● Fuel tank temperature sensor ● O-ring of EVAP canister vent control valve is missing or damaged. ● EVAP control system pressure sensor ● Refueling EVAP vapor cut valve ● ORVR system leaks CAUTION: ● Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on. ● If the fuel filler cap is not tightened properly, the MIL may come on. ● Use only a genuine NISSAN rubber tube as a replacement. Revision: July 2006 EC-494 2006 Quest DTC P0455 EVAP CONTROL SYSTEM DTC Confirmation Procedure EBS00R4O A CAUTION: Never remove fuel filler cap during the DTC Confirmation Procedure. NOTE: ● Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve EC properly. ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait C at least 10 seconds before conducting the next test. TESTING CONDITION: ● Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is D placed on flat level surface. ● Open engine hood before conducting the following procedures. WITH CONSULT-II 1. 2. 3. 4. 5. 6. E Tighten fuel filler cap securely until ratcheting sound is heard. Turn ignition switch ON. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Make sure that the following conditions are met. COOLAN TEMP/S: 0 - 70°C (32 - 158°F) INT/A TEMP SE: 0 - 60°C (32 - 140°F) Select “EVAP SML LEAK P0442/P1442” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II. Follow the instruction displayed. F G H I J K PBIB0829E 7. NOTE: If the engine speed cannot be maintained within the range displayed on the CONSULT-II screen, go to EC-75, "Basic Inspection" . Make sure that “OK” is displayed. If “NG” is displayed, select “SELF-DIAG RESULTS” mode and make sure that “EVAP GROSS LEAK [P0455]” is displayed. If it is displayed, refer to EC-496, "Diagnostic Procedure" . If P0442 is displayed, perform Diagnostic Procedure for DTC P0442, EC-441, "Diagnostic Procedure" . SEC763C Revision: July 2006 EC-495 2006 Quest L M DTC P0455 EVAP CONTROL SYSTEM WITH GST NOTE: Be sure to read the explanation of Driving Pattern on EC-61, "Driving Pattern" before driving vehicle. 1. Start engine. 2. Drive vehicle according to Driving Pattern, EC-61, "Driving Pattern" . 3. Stop vehicle. 4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. 5. Select “Service $07” with GST. ● If P0441 is displayed on the screen, go to EC-436, "Diagnostic Procedure" . ● If P0442 is displayed on the screen, go to EC-441, "Diagnostic Procedure" . ● If P0455 is displayed on the screen, go to EC-496, "Diagnostic Procedure" . Diagnostic Procedure EBS00R4P 1. CHECK FUEL FILLER CAP DESIGN 1. Turn ignition switch OFF. 2. Check for genuine NISSAN fuel filler cap design. OK or NG OK >> GO TO 2. NG >> Replace with genuine NISSAN fuel filler cap. SEF915U 2. CHECK FUEL FILLER CAP INSTALLATION Check that the cap is tightened properly by rotating the cap clockwise. OK or NG OK >> GO TO 3. NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. 2. Retighten until ratcheting sound is heard. 3. CHECK FUEL FILLER CAP FUNCTION Check for air releasing sound while opening the fuel filler cap. OK or NG OK >> GO TO 5. NG >> GO TO 4. 4. CHECK FUEL TANK VACUUM RELIEF VALVE Refer to EC-37, "FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)" . OK or NG OK >> GO TO 5. NG >> Replace fuel filler cap with a genuine one. Revision: July 2006 EC-496 2006 Quest DTC P0455 EVAP CONTROL SYSTEM 5. CHECK EVAP PURGE LINE A Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or disconnection. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . EC OK or NG OK >> GO TO 6. NG >> Repair or reconnect the hose. C 6. CLEAN EVAP PURGE LINE D Clean EVAP purge line (pipe and rubber tube) using air blower. >> GO TO 7. E 7. CHECK EVAP CANISTER VENT CONTROL VALVE Check the following. ● EVAP canister vent control valve is installed properly. Refer to EC-38, "Removal and Installation" . ● EVAP canister vent control valve. Refer to EC-467, "Component Inspection" . OK or NG OK >> GO TO 8. NG >> Repair or replace EVAP canister vent control valve and O-ring. F G H 8. INSTALL THE PRESSURE PUMP I To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely. NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking. J K L BBIA0320E M SEF916U With CONSULT-II >>GO TO 9. Without CONSULT-II>>GO TO 10. Revision: July 2006 EC-497 2006 Quest DTC P0455 EVAP CONTROL SYSTEM 9. CHECK FOR EVAP LEAK With CONSULT-II Turn ignition switch ON. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-II. 3. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph. CAUTION: ● Never use compressed air or a high pressure pump. 1. 2. ● Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system. PEF917U 4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 11. NG >> Repair or replace. SEF200U Revision: July 2006 EC-498 2006 Quest DTC P0455 EVAP CONTROL SYSTEM 10. CHECK FOR EVAP LEAK 1. 2. A Without CONSULT-II Turn ignition switch OFF. EC Apply 12 volts DC to EVAP canister vent control valve (2). The valve will close. (Continue to apply 12 volts until the end of test.) C D E BBIA0664E : 3. Vehicle front 1. EVAP control system pressure sensor 3. F EVAP canister Pressurize the EVAP line using pressure pump with 1.3 to 2.7 kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove pump and EVAP service port adapter. CAUTION: ● Never use compressed air or a high pressure pump. G H Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system. 4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 12. NG >> Repair or replace. ● I J K SEF200U 11. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION L With CONSULT-II Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode. Touch “Qu” on CONSULT-II screen to increase “PURG VOL CONT/V” opening to 100%. 5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. OK or NG OK >> GO TO 14. NG >> GO TO 13. 1. 2. 3. 4. PBIB1678E Revision: July 2006 EC-499 2006 Quest M DTC P0455 EVAP CONTROL SYSTEM 12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION 1. 2. 3. 4. 5. Without CONSULT-II Start engine and warm it up to normal operating temperature. Stop engine. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine and let it idle for at least 80 seconds. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. Vacuum should exist. OK or NG OK >> GO TO 15. NG >> GO TO 13. 13. CHECK VACUUM HOSE Check vacuum hoses for clogging or disconnection. Refer to EC-109, "Vacuum Hose Drawing" . OK or NG OK (With CONSULT-II)>>GO TO 14. OK (Without CONSULT-II)>>GO TO 15. NG >> Repair or reconnect the hose. 14. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II 1. Start engine. 2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that engine speed varies according to the valve opening. OK or NG OK >> GO TO 16. NG >> GO TO 15. PBIB1678E 15. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to EC-460, "Component Inspection" . OK or NG OK >> GO TO 16. NG >> Replace EVAP canister purge volume control solenoid valve. 16. CHECK FUEL TANK TEMPERATURE SENSOR Refer to EC-360, "Component Inspection" . OK or NG OK >> GO TO 17. NG >> Replace fuel level sensor unit. Revision: July 2006 EC-500 2006 Quest DTC P0455 EVAP CONTROL SYSTEM 17. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR A Refer to EC-485, "Component Inspection" . OK or NG OK >> GO TO 18. NG >> Replace EVAP control system pressure sensor. EC 18. CHECK EVAP/ORVR LINE C Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper connection. For location, refer to EC-41, "ON BOARD REFUELING VAPOR RECOVERY (ORVR)" . OK or NG OK >> GO TO 19. NG >> Repair or replace hoses and tubes. D E 19. CHECK RECIRCULATION LINE Check recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, looseness and improper connection. OK or NG OK >> GO TO 20. NG >> Repair or replace hose, tube or filler neck tube. 20. CHECK REFUELING EVAP VAPOR CUT VALVE F G H Refer to EC-45, "Component Inspection" . OK or NG OK >> GO TO 21. NG >> Replace refueling EVAP vapor cut valve with fuel tank. I 21. CHECK INTERMITTENT INCIDENT J Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . K >> INSPECTION END L M Revision: July 2006 EC-501 2006 Quest DTC P0456 EVAP CONTROL SYSTEM DTC P0456 EVAP CONTROL SYSTEM On Board Diagnosis Logic PFP:14950 EBS00R4Q This diagnosis detects very small leaks in the EVAP line between fuel tank and EVAP canister purge volume control solenoid valve, using the intake manifold vacuum in the same way as conventional EVAP small leak diagnosis. If ECM judges a leak which corresponds to a very small leak, the very small leak P0456 will be detected. If ECM judges a leak equivalent to a small leak, EVAP small leak P0442 will be detected. If ECM judges there are no leaks, the diagnosis will be OK. PBIB1026E DTC No. P0456 0456 Trouble diagnosis name Evaporative emission control system very small leak (negative pressure check) Revision: July 2006 DTC detecting condition ● ● EVAP system has a very small leak. EVAP system does not operate properly. EC-502 Possible cause ● Incorrect fuel tank vacuum relief valve ● Incorrect fuel filler cap used ● Fuel filler cap remains open or fails to close. ● Foreign matter caught in fuel filler cap. ● Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve. ● Foreign matter caught in EVAP canister vent control valve. ● EVAP canister or fuel tank leaks ● EVAP purge line (pipe and rubber tube) leaks ● EVAP purge line rubber tube bent ● Loose or disconnected rubber tube ● EVAP canister vent control valve and the circuit ● EVAP canister purge volume control solenoid valve and the circuit ● Fuel tank temperature sensor ● O-ring of EVAP canister vent control valve is missing or damaged ● EVAP canister is saturated with water ● EVAP control system pressure sensor ● Refueling EVAP vapor cut valve ● ORVR system leaks ● Fuel level sensor and the circuit ● Foreign matter caught in EVAP canister purge volume control solenoid valve 2006 Quest DTC P0456 EVAP CONTROL SYSTEM CAUTION: ● Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, A the MIL may come on. ● If the fuel filler cap is not tightened properly, the MIL may come on. ● Use only a genuine NISSAN rubber tube as a replacement. EC DTC Confirmation Procedure EBS00R4R NOTE: ● If DTC P0456 is displayed with P0442, first perform trouble diagnosis for DTC P0456. ● After repair, make sure that the hoses and clips are installed properly. ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: ● Open engine hood before conducting following procedure. ● If any of following conditions are met just before the DTC confirmation procedure, leave the vehicle for more than 1 hour. – Fuel filler cap is removed. – Refilled or drained the fuel. – EVAP component parts is/are removed. ● Before performing the following procedure, confirm that battery voltage is more than 11V at idle. C D E F G H I J K L M Revision: July 2006 EC-503 2006 Quest DTC P0456 EVAP CONTROL SYSTEM WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Make sure the following conditions are met. FUEL LEVEL SE: 0.25 - 1.4V COOLAN TEMP/S: 0 - 32°C (32 - 90°F) FUEL T/TMP SE: 0 - 35°C (32 - 95°F) INT/A TEMP SE: More than 0°C (32°F) If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle) or refilling/draining fuel until the output voltage condition of the “FUEL LEVEL SE” meets within the range above and leave the vehicle for more than 1 hour. Then start from step 1). Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON. Select “EVAP V/S LEAK P0456/P1456” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II. Follow the instruction displayed. PBIB0837E 6. Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-505, "Diagnostic Procedure" . NOTE: ● If the engine speed cannot be maintained within the range displayed on CONSULT-II screen, go to EC-75, "Basic Inspection" . ● Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly. Overall Function Check EBS00R4S WITH GST Use this procedure to check the overall function of the EVAP very small leak function. During this check, a DTC might not be confirmed. CAUTION: ● Never use compressed air, doing so may damage the EVAP system. ● Do not start engine. ● 1. Do not exceeded 4.12 kPa (0.042 kg/cm2 , 0.6 psi). Attach the EVAP service port adapter securely to the EVAP service port. BBIA0320E Revision: July 2006 EC-504 2006 Quest DTC P0456 EVAP CONTROL SYSTEM 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Set the pressure pump and a hose. Also set a vacuum gauge via 3-way connector and a hose. Turn ignition switch ON. Connect GST and select “Service $08”. Using “Service $08” control the EVAP canister vent control valve (close). Apply pressure and make sure the following conditions are satisfied. Pressure to be applied: 2.7 kPa (20 mmHg, 0.79 inHg) Time to be waited after the pressure drawn in to the EVAP system and the pressure to be dropped: 60 seconds and the pressure should not be dropped more than 0.4 kPa (3 mmHg, 0.12 inHg). If NG, go to EC-505, "Diagnostic Procedure" . If OK, go to next step. Disconnect GST. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Restart engine and let it idle for 90 seconds. Keep engine speed at 2,000 rpm for 30 seconds. Turn ignition switch OFF. NOTE: For more information, refer to GST instruction manual. A EC C SEF462UI D E F G H Diagnostic Procedure EBS00R4T 1. CHECK FUEL FILLER CAP DESIGN I 1. Turn ignition switch OFF. 2. Check for genuine NISSAN fuel filler cap design. OK or NG OK >> GO TO 2. NG >> Replace with genuine NISSAN fuel filler cap. J K L SEF915U 2. CHECK FUEL FILLER CAP INSTALLATION M Check that the cap is tightened properly by rotating the cap clockwise. OK or NG OK >> GO TO 3. NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. 2. Retighten until ratcheting sound is heard. 3. CHECK FUEL FILLER CAP FUNCTION Check for air releasing sound while opening the fuel filler cap. OK or NG OK >> GO TO 5. NG >> GO TO 4. Revision: July 2006 EC-505 2006 Quest DTC P0456 EVAP CONTROL SYSTEM 4. CHECK FUEL TANK VACUUM RELIEF VALVE Refer to EC-37, "FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)" . OK or NG OK >> GO TO 5. NG >> Replace fuel filler cap with a genuine one. 5. INSTALL THE PRESSURE PUMP To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely. NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking. BBIA0320E SEF916U With CONSULT-II>>GO TO 6. Without CONSULT-II>>GO TO 7. Revision: July 2006 EC-506 2006 Quest DTC P0456 EVAP CONTROL SYSTEM 6. CHECK FOR EVAP LEAK 1. 2. 3. A With CONSULT-II Turn ignition switch ON. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-II. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph. CAUTION: ● Never use compressed air or a high pressure pump. ● EC C Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system. D E PEF917U F 4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 8. NG >> Repair or replace. G H SEF200U I J K L M Revision: July 2006 EC-507 2006 Quest DTC P0456 EVAP CONTROL SYSTEM 7. CHECK FOR EVAP LEAK 1. 2. Without CONSULT-II Turn ignition switch OFF. Apply 12 volts DC to EVAP canister vent control valve (2). The valve will close. (Continue to apply 12 volts until the end of test.) BBIA0664E : 3. Vehicle front 1. EVAP control system pressure sensor 3. EVAP canister Pressurize the EVAP line using pressure pump with 1.3 to 2.7 kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove pump and EVAP service port adapter. CAUTION: ● Never use compressed air or a high pressure pump. Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in the system. 4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 8. NG >> Repair or replace. ● SEF200U 8. CHECK EVAP CANISTER VENT CONTROL VALVE Check the following. ● EVAP canister vent control valve is installed properly. Refer to EC-38, "Removal and Installation" . ● EVAP canister vent control valve. Refer to EC-467, "Component Inspection" . OK or NG OK >> GO TO 9. NG >> Repair or replace EVAP canister vent control valve and O-ring. Revision: July 2006 EC-508 2006 Quest DTC P0456 EVAP CONTROL SYSTEM 9. CHECK IF EVAP CANISTER SATURATED WITH WATER A Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. EC 2. Does water drain from the EVAP canister? Yes or No Yes >> GO TO 10. C No (With CONSULT-II)>>GO TO 12. No (Without CONSULT-II)>>GO TO 13. 1. D PBIB1381E E 10. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.1 kg (4.6 lb). OK or NG OK (With CONSULT-II)>>GO TO 12. OK (Without CONSULT-II)>>GO TO 13. NG >> GO TO 11. F G H 11. DETECT MALFUNCTIONING PART I Check the following. ● EVAP canister for damage ● EVAP hose between EVAP canister and vehicle frame for clogging or poor connection J >> Repair hose or replace EVAP canister. K 12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION With CONSULT-II Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode. Touch “Qu” on CONSULT-II screen to increase “PURG VOL CONT/V” opening to 100%. 5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. OK or NG OK >> GO TO 15. NG >> GO TO 14. 1. 2. 3. 4. PBIB1678E Revision: July 2006 EC-509 2006 Quest L M DTC P0456 EVAP CONTROL SYSTEM 13. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION 1. 2. 3. 4. 5. Without CONSULT-II Start engine and warm it up to normal operating temperature. Stop engine. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine and let it idle for at least 80 seconds. Check vacuum hose for vacuum when revving engine up to 2,000 rpm. Vacuum should exist. OK or NG OK >> GO TO 16. NG >> GO TO 14. 14. CHECK VACUUM HOSE Check vacuum hoses for clogging or disconnection. Refer to EC-109, "Vacuum Hose Drawing" . OK or NG OK >> GO TO 15. NG >> Repair or reconnect the hose. 15. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to EC-460, "Component Inspection" . OK or NG OK >> GO TO 16. NG >> Replace EVAP canister purge volume control solenoid valve. 16. CHECK FUEL TANK TEMPERATURE SENSOR Refer to EC-360, "Component Inspection" . OK or NG OK >> GO TO 17. NG >> Replace fuel level sensor unit. 17. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to EC-485, "Component Inspection" . OK or NG OK >> GO TO 18. NG >> Replace EVAP control system pressure sensor. 18. CHECK EVAP PURGE LINE Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection. Refer to EC-35, "EVAPORATIVE EMISSION LINE DRAWING" . OK or NG OK >> GO TO 19. NG >> Repair or reconnect the hose. 19. CLEAN EVAP PURGE LINE Clean EVAP purge line (pipe and rubber tube) using air blower. >> GO TO 20. Revision: July 2006 EC-510 2006 Quest DTC P0456 EVAP CONTROL SYSTEM 20. CHECK EVAP/ORVR LINE A Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper connection. For location, refer to EC-41, "ON BOARD REFUELING VAPOR RECOVERY (ORVR)" . EC OK or NG OK >> GO TO 21. NG >> Repair or replace hoses and tubes. C CHECK RECIRCULATION LINE 21. Check recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, looseness and improper connection. OK or NG OK >> GO TO 22. NG >> Repair or replace hose, tube or filler neck tube. D E 22. CHECK REFUELING EVAP VAPOR CUT VALVE F Refer to EC-45, "Component Inspection" . OK or NG OK >> GO TO 23. NG >> Replace refueling EVAP vapor cut valve with fuel tank. G 23. CHECK FUEL LEVEL SENSOR H Refer to DI-20, "FUEL LEVEL SENSOR UNIT CHECK" . OK or NG OK >> GO TO 24. NG >> Replace fuel level sensor unit. I 24. CHECK INTERMITTENT INCIDENT J Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . K >> INSPECTION END L M Revision: July 2006 EC-511 2006 Quest DTC P0460 FUEL LEVEL SENSOR DTC P0460 FUEL LEVEL SENSOR Component Description PFP:25060 EBS00R4U The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combination meter sends the fuel level sensor signal to the ECM through CAN communication line. It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output voltage changes depending on the movement of the fuel mechanical float. BBIA0081E On Board Diagnosis Logic EBS00R4V NOTE: ● If DTC P0460 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC P0460 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . When the vehicle is parked, naturally the fuel level in the fuel tank is stable. It means that output signal of the fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunction is detected. DTC No. P0460 0460 Trouble diagnosis name Fuel level sensor circuit noise DTC detecting condition Even though the vehicle is parked, a signal being varied is sent from the fuel level sensor to ECM. DTC Confirmation Procedure Possible cause ● Harness or connectors (The CAN communication line is open or shorted) ● Harness or connectors (The sensor circuit is open or shorted) ● Combination meter ● Fuel level sensor EBS00R4W NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and wait maximum of 2 consecutive minutes. If 1st trip DTC is detected, go to EC-513, "Diagnostic Procedure" . SEF195Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-512 2006 Quest DTC P0460 FUEL LEVEL SENSOR Diagnostic Procedure EBS00R4X 1. CHECK FUEL GAUGE OPERATION A Refer to DI-12, "Meter/Gauge Operation and Odo/Trip Meter" . OK or NG OK >> GO TO 2. NG >> Follow the instruction of DI-12, "Meter/Gauge Operation and Odo/Trip Meter" . EC C 2. CHECK FUEL LEVEL SENSOR AND CIRCUIT Refer to DI-17, "Fuel Level Sensor Unit Inspection" . OK or NG OK >> GO TO 3. NG >> Repair or replace malfunctioning parts. D E 3. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . F >> INSPECTION END G Removal and Installation EBS00R4Y FUEL LEVEL SENSOR Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . H I J K L M Revision: July 2006 EC-513 2006 Quest DTC P0461 FUEL LEVEL SENSOR DTC P0461 FUEL LEVEL SENSOR Component Description PFP:25060 EBS00R4Z The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combination meter sends the fuel level sensor signal to the ECM through CAN communication line. It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output voltage changes depending on the movement of the fuel mechanical float. BBIA0081E On Board Diagnosis Logic EBS00R50 NOTE: ● If DTC P0461 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC P0461 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . Driving long distances naturally affect fuel gauge level. This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has been driven. DTC No. P0461 0461 Trouble diagnosis name Fuel level sensor circuit range/performance DTC detecting condition The output signal of the fuel level sensor does not change within the specified range even though the vehicle has been driven a long distance. Overall Function Check Possible cause ● Harness or connectors (The CAN communication line is open or shorted) ● Harness or connectors (The sensor circuit is open or shorted) ● Combination meter ● Fuel level sensor EBS00R51 Use this procedure to check the overall function of the fuel level sensor function. During this check, a 1st trip DTC might not be confirmed. WARNING: When performing following procedure, be sure to observe the handling of the fuel. Refer to FL-8, "FUEL TANK" . TESTING CONDITION: Before starting overall function check, preparation of draining fuel and refilling fuel is required. WITH CONSULT-II NOTE: Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/ 8 Imp gal) in advance. 1. Prepare a fuel container and a spare hose. 2. Release fuel pressure from fuel line, refer to EC-84, "FUEL PRESSURE RELEASE" . 3. Remove the fuel feed hose on the fuel level sensor unit. 4. Connect a spare fuel hose where the fuel feed hose was removed. 5. Turn ignition switch OFF and wait at least 10 seconds then turn ON. 6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode with CONSULT-II. Revision: July 2006 EC-514 2006 Quest DTC P0461 FUEL LEVEL SENSOR 7. 8. 9. 10. 11. 12. 13. Check “FUEL LEVEL SE” output voltage and note it. Select “FUEL PUMP” in “ACTIVE TEST” mode with CONSULTII. Touch “ON” and drain fuel approximately 30 (7-7/8 US gal, 65/8 Imp gal) and stop it. Check “FUEL LEVEL SE” output voltage and note it. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal). Check “FUEL LEVEL SE” output voltage and note it. Confirm whether the voltage changes more than 0.03V during step 7 to 10 and 10 to 12. If NG, go to EC-515, "Diagnostic Procedure" . A EC C SEF195Y D WITH GST NOTE: Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8 Imp gal) in advance. 1. Prepare a fuel container and a spare hose. 2. Release fuel pressure from fuel line. Refer to EC-84, "FUEL PRESSURE RELEASE" . 3. Remove the fuel feed hose on the fuel level sensor unit. 4. Connect a spare fuel hose where the fuel feed hose was removed. 5. Turn ignition switch ON. 6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment. 7. Confirm that the fuel gauge indication varies. 8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal). 9. Confirm that the fuel gauge indication varies. 10. If NG, go to EC-515, "Diagnostic Procedure" . Diagnostic Procedure E F G H I EBS00R52 1. CHECK FUEL GAUGE OPERATION J Refer to DI-12, "Meter/Gauge Operation and Odo/Trip Meter" . OK or NG OK >> GO TO 2. NG >> Follow the instruction of DI-12, "Meter/Gauge Operation and Odo/Trip Meter" . K L 2. CHECK FUEL LEVEL SENSOR AND CIRCUIT Refer to DI-17, "Fuel Level Sensor Unit Inspection" . OK or NG OK >> GO TO 3. NG >> Repair or replace malfunctioning parts. M 3. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Removal and Installation EBS00R53 FUEL LEVEL SENSOR Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Revision: July 2006 EC-515 2006 Quest DTC P0462, P0463 FUEL LEVEL SENSOR DTC P0462, P0463 FUEL LEVEL SENSOR Component Description PFP:25060 EBS00R54 The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combination meter sends the fuel level sensor signal to the ECM through CAN communication line. It consists of two parts, one is mechanical float and the other is variable resistor. Fuel level sensor output voltage changes depending on the movement of the fuel mechanical float. BBIA0081E On Board Diagnosis Logic EBS00R55 NOTE: ● If DTC P0462 or P0463 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC P0462 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . This diagnosis indicates the former, to detect open or short circuit malfunction. DTC No. Trouble diagnosis name DTC detecting condition P0462 0462 Fuel level sensor circuit low input An excessively low voltage is sent from the sensor is sent to ECM. P0463 0463 Fuel level sensor circuit high input An excessively high voltage is sent from the sensor is sent to ECM. DTC Confirmation Procedure Possible cause ● Harness or connectors (The CAN communication line is open or shorted) ● Harness or connectors (The sensor circuit is open or shorted) ● Combination meter ● Fuel level sensor EBS00R56 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11V at ignition switch ON. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Wait at least 5 seconds. If 1st trip DTC is detected, go to EC-517, "Diagnostic Procedure" . SEF195Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-516 2006 Quest DTC P0462, P0463 FUEL LEVEL SENSOR Diagnostic Procedure EBS00R57 1. CHECK FUEL GAUGE OPERATION A Refer to DI-12, "Meter/Gauge Operation and Odo/Trip Meter" . OK or NG OK >> GO TO 2. NG >> Follow the instruction of DI-12, "Meter/Gauge Operation and Odo/Trip Meter" . EC C 2. CHECK FUEL LEVEL SENSOR AND CIRCUIT Refer to DI-17, "Fuel Level Sensor Unit Inspection" . OK or NG OK >> GO TO 3. NG >> Repair or replace malfunctioning parts. D E 3. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . F >> INSPECTION END G Removal and Installation EBS00R58 FUEL LEVEL SENSOR Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . H I J K L M Revision: July 2006 EC-517 2006 Quest DTC P0500 VSS DTC P0500 VSS Description PFP:32702 EBS00R59 NOTE: ● If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC P0500 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control unit)” by CAN communication line. The combination meter then sends the signal to the ECM by CAN communication line. On Board Diagnosis Logic DTC No. P0500 0500 Trouble diagnosis name Vehicle speed sensor EBS00R5A DTC detecting condition The almost 0 km/h (0 MPH) signal from vehicle speed sensor is sent to ECM even when vehicle is being driven. DTC Confirmation Procedure Possible cause ● Harness or connectors (The CAN communication line is open or shorted) ● Harness or connectors (The vehicle speed signal circuit is open or shorted) ● Wheel sensor ● Combination meter ● ABS actuator and electric unit (control unit) EBS00R5B CAUTION: Always drive vehicle at a safe speed. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Steps 1 and 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle. WITH CONSULT-II 1. 2. 3. 4. 5. Start engine (TCS switch or VDC switch OFF). Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT-II. The vehicle speed on CONSULTII should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position. If NG, go to EC-519, "Diagnostic Procedure" . If OK, go to following step. Select “DATA MONITOR” mode with CONSULT-II. Warm engine up to normal operating temperature. Maintain the following conditions for at least 60 consecutive seconds. ENG SPEED 1,600 - 6,000 rpm COOLAN TEMP/S More than 70°C (158°F) B/FUEL SCHDL 5.5 - 31.8 msec (4 - speed A/T models) 4.4 - 31.8 msec (5 - speed A/T models) Shift lever Except P or N position PW/ST SIGNAL OFF 6. If 1st trip DTC is detected, go to EC-519, "Diagnostic Procedure" . Revision: July 2006 EC-518 SEF196Y 2006 Quest DTC P0500 VSS Overall Function Check EBS00R5C Use this procedure to check the overall function of the vehicle speed sensor circuit. During this check, a 1st trip DTC might not be confirmed. WITH GST 1. 2. 3. 4. A EC Lift up drive wheels. Start engine. Read vehicle speed sensor signal in “Service $01” with GST. The vehicle speed sensor on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position. If NG, go to EC-519, "Diagnostic Procedure" . Diagnostic Procedure C D EBS00R5D 1. CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)” E Refer to BRC-56, "TROUBLE DIAGNOSIS" (models with VDC) or BRC-10, "TROUBLE DIAGNOSIS" (models without VDC). OK or NG OK >> GO TO 2. NG >> Repair or replace. F G 2. COMBINATION METER Check combination meter function. Refer to DI-5, "COMBINATION METERS" . H >> INSPECTION END I J K L M Revision: July 2006 EC-519 2006 Quest DTC P0506 ISC SYSTEM DTC P0506 ISC SYSTEM Description PFP:23781 EBS00R5E NOTE: If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC. The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is varied to allow for optimum control of the engine idling speed. The ECM calculates the actual engine speed from signals of crankshaft position sensor (POS) and camshaft position sensor (PHASE). The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily. The optimum value stored in the ECM is determined by taking into consideration various engine conditions, such as during warming up, deceleration, and engine load (air conditioner, power steering and cooling fan operation, etc.). On Board Diagnosis Logic DTC No. P0506 0506 EBS00R5F Trouble diagnosis name Idle speed control system RPM lower than expected DTC detecting condition The idle speed is less than the target idle speed by 100 rpm or more. DTC Confirmation Procedure Possible cause ● Electric throttle control actuator ● Intake air leak EBS00R5G NOTE: ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. ● If the target idle speed is out of the specified value, perform Idle Air Volume Learning, EC-82 , before conducting DTC Confirmation Procedure. For the target idle speed, refer to the Service Data and Specifications (SDS), EC-728 . TESTING CONDITION: ● Before performing the following procedure, confirm that battery voltage is more than 11V at idle. ● Always perform the test at a temperature above −10°C (14°F). WITH CONSULT-II 1. 2. 3. 4. 5. 6. Open engine hood. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON again and select “DATA MONITOR” mode with CONSULT-II. Start engine and run it for at least 1 minute at idle speed. If 1st trip DTC is detected, go to EC-521, "Diagnostic Procedure" . SEF174Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-520 2006 Quest DTC P0506 ISC SYSTEM Diagnostic Procedure EBS00R5H 1. CHECK INTAKE AIR LEAK A 1. Start engine and let it idle. 2. Listen for an intake air leak after the mass air flow sensor. OK or NG OK >> GO TO 2. NG >> Discover air leak location and repair. EC C 2. REPLACE ECM 1. 2. 3. 4. 5. 6. 7. Stop engine. Replace ECM. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . Perform EC-81, "VIN Registration" . Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . D E F G >> INSPECTION END H I J K L M Revision: July 2006 EC-521 2006 Quest DTC P0507 ISC SYSTEM DTC P0507 ISC SYSTEM Description PFP:23781 EBS00R5I NOTE: If DTC P0507 is displayed with other DTC, first perform the trouble diagnosis for the other DTC. The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is varied to allow for optimum control of the engine idling speed. The ECM calculates the actual engine speed from signals of crankshaft position sensor (POS) and camshaft position sensor (PHASE). The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily. The optimum value stored in the ECM is determined by taking into consideration various engine conditions, such as during warming up, deceleration, and engine load (air conditioner, power steering and cooling fan operation, etc.). On Board Diagnosis Logic DTC No. P0507 0507 EBS00R5J Trouble diagnosis name Idle speed control system RPM higher than expected DTC detecting condition The idle speed is more than the target idle speed by 200 rpm or more. DTC Confirmation Procedure Possible cause ● Electric throttle control actuator ● Intake air leak ● PCV system EBS00R5K NOTE: ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. ● If the target idle speed is out of the specified value, perform Idle Air Volume Learning, EC-82 , before conducting DTC Confirmation Procedure. For the target idle speed, refer to the “Service Data and Specifications (SDS)”, EC-728 . TESTING CONDITION: ● Before performing the following procedure, confirm that battery voltage is more than 11V at idle. ● Always perform the test at a temperature above −10°C (14°F). WITH CONSULT-II 1. 2. 3. 4. 5. 6. Open engine hood. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON again and select “DATA MONITOR” mode with CONSULT-II. Start engine and run it for at least 1 minute at idle speed. If 1st trip DTC is detected, go to EC-523, "Diagnostic Procedure" . SEF174Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-522 2006 Quest DTC P0507 ISC SYSTEM Diagnostic Procedure EBS00R5L 1. CHECK PCV HOSE CONNECTION A Confirm that PCV hose is connected correctly. OK or NG OK >> GO TO 2. NG >> Repair or replace. EC C 2. CHECK INTAKE AIR LEAK 1. Start engine and let it idle. 2. Listen for an intake air leak after the mass air flow sensor. OK or NG OK >> GO TO 3. NG >> Discover air leak location and repair. D E 3. REPLACE ECM 1. 2. 3. 4. 5. 6. 7. F Stop engine. Replace ECM. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . Perform EC-81, "VIN Registration" . Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . G H I >> INSPECTION END J K L M Revision: July 2006 EC-523 2006 Quest DTC P0550 PSP SENSOR DTC P0550 PSP SENSOR Component Description PFP:49763 EBS00R5M Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. This sensor is a potentiometer which transforms the power steering load into output voltage, and emits the voltage signal to the ECM. The ECM controls the electric throttle control actuator and adjusts the throttle valve opening angle to increase the engine speed and adjusts the idle speed for the increased load. BBIA0241E CONSULT-II Reference Value in Data Monitor Mode EBS00R5N Specification data are reference values. MONITOR ITEM PW/ST SIGNAL CONDITION ● Engine: After warming up, idle the engine SPECIFICATION Steering wheel is not being turned. OFF Steering wheel is being turned. ON On Board Diagnosis Logic EBS00R5O The MIL will not light up for this diagnosis. NOTE: If DTC P0550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-536, "DTC P0643 SENSOR POWER SUPPLY" . DTC No. P0550 0550 Trouble diagnosis name Power steering pressure sensor circuit DTC detecting condition An excessively low or high voltage from the sensor is sent to ECM. DTC Confirmation Procedure Possible cause ● Harness or connectors (The sensor circuit is open or shorted) ● Power steering pressure sensor EBS00R5P NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for at least 5 seconds. If 1st trip DTC is detected, go to EC-526, "Diagnostic Procedure" . WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-524 2006 Quest DTC P0550 PSP SENSOR Wiring Diagram EBS00R5Q A EC C D E F G H I J K L M BBWA2006E Revision: July 2006 EC-525 2006 Quest DTC P0550 PSP SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION [Engine is running] 12 W Power steering pressure sensor ● Steering wheel is being turned. [Engine is running] ● Steering wheel is not being turned. DATA (DC Voltage) 0.5 - 4.5V 0.4 - 0.8V [Engine is running] 67 68 B BR/W Sensor ground Power steering pressure sensor power supply ● Warm-up condition ● Idle speed [Ignition switch ON] Approximately 0V Approximately 5V Diagnostic Procedure EBS00R5R 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-526 2006 Quest DTC P0550 PSP SENSOR 2. CHECK PSP SENSOR POWER SUPPLY CIRCUIT 1. 2. A Disconnect Power steering pressure (PSP) sensor harness connector. Turn ignition switch ON. EC C D BBIA0241E 3. Check voltage between PSP sensor terminal 3 and ground with CONSULT-II or tester. E Voltage: Approximately 5V F OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. G SEF479Y H 3. CHECK PSP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between PSP sensor terminal 1 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. I J K 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. L 4. DETECT MALFUNCTIONING PART M Check the following. ● Harness connectors E19, F33 ● Harness for open or short between power steering pressure sensor and ECM ● Harness for open or short between power steering pressure sensor and TCM >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-527 2006 Quest DTC P0550 PSP SENSOR 5. CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 12 and PSP sensor terminal 2. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 6. CHECK PSP SENSOR Refer to EC-528, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Replace PSP sensor. 7. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R5S POWER STEERING PRESSURE SENSOR 1. 2. 3. Reconnect all harness connectors disconnected. Start engine and let it idle. Check voltage between ECM terminal 12 and ground under the following conditions. Condition Voltage Steering wheel is being turned. 0.5 - 4.5V Steering wheel is not being turned. 0.4 - 0.8V MBIB0126E Revision: July 2006 EC-528 2006 Quest DTC P0603 ECM POWER SUPPLY DTC P0603 ECM POWER SUPPLY Component Description PFP:23710 A EBS00R5T Battery voltage is supplied to the ECM even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc. EC C D PBIB1164E E On Board Diagnosis Logic DTC No. P0603 0603 Trouble diagnosis name ECM power supply circuit EBS00R5U DTC detecting condition Possible cause ● Harness or connectors [ECM power supply (back-up) circuit is open or shorted.] ● ECM ECM back-up RAM system does not function properly. DTC Confirmation Procedure G EBS00R5V NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. 5. 6. F H I Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 1 second. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and wait at least 1 second. Repeat step 2 to 4 for 4 times. If 1st trip DTC is detected, go to EC-531, "Diagnostic Procedure" . J K L SEF058Y WITH GST M Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-529 2006 Quest DTC P0603 ECM POWER SUPPLY Wiring Diagram EBS00R5W BBWA1624E Revision: July 2006 EC-530 2006 Quest DTC P0603 ECM POWER SUPPLY Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 121 EC WIRE COLOR G ITEM Power supply for ECM (Back-up) CONDITION [Ignition switch: OFF] Diagnostic Procedure 1. 1. 2. 3. A DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) C EBS00R5X D CHECK ECM POWER SUPPLY Turn ignition switch OFF. Disconnect ECM harness connector. Check voltage between ECM terminal 121 and ground with CONSULT-II or tester. E F Voltage: Battery voltage OK or NG OK >> GO TO 3. NG >> GO TO 2. G H MBIB0026E 2. DETECT MALFUNCTIONING PART I Check the following. ● IPDM E/R harness connector E124 ● 15A fuse ● Harness for open or short between ECM and battery J K >> Repair or replace harness or connectors. 3. CHECK INTERMITTENT INCIDENT L Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 4. NG >> Repair or replace harness or connectors. M Revision: July 2006 EC-531 2006 Quest DTC P0603 ECM POWER SUPPLY 4. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT-II Turn ignition switch ON. Select “SELF DIAG RESULTS” mode with CONSULT-II. Touch “ERASE”. Perform DTC Confirmation Procedure. See EC-529 . 5. Is the 1st trip DTC P0603 displayed again? 1. 2. 3. 4. With GST Turn ignition switch ON. Select “Service $04” with GST. Touch “ERASE”. Perform DTC Confirmation Procedure. See EC-529 . 5. Is the 1st trip DTC P0603 displayed again? Yes or No Yes >> GO TO 5. No >> INSPECTION END 1. 2. 3. 4. 5. REPLACE ECM 1. 2. 3. 4. 5. 6. Replace ECM. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . Perform EC-81, "VIN Registration" . Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END Revision: July 2006 EC-532 2006 Quest DTC P0605 ECM DTC P0605 ECM Component Description PFP:23710 A EBS00R5Y The ECM consists of a microcomputer and connectors for signal input and output and for power supply. The ECM controls the engine. EC C D PBIB1164E E On Board Diagnosis Logic EBS00R5Z This self-diagnosis has one or two trip detection logic. DTC No. P0605 0605 Trouble diagnosis name Engine control module DTC detecting condition A) ECM calculation function is malfunctioning. B) ECM EEP-ROM system is malfunctioning. C) ECM self shut-off function is malfunctioning. F Possible cause ● ECM G FAIL-SAFE MODE H ECM enters fail-safe mode when the malfunction A is detected. Detected items Engine operation condition in fail-safe mode ● ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. ● ECM deactivates ASCD operation. Malfunction A J DTC Confirmation Procedure EBS00R60 Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION B, perform PROCEDURE FOR MALFUNCTION C. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. PROCEDURE FOR MALFUNCTION A With CONSULT-II 1. 2. 3. K L M Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. If 1st trip DTC is detected, go to EC-534, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. Revision: July 2006 I EC-533 2006 Quest DTC P0605 ECM PROCEDURE FOR MALFUNCTION B With CONSULT-II 1. 2. 3. 4. Turn ignition switch ON and wait at least 1 second. Select “DATA MONITOR” mode with CONSULT-II. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. If 1st trip DTC is detected, go to EC-534, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. PROCEDURE FOR MALFUNCTION C With CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and wait at least 1 second. Repeat step 2 to 3 for 32 times If 1st trip DTC is detected, go to EC-534, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. Diagnostic Procedure EBS00R61 1. INSPECTION START 1. 2. 3. 4. 5. With CONSULT-II Turn ignition switch ON. Select “SELF DIAG RESULTS” mode with CONSULT-II. Touch “ERASE”. Perform DTC Confirmation Procedure. See EC-533 . Is the 1st trip DTC P0605 displayed again? With GST 1. Turn ignition switch ON. 2. Select “Service $04” with GST. 3. Touch “ERASE”. 4. Perform DTC Confirmation Procedure. See EC-533 . 5. Is the 1st trip DTC P0605 displayed again? Yes or No Yes >> GO TO 2. No >> INSPECTION END Revision: July 2006 EC-534 2006 Quest DTC P0605 ECM 2. REPLACE ECM 1. 2. 3. 4. 5. 6. A Replace ECM. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to EC BL-210, "NVIS(NISSAN Vehicle Immobilizer System-NATS)" . Perform EC-81, "VIN Registration" . Perform EC-82, "Accelerator Pedal Released Position Learning" . C Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . D >> INSPECTION END E F G H I J K L M Revision: July 2006 EC-535 2006 Quest DTC P0643 SENSOR POWER SUPPLY DTC P0643 SENSOR POWER SUPPLY On Board Diagnosis Logic PFP:18919 EBS00R62 This self-diagnosis has the one trip detection logic. DTC No. P0643 0643 Trouble diagnosis name Sensor power supply circuit short DTC detecting condition Possible cause ● Harness or connectors (APP sensor 1 circuit is shorted.) (PSP sensor circuit is shorted.) (EVAP control system pressure sensor is shorted.) (Refrigerant pressure sensor circuit is shorted.) ● Accelerator pedal position sensor (APP sensor 1) ● Power steering pressure sensor ● EVAP control system pressure sensor ● Refrigerant pressure sensor ECM detects a voltage of power source for sensor is excessively low or high. FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. Engine operation condition in fail-safe mode ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. DTC Confirmation Procedure EBS00R63 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 1 second. If DTC is detected, go to EC-539, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-536 2006 Quest DTC P0643 SENSOR POWER SUPPLY Wiring Diagram EBS00R64 A EC C D E F G H I J K L M BBWA2008E Revision: July 2006 EC-537 2006 Quest DTC P0643 SENSOR POWER SUPPLY Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 48 G/O EVAP control system pressure sensor power supply [Ignition switch: ON] Approximately 5V 49 BR/Y Refrigerant pressure sensor power supply [Ignition switch: ON] Approximately 5V 68 BR/W PSP sensor power supply [Ignition switch: ON] Approximately 5V 82 B APP sensor 1 ground ● Warm-up condition ● Idle speed [Engine is running] Approximately 0V [Engine is running] 83 G APP sensor 2 ground ● Warm-up condition ● Idle speed Approximately 0V 90 R/V APP sensor 1 power supply [Ignition switch: ON] Approximately 5V 91 O APP sensor 2 power supply [Ignition switch: ON] Approximately 5V [Ignition switch: ON] 98 W/B Accelerator pedal position sensor 2 ● Engine stopped ● Accelerator pedal: Fully released 0.25 - 0.5V [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed 2.0 - 2.5V [Ignition switch: ON] 106 W Accelerator pedal position sensor 1 Revision: July 2006 ● Engine stopped ● Accelerator pedal: Fully released 0.5 - 1.0V [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed EC-538 4.2 - 4.8V 2006 Quest DTC P0643 SENSOR POWER SUPPLY Diagnostic Procedure EBS00R65 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-539 2006 Quest DTC P0643 SENSOR POWER SUPPLY 2. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT 1. 2. Disconnect accelerator pedal position (APP) sensor harness connector. Turn ignition switch ON. BBIA0335E 3. Check voltage between APP sensor terminal 7 and ground with CONSULT-II or tester. Voltage: Approximately 5V OK or NG OK >> GO TO 5. NG >> GO TO 3. PBIB1851E 3. CHECK SENSOR POWER SUPPLY CIRCUITS Check harness for short to power and short to ground, between the following terminals. ECM terminal 90 Sensor terminal Reference Wiring Diagram APP sensor terminal 7 EC-537 EVAP control system pressure sensor terminal 3 48 EC-481 TCM terminal 32 49 Refrigerant pressure sensor terminal 1 EC-712 68 PSP sensor terminal 3 EC-525 OK or NG OK >> GO TO 4. NG >> Repair short to ground or short to power in harness or connectors. 4. CHECK COMPONENTS Check the following. ● EVAP control system pressure sensor (Refer to EC-485, "Component Inspection" .) ● Refrigerant pressure sensor (Refer to ATC-117, "Refrigerant Pressure Sensor" or MTC-32, "TROUBLE DIAGNOSIS" ). ● Power steering pressure sensor (Refer to EC-528, "Component Inspection" .) OK or NG OK >> GO TO 7. NG >> Replace malfunctioning component. Revision: July 2006 EC-540 2006 Quest DTC P0643 SENSOR POWER SUPPLY 5. CHECK APP SENSOR A Refer to EC-631, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> GO TO 6. EC 6. REPLACE ACCELERATOR PEDAL POSITION SENSOR C 1. 2. 3. 4. D Replace accelerator pedal position sensor. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . E >> INSPECTION END 7. CHECK INTERMITTENT INCIDENT F Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . G >> INSPECTION END H I J K L M Revision: July 2006 EC-541 2006 Quest DTC P0850 PNP SWITCH DTC P0850 PNP SWITCH Component Description PFP:23006 EBS00R66 When the shift position is P or N, park/neutral position (PNP) switch is turned ON. ECM detects the position because the continuity of the line (the ON signal) exists. The park/neutral position (PNP) switch assembly also indicates a transmission range switch to detect shift lever position. CONSULT-II Reference Value in Data Monitor Mode EBS00R67 Specification data are reference values. MONITOR ITEM P/N POSI SW CONDITION ● Ignition switch: ON SPECIFICATION Shift lever: P or N ON Shift lever: Except above OFF On Board Diagnosis Logic DTC No. P0850 0850 Trouble diagnosis name Park/neutral position switch EBS00R68 DTC detecting condition The signal of the park/neutral position (PNP) switch is not changed in the process of engine starting and driving. DTC Confirmation Procedure Possible cause ● Harness or connectors [The park/neutral position (PNP) switch circuit is open or shorted.] ● Park/neutral position (PNP) switch EBS00R69 CAUTION: Always drive vehicle at a safe speed. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. Turn ignition switch ON. Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT-II. Then check the “P/N POSI SW” signal under the following conditions. Position (Selector lever) Known-good signal P or N position ON Except the above position OFF 3. 4. 5. If NG, go to EC-545, "Diagnostic Procedure" . If OK, go to following step. Select “DATA MONITOR” mode with CONSULT-II. Start engine and warm it up to normal operating temperature. Maintain the following conditions for at least 60 consecutive seconds. ENG SPEED 1,200 - 6,375 rpm (5-speed A/T models) 1,400 - 6,375 rpm (4-speed A/T models) COOLAN TEMP/S More than 70°C (158°F) B/FUEL SCHDL 2.0 - 31.8 msec VHCL SPEED SE More than 64 km/h (40 MPH) Shift lever Suitable position 6. If 1st trip DTC is detected, go to EC-545, "Diagnostic Procedure" . Revision: July 2006 EC-542 SEF212Y SEF213Y 2006 Quest DTC P0850 PNP SWITCH Overall Function Check EBS00R6A Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this check, a 1st trip DTC might not be confirmed. WITH GST 1. 2. Condition (Gear position) Except the above position 3. EC Turn ignition switch ON. Check voltage between ECM terminal 102 (PNP switch signal) and ground under the following conditions. P or N position A C Voltage V (Known good data) Approx. 0 D BATTERY VOLTAGE (11 - 14V) If NG, go to EC-545, "Diagnostic Procedure" . E MBIB0043E F G H I J K L M Revision: July 2006 EC-543 2006 Quest DTC P0850 PNP SWITCH Wiring Diagram EBS00R6B BBWA2024E Revision: July 2006 EC-544 2006 Quest DTC P0850 PNP SWITCH Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. EC WIRE COLOR ITEM CONDITION [Ignition switch: ON] ● 102 O/B A PNP switch Shift lever: P or N [Ignition switch: ON] ● Except the above gear position Diagnostic Procedure DATA (DC Voltage) C BATTERY VOLTAGE (11 - 14V) Approximately 0V D EBS00R6C 1. CONFIRM THE TRANSMISSION TYPE E Which type of transmission (4-speed A/T or 5-speed A/T) is on the vehicle? 4-speed A/T or 5-speed A/T 4-speed A/T>>Go to EC-545, "PROCEDURE A" . 5-speed A/T>>Go to EC-548, "PROCEDURE B" . F PROCEDURE A G 1. CHECK STARTING SYSTEM H Turn ignition switch OFF, then turn it to START. Does starter motor operate? Yes or No Yes >> GO TO 2. No >> Refer to SC-10, "STARTING SYSTEM" . I 2. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I 1. 2. 3. 4. J Turn ignition switch OFF. Disconnect combination meter harness connector M23. Turn ignition switch ON. Check voltage between combination meter terminals 35, 36 and ground with CONSULT-II or tester under the following conditions. K L Voltage Condition (Shift position) Terminal 35 Terminal 36 P position BATTERY VOLTAGE (11 - 14V) Approximately 0 V N position Approximately 0 V BATTERY VOLTAGE (11 - 14V) Except the above position Approximately 0 V Approximately 0 V M PBIB1850E OK or NG OK >> GO TO 9. NG >> GO TO 3. Revision: July 2006 EC-545 2006 Quest DTC P0850 PNP SWITCH 3. CHECK PNP SWITCH POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect PNP switch harness connector. BBIA0259E 3. 4. Turn ignition switch ON. Check voltage between PNP switch terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 5. NG >> GO TO 4. PBIB1881E 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E8, F17 ● Harness connectors E25, M90 ● 10A fuse ● Fuse block (J/B) connector M4 ● Harness for open or short between PNP switch and fuse >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I 1. Check harness continuity between PNP switch terminal 7 and combination meter terminal 35, PNP switch terminal 9 and combination meter terminal 36. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. Revision: July 2006 EC-546 2006 Quest DTC P0850 PNP SWITCH 6. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors E2, F32 ● Harness connectors E25, M90 ● Harness for open or short between PNP switch and combination meter EC C >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK PNP SWITCH D Refer to AT-107, "DTC P0705 PARK/NEUTRAL POSITION SWITCH" . OK or NG OK >> GO TO 8. NG >> Replace PNP switch. E 8. CHECK INTERMITTENT INCIDENT F Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . G >> INSPECTION END 9. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II 1. 2. 3. H Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 102 and combination meter terminal 12. Refer to Wiring Diagram. I Continuity should exist. J 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 11. NG >> GO TO 10. K 10. DETECT MALFUNCTIONING PART L Check the following. ● Harness connectors E134, M83 ● Harness for open or short between ECM and combination meter M >> Repair open circuit or short to ground or short to power in harness or connectors. 11. CHECK CONBINATION METER Refer to DI-5, "COMBINATION METERS" . OK or NG OK >> GO TO 12. NG >> Replace combination meter 12. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-547 2006 Quest DTC P0850 PNP SWITCH PROCEDURE B 1. CHECK STARTING SYSTEM Turn ignition switch OFF, then turn it to START. Does starter motor operate? Yes or No Yes >> GO TO 2. No >> Refer to SC-10, "STARTING SYSTEM" . 2. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I 1. 2. 3. 4. Turn ignition switch OFF. Disconnect combination meter harness connector M23. Turn ignition switch ON. Check voltage between combination meter terminal 36 and ground with CONSULT-II or tester under the following conditions. Voltage Condition (Shift position) P or N position Except the above position Terminal 36 BATTERY VOLTAGE (11 - 14V) Approximately 0 V OK or NG OK >> GO TO 9. NG >> GO TO 3. PBIB1873E 3. CHECK PNP SWITCH POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect PNP switch harness connector. 3. 4. Turn ignition switch ON. Check voltage between PNP switch terminal 1 and ground with CONSULT-II or tester. Refer to Wiring Diagram. BBIA0259E Voltage: Battery voltage OK or NG OK >> GO TO 5. NG >> GO TO 4. PBIB3071E Revision: July 2006 EC-548 2006 Quest DTC P0850 PNP SWITCH 4. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors E19, F33 ● Fuse block (J/B) connector E30 ● Harness for open or short between PNP switch and fuse EC C >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I 1. D Check harness continuity between PNP switch terminal 5 and combination meter terminal 36. Refer to Wiring Diagram. E Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. F 6. DETECT MALFUNCTIONING PART G Check the following. ● Harness connectors E2, F32 ● Harness connectors E25, M90 ● Harness for open or short between PNP switch and combination meter H I >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK PNP SWITCH J Refer to AT-455, "DTC P0705 PARK/NEUTRAL POSITION SWITCH" . OK or NG OK >> GO TO 8. NG >> Replace PNP switch. K L 8. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . M >> INSPECTION END 9. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 102 and combination meter terminal 12. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 11. NG >> GO TO 10. Revision: July 2006 EC-549 2006 Quest DTC P0850 PNP SWITCH 10. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E134, M83 ● Harness for open or short between ECM and combination meter >> Repair open circuit or short to ground or short to power in harness or connectors. 11. CHECK CONBINATION METER Refer to DI-5, "COMBINATION METERS" . OK or NG OK >> GO TO 12. NG >> Replace combination meter 12. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-550 2006 Quest DTC P1148, P1168 CLOSED LOOP CONTROL DTC P1148, P1168 CLOSED LOOP CONTROL On Board Diagnosis Logic PFP:22690 A EBS00R6D These self-diagnoses have the one trip detection logic. DTC No. P1148 1148 (Bank 1) P1168 1168 (Bank 2) Trouble diagnosis name Closed loop control function DTC detecting condition The closed loop control function for bank 1 does not operate even when vehicle is driving in the specified condition. The closed loop control function for bank 2 does not operate even when vehicle is driving in the specified condition. EC Possible cause ● Harness or connectors [The air fuel ratio (A/F) sensor 1 circuit is open or shorted.] ● Air fuel ratio (A/F) sensor 1 ● Air fuel ratio (A/F) sensor 1 heater DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1. Perform the trouble diagnosis for the corresponding DTC. C D E F G H I J K L M Revision: July 2006 EC-551 2006 Quest DTC P1211 TCS CONTROL UNIT DTC P1211 TCS CONTROL UNIT Description PFP:47850 EBS00R6E The malfunction information related to TCS is transferred through the CAN communication line from “ABS actuator and electric unit (control unit)” to ECM. Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit (control unit)” but also for ECM after TCS related repair. On Board Diagnosis Logic EBS00R6F Freeze frame data is not stored in the ECM for this self-diagnosis. The MIL will not light up for this self-diagnosis. DTC No. P1211 1211 Trouble diagnosis name TCS control unit DTC detecting condition ECM receives a malfunction information from “ABS actuator and electric unit (control unit)”. Possible cause ● ABS actuator and electric unit (control unit) ● TCS related parts DTC Confirmation Procedure EBS00R6G TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for at least 60 seconds. If 1st trip DTC is detected, go to EC-552, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Diagnostic Procedure EBS00R6H Go to BRC-56, "TROUBLE DIAGNOSIS" or BRC-10, "TROUBLE DIAGNOSIS" . Revision: July 2006 EC-552 2006 Quest DTC P1212 TCS COMMUNICATION LINE DTC P1212 TCS COMMUNICATION LINE Description PFP:47850 A EBS00R6I NOTE: ● If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC EC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC P1212 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . C This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”. Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit D (control unit)” but also for ECM after TCS related repair. On Board Diagnosis Logic EBS00R6J E The MIL will not light up for this self-diagnosis. Freeze frame data is not stored in the ECM for this self-diagnosis. DTC No. P1212 1212 Trouble diagnosis name TCS communication line DTC detecting condition ECM can not receive the information from “ABS actuator and electric unit (control unit)” continuously. Possible cause F ● Harness or connectors (The CAN communication line is open or shorted.) ● ABS actuator and electric unit (control unit). ● Dead (Weak) battery DTC Confirmation Procedure EBS00R6K G H TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle. I WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for at least 10 seconds. If 1st trip DTC is detected, go to EC-553, "Diagnostic Procedure" . J K L SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Diagnostic Procedure EBS00R6L Go to BRC-56, "TROUBLE DIAGNOSIS" or BRC-10, "TROUBLE DIAGNOSIS" . Revision: July 2006 EC-553 2006 Quest M DTC P1217 ENGINE OVER TEMPERATURE DTC P1217 ENGINE OVER TEMPERATURE Description PFP:00000 EBS00R6M SYSTEM DESCRIPTION NOTE: ● If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC P1217 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . Cooling Fan Control Sensor Input Signal to ECM Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed*1 Battery Battery voltage*1 Wheel sensor Vehicle speed*2 Engine coolant temperature sensor Engine coolant temperature Air conditioner switch Air conditioner ON signal*2 Refrigerant pressure sensor Refrigerant pressure ECM function Cooling fan control Actuator IPDM E/R (Cooling fan relay) *1: The ECM determines the start signal status by the signals of engine speed and battery voltage. *2: This signal is sent to ECM through CAN communication line. The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MIDDLE/LOW/OFF]. Cooling Fan Operation PBIB3072E Revision: July 2006 EC-554 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE Cooling Fan Relay Operation A The ECM controls cooling fan relays in the IPDM E/R through CAN communication line. Cooling fan relay Cooling fan speed 1 2 3 Stop (OFF) OFF OFF OFF Low (LOW) OFF ON OFF Middle (MID) ON OFF OFF High (HI) ON OFF ON EC C COMPONENT DESCRIPTION Cooling Fan Motor D The cooling fan operates at each speed when the current flows in the cooling fan motor as follows. Cooling fan speed Middle (MID) High (HI) E Cooling fan motor terminals (+) (−) 1 3 and 4 2 3 and 4 1 and 2 3 1 and 2 4 1 and 2 3 and 4 F G The cooling fan operates at low (LOW) speed when cooling fan motors-1 and -2 are circuited in series under middle speed condition. H I J K L M Revision: July 2006 EC-555 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE CONSULT-II Reference Value in Data Monitor Mode EBS00R6N Specification data are reference values. MONITOR ITEM AIR COND SIG CONDITION ● Engine: After warming up, idle the engine ● Engine: After warming up, idle the engine ● Air conditioner switch: OFF COOLING FAN SPECIFICATION Air conditioner switch: OFF OFF Air conditioner switch: ON (Compressor operates.) ON Engine coolant temperature is 94°C (201°F) or less OFF Engine coolant temperature is between 95°C (203°F) and 99°C (210°F) LOW Engine coolant temperature is between 100°C (212°F) and 104°C (219°F) MID Engine coolant temperature is 105°C (221°F) or more HI On Board Diagnosis Logic EBS00R6O If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will rise. When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is indicated. This self-diagnosis has the one trip detection logic. DTC No. Trouble diagnosis name DTC detecting condition ● ● P1217 1217 Engine over temperature (Overheat) ● ● Cooling fan does not operate properly (Overheat). Cooling fan system does not operate properly (Overheat). Engine coolant was not added to the system using the proper filling method. Engine coolant is not within the specified range. Possible cause ● Harness or connectors (The cooling fan circuit is open or shorted.) ● IPDM E/R (Cooling fan relay) ● Cooling fan ● Radiator hose ● Radiator ● Radiator cap ● Water pump ● Thermostat For more information, refer to EC-564, "Main 12 Causes of Overheating" . CAUTION: When a malfunction is indicated, be sure to replace the coolant. Refer to CO-9, "Changing Engine Coolant" . Also, replace the engine oil. Refer to MA-17, "Changing Engine Oil" . 1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to use coolant with the proper mixture ratio. Refer to MA-10, "ANTI-FREEZE COOLANT MIXTURE RATIO" . 2. After refilling coolant, run engine to ensure that no water-flow noise is emitted. Revision: July 2006 EC-556 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE Overall Function Check EBS00R6P A Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be confirmed. WARNING: Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres- EC sure fluid escaping from the radiator. Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up pressure to escape. Then turn the cap all the way off. C WITH CONSULT-II 1. 2. 3. Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level. If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to EC-560, "Diagnostic Procedure" . Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to EC-560, "Diagnostic Procedure" . Turn ignition switch ON. D E F SEF621W 4. 5. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-II. If the results are NG, go to EC-560, "Diagnostic Procedure" . G H I J SEF646X WITH GST 1. 2. 3. 4. K Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level. If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to EC-560, "Diagnostic Procedure" . Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to EC-560, "Diagnostic Procedure" . Perform “IPDM E/R auto active test” and check cooling fan motors operation, refer to PG-22, "Auto Active Test" . If NG, go to EC-560, "Diagnostic Procedure" . Revision: July 2006 EC-557 L M SEF621W 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE Wiring Diagram EBS00R6Q BBWA2023E Revision: July 2006 EC-558 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE A EC C D E F G H I J K L M BBWA1631E Revision: July 2006 EC-559 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE Diagnostic Procedure EBS00R6R 1. INSPECTION START Do you have CONSULT-II? Yes or No Yes >> GO TO 2. No >> GO TO 3. 2. CHECK COOLING FAN OPERATION With CONSULT-II Start engine and let it idle. Select “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-II. 3. Make sure that cooling fans-1 and -2 operate at each speed (LOW/MID/HI). OK or NG OK >> GO TO 4. NG >> Check cooling fan control circuit. (Go to EC-562, "PROCEDURE A" .) 1. 2. SEF784Z 3. CHECK COOLING FAN OPERATION Without CONSULT-II 1. Perform “IPDM E/R auto active test” and check cooling fan motors operation, refer to PG-22, "Auto Active Test" . 2. Make sure that cooling fans-1 and -2 operate at each speed (Low/Middle/High). OK or NG OK >> GO TO 4. NG >> Check cooling fan control circuit. (Go to EC-562, "PROCEDURE A" .) 4. CHECK COOLING SYSTEM FOR LEAK CO-8, "CHECKING COOLING SYSTEM FOR LEAKS" OK or NG OK >> GO TO 5. NG >> Check the following for leak. Refer to CO-8, "CHECKING COOLING SYSTEM FOR LEAKS" . ● Hose ● Radiator ● Water pump 5. CHECK RADIATOR CAP CO-8, "CHECKING RADIATOR CAP" OK or NG OK >> GO TO 6. NG >> Replace radiator cap. Revision: July 2006 EC-560 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE 6. CHECK COMPONENT PARTS A Check the following. Thermostat. Refer to CO-22, "THERMOSTAT AND THERMOSTAT HOUSING" . Engine coolant temperature sensor. Refer to EC-238, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Replace engine coolant temperature sensor. EC C 7. CHECK MAIN 12 CAUSES D If the cause cannot be isolated, go to EC-564, "Main 12 Causes of Overheating" . >> INSPECTION END E F G H I J K L M Revision: July 2006 EC-561 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE PROCEDURE A 1. CHECK IPDM E/R POWER SUPPLY CIRCUIT 1. 2. 3. Turn ignition switch OFF. Disconnect IPDM E/R harness connector E123. Check voltage between IPDM E/R terminal 15 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 3. NG >> GO TO 2. PBIB1681E 2. DETECT MALFUNCTIONING PART Check the following. ● 40A fusible link ● Harness for open or short between IPDM E/R and battery >> Repair open circuit or short to ground or short to power in harness or connectors. 3. CHECK IPDM E/R GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. Disconnect IPDM E/R harness connector E121 and E124. Check harness continuity between IPDM E/R terminal 16, 38, 60 and ground. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to power in harness or connectors. Revision: July 2006 EC-562 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE 4. CHECK COOLING FAN MOTOR-2 CIRCUIT FOR OPEN AND SHORT-I 1. A Disconnect cooling fan motor-2 harness connector. EC C D BBIA0328E 2. Check voltage between cooling fan motor-2 terminals 1, 2 and ground with CONSULT-II or tester. E Voltage: Battery voltage F OK or NG OK >> GO TO 6. NG >> GO TO 5. G PBIB1670E H 5. DETECT MALFUNCTIONING PART I Check the following. ● 40A fusible link ● Harness for open or short between cooling fan motor-2 and battery J >> Repair open circuit or short to ground or short to power in harness or connectors. 6. CHECK COOLING FAN MOTOR-2 CIRCUIT FOR OPEN AND SHORT-II 1. 2. K Disconnect IPDM E/R harness connector E118. Check harness continuity between the following terminals. Cooling fan motor-2 terminal 3 and IPDM E/R terminal 8 Cooling fan motor-2 terminal 4 and IPDM E/R terminals 11, 12 Refer to Wiring diagram. L M Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-563 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE 7. CHECK COOLING FAN MOTOR-1 CIRCUIT FOR OPEN AND SHORT-I 1. 2. Disconnect cooling fan motor-1 harness connector. Check harness continuity between cooling fan motor-1 terminals 3, 4 and ground. Refer to Wiring diagram. Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 8. NG >> Repair open circuit or short to power in harness or connectors. BBIA0328E 8. CHECK COOLING FAN MOTOR-1 CIRCUIT FOR OPEN AND SHORT-II 1. Check harness continuity between the following terminals. Cooling fan motor-1 terminal 1 and IPDM E/R terminal 10, 14 Cooling fan motor-1 terminal 2 and IPDM E/R terminal 13 Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK COOLING FAN MOTORS Refer to EC-565, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace cooling fan motors. 10. CHECK INTERMITTENT INCIDENT Perform EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> Replace IPDM E/R. Refer to PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)" . NG >> Repair or replace harness or connector. Main 12 Causes of Overheating Engine Step OFF 1 Inspection item ● Blocked radiator ● Blocked condenser ● Blocked radiator grille ● Blocked bumper 2 ● 3 4 EBS00R6S Equipment Standard Reference page ● Visual No blocking — Coolant mixture ● Coolant tester 50 - 50% coolant mixture MA-10 ● Coolant level ● Visual Coolant up to MAX level in reservoir tank and radiator filler neck CO-8 ● Radiator cap ● Pressure tester 59 - 98 kPa CO-14 (0.6 - 1.0 kg/cm2 , 9 - 14 psi) (Limit) ON*2 5 Revision: July 2006 ● Coolant leaks ● Visual No leaks EC-564 CO-8 2006 Quest DTC P1217 ENGINE OVER TEMPERATURE Engine Step ON*2 6 ● Thermostat ON*1 7 ● OFF 8 ON*3 9 OFF*4 OFF 10 Inspection item Equipment Standard ● Touch the upper and lower radiator hoses Both hoses should be hot CO-22 Cooling fan ● CONSULT-II Operating See trouble diagnosis for DTC P1217 (EC-554 ). ● Combustion gas leak ● Color checker chemical tester 4 Gas analyzer Negative — ● Coolant temperature gauge ● Visual Gauge less than 3/4 when driving — ● Coolant overflow to reservoir tank ● Visual No overflow during driving and idling CO-8 Coolant return from reservoir tank to radiator ● Should be initial level in reservoir tank CO-8 ● Visual Reference page A EC C D E 11 ● Cylinder head ● Straight gauge feeler gauge 0.1 mm (0.004 in) Maximum distortion (warping) EM-115 12 ● Cylinder block and pistons ● Visual No scuffing on cylinder walls or piston EM-138 F *1: Turn the ignition switch ON. *2: Engine running at 3,000 rpm for 10 minutes. *3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes. *4: After 60 minutes of cool down time. For more information, refer to CO-5, "OVERHEATING CAUSE ANALYSIS" . G H Component Inspection EBS00R6T COOLING FAN MOTORS-1 AND -2 1. 2. Disconnect cooling fan motor harness connectors. Supply cooling fan motor terminals with battery voltage and check operation. I J Cooling fan motor terminals Cooling fan speed Middle (MID) High (HI) (+) (−) 1 3 and 4 2 3 and 4 1 and 2 3 1 and 2 4 1 and 2 3 and 4 K SEF734W Cooling fan motor should operate. If NG, replace cooling fan motor. Revision: July 2006 L M EC-565 2006 Quest DTC P1225 TP SENSOR DTC P1225 TP SENSOR Component Description PFP:16119 EBS00R6U Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition. PBIB0145E On Board Diagnosis Logic EBS00R6V The MIL will not light up for this diagnosis. DTC No. P1225 1225 Trouble diagnosis name DTC detecting condition Closed throttle position learning performance Closed throttle position learning value is excessively low. DTC Confirmation Procedure Possible cause ● Electric throttle control actuator (TP sensor 1 and 2) EBS00R6W NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON. If 1st trip DTC is detected, go to EC-567, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-566 2006 Quest DTC P1225 TP SENSOR Diagnostic Procedure EBS00R6X 1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY A 1. 2. 3. Turn ignition switch OFF. Remove the intake air duct. Check if foreign matter is caught between the throttle valve and the housing. OK or NG OK >> GO TO 2. NG >> Remove the foreign matter and clean the electric throttle control actuator inside. EC C D E BBIA0318E 2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR F 1. 2. 3. G Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . H >> INSPECTION END Removal and Installation EBS00R6Y ELECTRIC THROTTLE CONTROL ACTUATOR I Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . J K L M Revision: July 2006 EC-567 2006 Quest DTC P1226 TP SENSOR DTC P1226 TP SENSOR Component Description PFP:16119 EBS00R6Z Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition. PBIB0145E On Board Diagnosis Logic EBS00R70 The MIL will not light up for this diagnosis. DTC No. P1226 1226 Trouble diagnosis name DTC detecting condition Closed throttle position learning performance Closed throttle position learning is not performed successfully, repeatedly. DTC Confirmation Procedure Possible cause ● Electric throttle control actuator (TP sensor 1 and 2) EBS00R71 NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. 5. 6. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON. Repeat step 3 to 4 for 32 times. If 1st trip DTC is detected, go to EC-569, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-568 2006 Quest DTC P1226 TP SENSOR Diagnostic Procedure EBS00R72 1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY A 1. 2. 3. Turn ignition switch OFF. Remove the intake air duct. Check if foreign matter is caught between the throttle valve and the housing. OK or NG OK >> GO TO 2. NG >> Remove the foreign matter and clean the electric throttle control actuator inside. EC C D E BBIA0318E 2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR F 1. 2. 3. G Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . H >> INSPECTION END Removal and Installation EBS00R73 ELECTRIC THROTTLE CONTROL ACTUATOR I Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . J K L M Revision: July 2006 EC-569 2006 Quest DTC P1402 EGR FUNCTION DTC P1402 EGR FUNCTION Description PFP:14710 EBS00R74 SYSTEM DESCRIPTION Sensor Camshaft position sensor (PHASE) Input Signal to ECM Crankshaft position sensor (POS) Engine speed*2 Piston position Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Park/neutral position (PNP) switch Gear position voltage*2 Battery Battery Air conditioner switch Air conditioner operation *1 Power steering pressure sensor Power steering operation Electrical load Electrical load signal *1 Wheel sensor Vehicle speed *1 TCM Gear position, shifting signal *1 ECM function EGR volume control Actuator EGR volume control valve *1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage. This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. The EGR volume control valve remains closed under the following conditions. ● Engine stopped ● Engine starting ● Engine idling ● Low engine coolant temperature ● Excessively high engine coolant temperature ● High engine speed ● Wide open throttle ● Low battery voltage PBIB1843E Revision: July 2006 EC-570 2006 Quest DTC P1402 EGR FUNCTION COMPONENT DESCRIPTION EGR Volume Control Valve A The EGR volume control valve uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the ECM. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECM does not issue the pulse signal. A certain voltage signal is issued so that the valve remains at that particular opening. EC C D SEF552W EGR Temperature Sensor E The EGR temperature sensor detects temperature changes in the EGR passageway. When the EGR volume control valve opens, hot exhaust gases flow, and the temperature in the passageway changes. The EGR temperature sensor is a thermistor that modifies a voltage signal sent from the ECM. This modified signal then returns to the ECM as an input signal. As the temperature increases, EGR temperature sensor resistance decreases. This sensor is not directly used to control the engine system. It is used only for the on board diagnosis. F G H SEF599K I EGR temperature °C (°F) Voltage* V Resistance MΩ 0 (32) 4.59 0.73 - 0.88 50 (122) 2.32 0.074 - 0.082 100 (212) 0.62 0.011 - 0.014 J K *: This data is reference value and is measured between ECM terminal 54 (EGR temperature sensor) and ground. L CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the ECM's transistor. Use a ground other than ECM terminals, such as the ground. When EGR system is operating. Voltage: 0 - 1.5V M SEF068X Revision: July 2006 EC-571 2006 Quest DTC P1402 EGR FUNCTION CONSULT-II Reference Value in Data Monitor Mode EBS00R75 Specification data are reference values. MONITOR ITEM EGR TEMP SEN EGR VOL CON/V CONDITION ● Engine: After warming up ● Engine: After warming up ● Air conditioner switch: OFF ● Shift lever: P or N ● No load SPECIFICATION Less than 4.5V Idle 0 step Revving engine up to 3,000 rpm quickly 10 - 55 step On Board Diagnosis Logic EBS00R76 If the EGR temperature sensor detects EGR flow under the condition that does not call for EGR, a high-flow malfunction is diagnosed. DTC No. P1402 1402 Trouble diagnosis name EGR function (Open) DTC detecting condition EGR flow is detected under the condition that does not call for EGR. DTC Confirmation Procedure Possible cause ● Harness or connectors (The EGR volume control valve circuit is open or shorted.) ● EGR volume control valve leaking or stuck open ● EGR temperature sensor EBS00R77 NOTE: ● Diagnosis for this DTC will occur when engine coolant temperature is below 50 to 60°C (122 to 140°F). Therefore, it will be better to turn ignition switch ON (start engine) at the engine coolant temperature below 30°C (86°F) when starting DTC confirmation procedure. ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: ● Always perform the test at a temperature above −10°C (14°F). ● Engine coolant temperature and EGR temperature must be verified in “DATA MONITOR” mode with CONSULT-II before starting DTC WORK SUPPORT test. If it is out of range below, the test cannot be conducted. COOLAN TEMP/S EGR TEMP SEN : −10 to 50°C (14 to 122°F)* : Less than 4.8V If the values are out of the ranges indicated above, park the vehicle in a cool place and allow the engine temperature to stabilize. Do not attempt to reduce the engine coolant temperature or EGR temperature with a fan or means other than SEF202Y ambient air. Doing so may produce an inaccurate diagnostic result. *: Although CONSULT-II screen displays “–10 to 40°C (14 to 104°F)” as a range of engine coolant temperature, ignore it. WITH CONSULT-II 1. 2. 3. Turn ignition switch OFF, and wait at least 10 seconds, and then turn ON. Select “EGR SYSTEM P1402” of “EGR SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II. Touch “START”. Revision: July 2006 EC-572 2006 Quest DTC P1402 EGR FUNCTION 4. Start engine and let it idle until “TESTING” on CONSULT-II screen is turned to “COMPLETED”. (It will take 80 seconds or more.) A EC C D PBIB1600E 5. If “TESTING” is not displayed after 5 minutes, turn ignition OFF and cool the engine coolant temperature to the range of −10 to 50°C (14 to 122°F). Retry from step 1. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC575, "Diagnostic Procedure" . F WITH GST 1. 2. 3. 4. 5. 6. 7. 8. E Turn ignition switch ON and select “Service $01” with GST. Check that engine coolant temperature is within the range of −10 to 50°C (14 to 122°F). Check that voltage between ECM terminal 54 (EGR temperature sensor signal) and ground is less than 4.8V. Start engine and let it idle for at least 80 seconds. Stop engine. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. Select “Service $07” with GST. If 1st trip DTC is detected, go to EC-575, "Diagnostic Procedure" . G H I J PBIB1671E K L M Revision: July 2006 EC-573 2006 Quest DTC P1402 EGR FUNCTION Wiring Diagram EBS00R78 BBWA1615E Revision: July 2006 EC-574 2006 Quest DTC P1402 EGR FUNCTION Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 17 18 19 20 EC WIRE COLOR P/B G L L/W ITEM EGR volume control valve CONDITION [Engine is running] ● Idle speed [Ignition switch: ON] 54 P/L A EGR temperature sensor DATA (DC Voltage) C 0.1 - 14V D Less than 4.5V [Engine is running] ● Warm-up condition ● EGR system is operating. 0 - 1.5V E Approximately 0V F 0 - 1.5V G [Engine is running] 67 B Sensor ground ● Warm-up condition ● Idle speed [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM More than a few seconds after turning ignition switch OFF [Ignition switch: ON] H BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) I : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) J Diagnostic Procedure EBS00R79 1. CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT 1. 2. 3. K Turn ignition switch OFF. Disconnect EGR volume control valve harness connector. Turn ignition switch ON. L M BBIA0339E 4. Check voltage between EGR volume control valve terminals 2, 5 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 3. NG >> GO TO 2. PBIB0627E Revision: July 2006 EC-575 2006 Quest DTC P1402 EGR FUNCTION 2. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● Harness for open or short between EGR volume control valve and IPDM E/R ● Harness for open or short between EGR volume control valve and ECM >> Repair harness or connectors. 3. CHECK EGR VOLUME CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminals and EGR volume control valve terminals as follows. Refer to Wiring Diagram. ECM terminal EGR volume control valve 17 6 18 3 19 4 20 1 Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK EGR VOLUME CONTROL VALVE Refer to EC-418, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Replace EGR volume control valve. 5. CHECK EGR TEMPERATURE SENSOR Refer to EC-427, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace EGR temperature sensor. 6. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-576 2006 Quest DTC P1564 ASCD STEERING SWITCH DTC P1564 ASCD STEERING SWITCH Component Description PFP:25551 A EBS00R7A ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation of switch, and determines which button is operated. EC C D E PBIB2602E Refer to EC-31, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function. F CONSULT-II Reference Value in Data Monitor Mode EBS00R7B Specification data are reference values. MONITOR ITEM MAIN SW CONDITION ● CANCEL SW ● RESUME/ACC SW SET SW ● ● Ignition switch: ON G SPECIFICATION MAIN switch: Pressed ON MAIN switch: Released OFF CANCEL switch: Pressed ON CANCEL switch: Released OFF RESUME/ACCELERATE switch: Pressed ON RESUME/ACCELERATE switch: Released OFF SET/COAST switch: Pressed ON SET/COAST switch: Released OFF H Ignition switch: ON Ignition switch: ON Ignition switch: ON I J K On Board Diagnosis Logic EBS00R7C This self-diagnosis has the one trip detection logic. The MIL will not light up for this diagnosis. NOTE: If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to EC-533, "DTC P0605 ECM". DTC No. P1564 1564 Trouble Diagnosis Name ASCD steering switch Revision: July 2006 DTC Detecting Condition ● An excessively high voltage signal from the ASCD steering switch is sent to ECM. ● ECM detects that input signal from the ASCD steering switch is out of the specified range. ● ECM detects that the ASCD steering switch is stuck ON. EC-577 Possible Cause ● Harness or connectors (The switch circuit is open or shorted.) ● ASCD steering switch ● ECM 2006 Quest L M DTC P1564 ASCD STEERING SWITCH DTC Confirmation Procedure EBS00R7D NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. 5. 6. 7. 8. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Wait at least 10 seconds. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 seconds. Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds. If DTC is detected, go to EC-581, "Diagnostic Procedure" . WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-578 2006 Quest DTC P1564 ASCD STEERING SWITCH Wiring Diagram EBS00R7E A EC C D E F G H I J K L M BBWA2011E Revision: July 2006 EC-579 2006 Quest DTC P1564 ASCD STEERING SWITCH Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 67 B Sensor ground ● Warm-up condition ● Idle speed [Ignition switch: ON] ● ASCD steering switch: OFF [Ignition switch: ON] ● 99 G/Y ASCD steering switch MAIN switch: Pressed [Ignition switch: ON] ● CANCEL switch: Pressed [Ignition switch: ON] ● RESUME/ACCELERATE switch: Pressed [Ignition switch: ON] ● Revision: July 2006 SET/COAST switch: Pressed EC-580 Approximately 0V Approximately 4V Approximately 0V Approximately 1V Approximately 3V Approximately 2V 2006 Quest DTC P1564 ASCD STEERING SWITCH Diagnostic Procedure EBS00R7F 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-581 2006 Quest DTC P1564 ASCD STEERING SWITCH 2. CHECK ASCD STEERING SWITCH CIRCUIT With CONSULT-II Turn ignition switch ON. Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET/COAST SW” in “DATA MONITOR” mode with CONSULT-II. 3. Check each item indication under the following conditions. 1. 2. Switch MAIN switch CANCEL switch RESUME/ACCELERATE switch Monitor item MAIN SW CANCEL SW RESUME/ACC SW Condition Indication Pressed ON Released OFF Pressed ON Released OFF Pressed ON Released OFF Pressed ON Released OFF SEC006D SET/COAST switch SET SW Without CONSULT-II 1. Turn ignition switch ON. 2. Check voltage between ECM terminal 99 and ground with pressing each button. Switch MAIN switch CANCEL switch RESUME/ACCELERATE switch SET/COAST switch Condition Voltage [V] Pressed Approx. 0 Released Approx. 4 Pressed Approx. 1 Released Approx. 4 Pressed Approx. 3 Released Approx. 4 Pressed Approx. 2 Released Approx. 4 PBIB0311E OK or NG OK >> GO TO 8. NG >> GO TO 3. 3. CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. 5. Turn ignition switch OFF. Disconnect combination switch harness connector M102. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between combination switch terminal 15 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 6. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. Revision: July 2006 EC-582 2006 Quest DTC P1564 ASCD STEERING SWITCH 4. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors E5, F14 ● Harness connectors E19, F33 ● Harness connectors E26, M91 ● Combination switch (spiral cable) ● Harness for open and short between ECM and combination switch ● Harness for open and short between TCM and combination switch EC C D >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. E Check harness continuity between ECM terminal 99 and combination switch terminal 14. Refer to Wiring Diagram. F Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. G H 6. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E26, M91 ● Combination switch (spiral cable) ● Harness for open and short between ECM and combination switch I J >> Repair open circuit or short to ground or short to power in harness or connectors. K 7. CHECK ASCD STEERING SWITCH Refer to EC-583, "Component Inspection" . OK or NG OK >> GO TO 8. NG >> Replace ASCD steering switch. L M 8. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R7G ASCD STEERING SWITCH 1. Disconnect combination switch (spiral cable). Revision: July 2006 EC-583 2006 Quest DTC P1564 ASCD STEERING SWITCH 2. Check continuity between combination switch (spiral cable) terminals 14 and 15 with pushing each switch. Switch MAIN switch CANCEL switch RESUME/ACCELERATE switch SET/COAST switch Revision: July 2006 Condition Resistance [Ω] Pressed Approx. 0 Released Approx. 4,000 Pressed Approx. 250 Released Approx. 4,000 Pressed Approx. 1,480 Released Approx. 4,000 Pressed Approx. 660 Released Approx. 4,000 EC-584 PBIB1621E 2006 Quest DTC P1572 ASCD BRAKE SWITCH DTC P1572 ASCD BRAKE SWITCH Component Description PFP:25320 A EBS00R7H When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. ECM detects the state of the brake pedal by this input of two kinds (ON/OFF signal). Refer to EC-31, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function. EC C D BBIA0329E E CONSULT-II Reference Value in Data Monitor Mode EBS00R7I Specification data are reference values. MONITOR ITEM BRAKE SW1 (ASCD brake switch) BRAKE SW2 (Stop lamp switch) CONDITION ● ● Ignition switch: ON Ignition switch: ON SPECIFICATION Brake pedal: Fully released ON Brake pedal: Slightly depressed OFF Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON On Board Diagnosis Logic G EBS00R7J This self-diagnosis has the one trip detection logic. The MIL will not light up for this diagnosis. NOTE: ● If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to EC-533, "DTC P0605 ECM". ● This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed. 1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory. DTC No. Trouble Diagnosis Name DTC Detecting Condition A) P1572 1572 When the vehicle speed is above 30 km/ h (19 MPH), ON signals from the stop lamp switch and the ASCD brake switch are sent to the ECM at the same time. ASCD brake switch B) Revision: July 2006 ASCD brake switch signal is not sent to ECM for extremely long time while the vehicle is driving EC-585 F H I J K Possible Cause ● Harness or connectors (The stop lamp switch circuit is shorted.) ● Harness or connectors (The ASCD brake switch circuit is shorted.) ● Stop lamp switch ● ASCD brake switch ● Incorrect stop lamp switch installation ● Incorrect ASCD brake switch installation ● ECM 2006 Quest L M DTC P1572 ASCD BRAKE SWITCH DTC Confirmation Procedure EBS00R7K CAUTION: Always drive vehicle at a safe speed. NOTE: ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. ● Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be detected. WITH CONSULT-II TESTING CONDITION: Steps 4 and 5 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle. 1. Start engine (TCS switch or VDC switch OFF). 2. Select “DATA MONITOR” mode with CONSULT-II. 3. Press MAIN switch and make sure that CRUISE indictor lights up. 4. Drive the vehicle for at least 5 consecutive seconds under the following condition. VHCL SPEED SE More than 30 km/h (19 MPH) Shift lever Suitable position 5. If 1st trip DTC is detected, go to EC-588, "Diagnostic Procedure" . If 1st trip DTC is not detected, go to the following step. Drive the vehicle for at least 5 consecutive seconds under the following condition. VHCL SPEED SE More than 30 km/h (19 MPH) Shift lever Suitable position Driving location Depress the brake pedal for more than 5 seconds so as not to come off from the above-mentioned vehicle speed. 6. PBIB2386E If 1st trip DTC is detected, go to EC-588, "Diagnostic Procedure" . WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-586 2006 Quest DTC P1572 ASCD BRAKE SWITCH Wiring Diagram EBS00R7L A EC C D E F G H I J K L M BBWA2259E Revision: July 2006 EC-587 2006 Quest DTC P1572 ASCD BRAKE SWITCH Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION [Ignition switch: OFF] ● 101 R/G Stop lamp switch Brake pedal: Fully released [Ignition switch: OFF] ● Brake pedal: Slightly depressed [Ignition switch: ON] ● 108 G/B ASCD brake switch Brake pedal: Fully released [Ignition switch: ON] ● Brake pedal: Slightly depressed Diagnostic Procedure DATA (DC Voltage) Approximately 0V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) Approximately 0V EBS00R7M 1. CHECK OVERALL FUNCTION-I With CONSULT-II 1. Turn ignition switch ON. 2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II. 3. Check “BRAKE SW1” indication under the following conditions. CONDITION INDICATION Brake pedal: Slightly depressed OFF Brake pedal: Fully released ON SEC011D 1. 2. Without CONSULT-II Turn ignition switch ON. Check voltage between ECM terminal 108 and ground under the following conditions. CONDITION Brake pedal: Slightly depressed Brake pedal: Fully released VOLTAGE Approximately 0V Battery voltage OK or NG OK >> GO TO 2. NG >> GO TO 3. MBIB0061E Revision: July 2006 EC-588 2006 Quest DTC P1572 ASCD BRAKE SWITCH 2. CHECK OVERALL FUNCTION-II A With CONSULT-II Check “BRAKE SW2” indication in “DATA MONITOR” mode. CONDITION EC INDICATION Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON C D SEC013D Without CONSULT-II Check voltage between ECM terminal 101 and ground under the following conditions. CONDITION Brake pedal: Fully released Brake pedal: Slightly depressed E F VOLTAGE Approximately 0V G Battery voltage OK or NG OK >> GO TO 11. NG >> GO TO 7. H I PBIB1677E 3. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT 1. 2. 3. J Turn ignition switch OFF. Disconnect ASCD brake switch harness connector. Turn ignition switch ON. K L M BBIA0329E 4. Check voltage between ASCD brake switch terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 5. NG >> GO TO 4. PBIB0857E Revision: July 2006 EC-589 2006 Quest DTC P1572 ASCD BRAKE SWITCH 4. DETECT MALFUNCTIONING PART Check the following. ● Fuse block (J/B) connector E30 ● 10A fuse ● Harness for open or short between ASCD brake switch and fuse >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 108 and ASCD brake switch terminal 2. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 6. CHECK ASCD BRAKE SWITCH Refer to EC-591, "Component Inspection" OK or NG OK >> GO TO 11. NG >> Replace ASCD brake switch. 7. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect stop lamp switch harness connector. BBIA0329E 3. Check voltage between stop lamp switch terminal 1 and ground with CONSULT -II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 9. NG >> GO TO 8. PBIB1184E Revision: July 2006 EC-590 2006 Quest DTC P1572 ASCD BRAKE SWITCH 8. DETECT MALFUNCTIONING PART A Check the following. ● Fuse block (J/B) connector E30 ● 10A fuse ● Harness for open or short between stop lamp switch and battery EC C >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. D Disconnect ECM harness connector. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2. Refer to Wiring Diagram. E Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 10. NG >> Repair open circuit or short to ground or short to power in harness or connectors. F G 10. CHECK STOP LAMP SWITCH H Refer to EC-591, "Component Inspection" OK or NG OK >> GO TO 11. NG >> Replace stop lamp switch. I 11. CHECK INTERMITTENT INCIDENT J Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END K Component Inspection EBS00R7N ASCD BRAKE SWITCH 1. 2. 3. L Turn ignition switch OFF. Disconnect ASCD brake switch harness connector. Check harness continuity between ASCD brake switch terminals 1 and 2 under the following conditions. Condition Brake pedal: Fully released Brake pedal: Slightly depressed M Continuity Should exist Should not exist If NG, adjust ASCD brake switch installation, refer to BR-6, "BRAKE PEDAL" , and perform step 3 again. SEC023D Revision: July 2006 EC-591 2006 Quest DTC P1572 ASCD BRAKE SWITCH STOP LAMP SWITCH 1. 2. 3. Turn ignition switch OFF. Disconnect stop lamp switch harness connector. Check harness continuity between stop lamp switch terminals 1 and 2 under the following conditions. Condition Brake pedal: Fully released Brake pedal: Slightly depressed Continuity Should not exist Should exist If NG, adjust stop lamp switch installation, refer to BR-6, "BRAKE PEDAL" , and perform step 3 again. PBIB1185E Revision: July 2006 EC-592 2006 Quest DTC P1574 ASCD VEHICLE SPEED SENSOR DTC P1574 ASCD VEHICLE SPEED SENSOR Component Description PFP:31036 A EBS00R7O The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from combination meter and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD EC control. Refer to EC-31, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for ASCD functions. On Board Diagnosis Logic EBS00R7P This self-diagnosis has the one trip detection logic. The MIL will not light up for this diagnosis. NOTE: ● If DTC P1574 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . ● If DTC P1574 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to EC-165, "DTC U1010 CAN COMMUNICATION" . ● If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer to EC-518, "DTC P0500 VSS" ● If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to EC-533, "DTC P0605 ECM" DTC No. P1574 1574 Trouble Diagnosis Name ASCD vehicle speed sensor DTC Detecting Condition ECM detects a difference between two vehicle speed signals is out of the specified range. DTC Confirmation Procedure Possible Cause C D E F G ● Harness or connectors (The CAN communication line is open or shorted.) ● ABS actuator and electric unit (control unit) ● Wheel sensor ● TCM ● ECM H I EBS00R7Q CAUTION: Always drive vehicle at a safe speed. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle. J K L WITH CONSULT-II 1. 2. 3. 4. Start engine (TCS switch or VDC switch OFF). Select “DATA MONITOR” mode with CONSULT-II. Drive the vehicle at more than 40 km/h (25 MPH). If DTC is detected, go to EC-594, "Diagnostic Procedure" . M SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-593 2006 Quest DTC P1574 ASCD VEHICLE SPEED SENSOR Diagnostic Procedure EBS00R7R 1. CHECK DTC WITH TCM Check DTC with TCM. Refer to AT-42, "OBD-II Diagnostic Trouble Code (DTC)" (4-speed A/T models) or AT405, "OBD-II Diagnostic Trouble Code (DTC)" (5-speed A/T models). OK or NG OK >> GO TO 2. NG >> Perform trouble shooting relevant to DTC indicated. 2. CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)” Refer to BRC-10, "TROUBLE DIAGNOSIS" or BRC-56, "TROUBLE DIAGNOSIS" . OK or NG OK >> INSPECTION END NG >> Repair or replace. Revision: July 2006 EC-594 2006 Quest DTC P1800 VIAS CONTROL SOLENOID VALVE DTC P1800 VIAS CONTROL SOLENOID VALVE Component Description PFP:14955 A EBS00R7S The VIAS control solenoid valve (2) cuts the intake manifold vacuum signal for power valve control. It responds to ON/OFF signals from the ECM. When the solenoid is off, the vacuum signal from the intake manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and feeds the vacuum signal to the power valve actuator (1). EC C : Vehicle front ● D BBIA0649E E CONSULT-II Reference Value in Data Monitor Mode EBS00R7T Specification data are reference values. MONITOR ITEM VIAS S/V CONDITION ● Engine: After warming up F SPECIFICATION 1,800 - 3,600 rpm ON Except above conditions OFF G On Board Diagnosis Logic EBS00R7U The MIL will not light up for this self-diagnosis. DTC No. Trouble diagnosis name DTC detecting condition ● P1800 1800 VIAS control solenoid valve circuit An excessively low or high voltage signal is sent to ECM through the valve ● DTC Confirmation Procedure H Possible cause Harness or connectors (The solenoid valve circuit is open or shorted.) I VIAS control solenoid valve EBS00R7V J NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is between 11V at idle. K L WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for at least 5 seconds. If 1st trip DTC is detected, go to EC-597, "Diagnostic Procedure" . M SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-595 2006 Quest DTC P1800 VIAS CONTROL SOLENOID VALVE Wiring Diagram EBS00R7W BBWA1636E Revision: July 2006 EC-596 2006 Quest DTC P1800 VIAS CONTROL SOLENOID VALVE Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. EC WIRE COLOR ITEM CONDITION [Engine is running] ● 29 Y/G VIAS control solenoid valve Idle speed Engine speed is between 1,800 and 3,600 rpm. [Engine is running] [Ignition switch: OFF] ● W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) C 0 - 1.0V D [Engine is running] ● 111 A More than a few seconds after turning ignition switch OFF [Ignition switch: ON] Diagnostic Procedure E 0 - 1.5V F BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) G EBS00R7X 1. CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT H 1. 2. 3. Turn ignition switch OFF. Disconnect VIAS control solenoid valve harness connector (2). Turn ignition switch ON. I – : Vehicle front 1: Power valve actuator J – K BBIA0649E 4. Check voltage between terminal 1 and ground with CONSULT-II or tester. M Voltage: Battery voltage OK or NG OK >> GO TO 3. NG >> GO TO 2. PBIB0173E Revision: July 2006 EC-597 L 2006 Quest DTC P1800 VIAS CONTROL SOLENOID VALVE 2. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● IPDM E/R connector E122 ● Harness for open or short between VIAS control solenoid valve and IPDM E/R ● Harness for open or short between VIAS control solenoid valve and ECM >> Repair harness or connectors. 3. CHECK VIAS CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 29 and VIAS control solenoid valve terminal 2. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK VIAS CONTROL SOLENOID VALVE Refer to EC-598, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Replace VIAS control solenoid valve. 5. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection EBS00R7Y VIAS CONTROL SOLENOID VALVE With CONSULT-II 1. 2. 3. 4. Reconnect all harness connectors disconnected. Turn ignition switch ON. Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode. Check air passage continuity and operation delay time under the following conditions. Condition VIAS SOL VALVE Air passage continuity between A and B Air passage continuity between A and C ON Yes No OFF No Yes Operation takes less than 1 second. PBIB2505E Revision: July 2006 EC-598 2006 Quest DTC P1800 VIAS CONTROL SOLENOID VALVE Without CONSULT-II A Check air passage continuity and operation delay time under the following conditions. Condition Air passage continuity between A and B Air passage continuity between A and C 12V direct current supply between terminals 1 and 2 Yes No No supply No Yes EC C Operation takes less than 1 second. PBIB2532E Removal and Installation D EBS00R7Z VIAS CONTROL SOLENOID VALVE E Refer to EM-23, "INTAKE MANIFOLD" . F G H I J K L M Revision: July 2006 EC-599 2006 Quest DTC P1805 BRAKE SWITCH DTC P1805 BRAKE SWITCH Description PFP:25320 EBS00R80 Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed. This signal is used mainly to decrease the engine speed when the vehicle is driving. CONSULT-II Reference Value in Data Monitor Mode EBS00R81 Specification data are reference values. MONITOR ITEM BRAKE SW CONDITION ● Ignition switch: ON SPECIFICATION Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON On Board Diagnosis Logic EBS00R82 The MIL will not light up for this diagnosis. DTC No. P1805 1805 Trouble diagnosis name Brake switch DTC detecting condition Possible cause ● Harness or connectors (Stop lamp switch circuit is open or shorted.) ● Stop lamp switch A brake switch signal is not sent to ECM for extremely long time while the vehicle is driving. FALI-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode. Engine operating condition in fail-safe mode ECM controls the electric throttle control actuator by regulating the throttle opening to a small range. Therefore, acceleration will be poor. Vehicle condition Driving condition When engine is idling Normal When accelerating Poor acceleration DTC Confirmation Procedure EBS00R83 WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch ON. Fully depress the brake pedal for at least 5 seconds. Erase the DTC with CONSULT-II. Select “DATA MONITOR” mode with CONSULT-II. If 1st trip DTC is detected, go to EC-602, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-600 2006 Quest DTC P1805 BRAKE SWITCH Wiring Diagram EBS00R84 A EC C D E F G H I J K L M BBWA1637E Revision: July 2006 EC-601 2006 Quest DTC P1805 BRAKE SWITCH Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION [Ignition switch: OFF] ● 101 R/G Stop lamp switch Brake pedal: Fully released [Ignition switch: OFF] ● Brake pedal: Slightly depressed Diagnostic Procedure DATA (DC Voltage) Approximately 0V BATTERY VOLTAGE (11 - 14V) EBS00R85 1. CHECK STOP LAMP SWITCH CIRCUIT 1. 2. Turn ignition switch OFF. Check the stop lamp when depressing and releasing the brake pedal. Brake pedal Stop lamp Fully released Not illuminated Slightly depressed Illuminated OK or NG OK >> GO TO 4. NG >> GO TO 2. 2. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT 1. Disconnect stop lamp switch harness connector. BBIA0329E 2. Check voltage between stop lamp switch terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB1184E Revision: July 2006 EC-602 2006 Quest DTC P1805 BRAKE SWITCH 3. DETECT MALFUNCTIONING PART A Check the following. ● 10A fuse ● Fuse block (J/B) connector E30 ● Harness for open and short between stop lamp switch and battery EC C >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. D Disconnect ECM harness connector. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2. Refer to Wiring Diagram. E Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. F G 5. CHECK STOP LAMP SWITCH H Refer to EC-604, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace stop lamp switch. I 6. CHECK INTERMITTENT INCIDENT J Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END K L M Revision: July 2006 EC-603 2006 Quest DTC P1805 BRAKE SWITCH Component Inspection EBS00R86 STOP LAMP SWITCH 1. Disconnect stop lamp switch harness connector. BBIA0329E 2. Check continuity between stop lamp switch terminals 1 and 2 under the following conditions. Conditions Brake pedal: Fully released Brake pedal: Slightly depressed 3. Continuity Should not exist. Should exist. If NG, adjust stop lamp switch installation, refer to BR-6, "BRAKE PEDAL" , and perform step 2 again. PBIB1185E Revision: July 2006 EC-604 2006 Quest DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY Component Description PFP:16119 A EBS00R87 Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends EC an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM. C CONSULT-II Reference Value in Data Monitor Mode EBS00R88 Specification data are reference values. MONITOR ITEM THRTL RELAY CONDITION ● D SPECIFICATION Ignition switch: ON ON On Board Diagnosis Logic EBS00R89 E These self-diagnoses have the one trip detection logic. DTC No. P2100 2100 P2103 2103 Trouble diagnosis name Throttle control motor relay circuit open Throttle control motor relay circuit short DTC detecting condition F Possible cause ● Harness or connectors (Throttle control motor relay circuit is open) ● Throttle control motor relay ● Harness or connectors (Throttle control motor relay circuit is shorted) ECM detects a voltage of power source for throttle control motor is excessively low. ECM detects the throttle control motor relay is stuck ON. ● G H Throttle control motor relay I FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. J Engine operating condition in fail-safe mode ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. K DTC Confirmation Procedure EBS00R8A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. L PROCEDURE FOR DTC P2100 With CONSULT-II M 1. 2. 3. 4. Turn ignition switch ON and wait at least 2 seconds. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 5 seconds. If DTC is detected, go to EC-608, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. Revision: July 2006 EC-605 2006 Quest DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY PROCEDURE FOR DTC P2103 TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 8V. With CONSULT-II 1. 2. 3. Turn ignition switch ON and wait at least 1 second. Select “DATA MONITOR” mode with CONSULT-II. If DTC is detected, go to EC-608, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. Revision: July 2006 EC-606 2006 Quest DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY Wiring Diagram EBS00R8B A EC C D E F G H I J K L M BBWA2021E Revision: July 2006 EC-607 2006 Quest DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 3 WIRE COLOR R ITEM Throttle control motor relay power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) 0 - 14V [Ignition switch: ON] 4 O/L Throttle control motor (Close) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released PBIB1104E 0 - 14V [Ignition switch: ON] 5 W/L Throttle control motor (Open) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed PBIB1105E 104 O Throttle control motor relay [Ignition switch: OFF] BATTERY VOLTAGE (11 - 14V) [Ignition switch: ON] 0 - 1.0V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Diagnostic Procedure EBS00R8C 1. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I 1. 2. Turn ignition switch OFF. Check voltage between ECM terminal 104 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 2. PBIB1171E Revision: July 2006 EC-608 2006 Quest DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY 2. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II 1. 2. 3. A Disconnect ECM harness connector. Disconnect IPDM E/R harness connector E121. Check continuity between ECM terminal 104 and IPDM E/R terminal 47. Refer to Wiring Diagram. EC Continuity should exist. C 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. D 3. CHECK FUSE E 1. Disconnect 15A fuse. 2. Check 15A fuse for blown. OK or NG OK >> GO TO 7. NG >> Replace 15A fuse. F G 4. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I Check voltage between ECM terminal 3 and ground under the following conditions with CONSULT-II or tester. Ignition switch Voltage OFF Approximately 0V ON Battery voltage (11 - 14V) OK or NG OK >> GO TO 7. NG >> GO TO 5. H I J MBIB0028E K 5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II 1. 2. 3. 4. L Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect IPDM E/R harness connector E124. Check continuity between ECM terminal 3 and IPDM E/R terminal 42. Refer to Wiring Diagram. M Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. 6. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness for open or short between ECM and IPDM E/R >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-609 2006 Quest DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY 7. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> Replace IPDM E/R. Refer to PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)" . NG >> Repair or replace harness or connectors. Revision: July 2006 EC-610 2006 Quest DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION Description PFP:16119 A EBS00R8D NOTE: If DTC P2101 is displayed with DTC P2100 or 2119, first perform the trouble diagnosis for DTC P2100 EC or P2119. Refer to EC-605, "DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY" or EC-623, "DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR" . Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. C The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition. D On Board Diagnosis Logic EBS00R8E This self-diagnosis has the one trip detection logic. DTC No. Trouble diagnosis name E DTC detecting condition Possible cause ● P2101 2101 Electric throttle control performance Electric throttle control function does not operate properly. ● Harness or connectors (Throttle control motor circuit is open or shorted) F Electric throttle control actuator G FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. H Engine operating condition in fail-safe mode ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. I DTC Confirmation Procedure EBS00R8F TESTING CONDITION: ● Before performing the following procedure, confirm that battery voltage is more than 11V at idle. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. J K WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON and wait at least 2 seconds. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 5 seconds. If DTC is detected, go to EC-614, "Diagnostic Procedure" . L M SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-611 2006 Quest DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION Wiring Diagram EBS00R8G BBWA2020E Revision: July 2006 EC-612 2006 Quest DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. 3 WIRE COLOR ITEM CONDITION DATA (DC Voltage) C R Throttle control motor relay power supply [Ignition switch: ON] BATTERY VOLTAGE (11 - 14V) 0 - 14V D [Ignition switch: ON] 4 O/L Throttle control motor (Close) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released E PBIB1104E F 0 - 14V [Ignition switch: ON] 5 W/L Throttle control motor (Open) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed G H PBIB1105E 104 O Throttle control motor relay [Ignition switch: OFF] BATTERY VOLTAGE (11 - 14V) [Ignition switch: ON] 0 - 1.0V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) I J K L M Revision: July 2006 EC-613 2006 Quest DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION Diagnostic Procedure EBS00R8H 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I 1. Check voltage between ECM terminal 3 and ground under the following conditions with CONSULT-II or tester. Ignition switch Voltage OFF Approximately 0V ON Battery voltage (11 - 14V) OK or NG OK >> GO TO 9. NG >> GO TO 3. Revision: July 2006 MBIB0028E EC-614 2006 Quest DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION 3. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I 1. 2. A Turn ignition switch OFF. Check voltage between ECM terminal 104 and ground with CONSULT-II or tester. EC Voltage: Battery voltage OK or NG OK >> GO TO 6. NG >> GO TO 4. C D PBIB1171E E 4. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II 1. 2. 3. Disconnect ECM harness connector. Disconnect IPDM E/R harness connector E121. Check continuity between ECM terminal 104 and IPDM E/R terminal 47. Refer to Wiring Diagram. F G Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. H I 5. CHECK FUSE 1. Disconnect 15A fuse. 2. Check 15A fuse for blown. OK or NG OK >> GO TO 6. NG >> Replace 15A fuse. J K 6. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II 1. 2. L Disconnect IPDM E/R harness connector E124. Check continuity between ECM terminal 3 and IPDM E/R terminal 42. Refer to Wiring Diagram. M Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> GO TO 7. 7. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness for open or short between ECM and IPDM E/R >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-615 2006 Quest DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION 8. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> Replace IPDM E/R. Refer to PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)" . NG >> Repair or replace harness or connectors. 9. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect electric throttle control actuator harness connector. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. Electric throttle control actuator terminal 3 6 ECM terminal Continuity 5 Should not exist 4 Should exist 5 Should exist 4 Should not exist BBIA0318E 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 10. NG >> Repair or replace. 10. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 1. 2. Remove the intake air duct. Check if foreign matter is caught between the throttle valve and the housing. OK or NG OK >> GO TO 11. NG >> Remove the foreign matter and clean the electric throttle control actuator inside. BBIA0318E 11. CHECK THROTTLE CONTROL MOTOR Refer to EC-617, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> GO TO 13. 12. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 13. NG >> Repair or replace harness or connectors. Revision: July 2006 EC-616 2006 Quest DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION 13. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. A Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . EC >> INSPECTION END C Component Inspection EBS00R8I THROTTLE CONTROL MOTOR 1. 2. Disconnect electric throttle control actuator harness connector. Check resistance between terminals 3 and 6. D Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)] 3. 4. 5. E If NG, replace electric throttle control actuator and go to next step. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . F G PBIB0095E Removal and Installation EBS00R8J ELECTRIC THROTTLE CONTROL ACTUATOR H Refer to EM-23, "INTAKE MANIFOLD" . I J K L M Revision: July 2006 EC-617 2006 Quest DTC P2118 THROTTLE CONTROL MOTOR DTC P2118 THROTTLE CONTROL MOTOR Component Description PFP:16119 EBS00R8K The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition. On Board Diagnosis Logic EBS00R8L This self-diagnosis has the one trip detection logic. DTC No. P2118 2118 Trouble diagnosis name Throttle control motor circuit short DTC detecting condition ECM detects short in both circuits between ECM and throttle control motor. Possible cause ● Harness or connectors (Throttle control motor circuit is shorted.) ● Electric throttle control actuator (Throttle control motor) FAIL-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up. Engine operating condition in fail-safe mode ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. DTC Confirmation Procedure EBS00R8M NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON and wait at least 2 seconds. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 5 seconds. If DTC is detected, go to EC-621, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-618 2006 Quest DTC P2118 THROTTLE CONTROL MOTOR Wiring Diagram EBS00R8N A EC C D E F G H I J K L M BBWA2022E Revision: July 2006 EC-619 2006 Quest DTC P2118 THROTTLE CONTROL MOTOR Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 3 WIRE COLOR R ITEM Throttle control motor relay power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) 0 - 14V [Ignition switch: ON] 4 O/L Throttle control motor (Close) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released PBIB1104E 0 - 14V [Ignition switch: ON] 5 W/L Throttle control motor (Open) ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed PBIB1105E 104 O Throttle control motor relay [Ignition switch: OFF] BATTERY VOLTAGE (11 - 14V) [Ignition switch: ON] 0 - 1.0V : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-620 2006 Quest DTC P2118 THROTTLE CONTROL MOTOR Diagnostic Procedure EBS00R8O 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K 2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT L 1. 2. 3. M Disconnect electric throttle control actuator harness connector. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. Electric throttle control actuator terminal 3 6 ECM terminal Continuity 5 Should not exist 4 Should exist 5 Should exist 4 Should not exist BBIA0318E 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair or replace. Revision: July 2006 EC-621 2006 Quest DTC P2118 THROTTLE CONTROL MOTOR 3. CHECK THROTTLE CONTROL MOTOR Refer to EC-622, "Component Inspection" . OK or NG OK >> GO TO 4. NG >> GO TO 5. 4. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 5. NG >> Repair or replace harness or connectors. 5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END Component Inspection EBS00R8P THROTTLE CONTROL MOTOR 1. 2. Disconnect electric throttle control actuator harness connector. Check resistance between terminals 3 and 6. Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)] 3. 4. 5. If NG, replace electric throttle control actuator and go to next step. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . PBIB0095E Removal and Installation EBS00R8Q ELECTRIC THROTTLE CONTROL ACTUATOR Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . Revision: July 2006 EC-622 2006 Quest DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR Component Description PFP:16119 A EBS00R8R Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle control motor is operated by the ECM and it opens and closes the throttle valve. EC The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throttle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening C angle properly in response to driving condition. On Board Diagnosis Logic EBS00R8S D This self-diagnosis has the one trip detection logic. DTC No. P2119 2119 Trouble diagnosis name Electric throttle control actuator DTC detecting condition A) Electric throttle control actuator does not function properly due to the return spring malfunction. B) Throttle valve opening angle in fail-safe mode is not in specified range. C) ECM detect the throttle valve is stuck open. Possible cause E ● Electric throttle control actuator F G FAIL-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up. Detected items H Engine operating condition in fail-safe mode Malfunction A The ECM controls the electric throttle actuator by regulating the throttle opening around the idle position. The engine speed will not rise more than 2,000 rpm. Malfunction B ECM controls the electric throttle control actuator by regulating the throttle opening to 20 degrees or less. Malfunction C While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the engine stalls. The engine can restart in N or P position, and engine speed will not exceed 1,000 rpm or more. I J DTC Confirmation Procedure EBS00R8T NOTE: ● Perform PROCEDURE FOR MALFUNCTION A AND B first. If the 1st trip DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION C. ● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. K L PROCEDURE FOR MALFUNCTION A AND B With CONSULT-II Turn ignition witch ON and wait at least 1 second. Select “DATA MONITOR” mode with CONSULT-II. Set shift lever to D position and wait at least 3 seconds. Set shift lever to N or P position. Turn ignition witch OFF and wait at least 10 second. Turn ignition witch ON and wait at least 1 second. Set shift lever to D position and wait at least 3 seconds. Set shift lever to N or P position. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON. 10. If DTC is detected, go to EC-624, "Diagnostic Procedure" . M 1. 2. 3. 4. 5. 6. 7. 8. 9. SEF058Y With GST Follow the procedure “With CONSULT-II” above. Revision: July 2006 EC-623 2006 Quest DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR PROCEDURE FOR MALFUNCTION C With CONSULT-II 1. 2. 3. 4. 5. 6. Turn ignition switch ON and wait at least 1 second. Select “DATA MONITOR” mode with CONSULT-II. Set shift lever to D position and wait at least 3 seconds. Set shift lever to P or N position. Start engine and let it idle for 3 seconds. If DTC is detected, go to EC-624, "Diagnostic Procedure" . SEF058Y With GST Follow the procedure “With CONSULT-II” above. Diagnostic Procedure EBS00R8U 1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 1. 2. Remove the intake air duct. Check if a foreign matter is caught between the throttle valve and the housing. OK or NG OK >> GO TO 2. NG >> Remove the foreign matter and clean the electric throttle control actuator inside. BBIA0318E 2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END Revision: July 2006 EC-624 2006 Quest DTC P2122, P2123 APP SENSOR DTC P2122, P2123 APP SENSOR Component Description PFP:18002 A EBS00R8V The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the acceleraEC tor position and sends a signal to the ECM. Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal C position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from D these signals and controls the throttle control motor based on these signals. PBIB1741E Idle position of the accelerator pedal is determined by the ECM E receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut. CONSULT-II Reference Value in Data Monitor Mode EBS00R8W F Specification data are reference values. MONITOR ITEM ACCEL SEN 1 ACCEL SEN 2* CONDITION ● CLSD THL POS ● SPECIFICATION Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released 0.5 - 1.0V Accelerator pedal: Fully depressed 4.2 - 4.8V Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released ON Accelerator pedal: Slightly depressed OFF G H *: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differ from ECM terminal voltage. I On Board Diagnosis Logic EBS00R8X These self-diagnoses have the one trip detection logic. NOTE: If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-536, "DTC P0643 SENSOR POWER SUPPLY" . DTC No. Trouble diagnosis name DTC detecting condition P2122 2122 Accelerator pedal position sensor 1 circuit low input An excessively low voltage from the APP sensor 1 is sent to ECM. P2123 2123 Accelerator pedal position sensor 1 circuit high input An excessively high voltage from the APP sensor 1 is sent to ECM. J K Possible cause ● Harness or connectors (The APP sensor 1 circuit is open or shorted.) ● Accelerator pedal position sensor (APPsensor 1) L M FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. Engine operating condition in fail-safe mode The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. Revision: July 2006 EC-625 2006 Quest DTC P2122, P2123 APP SENSOR DTC Confirmation Procedure EBS00R8Y NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 1 second. If DTC is detected, go to EC-629, "Diagnostic Procedure" . SEF058Y WITH GST Follow the procedure “WITH CONSULT-II” above. Revision: July 2006 EC-626 2006 Quest DTC P2122, P2123 APP SENSOR Wiring Diagram EBS00R8Z A EC C D E F G H I J K L M BBWA2026E Revision: July 2006 EC-627 2006 Quest DTC P2122, P2123 APP SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Engine is running] 82 B APP sensor 1 ground ● Warm-up condition ● Idle speed Approximately 0V [Engine is running] 83 G APP sensor 2 ground ● Warm-up condition ● Idle speed Approximately 0V 90 R/V APP sensor 1 power supply [Ignition switch: ON] Approximately 5V 91 O APP sensor 2 power supply [Ignition switch: ON] Approximately 5V [Ignition switch: ON] 98 W/B Accelerator pedal position sensor 2 ● Engine stopped ● Accelerator pedal: Fully released 0.25 - 0.5V [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed 2.0 - 2.5V [Ignition switch: ON] 106 W Accelerator pedal position sensor 1 Revision: July 2006 ● Engine stopped ● Accelerator pedal: Fully released 0.5 - 1.0V [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed EC-628 4.2 - 4.8V 2006 Quest DTC P2122, P2123 APP SENSOR Diagnostic Procedure EBS00R90 1. CHECK GROUND CONNECTIONS 1. 2. A Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . EC C D E F G H I J BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. K L M Revision: July 2006 EC-629 2006 Quest DTC P2122, P2123 APP SENSOR 2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT 1. 2. Disconnect accelerator pedal position (APP) sensor harness connector. Turn ignition switch ON. BBIA0335E 3. Check voltage between APP sensor terminal 7 and ground with CONSULT-II or tester. Voltage: Approximately 5V OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. PBIB1851E 3. CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 82 and APP sensor terminal 1. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 106 and APP sensor terminal 2. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK APP SENSOR Refer to EC-631, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> GO TO 6. Revision: July 2006 EC-630 2006 Quest DTC P2122, P2123 APP SENSOR 6. REPLACE ACCELERATOR PEDAL ASSEMBLY 1. 2. 3. 4. A Replace accelerator pedal assembly. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . EC C >> INSPECTION END 7. CHECK INTERMITTENT INCIDENT D Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . E >> INSPECTION END Component Inspection EBS00R91 ACCELERATOR PEDAL POSITION SENSOR 1. 2. 3. Terminal Accelerator pedal Voltage 106 (Accelerator pedal position sensor 1) Fully released 0.5 - 1.0V Fully depressed 4.2 - 4.8V Fully released 0.25 - 0.5V Fully depressed 0.2 - 2.5V 98 (Accelerator pedal position sensor 2) 4. 5. 6. 7. F Reconnect all harness connectors disconnected. Turn ignition switch ON. Check voltage between ECM terminals 106 (APP sensor 1 signal), 98 (APP sensor 2 signal) and ground under the following conditions. G H I MBIB0023E If NG, replace accelerator pedal assembly and go to next step. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . Removal and Installation J K EBS00R92 ACCELERATOR PEDAL L Refer to ACC-3, "ACCELERATOR CONTROL SYSTEM" . M Revision: July 2006 EC-631 2006 Quest DTC P2127, P2128 APP SENSOR DTC P2127, P2128 APP SENSOR Component Description PFP:18002 EBS00R93 The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. PBIB1741E Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut. CONSULT-II Reference Value in Data Monitor Mode EBS00R94 Specification data are reference values. MONITOR ITEM ACCEL SEN 1 ACCEL SEN 2* CONDITION ● CLSD THL POS ● SPECIFICATION Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released 0.5 - 1.0V Accelerator pedal: Fully depressed 4.2 - 4.8V Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released ON Accelerator pedal: Slightly depressed OFF *: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differ from ECM terminal voltage. On Board Diagnosis Logic EBS00R95 These self-diagnoses have the one trip detection logic. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P2127 2127 Accelerator pedal position sensor 2 circuit low input An excessively low voltage from the APP sensor 2 is sent to ECM. ● Harness or connectors (APP sensor 2 circuit is open or shorted.) (TP sensor circuit is shorted.) P2128 2128 Accelerator pedal position sensor 2 circuit high input An excessively high voltage from the APP sensor 2 is sent to ECM. ● Accelerator pedal position sensor (APP sensor 2) ● Electric throttle control actuator (TP sensor 1 and 2) FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. Engine operating condition in fail-safe mode The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. Revision: July 2006 EC-632 2006 Quest DTC P2127, P2128 APP SENSOR DTC Confirmation Procedure EBS00R96 A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. C Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 1 second. If DTC is detected, go to EC-636, "Diagnostic Procedure" . D E F SEF058Y WITH GST G Follow the procedure “WITH CONSULT-II” above. H I J K L M Revision: July 2006 EC-633 2006 Quest DTC P2127, P2128 APP SENSOR Wiring Diagram EBS00R97 BBWA1639E Revision: July 2006 EC-634 2006 Quest DTC P2127, P2128 APP SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 47 EC WIRE COLOR R A ITEM Throttle position sensor power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) Approximately 5V C Approximately 0V D Approximately 0V E [Engine is running] 82 B APP sensor 1 ground ● Warm-up condition ● Idle speed [Engine is running] 83 G APP sensor 2 ground ● Warm-up condition ● Idle speed 90 R/V APP sensor 1 power supply [Ignition switch: ON] Approximately 5V 91 O APP sensor 2 power supply [Ignition switch: ON] Approximately 5V F [Ignition switch: ON] 98 W/B Accelerator pedal position sensor 2 ● Engine stopped ● Accelerator pedal: Fully released 0.25 - 0.5V G [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed 0.2 - 2.5V H 0.5 - 1.0V I 4.2 - 4.8V J [Ignition switch: ON] 106 W Accelerator pedal position sensor 1 ● Engine stopped ● Accelerator pedal: Fully released [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed K L M Revision: July 2006 EC-635 2006 Quest DTC P2127, P2128 APP SENSOR Diagnostic Procedure EBS00R98 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-636 2006 Quest DTC P2127, P2128 APP SENSOR 2. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT 1. 2. A Disconnect accelerator pedal position (APP) sensor harness connector. Turn ignition switch ON. EC C D BBIA0335E 3. Check voltage between APP sensor terminal 6 and ground with CONSULT-II or tester. E Voltage: Approximately 5V F OK or NG OK >> GO TO 7. NG >> GO TO 3. G PBIB1852E H 3. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II 1. 2. 3. I Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between APP sensor terminal 6 and ECM terminal 91. Refer to wiring diagram. J Continuity should exist. K OK or NG OK >> GO TO 4. NG >> Repair open circuit. L 4. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III Check harness for short to power and short to ground, between the following terminals. ECM terminal Sensor terminal M Reference Wiring Diagram 91 APP sensor terminal 6 EC-634 47 Electric throttle control actuator terminal 1 EC-642 OK or NG OK >> GO TO 5. NG >> Repair short to ground or short to power in harness or connectors. 5. CHECK THROTTLE POSITION SENSOR Refer to EC-647, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 6. Revision: July 2006 EC-637 2006 Quest DTC P2127, P2128 APP SENSOR 6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. Replace electric throttle control actuator. PerformEC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 7. CHECK APP SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 83 and APP sensor terminal 3. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 8. CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 98 and APP sensor terminal 5. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK APP SENSOR Refer to EC-639, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 10. 10. REPLACE ACCELERATOR PEDAL ASSEMBLY 1. 2. 3. 4. Replace accelerator pedal assembly. PerformEC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 11. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-638 2006 Quest DTC P2127, P2128 APP SENSOR Component Inspection EBS00R99 A ACCELERATOR PEDAL POSITION SENSOR 1. 2. 3. Reconnect all harness connectors disconnected. Turn ignition switch ON. Check voltage between ECM terminals 106 (APP sensor 1 signal), 98 (APP sensor 2 signal) and ground under the following conditions. Terminal Accelerator pedal Voltage 106 (Accelerator pedal position sensor 1) Fully released 0.5 - 1.0V Fully depressed 4.2 - 4.8V Fully released 0.25 - 0.5V Fully depressed 0.2 - 2.5V 98 (Accelerator pedal position sensor 2) 4. 5. 6. 7. EC C D E MBIB0023E If NG, replace accelerator pedal assembly and go to next step. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . Removal and Installation F EBS00R9A G ACCELERATOR PEDAL Refer to ACC-3, "ACCELERATOR CONTROL SYSTEM" . H I J K L M Revision: July 2006 EC-639 2006 Quest DTC P2135 TP SENSOR DTC P2135 TP SENSOR Component Description PFP:16119 EBS00R9B Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition. PBIB0145E CONSULT-II Reference Value in Data Monitor Mode EBS00R9C Specification data are reference values. MONITOR ITEM THRTL SEN 1 THRTL SEN 2* CONDITION SPECIFICATION ● Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released More than 0.36V ● Shift lever: D Accelerator pedal: Fully depressed Less than 4.75V *: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal. On Board Diagnosis Logic EBS00R9D This self-diagnosis has the one trip detection logic. DTC No. P2135 2135 Trouble diagnosis name Throttle position sensor circuit range/performance DTC detecting condition Rationally incorrect voltage is sent to ECM compared with the signals from TP sensor 1 and TP sensor 2. Possible cause ● Harness or connector (TP sensor 1 and 2 circuit is open or shorted.) (APP sensor 2 circuit is shorted.) ● Electric throttle control actuator (TP sensor 1 and 2) ● Accelerator pedal position sensor (APP sensor 2) FAIL-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up. Engine operation condition in fail-safe mode The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. Revision: July 2006 EC-640 2006 Quest DTC P2135 TP SENSOR DTC Confirmation Procedure EBS00R9E A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. C Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 1 second. If DTC is detected, go to EC-644, "Diagnostic Procedure" . D E F SEF058Y WITH GST G Follow the procedure “WITH CONSULT-II” above. H I J K L M Revision: July 2006 EC-641 2006 Quest DTC P2135 TP SENSOR Wiring Diagram EBS00R9F BBWA1640E Revision: July 2006 EC-642 2006 Quest DTC P2135 TP SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 47 EC WIRE COLOR R A ITEM Throttle position sensor power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) C Approximately 5V [Ignition switch: ON] 50 Y ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released Throttle position sensor 1 D More than 0.36V E [Ignition switch: ON] ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed Less than 4.75V F [Engine is running] 66 G Throttle position sensor ground ● Warm-up condition ● Idle speed Approximately 0V G [Ignition switch: ON] 69 L ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully released Throttle position sensor 2 H Less than 4.75V [Ignition switch: ON] 91 O APP sensor 2 power supply ● Engine stopped ● Shift lever: D ● Accelerator pedal: Fully depressed [Ignition switch: ON] I More than 0.36V J Approximately 5V K L M Revision: July 2006 EC-643 2006 Quest DTC P2135 TP SENSOR Diagnostic Procedure EBS00R9G 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-644 2006 Quest DTC P2135 TP SENSOR 2. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT 1. 2. A Disconnect electric throttle control actuator harness connector. Turn ignition switch ON. EC C D BBIA0318E 3. Check voltage between electric throttle control actuator terminal 1 and ground with CONSULT-II or tester. E Voltage: Approximately 5V F OK or NG OK >> GO TO 7. NG >> GO TO 3. G PBIB0082E H 3. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-II 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between electric throttle control actuator terminal 1 and ECM terminal 47. Refer to Wiring Diagram. I J Continuity should exist. K OK or NG OK >> GO TO 4. NG >> Repair open circuit. L 4. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-III Check harness for short to power and short to ground, between the following terminals. ECM terminal Sensor terminal M Reference Wiring Diagram 47 Electric throttle control actuator terminal 1 EC-642 91 APP sensor terminal 6 EC-650 OK or NG OK >> GO TO 5. NG >> Repair short to ground or short to power in harness or connectors. 5. CHECK APP SENSOR Refer to EC-655, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 6. Revision: July 2006 EC-645 2006 Quest DTC P2135 TP SENSOR 6. REPLACE ACCELERATOR PEDAL ASSEMBLY 1. 2. 3. 4. Replace accelerator pedal assembly. PerformEC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 7. CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 66 and electric throttle control actuator terminal 5. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 8. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 8. CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 4, ECM terminal 69 and electric throttle control actuator terminal 2. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK THROTTLE POSITION SENSOR Refer to EC-647, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> GO TO 10. 10. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. Replace the electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 11. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-646 2006 Quest DTC P2135 TP SENSOR Component Inspection EBS00R9H A THROTTLE POSITION SENSOR 1. 2. 3. 4. 5. Reconnect all harness connectors disconnected. Perform EC-82, "Throttle Valve Closed Position Learning" . Turn ignition switch ON. Set shift lever to D position. Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions. Terminal Accelerator pedal Voltage 50 (Throttle position sensor 1) Fully released More than 0.36V Fully depressed Less than 4.75V Fully released Less than 4.75V Fully depressed More than 0.36V 69 (Throttle position sensor 2) 6. 7. 8. If NG, replace electric throttle control actuator and go to the next step. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . Removal and Installation EC C D E PBIB1608E F G EBS00R9I ELECTRIC THROTTLE CONTROL ACTUATOR H Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" . I J K L M Revision: July 2006 EC-647 2006 Quest DTC P2138 APP SENSOR DTC P2138 APP SENSOR Component Description PFP:18002 EBS00R9J The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. PBIB1741E Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut. CONSULT-II Reference Value in Data Monitor Mode EBS00R9K Specification data are reference values. MONITOR ITEM ACCEL SEN 1 ACCEL SEN 2* CLSD THL POS CONDITION ● ● SPECIFICATION Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released 0.5 - 1.0V Accelerator pedal: Fully depressed 4.2 - 4.8V Ignition switch: ON (Engine stopped) Accelerator pedal: Fully released ON Accelerator pedal: Slightly depressed OFF *: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differ from ECM terminal voltage. On Board Diagnosis Logic EBS00R9L This self-diagnosis has the one trip detection logic. NOTE: If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-536, "DTC P0643 SENSOR POWER SUPPLY" . DTC No. P2138 2138 Trouble diagnosis name Accelerator pedal position sensor circuit range/performance DTC detecting condition Rationally incorrect voltage is sent to ECM compared with the signals from APP sensor 1 and APP sensor 2. Possible cause ● Harness or connector (APP sensor 1 and 2 circuit is open or shorted.) (TP sensor circuit is shorted.) ● Accelerator pedal position sensor (APP sensor 1 and 2) ● Electric throttle control actuator (TP sensor 1 and 2) FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up. Engine operating condition in fail-safe mode The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. Revision: July 2006 EC-648 2006 Quest DTC P2138 APP SENSOR DTC Confirmation Procedure EBS00R9M A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle. WITH CONSULT-II 1. 2. 3. 4. C Turn ignition switch ON. Select “DATA MONITOR” mode with CONSULT-II. Start engine and let it idle for 1 second. If DTC is detected, go to EC-652, "Diagnostic Procedure" . D E F SEF058Y WITH GST G Follow the procedure “WITH CONSULT-II” above. H I J K L M Revision: July 2006 EC-649 2006 Quest DTC P2138 APP SENSOR Wiring Diagram EBS00R9N BBWA1641E Revision: July 2006 EC-650 2006 Quest DTC P2138 APP SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 47 EC WIRE COLOR R A ITEM Throttle position sensor power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) Approximately 5V C Approximately 0V D Approximately 0V E [Engine is running] 82 B APP sensor 1 ground ● Warm-up condition ● Idle speed [Engine is running] 83 G APP sensor 2 ground ● Warm-up condition ● Idle speed 90 R/V APP sensor 1 power supply [Ignition switch: ON] Approximately 5V 91 O APP sensor 2 power supply [Ignition switch: ON] Approximately 5V F [Ignition switch: ON] 98 W/B Accelerator pedal position sensor 2 ● Engine stopped ● Accelerator pedal: Fully released 0.25 - 0.5V G [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed 0.2 - 2.5V H 0.5 - 1.0V I 4.2 - 4.8V J [Ignition switch: ON] 106 W Accelerator pedal position sensor 1 ● Engine stopped ● Accelerator pedal: Fully released [Ignition switch: ON] ● Engine stopped ● Accelerator pedal: Fully depressed K L M Revision: July 2006 EC-651 2006 Quest DTC P2138 APP SENSOR Diagnostic Procedure EBS00R9O 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. Revision: July 2006 EC-652 2006 Quest DTC P2138 APP SENSOR 2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT 1. 2. A Disconnect accelerator pedal position (APP) sensor harness connector. Turn ignition switch ON. EC C D BBIA0335E 3. Check voltage between APP sensor terminals 7 and ground with CONSULT-II or tester. E Voltage: Approximately 5V F OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. G PBIB1851E H 3. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I I Check voltage between APP sensor terminal 6 and ground with CONSULT-II or tester. 1. Voltage: Approximately 5V J OK or NG OK >> GO TO 8. NG >> GO TO 4. K PBIB1852E L 4. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II 1. 2. 3. M Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between APP sensor terminal 6 and ECM terminal 91. Refer to wiring diagram. Continuity should exist. OK or NG OK >> GO TO 5. NG >> Repair open circuit. Revision: July 2006 EC-653 2006 Quest DTC P2138 APP SENSOR 5. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III Check harness for short to power and short to ground, between the following terminals. ECM terminal Sensor terminal Reference Wiring Diagram 91 APP sensor terminal 6 EC-650 47 Electric throttle control actuator terminal 1 EC-642 OK or NG OK >> GO TO 6. NG >> Repair short to ground or short to power in harness or connectors. 6. CHECK THROTTLE POSITION SENSOR Refer to EC-647, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> GO TO 7. 7. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR 1. 2. 3. Replace electric throttle control actuator. Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . >> INSPECTION END 8. CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between APP sensor terminals 1 and ECM terminal 82, APP sensor terminal 3 and ECM terminal 83. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 106 and APP sensor terminal 2, ECM terminal 98 and APP sensor terminal 5. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 10. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-654 2006 Quest DTC P2138 APP SENSOR 10. CHECK APP SENSOR A Refer to EC-655, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> GO TO 11. EC 11. REPLACE ACCELERATOR PEDAL ASSEMBLY C 1. 2. 3. 4. D Replace accelerator pedal assembly. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . E >> INSPECTION END 12. CHECK INTERMITTENT INCIDENT F Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . G >> INSPECTION END Component Inspection EBS00R9P ACCELERATOR PEDAL POSITION SENSOR H 1. 2. 3. I Reconnect all harness connectors disconnected. Turn ignition switch ON. Check voltage between ECM terminals 106 (APP sensor 1 signal), 98 (APP sensor 2 signal) and ground under the following conditions. Terminal 106 (Accelerator pedal position sensor 1) 98 (Accelerator pedal position sensor 2) 4. 5. 6. 7. Accelerator pedal Voltage Fully released 0.5 - 1.0V Fully depressed 4.2 - 4.8V Fully released 0.25 - 0.5V Fully depressed 0.2 - 2.5V J K MBIB0023E If NG, replace accelerator pedal assembly and go to next step. Perform EC-82, "Accelerator Pedal Released Position Learning" . Perform EC-82, "Throttle Valve Closed Position Learning" . Perform EC-82, "Idle Air Volume Learning" . Removal and Installation M EBS00R9Q ACCELERATOR PEDAL Refer to ACC-3, "ACCELERATOR CONTROL SYSTEM" . Revision: July 2006 EC-655 L 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 DTC P2A00, P2A03 A/F SENSOR 1 Component Description PFP:22693 EBS00R9R The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element. The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range (0.7 < < air). The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. SEF579Z An electronic circuit controls the pump current through the oxygenpump cell so that the composition of the exhaust gas in the diffusion gap remains constant at = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F). SEF580Z CONSULT-II Reference Value in Data Monitor Mode EBS00R9S Specification data are reference values. MONITOR ITEM A/F SEN1 (B1) A/F SEN1 (B2) CONDITION ● Engine: After warming up SPECIFICATION Maintaining engine speed at 2,000 rpm Fluctuates around 1.5V On Board Diagnosis Logic EBS00R9T To judge the malfunction, the A/F signal computed by ECM from the air fuel ratio (A/F) sensor 1 signal is monitored not to be shifted to LEAN side or RICH side. DTC No. P2A00 2A00 (Bank 1) P2A03 2A03 (Bank 2) Trouble diagnosis name DTC detecting condition ● Air fuel ratio (A/F) sensor 1 circuit range/performance Revision: July 2006 ● The output voltage computed by ECM from the A/F sensor 1 signal is shifted to the lean side for a specified period. The A/F signal computed by ECM from the A/F sensor 1 signal is shifted to the rich side for a specified period. EC-656 Possible Cause ● Air fuel ratio (A/F) sensor 1 ● Air fuel ratio (A/F) sensor 1 heater ● Fuel pressure ● Fuel injector ● Intake air leaks 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 DTC Confirmation Procedure EBS00R9U A NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. EC TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11V at idle. WITH CONSULT-II 1. 2. 3. 4. 5. 6. 7. 8. 9. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. Clear the self-learning coefficient by touching “CLEAR”. Turn ignition switch OFF and wait at least 10 seconds. Start engine and keep the engine speed between 3,500 and 4,000 rpm for 1 minute under no load. Let engine idle for 1 minute. Keep engine speed between 2,500 and 3,000 rpm for 20 minutes. If 1st trip DTC is detected, go to EC-662, "Diagnostic Procedure" . C D E F G SEF968Y H WITH GST 1. 2. 3. 4. 5. Start engine and warm it up to normal operating temperature. Turn ignition switch OFF and wait at least 10 seconds. Disconnect mass air flow sensor harness connector. Start engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. 6. Select “Service $03” with GST and make sure that DTC P0102 is detected. 7. Select “Service $04” with GST and erase the DTC P0102. 8. Start engine and keep the engine speed between 3,500 and 4,000 rpm for 1 minute under no load. 9. Let engine idle for 1 minute. 10. Keep engine speed between 2,500 and 3,000 rpm for 20 minutes. 11. Select “Service $07” with GST. If 1st trip DTC is detected, go to EC-662, "Diagnostic Procedure" . Revision: July 2006 EC-657 I J K L BBIA0327E M 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 Wiring Diagram EBS00R9V BANK 1 BBWA2014E Revision: July 2006 EC-658 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) C Approximately 5V [Engine is running] 2 R/G A/F sensor 1 heater (Bank 1) ● Warm-up condition ● Idle speed D E PBIB1584E 16 35 Approximately 3.1V BR [Engine is running] O/B 56 V 75 P A/F sensor 1 (Bank 1) ● Warm-up condition ● Idle speed F Approximately 2.6V Approximately 2.3V Approximately 2.3V G : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) H I J K L M Revision: July 2006 EC-659 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 BANK 2 BBWA2015E Revision: July 2006 EC-660 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. A CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) C Approximately 5V [Engine is running] 24 W A/F sensor 1 heater (Bank 2) ● Warm-up condition ● Idle speed D E PBIB1584E 57 58 Approximately 2.6V W/R [Engine is running] LG/R 76 O 77 LG A/F sensor 1 (Bank 2) ● Warm-up condition ● Idle speed F Approximately 2.3V Approximately 3.1V Approximately 2.3V G : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) H I J K L M Revision: July 2006 EC-661 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 Diagnostic Procedure EBS00R9W 1. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. RETIGHTEN AIR FUEL RATIO (A/F) SENSOR 1 Loosen and retighten the air fuel ratio (A/F) sensor 1. BBIA0234E Tightening torque: 50 N-m (5.1 kg-m, 37 ft-lb) >> GO TO 3. Revision: July 2006 EC-662 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 3. CHECK FOR INTAKE AIR LEAK A 1. Start engine and run it at idle. 2. Listen for an intake air leak after the mass air flow sensor. OK or NG OK >> GO TO 4. NG >> Repair or replace. EC C 4. CLEAR THE SELF-LEARNING DATA. 1. 2. 3. 4. With CONSULT-II Start engine and warm it up to normal operating temperature. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II. Clear the self-learning control coefficient by touching “CLEAR”. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P0172, P0174 and P0175 detected? Is it difficult to start engine? D E F G SEF968Y Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. 6. Make sure DTC P0102 is displayed. 7. Erase the DTC memory. Refer to EC-64, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" . 8. Make sure DTC P0000 is displayed. 9. Run engine for at least 10 minutes at idle speed. BBIA0327E Is the 1st trip DTC P0171, P0172, P0174 and P0175 detected? Is it difficult to start engine? Yes or No Yes >> Perform trouble diagnosis for DTC P0171, P0172, P0174 and P0175. Refer to EC-331, "DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION" or EC-343, "DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION" . No >> GO TO 5. 1. 2. 3. 4. 5. Revision: July 2006 EC-663 2006 Quest H I J K L M DTC P2A00, P2A03 A/F SENSOR 1 5. CHECK HARNESS CONNECTOR 1. 2. Turn ignition switch OFF. Disconnect A/F sensor 1 harness connector (1) (2). BBIA0656E : Vehicle front 3. Intake manifold collector 3. Check harness connector for water. Water should not exist. OK or NG OK >> GO TO 6. NG >> Repair or replace harness connector. 6. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 8. NG >> GO TO 7. PBIB1683E 7. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 ● IPDM E/R harness connector E122 ● 15A fuse ● Harness for open or short between A/F sensor 1 and fuse ● >> Repair or replace harness or connectors. Revision: July 2006 EC-664 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. A Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to Wiring Diagram. EC A/F sensor 1 terminal ECM terminal 1 16 2 75 5 35 6 56 1 76 2 77 5 57 6 58 Bank1 Bank 2 C D E F Continuity should exist. 4. G Check harness continuity between the following terminals and ground. Refer to Wiring Diagram. Bank 1 Bank 2 H A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 I J Continuity should not exist. 5. Also check harness for short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. K L 9. CHECK A/F SENSOR 1 HEATER M Refer to EC-179, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> GO TO 11. 10. CHECK INTERMITTENT INCIDENT Perform EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> GO TO 11. NG >> Repair or replace. Revision: July 2006 EC-665 2006 Quest DTC P2A00, P2A03 A/F SENSOR 1 11. REPLACE AIR FUEL RATIO (A/F) SENSOR 1 Replace malfunctioning air fuel ratio (A/F) sensor 1. CAUTION: ● Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one. ● Before installing new air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. >> INSPECTION END Removal and Installation EBS00R9X AIR FUEL RATIO (A/F) SENSOR 1 Refer to EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST" . Revision: July 2006 EC-666 2006 Quest ASCD BRAKE SWITCH ASCD BRAKE SWITCH Component Description PFP:25320 A EBS00R9Y When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. ECM detects the state of the brake pedal by this input of two kinds (ON/OFF signal). Refer to EC-31, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function. EC C D BBIA0329E E CONSULT-II Reference Value in Data Monitor Mode EBS00R9Z Specification data are reference values. MONITOR ITEM BRAKE SW1 (ASCD brake switch) BRAKE SW2 (Stop lamp switch) CONDITION ● ● Ignition switch: ON Ignition switch: ON SPECIFICATION Brake pedal: Fully released ON Brake pedal: Slightly depressed OFF Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON F G H I J K L M Revision: July 2006 EC-667 2006 Quest ASCD BRAKE SWITCH Wiring Diagram EBS00RA0 BBWA1650E Revision: July 2006 EC-668 2006 Quest ASCD BRAKE SWITCH Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. EC WIRE COLOR ITEM CONDITION [Ignition switch: OFF] ● 101 R/G Stop lamp switch Brake pedal: Fully released [Ignition switch: OFF] ● Brake pedal: Slightly depressed [Ignition switch: ON] ● 108 G/B A ASCD brake switch Brake pedal: Fully released [Ignition switch: ON] ● Brake pedal: Slightly depressed Diagnostic Procedure DATA (DC Voltage) C Approximately 0V BATTERY VOLTAGE (11 - 14V) D BATTERY VOLTAGE (11 - 14V) E Approximately 0V EBS00RA1 F 1. CHECK OVERALL FUNCTION-I G With CONSULT-II 1. Turn ignition switch ON. 2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II. 3. Check “BRAKE SW1” indication under the following conditions. CONDITION H INDICATION Brake pedal: Slightly depressed OFF Brake pedal: Fully released ON I J K SEC011D 1. 2. Without CONSULT-II Turn ignition switch ON. Check voltage between ECM terminal 108 and ground under the following conditions. CONDITION Brake pedal: Slightly depressed Brake pedal: Fully released L M VOLTAGE Approximately 0V Battery voltage OK or NG OK >> GO TO 2. NG >> GO TO 3. MBIB0061E Revision: July 2006 EC-669 2006 Quest ASCD BRAKE SWITCH 2. CHECK OVERALL FUNCTION-II With CONSULT-II Check “BRAKE SW2” indication in “DATA MONITOR” mode. CONDITION INDICATION Brake pedal: Fully released OFF Brake pedal: Slightly depressed ON SEC013D Without CONSULT-II Check voltage between ECM terminal 101 and ground under the following conditions. CONDITION Brake pedal: Fully released Brake pedal: Slightly depressed VOLTAGE Approximately 0V Battery voltage OK or NG OK >> INSPECTION END NG >> GO TO 7. PBIB1677E 3. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT 1. 2. 3. Turn ignition switch OFF. Disconnect ASCD brake switch harness connector. Turn ignition switch ON. BBIA0329E 4. Check voltage between ASCD brake switch terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 5. NG >> GO TO 4. PBIB0857E Revision: July 2006 EC-670 2006 Quest ASCD BRAKE SWITCH 4. DETECT MALFUNCTIONING PART A Check the following. ● Fuse block (J/B) connector E30 ● 10A fuse ● Harness for open or short between ASCD brake switch and fuse EC C >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. D Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 108 and ASCD brake switch terminal 2. Refer to Wiring Diagram. E Continuity should exist. F 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. G 6. CHECK ASCD BRAKE SWITCH H Refer to EC-673, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> Replace ASCD brake switch. I 7. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT J 1. 2. K Turn ignition switch OFF. Disconnect stop lamp switch harness connector. L M BBIA0329E 3. Check voltage between stop lamp switch terminal 1 and ground with CONSULT -II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 9. NG >> GO TO 8. PBIB1184E Revision: July 2006 EC-671 2006 Quest ASCD BRAKE SWITCH 8. DETECT MALFUNCTIONING PART Check the following. ● Fuse block (J/B) connector E30 ● 10A fuse ● Harness for open or short between stop lamp switch and battery >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. Disconnect ECM harness connector. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 10. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 10. CHECK STOP LAMP SWITCH Refer to EC-673, "Component Inspection" . OK or NG OK >> GO TO 11. NG >> Replace stop lamp switch. 11. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-672 2006 Quest ASCD BRAKE SWITCH Component Inspection EBS00RA2 A ASCD BRAKE SWITCH 1. 2. 3. Turn ignition switch OFF. Disconnect ASCD brake switch harness connector. Check harness continuity between ASCD brake switch terminals 1 and 2 under the following conditions. Condition Brake pedal: Fully released Brake pedal: Slightly depressed EC Continuity C Should exist Should not exist D If NG, adjust ASCD brake switch installation, refer to BR-6, "BRAKE PEDAL" , and perform step 3 again. E SEC023D STOP LAMP SWITCH 1. 2. 3. Turn ignition switch OFF. Disconnect stop lamp switch harness connector. Check harness continuity between stop lamp switch terminals 1 and 2 under the following conditions. Condition Brake pedal: Fully released Brake pedal: Slightly depressed F G Continuity Should not exist H Should exist If NG, adjust stop lamp switch installation, refer to BR-6, "BRAKE PEDAL" , and perform step 3 again. I PBIB1535E J K L M Revision: July 2006 EC-673 2006 Quest ASCD INDICATOR ASCD INDICATOR Component Description PFP:24814 EBS00RA3 ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and SET, and is integrated in combination meter. CRUISE indicator illuminates when MAIN switch on ASCD steering switch is turned ON to indicate that ASCD system is ready for operation. SET indicator illuminates when following conditions are met. ● CRUISE indicator is illuminated. ● SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of ASCD setting. SET indicator remains lit during ASCD control. Refer to EC-31, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function. CONSULT-II Reference Value in Data Monitor Mode EBS00RA4 Specification data are reference value. MONITOR ITEM CRUISE LAMP SET LAMP Revision: July 2006 CONDITION SPECIFICATION ● Ignition switch: ON MAIN switch: Pressed at the 1st time → at the 2nd time ON → OFF ● MAIN switch: ON ASCD: Operating ON ● When vehicle speed is between 40 km/h (25 MPH) and 144 km/h (89 MPH) ASCD: Not operating OFF EC-674 2006 Quest ASCD INDICATOR Wiring Diagram EBS00RA5 A EC C D E F G H I J K L M BBWA2009E Revision: July 2006 EC-675 2006 Quest ASCD INDICATOR Diagnostic Procedure EBS00RA6 1. CHECK OVERALL FUNCTION Check ASCD indicator under the following conditions. ASCD INDICATOR CRUISE LAMP SET LAMP CONDITION SPECIFICATION ● Ignition switch: ON MAIN switch: Pressed at the 1st time → at the 2nd time ON → OFF ● MAIN switch: ON ASCD: Operating ON ● When vehicle speed is between 40 km/h (25 MPH) and 144 km/h (89 MPH) ASCD: Not operating OFF OK or NG OK >> INSPECTION END NG >> GO TO 2. 2. CHECK DTC Check that DTC U1000 or U1001 is not displayed. OK or NG OK >> GO TO 3. NG >> Perform trouble diagnoses for DTC U1000, U1001. Refer to EC-162, "DTC U1000, U1001 CAN COMMUNICATION LINE" . 3. CHECK COMBINATION METER OPERATION Does combination meter operate normally? Yes or No Yes >> GO TO 4. No >> Check combination meter circuit. Refer to DI-5, "COMBINATION METERS" . 4. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-676 2006 Quest ELECTRICAL LOAD SIGNAL ELECTRICAL LOAD SIGNAL Description PFP:25350 A EBS00RA7 The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred through the CAN communication line from BCM to ECM via IPDM E/R. EC CONSULT-II Reference Value in Data Monitor Mode EBS00RA8 Specification data are reference values. MONITOR ITEM LOAD SIGNAL ● HEATER FAN SW C CONDITION ● Ignition switch: ON Ignition switch: ON SPECIFICATION Rear window defogger switch is ON and/or lighting switch is in 2nd. ON Rear window defogger switch is OFF and lighting switch is OFF. OFF Heater fan is operating. ON Heater fan is not operating. OFF Diagnostic Procedure D E EBS00RA9 1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I 1. 2. 3. Turn ignition switch ON. Connect CONSULT-II and select “DATA MONITOR” mode. Select “LOAD SIGNAL” and check indication under the following conditions. Condition Indication Rear window defogger switch: ON ON Rear window defogger switch: OFF OFF F G H I OK or NG OK >> GO TO 2. NG >> GO TO 4. J PBIB0103E K 2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II Check “LOAD SIGNAL” indication under the following conditions. L Condition Indication Lighting switch: ON at 2nd position ON Lighting switch: OFF OFF M OK or NG OK >> GO TO 3. NG >> GO TO 5. PBIB0103E Revision: July 2006 EC-677 2006 Quest ELECTRICAL LOAD SIGNAL 3. CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION With CONSULT-II Check “HEATER FAN SW” in “DATA MONITOR” mode with CONSULT-II under the following conditions. Condition LOAD SIGNAL Heater fan control switch: ON ON Heater fan control switch: OFF OFF OK or NG OK >> INSPECTION END. NG >> GO TO 6. PBIB1995E 4. CHECK REAR WINDOW DEFOGGER SYSTEM Refer to GW-92, "REAR WINDOW DEFOGGER" . >> INSPECTION END 5. CHECK HEADLAMP SYSTEM Refer to LT-5, "HEADLAMP (FOR USA)" or LT-32, "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -" . >> INSPECTION END 6. CHECK HEATER FAN CONTROL SYSTEM Refer to ATC-32, "TROUBLE DIAGNOSIS" or MTC-32, "TROUBLE DIAGNOSIS" . >> INSPECTION END Revision: July 2006 EC-678 2006 Quest ELECTRONIC CONTROLLED ENGINE MOUNT ELECTRONIC CONTROLLED ENGINE MOUNT System Description Sensor Input Signal to ECM PFP:11270 A EBS00RAA ECM function Actuator EC Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed Wheel sensor* Vehicle speed Engine mount control Electronic controlled engine mount C *: This signal is sent to the ECM through CAN communication line. The ECM controls the engine mount operation corresponding to the engine speed and the vehicle speed. The control system has 2-step control [Soft/Hard] Vehicle condition Engine speed is below 950 rpm Soft Engine speed is above 950 rpm Hard E CONSULT-II Reference Value in Data Monitor Mode EBS00RAB F Specification data are reference values. MONITOR ITEM ENGINE MOUNT CONDITION ● Engine: Running D Engine mount control SPECIFICATION Engine speed is below 950 rpm IDLE Engine speed is above 950 rpm TRVL G H I J K L M Revision: July 2006 EC-679 2006 Quest ELECTRONIC CONTROLLED ENGINE MOUNT Wiring Diagram EBS00RAC BBWA2007E Revision: July 2006 EC-680 2006 Quest ELECTRONIC CONTROLLED ENGINE MOUNT Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. A EC WIRE COLOR ITEM CONDITION [Engine is running] ● Engine speed is above 950 rpm. DATA (DC Voltage) BATTERY VOLTAGE (11 - 14V) C 0 - 1.0V D 2.0 - 3.0V E BATTERY VOLTAGE (11 - 14V) F [Engine is running] 8 W Electronic controlled engine mount-1 ● For 2 seconds after engine speed is 950 rpm or less. [Engine is running] ● 2 seconds after engine speed is 950 rpm or less. [Engine is running] ● Engine speed is below 950 rpm. [Engine is running] 9 W/R Electronic controlled engine mount-2 ● For 2 seconds after engine speed is 950 rpm or more. 0 - 1.0V G [Engine is running] ● 2 seconds after engine speed is 950 rpm or more. Diagnostic Procedure 2.0 - 3.0V H EBS00RAD 1. CHECK OVERALL FUNCTION I With CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Select “ENGINE MOUNTING” in “ACTIVE TEST” mode with CONSULT-II and touch “ON/OFF” on the CINSULT-II screen. 3. Check that the motor operating sound is heard from front electronic controlled engine mount for about 0.5 seconds according to the switching condition of “ENGINE MOUNTING”. J K L SEC237C Without CONSULT-II Make sure that gear position is P. Start engine and let it idle. Change the engine speed from idle to more than 1,000 rpm and then return to idle (with vehicle stopped). Check that the motor operating sound is heard from front electronic controlled engine mount for about 0.5 seconds when changing engine speed. It is better to hear the operating sound around the left side front wheel house. OK or NG OK >> INSPECTION END NG >> GO TO 2. 1. 2. 3. 4. Revision: July 2006 EC-681 2006 Quest M ELECTRONIC CONTROLLED ENGINE MOUNT 2. CHECK ELECTRONIC CONTROLLED ENGINE MOUNT POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect electronic controlled engine mount harness connector. BBIA0325E 3. Check voltage between electronic controlled engine mount terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. SEC920C 3. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E8, F17 ● Fuse block (J/B) connector E30 ● 15A fuse ● Harness for open and short between electronic controlled engine mount and battery >> Repair harness or connectors. 4. CHECK ELECTRONIC CONTROLLED ENGINE MOUNT OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminals and electronic engine mount terminals as follows. Refer to Wiring Diagram. ECM terminal Front electronic controlled engine mount terminal 8 1 9 2 Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-682 2006 Quest ELECTRONIC CONTROLLED ENGINE MOUNT 5. CHECK ELECTRONIC CONTROLLED ENGINE MOUNT A Visually check electronic controlled engine mount. OK or NG OK >> GO TO 6. NG >> Replace electronic controlled engine mount. EC 6. CHECK INTERMITTENT INCIDENT C Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . D >> INSPECTION END E F G H I J K L M Revision: July 2006 EC-683 2006 Quest FUEL INJECTOR FUEL INJECTOR Component Description PFP:16600 EBS00RAE The fuel injector is a small, precise solenoid valve. When the ECM supplies a ground to the fuel injector circuit, the coil in the fuel injector is energized. The energized coil pulls the ball valve back and allows fuel to flow through the fuel injector into the intake manifold. The amount of fuel injected depends upon the injection pulse duration. Pulse duration is the length of time the fuel injector remains open. The ECM controls the injection pulse duration based on engine fuel needs. SEF375Z CONSULT-II Reference Value in Data Monitor Mode EBS00RAF Specification data are reference values. MONITOR ITEM B/FUEL SCHDL INJ PULSE-B1 INJ PULSE-B2 Revision: July 2006 CONDITION ● EC-142, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE". ● Engine: After warming up ● Shift lever: P or N ● Air conditioner switch: OFF ● No load SPECIFICATION Idle 2.0 - 3.0 msec 2,000 rpm 1.9 - 2.9 msec EC-684 2006 Quest FUEL INJECTOR Wiring Diagram EBS00RAG A EC C D E F G H I J K L M BBWA2027E Revision: July 2006 EC-685 2006 Quest FUEL INJECTOR Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) BATTERY VOLTAGE [Engine is running] 21 22 23 40 41 42 L/W R/Y R/B V/W*1 Fuel injector No. 5 Fuel injector No. 3 Fuel injector No. 1 Fuel injector No. 6 P/R*2 R/L R/W Fuel injector No. 4 Fuel injector No. 2 ● Warm-up condition ● Idle speed (11 - 14V) NOTE: The pulse cycle changes depending on rpm at idle SEC984C BATTERY VOLTAGE (11 - 14V) [Engine is running] ● Warm-up condition ● Engine speed is 2,000 rpm. SEC985C *1:4-speed A/T models *2:5-speed A/T models : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Diagnostic Procedure EBS00RAH 1. INSPECTION START Turn ignition switch to START. Is any cylinder ignited? Yes or No Yes (With CONSULT-II)>>GO TO 2. Yes (Without CONSULT-II)>>GO TO 3. No >> GO TO 7. Revision: July 2006 EC-686 2006 Quest FUEL INJECTOR 2. CHECK OVERALL FUNCTION A With CONSULT-II Start engine. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II. 3. Make sure that each circuit produces a momentary engine speed drop. 1. 2. EC C D E PBIB0133E OK or NG OK >> INSPECTION END NG >> GO TO 7. F G H I J K L M Revision: July 2006 EC-687 2006 Quest FUEL INJECTOR 3. CHECK FUNCTION OF FUEL INJECTOR-I 1. 2. 3. – – Without CONSULT-II Stop engine. Disconnect harness connector F44 (2), F101 (3). Turn ignition switch ON. : Vehicle front 1: Intake manifold collector BBIA0657E 4. Check voltage between harness connector F44 terminal 5 and ground with CONSULT-II or tester. Voltage: Battery voltage 5. 6. 7. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between harness connector F44 terminal and ECM terminal as follows. Refer to Wiring Diagram. Cylinder Harness connector F44 terminal ECM terminal 1 6 23 3 2 22 5 1 21 PBIB2323E Continuity should exist. 8. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 5. NG >> GO TO 4. 4. DETECT MALFUNCTIONING PART Check the following. Harness connectors E8, F17 ● Fuse block (J/B) connector E30 ● 10A fuse ● Harness for open or short between harness connector F44 and fuse ● Harness for open or short between harness connector F44 and ECM ● >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-688 2006 Quest FUEL INJECTOR 5. CHECK FUNCTION OF FUEL INJECTOR-II A Provide battery voltage between harness connector F101 as follows and then interrupt it. Listen to each fuel injector operating sound. EC Harness connector F101 terminal Cylinder (+) (–) 1 5 6 3 5 2 5 5 1 C D Operating sound should exist. PBIB2324E OK or NG OK >> GO TO 6. NG >> GO TO 7. E 6. CHECK FUNCTION OF FUEL INJECTOR-III 1. 2. 3. F Reconnect all harness connector disconnected. Start engine. Listen to fuel injectors No. 2, No. 4, No.6 operating sound. G Clicking noise should exist. H OK or NG OK >> INSPECTION END NG >> GO TO 7. I J PBIB1986E K L M Revision: July 2006 EC-689 2006 Quest FUEL INJECTOR 7. CHECK FULE INJECTOR POWER SUPPLY CIRCUIT 1. 2. Turn ignition switch OFF. Disconnect fuel injector harness connector. BBIA0237E 3. 4. Turn ignition switch ON. Check voltage between fuel injector terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 9. NG >> GO TO 8. PBIB0582E 8. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E8, F17 ● Harness connectors F44, F101 ● Fuse block (J/B) connector E30 ● 10A fuse ● Harness for open or short between fuel injector and fuse >> Repair harness or connectors. 9. CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between fuel injector terminal 2 and ECM terminals 21, 22, 23, 40, 41, 42. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 11. NG >> GO TO 10. Revision: July 2006 EC-690 2006 Quest FUEL INJECTOR 10. DETECT MALFUNCTIONING PART A Check the following. ● Harness connectors F101, F44 ● Harness for open or short between fuel injector and ECM EC >> Repair open circuit or short to ground or short to power in harness or connectors. C 11. CHECK FUEL INJECTOR Refer to EC-691, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> Replace fuel injector. D E 12. CHECK INTERMITTENT INCIDENT F Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END G Component Inspection EBS00RAI FUEL INJECTOR 1. 2. Disconnect fuel injector harness connector. Check resistance between terminals as shown in the figure. H Resistance: 11.1 - 14.5Ω [at 10 - 60°C (50 - 140°F)] I J K PBIB1727E Removal and Installation EBS00RAJ FUEL INJECTOR L Refer to EM-39, "FUEL INJECTOR AND FUEL TUBE" . M Revision: July 2006 EC-691 2006 Quest FUEL PUMP FUEL PUMP Description PFP:17042 EBS00RAK SYSTEM DESCRIPTION Sensor Input Signal to ECM Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed* Battery Battery voltage* ECM Function Actuator Fuel pump control Fuel pump relay *: ECM determines the start signal status by the signals of engine speed and battery voltage. The ECM activates the fuel pump for 1 second after the ignition switch is turned ON to improve engine startability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump. Condition Fuel pump operation Ignition switch is turned to ON. Operates for 1 second. Engine running and cranking Operates. When engine is stopped Stops in 1.5 seconds. Except as shown above Stops. COMPONENT DESCRIPTION A turbine type design fuel pump is used in the fuel tank. BBIA0081E CONSULT-II Reference Value in Data Monitor Mode EBS00RAL Specification data are reference values. MONITOR ITEM FUEL PUMP RLY Revision: July 2006 CONDITION ● For 1 second after turning ignition switch ON ● Engine running or cranking ● Except above conditions SPECIFICATION ON OFF EC-692 2006 Quest FUEL PUMP Wiring Diagram EBS00RAM A EC C D E F G H I J K L M BBWA1647E Revision: July 2006 EC-693 2006 Quest FUEL PUMP Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) [Ignition switch: ON] ● 113 B/O Fuel pump relay For 1 second after turning ignition switch ON 0 - 1.5V [Engine is running] [Ignition switch: ON] ● More than 1 second after turning ignition switch ON Diagnostic Procedure BATTERY VOLTAGE (11 - 14V) EBS00RAN 1. CHECK OVERALL FUNCTION 1. 2. Turn ignition switch ON. Pinch fuel feed hose with two fingers. Fuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ON. OK or NG OK >> INSPECTION END NG >> GO TO 2. BBIA0340E 2. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Turn ignition switch ON. Check voltage between ECM terminal 113 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 4. NG >> GO TO 3. PBIB1187E Revision: July 2006 EC-694 2006 Quest FUEL PUMP 3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I 1. 2. 3. A Turn ignition switch OFF. Disconnect IPDM E/R harness connector E124. Check harness continuity between IPDM E/R terminal 40 and ECM terminal 113. Refer to Wiring Diagram. EC Continuity should exist. C 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 13. NG >> Repair open circuit or short to power or short to ground in harness or connectors. D 4. CHECK CONDENSER POWER SUPPLY CIRCUIT-I 1. 2. 3. 4. 5. E Turn ignition switch OFF. Reconnect all harness connectors disconnected. Disconnect condenser harness connector. Turn ignition switch ON. Check voltage between condenser terminal 1 and ground with CONSULT-II or tester. Voltage: F G Battery voltage should exist for 1 second after ignition switch is turned ON. H OK or NG OK >> GO TO 8. NG >> GO TO 5. I PBIB0624E J 5. CHECK 15A FUSE K 1. Turn ignition switch OFF. 2. Disconnect 15A fuse. 3. Check 15A fuse. OK or NG OK >> GO TO 6. NG >> Replace fuse. L M 6. CHECK CONDENSER POWER SUPPLY CIRCUIT-II 1. 2. Disconnect IPDM E/R harness connector E124. Check harness continuity between IPDM E/R terminal 39 and condenser terminal 1. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 13. NG >> GO TO 7. Revision: July 2006 EC-695 2006 Quest FUEL PUMP 7. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors B107, E139 ● Harness for open or short between IPDM E/R and condenser >> Repair harness or connectors. 8. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between condenser terminal 2 and ground. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to power in harness or connectors. 9. CHECK CONDENSER Refer to EC-697, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace condenser. 10. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect “fuel level sensor unit and fuel pump” harness connector. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 1 and harness connector B107 terminal 1, “fuel level sensor unit and fuel pump” terminal 3 and ground. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 12. NG >> GO TO 11. BBIA0236E 11. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors B107, E139 ● Harness connectors B148, E251 ● Harness for open or short between IPDM E/R and “fuel level sensor unit and fuel pump” ● Harness for open or short between “fuel level sensor unit and fuel pump”and ground >> Repair harness or connectors. Revision: July 2006 EC-696 2006 Quest FUEL PUMP 12. CHECK FUEL PUPMP A Refer to EC-697, "Component Inspection" . OK or NG OK >> GO TO 13. NG >> Replace “fuel level sensor unit and fuel pump”. EC 13. CHECK INTERMITTENT INCIDENT C Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> Replace IPDM E/R. NG >> Repair or replace harness or connectors. D Component Inspection EBS00RAO E FUEL PUMP 1. 2. Disconnect “fuel level sensor unit and fuel pump” harness connector. Check resistance between “fuel level sensor unit and fuel pump” terminals 1 and 3. F Resistance: Approximately 0.2 - 5.0Ω [at 25°C (77°F)] G H SEC918C I CONDENSER 1. 2. 3. Turn ignition switch OFF. Disconnect condenser harness connector. Check resistance between condenser terminals as 1 and 2. Resistance J K Above 1 MΩ at 25°C (77°F) L M PBIB0794E Removal and Installation EBS00RAP FUEL PUMP Refer to FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Revision: July 2006 EC-697 2006 Quest IGNITION SIGNAL IGNITION SIGNAL Component Description PFP:22448 EBS00RAQ IGNITION COIL & POWER TRANSISTOR The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON-OFF operation induces the proper high voltage in the coil secondary circuit. BBIA0244E Revision: July 2006 EC-698 2006 Quest IGNITION SIGNAL Wiring Diagram EBS00RAR A EC C D E F G H I J K L M BBWA1642E Revision: July 2006 EC-699 2006 Quest IGNITION SIGNAL Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION [Engine is running] [Ignition switch: OFF] ● 111 W/B ECM relay (Self shut-off) [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM Revision: July 2006 For a few seconds after turning ignition switch OFF More than a few seconds after turning ignition switch OFF [Ignition switch: ON] EC-700 DATA (DC Voltage) 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) 2006 Quest IGNITION SIGNAL A EC C D E F G H I J K L M BBWA1643E Revision: July 2006 EC-701 2006 Quest IGNITION SIGNAL Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION [Engine is running] 60 61 62 P/L L/R Y/R Ignition signal No. 5 Ignition signal No. 3 Ignition signal No. 1 ● Warm-up condition ● Idle speed DATA (DC Voltage) 0 - 0.4V NOTE: The pulse cycle changes depending on rpm at idle SEC986C 0.1 - 0.6V [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm. SEC987C : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Revision: July 2006 EC-702 2006 Quest IGNITION SIGNAL A EC C D E F G H I J K L M BBWA1644E Revision: July 2006 EC-703 2006 Quest IGNITION SIGNAL Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION [Engine is running] 79 80 81 GR/R GR G/R Ignition signal No. 6 Ignition signal No. 4 Ignition signal No. 2 ● Warm-up condition ● Idle speed DATA (DC Voltage) 0 - 0.4V NOTE: The pulse cycle changes depending on rpm at idle SEC986C 0.1 - 0.6V [Engine is running] ● Warm-up condition ● Engine speed is 2,500 rpm. SEC987C : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) Diagnostic Procedure EBS00RAS 1. CHECK ENGINE START Turn ignition switch OFF, and restart engine. Is engine running? Yes or No Yes (With CONSULT-II)>>GO TO 2. Yes (Without CONSULT-II)>>GO TO 3. No >> GO TO 4. 2. CHECK OVERALL FUNCTION With CONSULT-II 1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II. 2. Make sure that each circuit produces a momentary engine speed drop. OK or NG OK >> INSPECTION END NG >> GO TO 10. PBIB0133E Revision: July 2006 EC-704 2006 Quest IGNITION SIGNAL 3. CHECK OVERALL FUNCTION A Without CONSULT-II Let engine idle. Read the voltage signal between ECM terminals 60, 61, 62, 79, 80, 81 and ground with an oscilloscope. 3. Verify that the oscilloscope screen shows the signal wave as shown below. NOTE: The pulse cycle changes depending on rpm at idle. 1. 2. EC C D E PBIB1186E SEC986C F OK or NG OK >> INSPECTION END NG >> GO TO 10. G 4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I 1. 2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. Check voltage between ECM terminals 119, 120 and ground with CONSULT-II or tester. H I Voltage: Battery voltage OK or NG OK >> GO TO 5. NG >> Go to EC-153, "POWER SUPPLY AND GROUND CIRCUIT" . J K MBIB0034E L M Revision: July 2006 EC-705 2006 Quest IGNITION SIGNAL 5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II 1. 2. 3. Turn ignition switch OFF. Disconnect condenser-1 harness connector. Turn ignition switch ON. WBIA0542E 4. Check voltage between condenser-1 terminal + and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 8. NG >> GO TO 6. PBIB0851E 6. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III 1. 2. 3. Turn ignition switch OFF. Disconnect IPDM E/R harness connector E122. Check harness continuity between IPDM E/R terminal 17 and condenser-1 terminal +. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO EC-153, "POWER SUPPLY AND GROUND CIRCUIT" NG >> GO TO 7. 7. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E5, F14 ● Harness for open or short between IPDM E/R and condenser-1 >> Repair open circuit or short to ground or short to power in harness or connectors. Revision: July 2006 EC-706 2006 Quest IGNITION SIGNAL 8. CHECK CONDENSER-1 GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. A Turn ignition switch OFF. Check harness continuity between condenser-1 terminal – and ground. Refer to Wiring Diagram. EC Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to power in harness or connectors. C D 9. CHECK CONDENSER-1 E Refer to EC-709, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace condenser-1. F 10. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V 1. 2. 3. G Turn ignition switch OFF. Reconnect all harness connectors disconnected. Disconnect ignition coil harness connector. H I J K BBIA0244E 4. 5. Turn ignition switch ON. Check voltage between ignition coil terminal 3 and ground with CONSULT-II or tester. L Voltage: Battery voltage M OK or NG OK >> GO TO 12. NG >> GO TO 11. PBIB0138E 11. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F43, F201 ● Harness for open or short between ignition coil and harness connector F14 >> Repair or replace harness or connectors. Revision: July 2006 EC-707 2006 Quest IGNITION SIGNAL 12. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. Turn ignition switch OFF. Check harness continuity between ignition coil terminal 2 and ground. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to power. OK or NG OK >> GO TO 14. NG >> GO TO 13. 13. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F201, F43 ● Harness for open or short between ignition coil and ground >> Repair open circuit or short to power in harness or connectors. 14. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. Disconnect ECM harness connector. Check harness continuity between ECM terminals 60, 61, 62, 79, 80, 81 and ignition coil terminal 1. Refer to Wiring Diagram. Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 16. NG >> GO TO 15. 15. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors F43, F201 ● Harness for open or short between ignition coil and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 16. CHECK IGNITION COIL WITH POWER TRANSISTOR Refer to EC-709, "Component Inspection" . OK or NG OK >> GO TO 17. NG >> Replace malfunctioning ignition coil with power transistor. 17. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Revision: July 2006 EC-708 2006 Quest IGNITION SIGNAL Component Inspection EBS00RAT A IGNITION COIL WITH POWER TRANSISTOR CAUTION: Do the following procedure in the place where ventilation is good without the combustible. 1. Turn ignition switch OFF. 2. Disconnect ignition coil harness connector. 3. Check resistance between ignition coil terminals as follows. Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)] 1 and 2 Except 0 or ∞ EC C D 1 and 3 2 and 3 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Except 0 If NG, Replace ignition coil with power transistor. If OK, go to next step. Turn ignition switch OFF. Reconnect all harness connectors disconnected. Remove fuel pump fuse in IPDM E/R to release fuel pressure. NOTE: Do not use CONSULT-II to release fuel pressure, or fuel pressure applies again during the following procedure. Start engine. After engine stalls, crank it two or three times to release all fuel pressure. Turn ignition switch OFF. Remove ignition coil harness connectors to avoid the electrical discharge from the ignition coils. Remove ignition coil and spark plug of the cylinder to be checked. Crank engine for five seconds or more to remove combustion gas in the cylinder. Connect spark plug and harness connector to ignition coil. Fix ignition coil using a rope etc. with gap of 13 - 17 mm between the edge of the spark plug and grounded metal portion as shown in the figure. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded part. E PBIB0847E F G H I BBIA0229E J K L Spark should be generated. CAUTION: ● Do not approach to the spark plug and the ignition coil within 50cm. Be careful not to get an electrical shock while checking, because the electrical discharge voltage PBIB2325E becomes 20kV or more. ● It might cause to damage the ignition coil if the gap of more than 17 mm is taken. NOTE: When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning. 17. If NG, Replace ignition coil with power transistor. Revision: July 2006 EC-709 2006 Quest M IGNITION SIGNAL CONDENSER-1 1. 2. 3. Turn ignition switch OFF. Disconnect condenser-1 harness connector. Check resistance between condenser-1 terminals + and –. Resistance Above 1 MΩ at 25°C (77°F) PBIB0848E Removal and Installation EBS00RAU IGNITION COIL WITH POWER TRANSISTOR Refer to EM-35, "IGNITION COIL" . Revision: July 2006 EC-710 2006 Quest REFRIGERANT PRESSURE SENSOR REFRIGERANT PRESSURE SENSOR Component Description PFP:92136 A EBS00RAV The refrigerant pressure sensor is installed in the RH side of the condenser of the air conditioner system. The sensor uses an electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent to ECM, and ECM controls cooling fan system. EC C D BBIA0348E E F G H PBIB2657E I J K L M Revision: July 2006 EC-711 2006 Quest REFRIGERANT PRESSURE SENSOR Wiring Diagram EBS00RAW BBWA1649E Revision: July 2006 EC-712 2006 Quest REFRIGERANT PRESSURE SENSOR Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. 49 EC WIRE COLOR BR/Y A ITEM Refrigerant pressure sensor power supply CONDITION [Ignition switch: ON] DATA (DC Voltage) Approximately 5V C Approximately 0V D [Engine is running] 67 B Sensor ground ● Warm-up condition ● Idle speed [Engine is running] 70 W Refrigerant pressure sensor ● Warm-up condition ● Both A/C switch and blower switch: ON (Compressor operates.) E 1.0 - 4.0V F Diagnostic Procedure EBS00RAX 1. CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION 1. 2. 3. G Start engine and warm it up to normal operating temperature. Turn A/C switch and blower switch ON. Check voltage between ECM terminal 70 and ground with CONSULT-II or tester. H Voltage: 1.0 - 4.0V I OK or NG OK >> INSPECTION END NG >> GO TO 2. J PBIB1188E K L M Revision: July 2006 EC-713 2006 Quest REFRIGERANT PRESSURE SENSOR 2. CHECK GROUND CONNECTIONS 1. 2. Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to EC-161, "Ground Inspection" . BBIA0637E OK or NG OK >> GO TO 3. NG >> Repair or replace ground connections. Revision: July 2006 EC-714 2006 Quest REFRIGERANT PRESSURE SENSOR 3. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT 1. 2. A Disconnect refrigerant pressure sensor harness connector. Turn ignition switch ON. EC C D BBIA0348E 3. E Check voltage between refrigerant pressure sensor terminal 1 and ground with CONSULT-II or tester. Voltage: Approximately 5V F OK or NG OK >> GO TO 5. NG >> GO TO 4. G PBIB0188E H 4. DETECT MALFUNCTIONING PART I Check the following. ● Harness connectors E19, F33 ● Harness for open or short between ECM and refrigerant pressure sensor J >> Repair harness or connectors. 5. CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. 2. 3. 4. Turn ignition switch OFF. Disconnect ECM harness connector. Disconnect TCM harness connector. Check harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 67, TCM terminal 42. Refer to Wiring Diagram. Continuity should exist. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. Revision: July 2006 EC-715 2006 Quest K L M REFRIGERANT PRESSURE SENSOR 6. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E19, F33 ● Harness for open or short between ECM and refrigerant pressure sensor ● Harness for open or short between TCM and refrigerant pressure sensor >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal 70 and refrigerant pressure sensor terminal 2. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> GO TO 8. 8. DETECT MALFUNCTIONING PART Check the following. Harness connectors E19, F33 ● Harness for open or short between ECM and refrigerant pressure sensor ● >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK INTERMITTENT INCIDENT Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . OK or NG OK >> Replace refrigerant pressure sensor. NG >> Repair or replace. Removal and Installation EBS00RAY REFRIGERANT PRESSURE SENSOR Refer to ATC-186, "Removal and Installation for Refrigerant Pressure Sensor" or MTC-168, "Removal and Installation for Refrigerant Pressure Sensor" . Revision: July 2006 EC-716 2006 Quest VIAS VIAS Description PFP:14956 A EBS00RAZ SYSTEM DESCRIPTION Sensor Input Signal to ECM Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed* Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Throttle position sensor Throttle position Accelerator pedal position sensor Accelerator pedal position Battery Battery voltage* ECM function Actuator EC C VIAS control VIAS control solenoid valve D *: ECM determines the start signal status by the signals of engine speed and battery voltage. E F G H I J PBIB1874E When the engine is running at low or medium speed, the power valve is fully closed. Under this condition, the effective suction port length is equivalent to the total length of the intake manifold collector's suction port including the intake valve. This long suction port provides increased air intake which results in improved suction efficiency and higher torque generation. The surge tank and one-way valve are provided. When engine is running at high speed, the ECM sends the signal to the VIAS control solenoid valve. This signal introduces the intake manifold vacuum into the power valve actuator and therefore opens the power valve to two suction passages together in the collector. Under this condition, the effective port length is equivalent to the length of the suction port provided independently for each cylinder. This shortened port length results in enhanced engine output with reduced suction resistance under high speeds. COMPONENT DESCRIPTION Power Valve The power valve is installed in intake manifold collector and used to control the suction passage of the variable induction air control system. It is set in the fully closed or fully opened position by the power valve actuator (1) operated by the vacuum stored in the surge tank. The vacuum in the surge tank is controlled by the VIAS control solenoid valve (2). ● : Vehicle front BBIA0649E Revision: July 2006 EC-717 2006 Quest K L M VIAS VIAS Control Solenoid Valve The VIAS control solenoid valve (2) cuts the intake manifold vacuum signal for power valve control. It responds to ON/OFF signals from the ECM. When the solenoid is off, the vacuum signal from the intake manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and feeds the vacuum signal to the power valve actuator (1). ● : Vehicle front BBIA0649E CONSULT-II Reference Value in Data Monitor Mode EBS00RB0 Specification data are reference values. MONITOR ITEM VIAS S/V Revision: July 2006 CONDITION ● Engine: After warming up SPECIFICATION 1,800 - 3,600 rpm ON Except above conditions OFF EC-718 2006 Quest VIAS Wiring Diagram EBS00RB1 A EC C D E F G H I J K L M BBWA1645E Revision: July 2006 EC-719 2006 Quest VIAS Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. TERMINAL NO. WIRE COLOR ITEM CONDITION [Engine is running] ● 29 Y/G VIAS control solenoid valve Idle speed Engine speed is between 1,800 and 3,600 rpm. [Engine is running] [Ignition switch: OFF] ● W/B ECM relay (Self shut-off) For a few seconds after turning ignition switch OFF [Ignition switch: OFF] ● 119 120 R/G R/G Power supply for ECM Revision: July 2006 BATTERY VOLTAGE (11 - 14V) [Engine is running] ● 111 DATA (DC Voltage) More than a few seconds passed after turning ignition switch OFF [Ignition switch: ON] EC-720 0 - 1.0V 0 - 1.5V BATTERY VOLTAGE (11 - 14V) BATTERY VOLTAGE (11 - 14V) 2006 Quest VIAS Diagnostic Procedure EBS00RB2 1. CHECK OVERALL FUNCTION 1. 2. 3. A With CONSULT-II EC Start engine and warm it up to normal operating temperature. Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode with CONSULT-II. Turn VIAS control solenoid valve ON and OFF, and make sure that power valve actuator rod moves as C shown in the figure. NOTE: Use an inspection mirror (A) to confirm the operation of power valve actuator rod. D E F G PBIB3050E : Vehicle front 1. Power valve actuator H Without CONSULT-II Start engine and warm it up to normal operating temperature. Rev engine quickly up to above 5,000 rpm and make sure that power valve actuator rod moves as shown in the figure. NOTE: Use an inspection mirror (A) to confirm the operation of power valve actuator rod. OK or NG OK >> INSPECTION END NG (With CONSULT-II) >>GO TO 2. NG (Without CONSULT-II) >>GO TO 3. 1. 2. I J K PBIB3053E L M Revision: July 2006 EC-721 2006 Quest VIAS 2. CHECK VACUUM EXISTENCE 1. 2. 3. 4. 5. With CONSULT-II Stop engine and disconnect vacuum hose connected to power valve actuator (1). Install the vacuum gauge (2) as shown in the figure. Start engine and let it idle. Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode with CONSULT-II. Turn VIAS control solenoid valve ON and OFF, and check vacuum existence under the following conditions. PBIB3051E : Vehicle front VIAS SOL VALVE 3. VIAS control solenoid valve Vacuum ON Should exist. OFF Should not exist. OK or NG OK >> Repair or replace power valve actuator. NG >> GO TO 4. Revision: July 2006 EC-722 2006 Quest VIAS 3. CHECK VACUUM EXISTENCE 1. 2. 3. 4. 5. A Without CONSULT-II Stop engine and disconnect vacuum hose connected to power valve actuator (1). Install the vacuum gauge (2) as shown in the figure. Disconnect VIAS control solenoid valve harness connector. Start engine and let it idle. Apply 12V of direct current between VIAS control solenoid valve (3) terminals 1 and 2. EC C D E F PBIB3052E : 6. G Vehicle front Check vacuum existence under the following conditions. Condition Vacuum 12V direct current supply Should exist. No supply H Should not exist. I OK or NG OK >> Repair or replace power valve actuator. NG >> GO TO 4. J 4. CHECK VACUUM HOSE K 1. 2. Stop engine. Check hoses and tubes between intake manifold and power valve actuator for crack, clogging, improper connection or disconnection. Refer to EC-109, "Vacuum Hose Drawing" . OK or NG OK >> GO TO 5. NG >> Repair hoses or tubes. L M SEF109L 5. CHECK VACUUM TANK Refer to EC-725, "Component Inspection" . OK or NG OK >> GO TO 6. NG >> Replace vacuum tank. Revision: July 2006 EC-723 2006 Quest VIAS 6. CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT 1. 2. 3. Turn ignition switch OFF. Disconnect VIAS control solenoid valve (2) harness connector. Turn ignition switch ON. – : Vehicle front 1: Power valve actuator – BBIA0649E 4. Check voltage between terminal 1 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK >> GO TO 8. NG >> GO TO 7. PBIB0173E 7. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 ● IPDM E/R connector E122 ● Harness for open or short between VIAS control solenoid valve and IPDM E/R ● Harness for open or short between VIAS control solenoid valve and ECM ● >> Repair harness or connectors. 8. CHECK VIAS CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. 2. 3. Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 29 and VIAS control solenoid valve terminal 2. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK VIAS CONTROL SOLENOID VALVE Refer to EC-725, "Component Inspection" . OK or NG OK >> GO TO 10. NG >> Replace VIAS control solenoid valve. Revision: July 2006 EC-724 2006 Quest VIAS 10. CHECK INTERMITTENT INCIDENT A Refer to EC-152, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . EC >> INSPECTION END Component Inspection EBS00RB3 VIAS CONTROL SOLENOID VALVE With CONSULT-II 1. 2. 3. 4. C Reconnect harness connectors disconnected. Turn ignition switch ON. Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode. Check air passage continuity and operation delay time under the following conditions. Condition VIAS SOL VALVE Air passage continuity between A and B Air passage continuity between A and C ON Yes No OFF No Yes D E F Operation takes less than 1 second. G PBIB2505E H Without CONSULT-II Check air passage continuity and operation delay time under the following conditions. Condition Air passage continuity between A and B Air passage continuity between A and C 12V direct current supply between terminals 1 and 2 Yes No No supply No Yes I J K Operation takes less than 1 second. PBIB2532E VACUUM TANK L 1. 2. 3. M Disconnect vacuum hose connected to vacuum tank. Connect a vacuum pump to the center port of vacuum tank. Apply vacuum and make sure that vacuum exists at the other port. PBIB0846E Removal and Installation EBS00RB4 VIAS CONTROL SOLENOID VALVE Refer to EM-23, "INTAKE MANIFOLD" . Revision: July 2006 EC-725 2006 Quest MIL AND DATA LINK CONNECTOR MIL AND DATA LINK CONNECTOR Wiring Diagram PFP:24814 EBS00RB5 BBWA2010E Revision: July 2006 EC-726 2006 Quest MIL AND DATA LINK CONNECTOR A EC C D E F G H I J K L M BBWA1653E Revision: July 2006 EC-727 2006 Quest SERVICE DATA AND SPECIFICATIONS (SDS) SERVICE DATA AND SPECIFICATIONS (SDS) Fuel Pressure Fuel pressure at idling kPa (kg/cm2 , psi) PFP:00030 EBS00RB6 Approximately 350 (3.57, 51) Idle Speed and Ignition Timing EBS00RB7 4-speed A/T: 700 ± 50 rpm 5-speed A/T: 675 ± 50 rpm Target idle speed No load* (in P or N position) Air conditioner: ON In P or N position 825 rpm or more Ignition timing In P or N position 15° ± 5° BTDC *: Under the following conditions: ● Air conditioner switch: OFF ● Electric load: OFF (Lights, heater fan & rear window defogger) ● Steering wheel: Kept in straight-ahead position Calculated Load Value EBS00RB8 Conditions Calculated load value % (Using CONSULT-II or GST) At idle 5 - 35 At 2,500 rpm 5 - 35 Mass Air Flow Sensor EBS00RB9 Supply voltage Battery voltage (11 - 14V) Output voltage at idle 1.0 - 1.3*V 2.0 - 6.0 g·m/sec at idle* 7.0 - 20.0 g·m/sec at 2,500 rpm* Mass air flow (Using CONSULT-II or GST) *: Engine is warmed up to normal operating temperature and running under no load. Intake Air Temperature Sensor EBS00RBA Temperature °C (°F) Resistance kΩ 25 (77) 1.800 - 2.200 80 (176) 0.283 - 0.359 Engine Coolant Temperature Sensor Temperature °C (°F) EBS00RBB Resistance kΩ 20 (68) 2.1 - 2.9 50 (122) 0.68 - 1.00 90 (194) 0.236 - 0.260 EGR Temperature Sensor EBS00RBC Temperature °C (°F) Resistance kΩ 0 (32) 0.73 - 0.88 50 (122) 0.074 - 0.082 100 (212) 0.011 - 0.014 Air Fuel Ratio (A/F) Sensor 1 Heater EBS00RBD Resistance [at 25°C (77°F)] 2.3 - 4.3Ω Heated Oxygen sensor 2 Heater EBS00RBE Resistance [at 25°C (77°F)] Revision: July 2006 5.0 - 7.0Ω EC-728 2006 Quest SERVICE DATA AND SPECIFICATIONS (SDS) Crankshaft Position Sensor (POS) EBS00RBF A Refer to EC-395, "Component Inspection" . Camshaft Position Sensor (PHASE) EBS00RBG EC Refer to EC-405, "Component Inspection" . Throttle Control Motor EBS00RBH Resistance [at 25°C (77°F)] C Approximately 1 - 15Ω Fuel Injector EBS00RBI Resistance [at 10 - 60°C (50 - 140°F)] D 11.1 - 14.5Ω Fuel Pump EBS00RBJ Resistance [at 25°C (77°F)] E Approximately 0.2 - 5.0Ω F G H I J K L M Revision: July 2006 EC-729 2006 Quest SERVICE DATA AND SPECIFICATIONS (SDS) Revision: July 2006 EC-730 2006 Quest
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