CVT
User Manual: cvt
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CVT C TRANSMISSION/TRANSAXLE SECTION CVT CVT A B CVT D E CONTENTS INDEX FOR DTC ........................................................ 6 Alphabetical Index .................................................... 6 DTC No. Index ......................................................... 7 PRECAUTIONS .......................................................... 8 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” .................................................................. 8 Precautions for TCM and CVT Assembly Replacement ......................................................................... 8 EEPROM ERASING PATTERNS .......................... 8 METHOD FOR ERASING THE EEPROM IN THE TCM ...................................................................... 8 METHOD FOR WRITING DATA FROM THE ROM ASSEMBLY IN THE TRANSMISSION ........ 9 CHECK METHOD ................................................. 9 Removal and Installation Procedure for CVT Unit Connector ................................................................. 9 REMOVAL ............................................................. 9 INSTALLATION ..................................................... 9 Precautions ............................................................ 10 Service Notice or Precautions .................................11 OBD-II SELF-DIAGNOSIS ...................................11 Wiring Diagrams and Trouble Diagnosis .................11 PREPARATION ......................................................... 12 Special Service Tools ............................................. 12 Commercial Service Tools ...................................... 13 CVT FLUID ............................................................... 14 Checking CVT Fluid ............................................... 14 FLUID LEVEL CHECK ........................................ 14 FLUID CONDITION CHECK ............................... 15 Changing CVT Fluid ............................................... 15 CVT SYSTEM ........................................................... 16 Cross-Sectional View - RE0F09A .......................... 16 Control System ....................................................... 17 Hydraulic Control System ....................................... 18 TCM Function ......................................................... 19 CONTROL SYSTEM OUTLINE .......................... 19 CONTROL SYSTEM DIAGRAM ......................... 19 CAN Communication Unit For 2WD Models .......... 20 SYSTEM DESCRIPTION .................................... 20 Revision; 2004 April TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE 6/TYPE 7/TYPE 8 ................................................ 20 TYPE 9/TYPE10/TYPE 11/TYPE 12/TYPE 13/ TYPE 14/TYPE 15/TYPE 16 ............................... 25 CAN Communication Unit For AWD Models .......... 30 SYSTEM DESCRIPTION .................................... 30 TYPE 17/TYPE 18/TYPE 19/TYPE 20/TYPE 21/ TYPE 22/TYPE 23/TYPE 24 ............................... 30 TYPE 25/TYPE26/TYPE 27/TYPE 28/TYPE 29/ TYPE 30/TYPE 31/TYPE 32 ............................... 35 Input/Output Signal of TCM .................................... 40 Line Pressure and Secondary Pressure Control ... 40 NORMAL CONTROL .......................................... 41 FEEDBACK CONTROL ...................................... 41 Shift Control ............................................................ 41 “D” POSITION ..................................................... 41 “S”POSITION ...................................................... 41 “L” POSITION ...................................................... 42 DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BRAKE CONTROL) .............................. 42 KICKDOWN CONTROL ...................................... 42 Lock-Up and Select Control .................................... 42 TORQUE CONVERTER CLUTCH AND SELECT CONTROL VALVE CONTROL ............................ 43 Control Valve .......................................................... 44 FUNCTION OF CONTROL VALVE ..................... 44 ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 45 Introduction ............................................................. 45 OBD-II Function for CVT System ........................... 45 One or Two Trip Detection Logic of OBD-II ............ 45 ONE TRIP DETECTION LOGIC ......................... 45 TWO TRIP DETECTION LOGIC ......................... 45 OBD-II Diagnostic Trouble Code (DTC) ................. 45 HOW TO READ DTC AND 1ST TRIP DTC ......... 45 HOW TO ERASE DTC ........................................ 46 HOW TO ERASE DTC (WITH CONSULT-II) ....... 47 HOW TO ERASE DTC (WITH GST) ................... 47 Malfunction Indicator Lamp (MIL) ........................... 48 DESCRIPTION .................................................... 48 TROUBLE DIAGNOSIS ............................................ 49 CVT-1 2003 Murano F G H I J K L M DTC Inspection Priority Chart ................................. 49 Fail-Safe ................................................................. 49 FAIL-SAFE FUNCTION ....................................... 49 How To Perform Trouble Diagnosis For Quick and Accurate Repair ...................................................... 50 INTRODUCTION ................................................. 50 WORK FLOW ...................................................... 51 DIAGNOSTIC WORKSHEET .............................. 52 CVT Electrical Parts Location ................................. 54 Circuit Diagram ....................................................... 55 Inspections Before Trouble Diagnosis .................... 56 CVT FLUID CHECK ............................................ 56 STALL TEST ........................................................ 56 LINE PRESSURE TEST ...................................... 57 ROAD TEST ........................................................ 59 Vehicle Speed When Shifting Gears ...................... 62 TCM Input/Output Signal Reference Values ........... 63 TCM TERMINAL CONNECTOR LAYOUT .......... 63 TCM INSPECTION TABLE .................................. 63 CONSULT-II ............................................................ 66 FUNCTION .......................................................... 66 WORK SUPPORT MODE WITH CONSULT-II ... 66 SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II) ....................................................... 70 Diagnostic Procedure Without CONSULT-II ........... 75 OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST) ......................................................... 75 DTC U1000 CAN COMMUNICATION LINE .............. 76 Description .............................................................. 76 On Board Diagnosis Logic ...................................... 76 Possible Cause ....................................................... 76 DTC Confirmation Procedure ................................. 76 WITH CONSULT-II .............................................. 76 WITH GST ........................................................... 76 Wiring Diagram — CVT — CAN ............................. 77 Diagnostic Procedure ............................................. 78 DTC P0615 START SIGNAL CIRCUIT ..................... 79 Description .............................................................. 79 On Board Diagnosis Logic ...................................... 79 Possible Cause ....................................................... 79 DTC Confirmation Procedure ................................. 79 WITH CONSULT-II .............................................. 79 Wiring Diagram — CVT — STSIG .......................... 80 Diagnostic Procedure ............................................. 81 DTC P0703 STOP LAMP SWITCH CIRCUIT ........... 83 Description .............................................................. 83 On Board Diagnosis Logic ...................................... 83 Possible Cause ....................................................... 83 DTC Confirmation Procedure ................................. 83 WITH CONSULT-II .............................................. 83 Diagnostic Procedure ............................................. 83 DTC P0705 PARK/NEUTRAL POSITION SWITCH... 85 Description .............................................................. 85 On Board Diagnosis Logic ...................................... 85 Possible Cause ....................................................... 85 DTC Confirmation Procedure ................................. 85 WITH CONSULT-II .............................................. 85 WITH GST ........................................................... 85 Wiring Diagram — CVT — PNP/SW ...................... 86 Revision; 2004 April Diagnostic Procedure ..............................................87 Component Inspection ............................................89 PNP SWITCH ......................................................89 DTC P0710 CVT FLUID TEMPERATURE SENSOR CIRCUIT ....................................................................90 Description ..............................................................90 CONSULT-II Reference Value .................................90 On Board Diagnosis Logic ......................................90 Possible Cause .......................................................90 DTC Confirmation Procedure ..................................90 WITH CONSULT-II ...............................................90 WITH GST ...........................................................90 Wiring Diagram - CVT - FTS ...................................91 Diagnostic Procedure ..............................................92 Component Inspection ............................................94 CVT FLUID TEMPERATURE SENSOR ..............94 DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) .....................................................95 Description ..............................................................95 CONSULT-II Reference Value .................................95 On Board Diagnosis Logic ......................................95 Possible Cause .......................................................95 DTC Confirmation Procedure ..................................95 WITH CONSULT-II ...............................................95 WITH GST ...........................................................96 Wiring Diagram - CVT - PRSCVT ...........................97 Diagnostic Procedure ..............................................98 DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) ................................... 101 Description ............................................................ 101 CONSULT-II Reference Value ............................... 101 On Board Diagnosis Logic .................................... 101 Possible Cause ..................................................... 101 DTC Confirmation Procedure ................................ 101 WITH CONSULT-II ............................................. 101 WITH GST ......................................................... 102 Wiring Diagram - CVT - SESCVT ......................... 103 Diagnostic Procedure ............................................ 104 DTC P0725 ENGINE SPEED SIGNAL .................... 108 Description ............................................................ 108 On Board Diagnosis Logic .................................... 108 Possible Cause ..................................................... 108 DTC Confirmation Procedure ................................ 108 WITH CONSULT-II ............................................. 108 Diagnostic Procedure ............................................ 108 DTC P0730 BELT DAMAGE ................................... 110 Description ............................................................ 110 CONSULT-II Reference Value ............................... 110 On Board Diagnosis Logic .................................... 110 Possible Cause ..................................................... 110 DTC Confirmation Procedure ................................ 110 WITH CONSULT-II ............................................. 110 Diagnostic Procedure ............................................ 111 DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE .................................................. 112 Description ............................................................ 112 CONSULT-II Reference Value ............................... 112 On Board Diagnosis Logic .................................... 112 Possible Cause ..................................................... 112 CVT-2 2003 Murano DTC Confirmation Procedure ................................112 WITH CONSULT-II .............................................112 WITH GST ..........................................................112 Wiring Diagram - CVT - TCV .................................113 Diagnostic Procedure ............................................114 Component Inspection ..........................................116 TORQUE CONVERTER CLUTCH SOLENOID VALVE ................................................................116 DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)..117 Description ............................................................117 CONSULT-II Reference Value ...............................117 On Board Diagnosis Logic ....................................117 Possible Cause .....................................................117 DTC Confirmation Procedure ................................117 WITH CONSULT-II .............................................117 WITH GST ..........................................................117 Diagnostic Procedure ............................................118 DTC P0745 LINE PRESSURE SOLENOID VALVE. 120 Description ........................................................... 120 CONSULT-II Reference Value .............................. 120 On Board Diagnosis Logic ................................... 120 Possible Cause .................................................... 120 DTC Confirmation Procedure ............................... 120 WITH CONSULT-II ............................................ 120 WITH GST ......................................................... 120 Wiring Diagram — CVT — LPSV ......................... 121 Diagnostic Procedure ........................................... 122 Component Inspection ......................................... 124 PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE) ........... 124 DTC P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE SOLENOID VALVE) .................................................................... 125 Description ........................................................... 125 On Board Diagnosis Logic ................................... 125 Possible Cause .................................................... 125 DTC Confirmation Procedure ............................... 125 WITH CONSULT-II ............................................ 125 WITH GST ......................................................... 125 Diagnostic Procedure ........................................... 126 DTC P0776 PRESSURE CONTROL SOLENOID B PERFOMANCE (SEC PRESSURE SOLENOID VALVE) .................................................................... 128 Description ........................................................... 128 CONSULT-II Reference Value .............................. 128 On Board Diagnosis Logic ................................... 128 Possible Cause .................................................... 128 DTC Confirmation Procedure ............................... 128 WITH CONSULT-II ............................................ 128 WITH GST ......................................................... 129 Diagnostic Procedure ........................................... 129 DTC P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE SOLENOID VALVE) .................................................................... 131 Description ........................................................... 131 CONSULT-II Reference Value .............................. 131 On Board Diagnosis Logic ................................... 131 Possible Cause .................................................... 131 DTC Confirmation Procedure ............................... 131 Revision; 2004 April WITH CONSULT-II ............................................ 131 WITH GST ......................................................... 131 Wiring Diagram — CVT — SECPSV .................... 132 Diagnostic Procedure ........................................... 133 Component Inspection .......................................... 134 PRESSURE CONTROL SORENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE) . 134 DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR). 135 Description ............................................................ 135 CONSULT-II Reference Value .............................. 135 On Board Diagnosis Logic .................................... 135 Possible Cause ..................................................... 135 DTC Confirmation Procedure ............................... 135 WITH CONSULT-II ............................................ 135 WITH GST ......................................................... 135 Wiring Diagram - CVT - SECPS ........................... 136 Diagnostic Procedure ........................................... 137 DTC P0841 PRESSURE SENSOR FUNCTION ..... 140 Description ............................................................ 140 CONSULT-II Reference Value .............................. 140 On Board Diagnosis Logic .................................... 140 Possible Cause ..................................................... 140 DTC Confirmation Procedure ............................... 140 WITH CONSULT-II ............................................ 140 Diagnostic Procedure ........................................... 141 DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR). 143 Description ............................................................ 143 CONSULT-II Reference Value .............................. 143 On Board Diagnosis Logic .................................... 143 Possible Cause ..................................................... 143 DTC Confirmation Procedure ............................... 143 WITH CONSULT-II ............................................ 143 WITH GST ......................................................... 143 Wiring Diagram - CVT - PRIPS ............................ 144 Diagnostic Procedure ........................................... 145 DTC P0868 SECONDARY PRESSURE DOWN ..... 147 Description ............................................................ 147 CONSULT-II Reference Value .............................. 147 On Board Diagnosis Logic .................................... 147 Possible Cause ..................................................... 147 DTC Confirmation Procedure ............................... 147 WITH CONSULT-II ............................................ 147 Diagnostic Procedure ........................................... 148 DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY) .................................................. 150 Description ............................................................ 150 On Board Diagnosis Logic .................................... 150 Possible Cause ..................................................... 150 DTC Confirmation Procedure ............................... 150 WITH CONSULT-II ............................................ 150 Wiring Diagram — CVT — POWER ..................... 151 Diagnostic Procedure ........................................... 152 DTC P1705 THROTTLE POSITION SENSOR ....... 155 Description ............................................................ 155 On Board Diagnosis Logic .................................... 155 Possible Cause ..................................................... 155 CVT-3 2003 Murano A B CVT D E F G H I J K L M DTC Confirmation Procedure ............................... 155 WITH CONSULT-II ............................................ 155 Diagnostic Procedure ........................................... 155 DTC P1722 ESTM VEHICLE SPEED SIGNAL ....... 157 Description ............................................................ 157 On Board Diagnosis Logic .................................... 157 Possible Cause ..................................................... 157 DTC Confirmation Procedure ............................... 157 WITH CONSULT-II ............................................ 157 Diagnostic Procedure ........................................... 157 DTC P1723 CVT SPEED SENSOR FUNCTION ..... 159 Description ............................................................ 159 On Board Diagnosis Logic .................................... 159 Possible Cause ..................................................... 159 DTC Confirmation Procedure ............................... 159 WITH CONSULT-II ............................................ 159 Diagnostic Procedure ........................................... 160 DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM .................................................................. 161 Description ............................................................ 161 On Board Diagnosis Logic .................................... 161 Possible Cause ..................................................... 161 DTC Confirmation Procedure ............................... 161 WITH CONSULT-II ............................................ 161 Diagnostic Procedure ........................................... 161 DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT .................................................................. 163 Description ............................................................ 163 CONSULT-II Reference Value .............................. 163 On Board Diagnosis Logic .................................... 163 Possible Cause ..................................................... 163 DTC Confirmation Procedure ............................... 163 WITH CONSULT-II ............................................ 163 WITH GST ......................................................... 163 Wiring Diagram - CVT - L/USSV ........................... 164 Diagnostic Procedure ........................................... 165 Component Inspection .......................................... 166 LOCK-UP SELECT SOLENOID VALVE ............ 166 DTC P1745 LINE PRESSURE CONTROL ............. 167 Description ............................................................ 167 On Board Diagnosis Logic .................................... 167 Possible Cause ..................................................... 167 DTC Confirmation Procedure ............................... 167 WITH CONSULT-II ............................................ 167 Diagnostic Procedure ........................................... 167 DTC P1777 STEP MOTOR - CIRCUIT ................... 168 Description ............................................................ 168 CONSULT-II Reference Value .............................. 168 On Board Diagnosis Logic .................................... 168 Possible Cause ..................................................... 168 DTC Confirmation Procedure ............................... 168 WITH CONSULT-II ............................................ 168 WITH GST ......................................................... 169 Wiring Diagram — CVT — STM ........................... 170 Diagnostic Procedure ........................................... 171 Component Inspection .......................................... 172 STEP MOTOR ................................................... 172 DTC P1778 STEP MOTOR - FUNCTION ............... 173 Description ............................................................ 173 Revision; 2004 April CONSULT-II Reference Value ............................... 173 On Board Diagnosis Logic .................................... 173 Possible Cause ..................................................... 173 DTC Confirmation Procedure ................................ 173 WITH CONSULT-II ............................................. 173 WITH GST ......................................................... 174 Diagnostic Procedure ............................................ 174 SECOND POSITION SWITCH ................................ 175 Description ............................................................ 175 CONSULT-II Reference Value ............................... 175 Possible Cause ..................................................... 175 Wiring Diagram — CVT — SPSW ........................ 176 Diagnostic Procedure ............................................ 177 Component Inspection .......................................... 177 SECOND POSITION SWITCH .......................... 177 TROUBLE DIAGNOSIS FOR SYMPTOMS ............ 178 Wiring Diagram — CVT — NONDTC ................... 178 SHIFT CONTROL SYSTEM .................................... 182 Control Device Removal and Installation .............. 182 REMOVAL .......................................................... 183 INSTALLATION .................................................. 183 Adjustment of CVT Position .................................. 183 Checking of CVT Position ..................................... 183 CVT SHIFT LOCK SYSTEM ................................... 184 Description ............................................................ 184 Shift Lock System Electrical Parts Location .......... 184 Wiring Diagram — CVT — SHIFT ........................ 185 Shift Lock Control Unit Reference Values ............. 187 SHIFT LOCK HARNESS CONNECTOR TERMINALS LAYOUT .................................................. 187 SHIFT LOCK CONTROL UNIT INSPECTION TABLE ................................................................ 187 Component Inspection .......................................... 188 SHIFT LOCK SOLENOID .................................. 188 DETENTION SWITCH ....................................... 188 DETENTION SWITCH ....................................... 188 KEY LOCK SOLENOID ..................................... 188 KEY SWITCH ..................................................... 189 STOP LAMP SWITCH ....................................... 189 AIR BREATHER HOSE ........................................... 190 Removal and Installation ....................................... 190 DIFFERENTIAL SIDE OIL SEAL ............................ 191 Removal and Installation ....................................... 191 REMOVAL .......................................................... 191 INSTALLATION .................................................. 192 CVT FLUID COOLER VALVE ................................. 193 Removal and Installation ....................................... 193 COMPONENTS ................................................. 193 REMOVAL .......................................................... 194 INSTALLATION .................................................. 196 Component Inspection .......................................... 196 TRANSAXLE ASSEMBLY ...................................... 197 Removal and Installation ....................................... 197 COMPONENTS (2WD MODELS) ...................... 197 COMPONENTS (AWD MODELS) ..................... 199 REMOVAL .......................................................... 201 INSPECTION ..................................................... 203 INSTALLATION .................................................. 203 SERVICE DATA AND SPECIFICATIONS (SDS) .... 206 CVT-4 2003 Murano General Specifications ......................................... 206 Stall Speed ........................................................... 206 Line Pressure ....................................................... 206 Solenoid Valves .................................................... 206 CVT Fluid Temperature Sensor ............................ 206 Primary Speed Sensor ......................................... 206 Secondary Speed Sensor ..................................... 207 Removal and Installation ...................................... 207 A B CVT D E F G H I J K L M Revision; 2004 April CVT-5 2003 Murano INDEX FOR DTC INDEX FOR DTC Alphabetical Index PFP:00024 ACS001S6 NOTE: If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to CVT-76 . DTC Items (CONSULT-II screen terms) OBD-II Except OBD-II CONSULT-II GST*1 CONSULT-II only “TRANSMISSION” A/T TCC S/V FNCTN P0744 P0744 CVT-117 ATF TEMP SEN/CIRC P0710 P0710 CVT-90 BELT DAMG — P0730 CVT-110 BRAKE SW/CIRC — P0703 CVT-83 CAN COMM CIRCUIT U1000 U1000 CVT-76 CVT SPD SEN/FNCTN — P1723 CVT-159 Reference page ENGINE SPEED SIG — P0725 CVT-108 ELEC TH CONTROL — P1726 CVT-161 ESTM VEH SPD SIG — P1722 CVT-157 P0715 P0715 CVT-95 L/PRESS CONTROL — P1745 CVT-167 L/PRESS SOL/CIRC P0745 P0745 CVT-120 PRS CNT SOL/A FCTN (L/PRESS SOL/FNCTN)*2 P0746 P0746 CVT-125 LU-SLCT SOL/CIRC P1740 P1740 CVT-163 PNP SW/CIRC P0705 P0705 CVT-85 — P0841 CVT-140 P0845 P0845 CVT-143 — P0868 CVT-147 PRS CNT SOL/B CIRC (SEC/PRESS SOL/CIRC)*2 P0778 P0778 CVT-131 PRS CNT SOL/B FCTN (SEC/PRESS SOL/FNCTN)*2 P0776 P0776 CVT-128 TR PRS SENS/A CIRC (SEC PRS SEN/CIRC)*2 P0840 P0840 CVT-135 INPUT SPD SEN/CIRC (IN PY SPD SEN/CIRC)*2 PRESS SEN/FNCTN TR PRS SENS/B CIRC (PRI PRS SEN/CIRC)*2 SEC/PRESS DOWN STARTER RELAY/CIRC — P0615 CVT-79 STEP MOTOR/CIRC P1777 P1777 CVT-168 STEP MOTOR/FNCTN P1778 P1778 CVT-173 TCC SOLENOID/CIRC P0740 P0740 CVT-112 TCM-POWER SUPPLY — P1701 CVT-150 TP SEN/CIRC A/T — P1705 CVT-155 P0720 P0720 CVT-101 VEH SPD SEN/CIR AT *1: These numbers are prescribed by SAE J2012. *2: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. Revision; 2004 April CVT-6 2003 Murano INDEX FOR DTC DTC No. Index ACS001S7 NOTE: If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to CVT-76 . B DTC OBD-II Except OBD-II CONSULT-II GST*1 CONSULT-II only “TRANSMISSION” — P0615 STARTER RELAY/CIRC CVT-79 — P0703 BRAKE SW/CIRC CVT-83 P0705 P0705 PNP SW/CIRC CVT-85 P0710 P0710 ATF TEMP SEN/CIRC CVT-90 P0715 P0715 INPUT SPD SEN/CIRC (IN PY SPD SEN/CIRC)*2 CVT-95 P0720 P0720 VEH SPD SEN/CIR AT CVT-101 — P0725 ENGINE SPEED SIG CVT-108 — P0730 BELT DAMG CVT-110 P0740 P0740 TCC SOLENOID/CIRC CVT-112 P0744 P0744 A/T TCC S/V FNCTN CVT-117 P0745 P0745 L/PRESS SOL/CIRC CVT-120 P0746 P0746 PRS CNT SOL/A FCTN (L/PRESS SOL/FNCTN)*2 CVT-125 P0776 P0776 PRS CNT SOL/B FCTN (SEC/PRESS SOL/FNCTN)*2 CVT-128 P0778 P0778 PRS CNT SOL/B CIRC (SEC/PRESS SOL/CIRC)*2 CVT-131 P0840 P0840 TR PRS SENS/A CIRC (SEC PRS SEN/CIRC)*2 CVT-135 Items (CONSULT-II screen terms) Reference page CVT — P0841 PRESS SEN/FNCTN CVT-140 P0845 P0845 TR PRS SENS/B CIRC (PRI PRS SEN/CIRC)*2 CVT-143 — P0868 SEC/PRESS DOWN CVT-147 — P1701 TCM-POWER SUPPLY CVT-150 — P1705 TP SEN/CIRC A/T CVT-155 — P1722 ESTM VEH SPD SIG CVT-157 — P1723 CVT SPD SEN/FNCTN CVT-159 — P1726 ELEC TH CONTROL CVT-161 P1740 P1740 LU-SLCT SOL/CIRC CVT-163 — P1745 L/PRESS CONTROL CVT-167 P1777 P1777 STEP MOTOR/CIRC CVT-168 P1778 P1778 STEP MOTOR/FNCTN CVT-173 U1000 U1000 CAN COMM CIRCUIT CVT-76 *1: These numbers are prescribed by SAE J2012. *2: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. Revision; 2004 April A CVT-7 2003 Murano D E F G H I J K L M PRECAUTIONS PRECAUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” ACS003KX 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. Precautions for TCM and CVT Assembly Replacement ACS001SA CAUTION: ● Check if new data (Unit ID) are entered correctly after replacing CVT assembly and erasing data in TCM. (Connect CONSULT-II, and then turn ignition switch OFF.) ● When replacing CVT assembly or TCM, refer to the pattern table below and erase the EEPROM in the TCM if necessary. EEPROM ERASING PATTERNS CVT assembly TCM Erasing EEPROM in TCM Replaced Replaced Not required Not required because the EEPROM in the TCM is in the default state. (CVT assembly must be replaced first.) Not replaced Replaced Not required Not required because the EEPROM in the TCM is in the default state. Required Required because data has been written in the EEPROM in the TCM and because the TCM cannot write data from the ROM assembly in the transmission. Replaced Not replaced Remarks METHOD FOR ERASING THE EEPROM IN THE TCM 1. 2. 3. 4. 5. 6. 7. Connect CONSULT-II to data link connector. Turn ignition switch “ON”. Confirm that CONSULT-II is turned “ON”. Move selector lever to “R” position. Touch “START” on CONSULT-II. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-II. Brake switch “ON”. Press the accelerator pedal (0.5/8 - 4/8 throttle) not to exceed the half, and hold it in the half or less open position. (This will set the closed throttle position signal to “OFF” and the wide open throttle position signal to “OFF”.) 8. Touch “ERASE” on CONSULT-II, and then touch “YES”. 9. Wait 3 seconds and then release the accelerator pedal. 10. Turn ignition switch “OFF”. Revision; 2004 April CVT-8 2003 Murano PRECAUTIONS METHOD FOR WRITING DATA FROM THE ROM ASSEMBLY IN THE TRANSMISSION In the following procedure, the TCM reads data from the ROM assembly and writes it to the EEPROM in the TCM. 1. With the EEPROM in the TCM erased. 2. Move selector lever to “P” position. 3. Turn ignition switch “ON”. CHECK METHOD ● ● A B CVT Normal: About 2 seconds after the ignition is switched to “ON” position, the CVT indicator lamp lights up for 2 seconds. Non-standard: Even after the ignition is switched to “ON” position, the CVT indicator lamp does not light up after 2 seconds or illuminates immediately. CAUTION: Perform in the P or N position. D E Cope for non-standard ● ● Replace the CVT assembly. Replace the TCM. F Removal and Installation Procedure for CVT Unit Connector ACS003L1 REMOVAL ● G Rotate bayonet ring counterclockwise, pull out CVT unit harness connector upward and remove it. H I J SCIA2096E INSTALLATION 1. Align ∆ marking on CVT unit harness connector terminal body with ❏ marking on bayonet ring, insert CVT unit harness connector, and then rotate bayonet ring clockwise. K L M SCIA2097E 2. Rotate bayonet ring clockwise until ∆ marking on CVT unit harness connector terminal body is aligned with the slit on bayonet ring as shown in the figure (correctly fitting condition), install CVT unit harness connector to CVT unit harness connector terminal body. SCIA2098E Revision; 2004 April CVT-9 2003 Murano PRECAUTIONS CAUTION: ● Securely align ∆ marking on CVT unit harness connector terminal body with bayonet ring slit. Then, be careful not to make a half fit condition as shown in the figure. ● Do not mistake the slit of bayonet ring for other dent portion. SCIA2099E Precautions ACS001SB NOTE: If any malfunctions occur in the RE0F09A model transaxle, replace the entire transaxle assembly. ● Before connecting or disconnecting the TCM harness connector, turn ignition switch “OFF” and disconnect negative battery cable. Because battery voltage is applied to TCM even if ignition switch is turned “OFF”. SEF289H ● When connecting or disconnecting pin connectors into or from TCM, take care not to damage pin terminals (bend or break). When connecting pin connectors make sure that there are not any bends or breaks on TCM pin terminal. SEF291H ● Before replacing TCM, perform TCM input/output signal inspection and make sure whether TCM functions properly or not. CVT-63, "TCM INSPECTION TABLE". MEF040DA Revision; 2004 April CVT-10 2003 Murano PRECAUTIONS ● After performing each TROUBLE DIAGNOSIS, perform “DTC (Diagnostic Trouble Code) CONFIRMATION PROCEDURE”. If the repair is completed the DTC should not be displayed in the “DTC CONFIRMATION PROCEDURE”. A B CVT SEF217U D ● ● ● Always use the specified brand of CVT fluid. Refer to MA-11, "Fluids and Lubricants" . Use paper rags, not cloth rags, during work. After replacing the CVT fluid, dispose of the waste oil using the methods prescribed by law, ordinance, etc. Service Notice or Precautions E ACS001SC F OBD-II SELF-DIAGNOSIS CVT self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through the blinking pattern of the CVT indicator or the malfunction indicator lamp (MIL). Refer to the table on CVT-71, "Self-Diagnostic Result Test Mode" for the indicator used to display each self-diagnostic result. ● The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memories. Always perform the procedure on CVT-46, "HOW TO ERASE DTC" to complete the repair and avoid unnecessary blinking of the MIL. For details of OBD-II, refer to EC-68, "ON BOARD DIAGNOSTIC (OBD) SYSTEM" . ● Certain systems and components, especially those related to OBD, may use the new style slidelocking type harness connector. For description and how to disconnect, refer to PG-79, "HARNESS CONNECTOR". ● Wiring Diagrams and Trouble Diagnosis G H I J ACS001SD When you read wiring diagrams, refer to the following: ● GI-14, "How to Read Wiring Diagrams". ● PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit. When you perform trouble diagnosis, refer to the following: ● GI-10, "How to Follow Trouble Diagnoses". ● GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident". K L M Revision; 2004 April CVT-11 2003 Murano PREPARATION PREPARATION Special Service Tools PFP:00002 ACS001SE The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Tool number (Kent-Moore No.) Tool name ST2505S001 (J34301-C) Oil pressure gauge set 1 ST25051001 ( — ) Oil pressure gauge 2 ST25052000 ( — ) Hose 3 ST25053000 ( — ) Joint pipe 4 ST25054000 ( — ) Adapter 5 ST25055000 ( — ) Adapter Description Measuring line pressure ZZA0600D KV40100621 (J25273) Drift a: 76 mm (2.99 in) dia. b: 69 mm (2.72 in) dia Installing differential side oil seal ● With AWD models ● Converter housing side (right) NT086 ST33400001 (J26082) Drift a: 60 mm (2.36 in) dia. b: 47 mm (1.85 in) dia. Installing differential side oil seal ● Transaxle case side (left) NT086 ST33400001 (J47005) Drift a: 69.85 mm (2.75 in) dia. b: 49.53 mm (1.95 in) dia. Installing differential side oil seal ● With 2WD models ● Converter housing side (right) SCIA5777E Revision; 2004 April CVT-12 2003 Murano PREPARATION Commercial Service Tools ACS001SF A (Tool number) Tool name Description (31197CA000) Drive plate location guide a: 14 mm (0.55 in) dia. B Installing transaxle assembly CVT SCIA2013E (31093CA000) Slinger Removing and installing transaxle assembly D E F SCIA2014E (31092CA000) Slinger Removing and installing transaxle assembly G H SCIA2015E Power tool Loosening bolts and nuts I J PBIC0190E K L M Revision; 2004 April CVT-13 2003 Murano CVT FLUID CVT FLUID Checking CVT Fluid PFP:KLE50 ACS002KW FLUID LEVEL CHECK Fluid level should be checked with the fluid warmed up to 50 to 80°C (122 to 176°F). The fluid level check procedure is as follows: 1. Check for fluid leakage. 2. With the engine warmed up, drive the vehicle in an urban area. When ambient temperature is 20°C (68°F), it takes about 10 minutes for the CVT fluid to warm up to 50 - 80°C (122 - 176°F). 3. Park the vehicle on a level surface. 4. Apply parking brake firmly. 5. With engine at idle, while depressing brake pedal, move shift selector throughout the entire shift range. SMA146B 6. Pull out the dipstick from the CVT fluid charging pipe after pressing the tab on the dipstick to release the lock. SCIA1933E 7. Wipe fluid off the dipstick and rotate the dipstick attached for 180° to securely insert the dipstick until it meets the end of the CVT fluid charging pipe. CAUTION: Always use paper towels to wipe fluid off the dipstick. SCIA1931E 8. Place the selector lever in P or N and make sure the fluid level is within the specified range. CAUTION: ● When CVT fluid level gauge reinstall, insert CVT fluid charging pipe until CVT fluid level gauge is locking surely. SCIA1932E Revision; 2004 April CVT-14 2003 Murano CVT FLUID FLUID CONDITION CHECK A Fluid status Conceivable Cause Required Operation Varnished (viscous varnish state) Clutch, brake scorched Replace the CVT fluid and check the CVT main unit and the vehicle for malfunctions (wire harnesses, cooler pipes, etc.) Milky white or cloudy Water in the fluid Replace the CVT fluid and check for places where water is getting in. Large amount of metal powder mixed in Unusual wear of sliding parts within CVT Replace the CVT fluid and check for improper operation of the CVT. 3. CVT ATA0022D Changing CVT Fluid 1. 2. B D ACS002KX Warm up CVT fluid by driving the vehicle for 10 minutes. Drain CVT fluid from CVT fluid cooler hose (return side) and refill with new CVT fluid at CVT fluid charging pipe with the engine running at idle speed. Refill until new CVT fluid comes out from CVT fluid cooler hose (return side). About 30 to 50% extra fluid will be required for this procedure. E F Fluid capacity Approx. 10.2 4. G (10-6/8 US qt, 9 lmp qt) CAUTION: ● Use genuine NISSAN CVT fluid NS-2. ● Delete CVT fluid deterioration date with CONSULT-II after changing CVT fluid. Refer to CVT-68, "Check CVT Fluid Deterioration Date" . Check fluid level and condition. H I J K L M Revision; 2004 April CVT-15 2003 Murano CVT SYSTEM CVT SYSTEM Cross-Sectional View - RE0F09A PFP:31036 ACS0020F SCIA4837E 1. Converter housing 2. Oil pump 3. Forward clutch 4. Reverse brake 5. Planetary carrier 6. Primary pulley 7. Steel belt 8. Sun gear 9. Side cover 10. Internal gear 11. Secondary pulley 13. Differential case 14. Idler gear 15. Reduction gear 16. Taper roller bearing 17. Output gear 18. Parking gear 19. Input shaft 20. Torque converter Revision; 2004 April CVT-16 12. Final gear 2003 Murano CVT SYSTEM Control System ACS0029J A B CVT D E F G H I J K L M SCIA1929E Revision; 2004 April CVT-17 2003 Murano CVT SYSTEM Hydraulic Control System ACS002IN SCIA1807E Revision; 2004 April CVT-18 2003 Murano CVT SYSTEM TCM Function ACS0020H A The function of the TCM is to: ● Receive input signals sent from various switches and sensors. ● Determine required line pressure, shifting point, and lock-up operation. ● Send required output signals to the step motor and the respective solenoids. B CONTROL SYSTEM OUTLINE The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift CVT position and reduces shifting and lock-up shocks. SENSORS (or SIGNAL) TCM ACTUATORS PNP switch Accelerator pedal position signal Closed throttle position signal Engine speed signal Engine torque signal CVT fluid temperature sensor Vehicle speed signal Second position switch signal Stop lamp switch signal Primary speed sensor Secondary speed sensor Primary pressure sensor Secondary pressure sensor Shift control Line pressure control Primary pressure control Secondary pressure control Lock-up control Engine brake control Vehicle speed control Fail-safe control Self-diagnosis CONSULT-II communication line Duet-EA control CAN system On board diagnosis Step motor Torque converter clutch solenoid valve Lock-up select solenoid valve Line pressure solenoid valve Secondary pressure solenoid valve Second position indicator lamp Þ Þ D E F G CONTROL SYSTEM DIAGRAM H I J K L M SCIA5131E Revision; 2004 April CVT-19 2003 Murano CVT SYSTEM CAN Communication Unit For 2WD Models ACS003L3 SYSTEM DESCRIPTION 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. TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE 6/TYPE 7/TYPE 8 System Diagram ● Type1 ● Type2 SKIA4902E SKIA4903E Revision; 2004 April CVT-20 2003 Murano CVT SYSTEM ● Type3 A B CVT D E SKIA4904E ● F Type4 G H I J K SKIA4905E ● Type5 L M SKIA4906E Revision; 2004 April CVT-21 2003 Murano CVT SYSTEM ● Type6 ● Type7 ● Type8 SKIA4907E SKIA4908E SKIA4909E Revision; 2004 April CVT-22 2003 Murano CVT SYSTEM Input/Output Signal Chart T: Transmit R: Receive Signals Engine speed signal ECM T Engine status signal T Engine coolant temperature signal T TCM Low tire pressure warning control unit Display unit R Display control unit R BCM R Unified meter and A/ C amp. Driver seat control unit D R R Second position signal R T Second position indicator signal T R Engine and CVT integrated control signal T R R T Accelerator pedal position signal T R Closed throttle position signal T R Wide open throttle position signal T R E F G Key switch signal T R Ignition switch signal T R P range signal T Stop lamp switch signal R CVT self-diagnosis signal R ABS operation signal R A/C compressor request signal T A/C compressor feedback signal T Blower fan motor switch signal R R T J T T R T T T R R R T R Low beam request signal T R R R R T High beam request signal T R R R T Front fog lights request signal T R Vehicle speed signal R R R R T Sleep request 1 signal T R Sleep request 2 signal T R R Door switch signal R Turn indicator signal Revision; 2004 April L T T High beam status signal K R Position lights request signal Low beam status signal I T A/C control signal Cooling fan speed request signal H R R R Air conditioner switch signal B CVT R T T IPDM E/R A R CVT position indicator signal Fuel consumption monitor signal ABS actuator and electric unit (control unit) CVT-23 R T R R R T T R T R R R 2003 Murano M CVT SYSTEM Signals ECM TCM Low tire pressure warning control unit Display unit Display control unit BCM Unified meter and A/ C amp. Driver seat control unit Key fob ID signal T R Key fob door unlock signal T R Seat belt buckle switch signal R Buzzer output signal T T R T R R IPDM E/R T R Oil pressure switch signal Fuel level sensor signal ABS actuator and electric unit (control unit) T Fuel level low warning signal R R T Malfunction indicator lamp signal T R ASCD SET lamp signal T R ASCD CRUISE lamp signal T R Input shaft revolution signal R T Output shaft revolution signal R T Front wiper request signal T R Front wiper stop position signal R T T R Rear window defogger switch signal Rear window defogger control signal R R R T Hood switch signal R T Theft warning horn request signal T R Horn chirp signal T R Tire pressure signal T Tire pressure data signal T R R R ABS warning lamp signal R Brake warning lamp signal System setting signal R T Parking brake switch signal Revision; 2004 April T T R CVT-24 T R T 2003 Murano CVT SYSTEM TYPE 9/TYPE10/TYPE 11/TYPE 12/TYPE 13/TYPE 14/TYPE 15/TYPE 16 System Diagram ● A Type9 B CVT D E F SKIA4910E ● Type10 G H I J K L SKIA4911E ● Type11 M SKIA4912E Revision; 2004 April CVT-25 2003 Murano CVT SYSTEM ● Type12 ● Type13 ● Type14 SKIA4913E SKIA4914E SKIA4915E Revision; 2004 April CVT-26 2003 Murano CVT SYSTEM ● Type15 A B CVT D E SKIA4916E ● F Type16 G H I J K SKIA4917E L M Revision; 2004 April CVT-27 2003 Murano CVT SYSTEM Input/Output Signal Chart T: Transmit R: Receive Signals ECM TCM Engine speed signal T R Engine status signal T Engine coolant temperature signal T Engine and CVT integrated control signal T R R T Accelerator pedal position signal T R Closed throttle position signal T R Wide open throttle position signal T R Low tire pressure warning control unit Display unit Display control unit BCM Unified meter and A/ C amp. R R R Steering angle sensor Driver seat control unit R R R T R Ignition switch signal T R T R Stop lamp switch signal R VDC operation signal R Second position indicator signal T R Second position signal R T Fuel consumption monitor signal T CVT self-diagnosis signal R T Input shaft revolution signal R T Output shaft revolution signal R T Air conditioner switch signal R A/C compressor request signal T A/C compressor feedback signal T Blower fan motor switch signal R R R T R R T T T R R R T T R T T R R R R T High beam request signal T R R R T Front fog lights request signal T R Vehicle speed signal R R R R T Sleep request 1 signal T R Sleep request 2 signal T Revision; 2004 April R R Low beam request signal High beam status signal R T Position lights request signal Low beam status signal R T A/C control signal Cooling fan speed request signal IPDM E/R R Key switch signal P range signal ABS actuator and electric unit (control unit) R CVT-28 R T R R 2003 Murano CVT SYSTEM Signals ECM TCM Low tire pressure warning control unit Display unit Display control unit BCM Unified meter and A/ C amp. Steering angle sensor Driver seat control unit R T T R Turn indicator signal T R Key fob ID signal T R Key fob door unlock signal T R Seat belt buckle switch signal R Door switch signal R R ABS actuator and electric unit (control unit) R Buzzer output signal Fuel level sensor signal CVT R T R T R R T R ASCD SET lamp signal T R ASCD CRUISE lamp signal T R G H Front wiper request signal T R Front wiper stop position signal R T Rear window defogger switch signal T R R R R T Hood switch signal R T Theft warning horn request signal T R Horn chirp signal T R Steering angle sensor signal T Tire pressure signal T Tire pressure data signal T CVT position indicator signal R ABS warning lamp signal R T VDC OFF indicator lamp signal R T SLIP indicator lamp signal R T Brake warning lamp signal R T Parking brake switch signal Revision; 2004 April T R R CVT-29 K R T T J L R System setting signal I R R R F T Malfunction indicator signal Rear window defogger control signal D E T Fuel level low warning signal B T T R IPDM E/R R R Oil pressure switch signal A T 2003 Murano M CVT SYSTEM CAN Communication Unit For AWD Models ACS003L4 SYSTEM DESCRIPTION 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. TYPE 17/TYPE 18/TYPE 19/TYPE 20/TYPE 21/TYPE 22/TYPE 23/TYPE 24 System Diagram ● Type17 ● Type18 SKIA4918E SKIA4919E Revision; 2004 April CVT-30 2003 Murano CVT SYSTEM ● Type19 A B CVT D E SKIA4920E ● F Type20 G H I J K SKIA4921E ● Type21 L M SKIA4922E Revision; 2004 April CVT-31 2003 Murano CVT SYSTEM ● Type22 ● Type23 ● Type24 SKIA4923E SKIA4924E SKIA4925E Revision; 2004 April CVT-32 2003 Murano CVT SYSTEM Input/Output Signal Chart T: Transmit R: Receive Signals ECM TCM Low tire pressure warning control unit Display unit Display control unit BCM Unified meter and A/ C amp. CVT position indicator signal T R Second position signal R T Second position indicator signal T R Engine speed signal T Engine status signal T R Engine coolant temperature signal T Accelerator pedal position signal T R Closed throttle position signal T R Wide open throttle position signal T R R R R Driver seat control unit R F R R G T R P range signal T Stop lamp switch signal R ABS operation signal R A/C compressor request signal T A/C compressor feedback signal T Blower fan motor switch signal R R K R T T T R R R T L T R T R R R R T High beam request signal T R R R T Front fog lights request signal T R Vehicle speed signal R J T R Low beam request signal R R R T Sleep request 1 signal T R Sleep request 2 signal T R R Door switch signal R R R R R T T R R T R Key fob door unlock signal T R CVT-33 T R Key fob ID signal Revision; 2004 April I T T High beam status signal H T Position lights request signal Low beam status signal R R A/C control signal Cooling fan speed request signal R R T R Air conditioner switch signal CVT R Ignition switch signal R IPDM E/R R R CVT self-diagnosis signal B E T T A D Key switch signal Fuel consumption monitor signal AWD control unit ABS actuator and electric unit (control unit) R 2003 Murano M CVT SYSTEM Low tire pressure warning control unit BCM Unified meter and A/ C amp. Turn indicator signal T R Seat belt buckle switch signal R T Signals ECM TCM Display unit Display control unit Driver seat control unit AWD control unit ABS actuator and electric unit (control unit) R Oil pressure switch signal Buzzer output signal Fuel level sensor signal T T R T R R IPDM E/R T Fuel level low warning signal R R T Malfunction indicator lamp signal T R ASCD SET lamp signal T R ASCD CRUISE lamp signal T Input shaft revolution signal R T R Output shaft revolution signal R T Front wiper request signal T R Front wiper stop position signal R T Rear window defogger switch signal T R Rear window defogger control signal R R Engine and CVT integrated control signal T R R T R T Hood switch signal R T Theft warning horn request signal T R Horn chirp signal T R Tire pressure signal T Tire pressure data signal T R R R ABS warning lamp signal R T Brake warning lamp signal R T System setting signal T T R AWD warning lamp signal R T AWD lock indicator lamp signal R T AWD lock switch signal T R T R Parking brake switch signal Revision; 2004 April R CVT-34 2003 Murano CVT SYSTEM TYPE 25/TYPE26/TYPE 27/TYPE 28/TYPE 29/TYPE 30/TYPE 31/TYPE 32 System Diagram ● A Type25 B CVT D E F SKIA4926E ● Type26 G H I J K L SKIA4927E ● Type27 M SKIA4928E Revision; 2004 April CVT-35 2003 Murano CVT SYSTEM ● Type28 ● Type29 ● Type30 SKIA4929E SKIA4930E SKIA4931E Revision; 2004 April CVT-36 2003 Murano CVT SYSTEM ● Type31 A B CVT D E SKIA4932E ● F Type32 G H I J K SKIA4933E L M Revision; 2004 April CVT-37 2003 Murano CVT SYSTEM Input/Output Signal Chart T: Transmit R: Receive Signals Engine and CVT integrated control signal ECM TCM T R R T Second position signal R VDC operation signal R Stop lamp switch signal R Low tire pressure warning control unit Display unit Display control unit BCM Unified meter and A/C amp. Steer ing angle sensor Drive r seat control unit T R Ignition switch signal T R T T R Wide open throttle position signal T R Second position indicator signal T Engine status signal T Engine coolant temperature signal T Accelerator pedal position signal T Fuel consumption monitor signal T CVT self-diagnosis signal R T Input shaft revolution signal R T Output shaft revolution signal R T Air conditioner switch signal R A/C compressor request signal T A/C compressor feedback signal T Blower fan motor switch signal R R R R R R R R R R R R T R R T T T T R R R T T R T T R R R R T High beam request signal T R R R T Front fog lights request signal T R Vehicle speed signal R R R R T Sleep request 1 signal T R Sleep request 2 signal T Revision; 2004 April R R Low beam request signal High beam status signal R R Position lights request signal Low beam status signal R R A/C control signal Cooling fan speed request signal R R T Engine speed signal T R T Closed throttle position signal R IPDM E/R T Key switch signal P range signal AWD control unit ABS actuator and electric unit (control unit) R R CVT-38 R T R R 2003 Murano CVT SYSTEM Signals ECM TCM Low tire pressure warning control unit Display unit Display control unit BCM Unified meter and A/C amp. Steer ing angle sensor Drive r seat control unit R T T R Turn indicator signal T R Key fob ID signal T R Key fob door unlock signal T R Seat belt buckle switch signal R Door switch signal R R AWD control unit ABS actuator and electric unit (control unit) R Buzzer output signal Fuel level sensor signal CVT R T R T R R T R ASCD SET lamp signal T R ASCD CRUISE lamp signal T R G H Front wiper request signal T R Front wiper stop position signal R T Rear window defogger switch signal T R R R R T Hood switch signal R T Theft warning horn request signal T R Horn chirp signal T R Steering angle sensor signal T Tire pressure signal T Tire pressure data signal T CVT position indicator signal R ABS warning lamp signal R T VDC OFF indicator lamp signal R T SLIP indicator lamp signal R T Brake warning lamp signal R T T R AWD warning lamp signal R T AWD lock indicator lamp signal R T AWD lock switch signal Parking brake switch signal Revision; 2004 April R CVT-39 K R T T J L R System setting signal I R R R F T Malfunction indicator signal Rear window defogger control signal D E T Fuel level low warning signal B T T R IPDM E/R R R Oil pressure switch signal A T R T R 2003 Murano M CVT SYSTEM Input/Output Signal of TCM Control item PNP switch Accelerator pedal position signal (*1) Input ACS0020J Fluid pressure control Select control Shift control Lock-up control CAN communication control Fail-safe function (*2) X X X X X X X X X X X X X X X X X Closed throttle position signal(*1) X Engine speed signal(*1) X X CVT fluid temperature sensor X X X X X Second position switch signal(*1) X X Stop lamp switch signal(*1) X X X X Primary speed sensor X X X X X Secondary speed sensor X X X X X Primary pressure sensor X X X Secondary pressure sensor X X X TCM power supply voltage signal X X X Step motor Output X X X X X X X TCC solenoid valve X X X Lock-up select solenoid valve X X X Line pressure solenoid valve X Secondary pressure solenoid valve X X X X X X *1: Input by CAN communications. *2: If these input and output signals are different, the TCM triggers the fail-safe function. Line Pressure and Secondary Pressure Control ● ● ACS0020K When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the TCM controls the line pressure solenoid valve and secondary pressure solenoid valve. This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the driving state. Secondary pressure is made by line pressure decreasing. SCIA1846E Revision; 2004 April CVT-40 2003 Murano CVT SYSTEM NORMAL CONTROL Optimize the line pressure and secondary pressure, depending on driving conditions, on the basis of the throttle position, the engine speed, the primary pulley (input) revolution speed, the secondary pulley (output) revolution speed, the brake signal, the PNP switch signal, the lock-up signal, the voltage, the target gear ratio, the fluid temperature, and the fluid pressure. A B FEEDBACK CONTROL When controlling the normal fluid pressure or the selected fluid pressure, the secondary pressure can be set more accurately by using the fluid pressure sensor to detect the secondary pressure and controlling the feed- CVT back. Shift Control ACS0020L In order to select the gear ratio which can obtain the driving force in accordance with driver's intention and the vehicle condition, monitor the driving conditions, such as the vehicle speed and the throttle position, select the appropriate gear ratio, and determine how to change the gear before reaching it in the TCM. Then send the command to the step motor, and control the flow-in/flow-out of line pressure from the primary pulley to determine the position of the moving-pulley and control the gear ratio. D E F G H I J SCIA1952E NOTE: The gear ratio is set for every position separately. K “D” POSITION L Shifting over all the ranges of gear ratios from the lowest to the highest. M SCIA1953E “S”POSITION Use this position for the improved engine braking. Revision; 2004 April CVT-41 2003 Murano CVT SYSTEM “L” POSITION By limiting the gear range to the lowest position, the strong driving force and the engine brake can be secured. SCIA1955E DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BRAKE CONTROL) When downhill is detected with the accelerator pedal released, the engine brake will be strengthened up by downshifting so as not to accelerate the vehicle more than necessary. KICKDOWN CONTROL During sudden deceleration, determine if it is a sudden deceleration from the throttle position to secure the highly responsive driving force as necessary. When it is judged as sudden deceleration, speed up the shift pattern faster than normal depression for a certain period of time, and slowly shift gears to get highly responsive shift pattern. Lock-Up and Select Control ● ● ● ● ACS002S9 The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to increase power transmission efficiency. The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid valve, which is controlled by a signal from TCM. The torque converter clutch control valve engages or releases the torque converter clutch piston. When shifting between N (P) ⇔ D (R), torque converter clutch solenoid controls engagement power of forward clutch and reverse brake. The lock-up applied gear range was expanded by locking up the torque converter at a lower vehicle speed than conventional CVT models. SCIA1958E Revision; 2004 April CVT-42 2003 Murano CVT SYSTEM TORQUE CONVERTER CLUTCH AND SELECT CONTROL VALVE CONTROL Lock-Up and Select Control System Diagram A B CVT D E F SCIA2374E G Lock-Up Released ● In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by the torque converter clutch solenoid and the lock-up apply pressure is drained. In this way, the torque converter clutch piston is not coupled. Lock-Up Applied ● In the lock-up applied state, the torque converter clutch control valve is set into the locked state by the torque converter clutch solenoid and lock-up apply pressure is generated. In this way, the torque converter clutch piston is pressed and coupled. ● I J Select Control ● H When shifting between N (P)⇔D (R), optimize the operating pressure on the basis of the throttle position, the engine speed, and the secondary pulley (output) revolution speed to lessen the shift shock. Switch lock-up control or select control with torque converter clutch solenoid valve to switching select valve switch with lock-up select solenoid valve. K L M Revision; 2004 April CVT-43 2003 Murano CVT SYSTEM Control Valve ACS002S8 FUNCTION OF CONTROL VALVE Name Function Torque converter regulator valve Optimize the supply pressure for the torque converter depending on driving conditions. Pressure regulator valve Optimize the discharge pressure from the oil pump depending on driving conditions. ● Activate or deactivate the lock-up. ● Lock-up smoothly by opening lock-up operation excessively. TCC control valve TCC solenoid valve Controls the TCC control valve or select control valve. Shift control valve Controls flow-in/out of line pressure from the primary pulley depending on the stroke difference between the stepping motor and the primary pulley. Secondary valve Controls the line pressure from the secondary pulley depending on operating conditions. Clutch regulator valve Adjust the clutch operating pressure depending on operating conditions. Secondary pressure solenoid valve Controls the secondary valve. Line pressure solenoid valve Controls the line pressure control valve. Step motor Controls the pulley ratio. Manual valve Transmit the clutch operating pressure to each circuit in accordance with the selected position. Select control valve Engage forward clutch, reverse brake smoothly depending on select operation. Select switch valve Switch torque converter clutch solenoid valve control pressure use to torque converter clutch control valve or select control valve. Lock-up select solenoid valve Controls the select switch valve. Revision; 2004 April CVT-44 2003 Murano ON BOARD DIAGNOSTIC (OBD) SYSTEM ON BOARD DIAGNOSTIC (OBD) SYSTEM Introduction PFP:00028 A ACS001SS The CVT system has two self-diagnostic systems. The first is the emission-related on board diagnostic system (OBD-II) performed by the TCM in combination B with the ECM. The malfunction is indicated by the MIL (malfunction indicator lamp) and is stored as a DTC in the ECM memory, and the TCM memory. The second is the TCM original self-diagnosis performed by the TCM. The malfunction is stored in the TCM memory. The detected items are overlapped with OBD-II self-diagnostic items. For detail, refer to CVT-71, CVT "Self-Diagnostic Result Test Mode" . OBD-II Function for CVT System ACS001ST The ECM provides emission-related on board diagnostic (OBD-II) functions for the CVT system. One function is to receive a signal from the TCM used with OBD-related parts of the CVT system. The signal is sent to the ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a diagnostic result by means of the MIL (malfunction indicator lamp) on the instrument panel. Sensors, switches and solenoid valves are used as sensing elements. The MIL automatically illuminates in One or Two Trip Detection Logic when a malfunction is sensed in relation to CVT system parts. One or Two Trip Detection Logic of OBD-II D E F ACS001SU ONE TRIP DETECTION LOGIC If a malfunction is sensed during the first test drive, the MIL will illuminate and the malfunction will be stored in the ECM memory as a DTC. The TCM is not provided with such a memory function. G TWO TRIP DETECTION LOGIC H When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC (diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — First Trip If the same malfunction as that experienced during the first test drive is sensed during the second test drive, the MIL will illuminate. — Second Trip The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during vehicle operation. I OBD-II Diagnostic Trouble Code (DTC) J ACS001SV HOW TO READ DTC AND 1ST TRIP DTC DTC and 1st trip DTC can be read by the following methods. ( with CONSULT-II or GST) CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0720 etc. These DTC are prescribed by SAE J2012. (CONSULT-II also displays the malfunctioning component or system.) ● 1st trip DTC No. is the same as DTC No. ● Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. However, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or occurred in the past and returned to normal. CONSULT-II can identify them as shown below, therefore, CONSULT-II (if available) is recommended. A sample of CONSULT-II display for DTC and 1st trip DTC is shown on the next page. DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode for “ENGINE” with CONSULT-II. Time data indicates how many times the vehicle was driven after the last detection of a DTC. SCIA2272E Revision; 2004 April CVT-45 2003 Murano K L M ON BOARD DIAGNOSTIC (OBD) SYSTEM If the DTC is being detected currently, the time data will be “0”. SAT015K If a 1st trip DTC is stored in the ECM, the time data will be “1t”. SAT016K Freeze Frame Data and 1st Trip Freeze Frame Data The ECM has a memory function, which stores the driving condition such as fuel system status, calculated load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed and vehicle speed at the moment the ECM detects a malfunction. Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data, and 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, refer to EC-125, "CONSULT-II Function" . 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 CVT related items) 1st trip freeze frame data Both 1st trip freeze frame data and freeze frame data (along with the DTC) are cleared when the ECM memory is erased. HOW TO ERASE DTC The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as described following. ● If the battery cable is disconnected, the diagnostic trouble code will be lost within 24 hours. ● When you erase the DTC, using CONSULT-II or GST is easier and quicker than switching the mode selector on the ECM. The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC related to OBD-II. For details, refer to EC-69, "Emission-related Diagnostic Information" . ● Diagnostic trouble codes (DTC) ● 1st trip diagnostic trouble codes (1st trip DTC) ● Freeze frame data Revision; 2004 April CVT-46 2003 Murano ON BOARD DIAGNOSTIC (OBD) SYSTEM ● ● ● 1st trip freeze frame data System readiness test (SRT) codes Test values A HOW TO ERASE DTC (WITH CONSULT-II) ● 1. 2. 3. 4. 5. 6. 7. B If a DTC is displayed for both ECM and TCM, it is necessary to be erased for both ECM and TCM. 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. CVT Turn CONSULT-II “ON” and touch “TRANSMISSION”. Touch “SELF-DIAG RESULTS”. D Touch “ERASE”. (The DTC in the TCM will be erased.) Then touch “BACK” twice. Touch “ENGINE”. Touch “SELF-DIAG RESULTS”. E Touch “ERASE”. (The DTC in the ECM will be erased.) F G H I J K L M SCIA5768E HOW TO ERASE DTC (WITH GST) 1. 2. 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. Select Mode 4 with Generic Scan Tool (GST). For details, refer to EC-138, "Generic Scan Tool (GST) Function" . Revision; 2004 April CVT-47 2003 Murano ON BOARD DIAGNOSTIC (OBD) SYSTEM Malfunction Indicator Lamp (MIL) ACS001SW 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-61, "WARNING LAMPS" , or see EC-650, "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; 2004 April CVT-48 2003 Murano TROUBLE DIAGNOSIS TROUBLE DIAGNOSIS DTC Inspection Priority Chart PFP:00004 A ACS001SX If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart. B NOTE: If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to CVT-76 . CVT Priority Detected items (DTC) 1 U1000 CAN communication line 2 Except above D Fail-Safe ACS001SY The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is an error in a main electronic control input/output signal circuit. FAIL-SAFE FUNCTION If any malfunction occurs in a sensor or solenoid, this function controls the CVT to make driving possible. E F Output Speed Sensor (Secondary Speed Sensor) ● The shift pattern is changed in accordance with throttle position when an unexpected signal is sent from the output speed sensor (secondary speed sensor) to the TCM. The Second position is inhibited, and the transmission is put in “D” if “S” is selected. H Input Speed Sensor (Primary Speed Sensor) ● G The shift pattern is changed in accordance with throttle position and secondary speed (vehicle speed) when an unexpected signal is sent from the input speed sensor (primary speed sensor) to the TCM. The Second position is inhibited and the transmission is put in “D” if “S” is selected. I PNP Switch ● If an unexpected signal is sent from the PNP switch to the TCM, the transmission is put in “D” CVT Fluid Temperature Sensor ● If an unexpected signal is sent from the CVT fluid temperature sensor to the TCM, the gear ratio in use before receiving the unexpected signal is maintained or the gear ratio is controlled to keep engine speed under 5000 rpm. J K Transmission Fluid Pressure Sensor A (Secondary Pressure Sensor) ● ● If an unexpected signal is sent from the transmission fluid pressure sensor A (secondary pressure sensor) to the TCM, the secondary pressure feedback control is stopped and the offset value obtained before the non-standard condition occurs is used to control line pressure. If transmission fluid pressure sensor A (secondary pressure sensor) error signal is input to TCM, secondary pressure feedback control stops, but line pressure is controlled normally. Pressure Control Solenoid A (Line Pressure Solenoid) ● If an unexpected signal is sent from the solenoid to the TCM, the pressure control solenoid A (line pressure solenoid) is turned “off” to achieve the maximum fluid pressure. Pressure Control Solenoid B (Secondary Pressure Solenoid) ● If an unexpected signal is sent from the solenoid to the TCM, the pressure control solenoid B (secondary pressure solenoid) is turned “off” to achieve the maximum fluid pressure. Torque Converter Clutch Solenoid ● If an unexpected signal is sent from the solenoid to the TCM, the torque converter clutch solenoid is turned “off” to cancel the lock-up. Step Motor ● If an unexpected signal is sent from the step motor to the TCM, the step motor coil phases “A” through “D” are all turned “off” to hold the gear ratio used right before the non-standard condition occurred. Revision; 2004 April CVT-49 2003 Murano L M TROUBLE DIAGNOSIS CVT Lock-Up Select Solenoid ● If an unexpected signal is sent from the solenoid to the TCM, the lock-up select solenoid is turned “off” to cancel the lock-up. How To Perform Trouble Diagnosis For Quick and Accurate Repair ACS001SZ INTRODUCTION The TCM receives a signal from the vehicle speed sensor, PNP switch and provides shift control or lock-up control via CVT solenoid valves. The TCM also communicates with the ECM by means of a signal sent from sensing elements used with the OBD-related parts of the CVT system for malfunction-diagnostic purposes. The TCM is capable of diagnosing malfunctioning parts while the ECM can store malfunctions in its memory. Input and output signals must always be correct and stable in the operation of the CVT system. The CVT system must be in good operating condition and be free of valve seizure, solenoid valve malfunction, etc. SAT631IB It is much more difficult to diagnose an error that occurs intermittently rather than continuously. Most intermittent errors 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. A visual check only may not find the cause of the errors. A road test with CONSULT-II (or GST) or a circuit tester connected should be performed. Follow the CVT-51, "WORK FLOW" . SAT632I Before undertaking actual checks, take a few minutes to talk with a customer who approaches with a drivability complaint. The customer can supply good information about such errors, especially intermittent ones. Find out what symptoms are present and under what conditions they occur. A “Diagnostic Worksheet” as shown on the example (Refer to CVT-52 ) should be used. Start your diagnosis by looking for “conventional” errors first. This will help troubleshoot drivability errors on an electronically controlled engine vehicle. Also check related Service bulletins. SEF234G Revision; 2004 April CVT-50 2003 Murano TROUBLE DIAGNOSIS WORK FLOW A good understanding of the malfunction conditions can make troubleshooting faster and more accurate. In general, each customer feels differently about a malfunction. It is important to fully understand the symptoms or conditions for a customer complaint. Make good use of the two sheets provided, “Information From Customer” (Refer to CVT-52 ) and “Diagnostic Worksheet” (Refer to CVT-52 ), to perform the best troubleshooting possible. A B Work Flow Chart CVT D E F G H I J K L M SCIA1973E *1. CVT-52 *2. CVT-52 *3. CVT-49 *4. CVT-56 *5. CVT-56, CVT-57 *6. CVT-59 *7. CVT-66 *8. CVT-45 *9. CVT-75 *10. CVT-76 *11. CVT-173 *12. CVT-178 *13. CVT-76 *14. CVT-173 *15. EC-69 Revision; 2004 April CVT-51 2003 Murano TROUBLE DIAGNOSIS DIAGNOSTIC WORKSHEET Information from Customer KEY POINTS ● WHAT..... Vehicle & CVT model ● WHEN..... Date, Frequencies ● WHERE..... Road conditions ● HOW..... Operating conditions, Symptoms Customer name MR/MS Model & Year VIN Trans. Model Engine Mileage malfunction Date Manuf. Date In Service Date Frequency ❏ Continuous Symptoms ❏ Vehicle does not move. ❏ Intermittent ( times a day) (❏ Any position ❏ Particular position) ❏ No shift ❏ Lock-up malfunction ❏ Shift shock or slip (❏ N → D ❏N→R ❏ Lock-up ❏ Any drive position) ❏ Noise or vibration ❏ No pattern select ❏ Others ( Malfunction indicator lamp (MIL) ) ❏ Continuously lit ❏ Not lit Diagnostic Worksheet Chart 1 ❏ Read the item on “cautions concerning fail-safe and understand the customer's complaint. CVT-49 ❏ CVT fluid inspection 2 ❏ Leak (Repair leak location.) ❏ State ❏ Amount CVT-56 ❏ Stall test and line pressure test ❏ Stall test ❏ Torque converter one-way clutch ❏ Reverse brake ❏ Forward clutch ❏ Steel belt 3 ❏ Engine ❏ Line pressure low ❏ Primary pulley ❏ Secondary pulley CVT-56, CVT-57 ❏ Line pressure inspection - Suspected part: Revision; 2004 April CVT-52 2003 Murano TROUBLE DIAGNOSIS ❏ perform all road tests and enter checks in required inspection items. CVT-59 A Check before engine is started ❏ perform self-diagnostics. Enter checks for detected items. ❏ Output speed sensor (secondary speed sensor). CVT-101 . ❏ Input speed sensor (primary speed sensor). CVT-95 . ❏ TCC solenoid valve. CVT-112 . ❏ Pressure control solenoid valve A (line pressure solenoid valve).CVT-120 . ❏ Pressure control solenoid valve B (secondary pressure solenoid valve). CVT-131 . ❏ Transmission fluid pressure sensor A (secondary pressure sensor).CVT-135 . ❏ Transmission fluid pressure sensor B (primary pressure sensor).CVT-143 . ❏ Lock-up select solenoid valve. CVT-163 . ❏ Step motor. CVT-168 . ❏ PNP switch. CVT-85 . ❏ CVT fluid temperature sensors. CVT-90 . ❏ Stop lamp switch signal. CVT-83 . ❏ Start signal. CVT-79 . ❏ Accelerator pedal position signal. CVT-155 . ❏ Vehicle speed signal. CVT-157 . ❏ Engine speed signal. CVT-108 . ❏ CAN communication. CVT-76 . ❏ TCM power supply. CVT-150 . ❏ Steel belt. CVT-110 ❏ Battery ❏ Other 4-1. 4 4-2. Driving tests B CVT D E F G CVT-59 H ❏ Cannot Be Changed To Second position. CVT-175 . ❏ CVT Does Not Shift. CVT-59 . ❏ perform self-diagnostics. Enter checks for detected items. I ❏ Output speed sensor (secondary speed sensor). CVT-101 . ❏ Input speed sensor (primary speed sensor). CVT-95 . ❏ TCC solenoid valve. CVT-112 . ❏ Pressure control solenoid valve A (line pressure solenoid valve).CVT-120 . ❏ Pressure control solenoid valve B (secondary pressure solenoid valve). CVT-131 . ❏ Transmission fluid pressure sensor A (secondary pressure sensor).CVT-135 . ❏ Transmission fluid pressure sensor B (primary pressure sensor).CVT-143 . ❏ Lock-up select solenoid valve. CVT-163 . ❏ Step motor. CVT-168 . ❏ PNP switch. CVT-85 . ❏ CVT fluid temperature sensors. CVT-90 . ❏ Stop lamp switch signal. CVT-83 . ❏ Start signal. CVT-79 . ❏ Accelerator pedal position signal. CVT-155 . ❏ Vehicle speed signal. CVT-157 . ❏ Engine speed signal. CVT-108 . ❏ CAN communication. CVT-76 . ❏ TCM power supply. CVT-150 . ❏ Steel belt. CVT-110 ❏ Battery ❏ Other 5 ❏ Inspect each system for items found to be NG in the self-diagnostics and repair or replace the malfunctioning parts. 6 ❏ perform all road tests and enter the checks again for the required items. 7 ❏ For any remaining NG items, perform the “diagnostics procedure” and repair or replace the malfunctioning parts. 8 ❏ Erase the results of the self-diagnostics from the TCM. Revision; 2004 April CVT-53 J K L M CVT-59 CVT-66, CVT-75 2003 Murano TROUBLE DIAGNOSIS CVT Electrical Parts Location ACS001T0 SCIA4282E Revision; 2004 April CVT-54 2003 Murano TROUBLE DIAGNOSIS Circuit Diagram ACS001T1 A B CVT D E F G H I J K L M TCWA0145E Revision; 2004 April CVT-55 2003 Murano TROUBLE DIAGNOSIS Inspections Before Trouble Diagnosis ACS001T2 CVT FLUID CHECK Fluid Leakage and Fluid Level Check Inspect for fluid leakage and check the fluid level. Refer to CVT-14, "Checking CVT Fluid" . ● Fluid Condition Check Inspect the fluid condition. Fluid status Conceivable Cause Required Operation Varnished (viscous varnish state) Clutch, brake scorched Replace the ATF and check the CVT main unit and the vehicle for malfunctions (wire harnesses, cooler pipes, etc.) Milky white or cloudy Water in the fluid Replace the ATF and check for places where water is getting in. Large amount of metal powder mixed in Unusual wear of sliding parts within CVT Replace the ATF and check for improper operation of the CVT. SAT638A STALL TEST Stall Test Procedure 1. 2. Inspect the amount of engine oil. Replenish the engine oil if necessary. Drive for about 10 minutes to warm up the vehicle so that the CVT fluid temperature is 50 - 80°C (122 - 176°F). Inspect the amount of CVT fluid. Replenish if necessary. SAT647B 3. Securely engage the parking brake so that the tires do not turn. SCIA1224E 4. 5. 6. 7. 8. Engine start, apply foot brake, and place selector lever in “D” position. While holding down the foot brake, gradually press down the accelerator pedal. Quickly read off the stall speed, and then quickly remove your foot from the accelerator pedal. CAUTION: Do not hold down the accelerator pedal for more than 5 seconds during this test. Move the selector lever to the “N” position. Cool down the CVT fluid. Revision; 2004 April CVT-56 SAT514G 2003 Murano TROUBLE DIAGNOSIS CAUTION: Run the engine at idle for at least one minute. Stall speed A :2,700 - 3,250 rpm Judgement Stall Test B Selector lever position Expected problem location D R H O ● Forward clutch O H ● Reverse brake L L ● Engine and torque converter one-way clutch ● Line pressure low ● Primary pulley ● Secondary pulley ● Steel belt Stall rotation H H CVT D E O: Stall speed within standard value position H: Stall speed higher than standard value L: Stall speed lower than standard value F LINE PRESSURE TEST Line Pressure Test Port G H I J SCIA1980E Line Pressure Test Procedure 1. 2. 3. 4. K Inspect the amount of engine oil and replenish if necessary. Drive the car for about 10 minutes to warm it up so that the CVT fluid reaches in the range of 50 - 80°C (122 - 176°F), then inspect the amount of CVT fluid and replenish if necessary. NOTE: The automatic fluid temperature rises in the range of 50 - 80°C (122 - 176°F) during 10 minutes of driving. After warming up CVT, remove the oil pressure detection plug and install the oil pressure gauge [special service tool: ST2505S001 (J34301-C)]. CAUTION: When using the oil pressure gauge, be sure to use the O- ring attached to the oil pressure detection plug. Securely engage the parking brake so that the tires do not turn. SCIA1224E Revision; 2004 April CVT-57 2003 Murano L M TROUBLE DIAGNOSIS 5. 6. Start the engine, and then measure the line pressure at both idle and the stall speed. CAUTION: ● Keep the brake pedal pressed all the way down during measurement. ● When measuring the line pressure at the stall speed, refer to CVT-56, "STALL TEST" . After the measurements are complete, install the oil pressure detection plug and tighten to the regulation torque below. :5.0 - 10 N-m (0.51 - 1.0 kg-m, 45 - 88 in-lb) SAT493G CAUTION: Do not reuse the O-ring. Line Pressure Engine Line Pressure Engine speed kPa (kg/cm2 , psi) R,D,L positions At idle speed 750 (7.65, 108.8) At stall speed 5300 - 5700 (54.06 - 58.14, 768.5 - 826.5)*1 VQ35DE *1: Reference values. Judgement of Line Pressure Test Judgement Possible cause Possible causes include malfunctions in the pressure supply system and low oil pump output. For example Low for all positions (P, R, N, D, L) Idle speed Only low for a specific position ● Oil pump wear ● Pressure regulator valve or plug sticking or spring fatigue ● Oil strainer Þ oil pump Þ pressure regulator valve passage oil leak ● Engine idle speed too low Possible causes include an oil pressure leak in a passage or device related to the position after the pressure is distributed by the manual valve. Possible causes include a sensor malfunction or malfunction in the line pressure adjustment function. For example High Revision; 2004 April ● Accelerator pedal position signal malfunction ● CVT fluid temperature sensor malfunction ● Pressure control solenoid A (line pressure solenoid) malfunction (sticking in “OFF” state, filter clog, cut line) ● Pressure regulator valve or plug sticking CVT-58 2003 Murano TROUBLE DIAGNOSIS Judgement Possible cause Possible causes include a sensor malfunction or malfunction in the pressure adjustment function. For example Oil pressure does not rise higher than the oil pressure for idle. Stall speed The pressure rises, but does not enter the standard position. Only low for a specific position ● Accelerator pedal position signal malfunction ● TCM breakdown ● Pressure control solenoid A (line pressure solenoid) malfunction (shorting, sticking in“ ON” state) ● Pressure regulator valve or plug sticking B CVT Possible causes include malfunctions in the pressure supply system and malfunction in the pressure adjustment function. For example ● Accelerator pedal position signal malfunction ● Pressure control solenoid A (line pressure solenoid) malfunction (sticking, filter clog) ● Pressure regulator valve or plug sticking ● ● D E Possible causes include an oil pressure leak in a passage or device related to the position after the pressure is distributed by the manual valve. F ROAD TEST Description ● A The purpose of the test is to determine overall performance of CVT and analyze causes of problems. Before road test, familiarize yourself with all test procedures and items to check. perform tests on all items until specified symptom is found. Troubleshoot items which check out No Good after road test. Refer to CVT-45, "ON BOARD DIAGNOSTIC (OBD) SYSTEM" . G H I J SAT496G Cruse Test ● ● K With CONSULT-II Using CONSULT-II, perform a cruise test and record the result. Print the result and ensure that shifts and lock-ups take place as per Shift Schedule. L M SAT601J CONSULT-II Setting 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”. Revision; 2004 April CVT-59 2003 Murano TROUBLE DIAGNOSIS 2. Connect CONSULT-II and CONSULT-II CONVERSTER to data link connector, which is located in lower instrument panel on driver side. PBIB0196E 3. 4. Turn ignition switch “ON”. Touch “START (NISSAN BASED VHCL)”. SAIA0450E 5. Touch “TRANSMISSION”. If “TRANSMISSION” or “ENGINE” is not indicated, go to GI-38, "CONSULT-II Data Link Connector (DLC) Circuit" . SCIA2272E 6. Touch “DATA MONITOR”. SCIA5492E Revision; 2004 April CVT-60 2003 Murano TROUBLE DIAGNOSIS 7. 8. 9. Touch “MAIN SIGNALS” to set recording condition. See “Numerical Display”, “Barchart Display” or “Line Graph Display”. Touch “START”. A B CVT SCIA5493E D 10. When performing cruise test, touch “Store Data”. E F G SAT236K H 11. After finishing cruise test part 1, touch “STOP”. I J K SAT237K 12. Touch “STORE”. L M SAT254K Revision; 2004 April CVT-61 2003 Murano TROUBLE DIAGNOSIS 13. Touch “DISPLAY”. SAT608J SAT974J 14. Touch “PRINT”. 15. Check the monitor data printed out. SAT238K Vehicle Speed When Shifting Gears ACS001T8 Numerical value data are reference values. Engine type Throttle position 8/8 VQ35DE 2/8 Shift pattern Engine speed (rpm) At 40 km/h (25MPH) At 60 km/h (37MPH) D position Second position L position 2,800 - 4,300 3,900 - 5,300 D position 1,200 - 2,000 1,300 - 2,100 Second position 2,200 - 3,000 2,800 - 3,600 L position 2,800 - 3,600 3,800 - 4,600 CAUTION: Lock-up clutch is engaged when vehicle speed is approximately 18 km/h (11MPH) to 40 km/h (25MPH). Revision; 2004 April CVT-62 2003 Murano TROUBLE DIAGNOSIS TCM Input/Output Signal Reference Values ACS001TC A TCM TERMINAL CONNECTOR LAYOUT B CVT D SCIA0495E TCM INSPECTION TABLE E Data are reference values and are measured between each terminal and ground. Terminal Wire Item Condition No. color 1 2 Data (Approx.) F Release your foot from the accelerator pedal. 5.0 - 7.0V R/Y Pressure control solenoid valve A (line pressure solenoid valve) Press the accelerator pedal all the way down. 1.0V Release your foot from the accelerator pedal. 5.0 - 7.0V W/B Pressure control solenoid valve B (secondary pressure solenoid valve) Press the accelerator pedal all the way down. 3.0 - 4.0V H Lock-up applied to lock-up cancelled 6.0 - 1.0V I N position Battery voltage Wait at least for 5 seconds with the selector lever in D position 0V 3 L/W TCC solenoid valve 4 L/Y Lock-up select solenoid valve When vehicle cruises J 5 L CAN H – – 6 Y CAN L – – 8 SB Back-up lamp relay Selector lever in “R” position. Battery voltage Selector lever in other positions. 0V — G K L Battery voltage M 10 Y/L Power supply — 11 G/R Step motor A 12 O/B Step motor B 13 G/W ROM assembly 14 L/R Revision; 2004 April Within 2 seconds after key switch “ON”, the time measurement by using the pulse width measurement function (Hi level) of CONSULTII.*1 CAUTION: Connect the diagnosis data link cable to the vehicle diagnosis connector. *1: A circuit tester cannot be used to test this item. ROM assembly CVT-63 0V 30.0 msec 10.0 msec — — — — — — — — 2003 Murano TROUBLE DIAGNOSIS Terminal No. Wire color 15 BR/R 19 Y/L Item ROM assembly R Step motor C 21 R/G Step motor D G/O Data (Approx.) — — — — — Battery voltage — 0V Power supply 20 24 Condition Within 2 seconds after key switch “ON”, the time measurement by using the pulse width measurement function (Hi level) of CONSULTII.*1 CAUTION: Connect the diagnosis data link cable to the vehicle diagnosis connector. *1: A circuit tester cannot be used to test this item. B 27 BR/W Battery voltage Selector lever in other position. 0V Starter relay Ground Y/R Power supply (Memory back-up) 29 LG/R Output speed sensor (secondary speed sensor) 32 GR PNP switch 3 (monitor) 34 P/B PNP switch 2 36 P/L G 0V Selector lever in “R”,“N”,“D”position. 0V Selector lever in other position. Battery voltage — When vehicle cruises PNP switch 3 PNP switch 4 37 V/W Transmission fluid pressure sensor A (secondary pressure sensor) 38 LG Input speed sensor (primary speed sensor) Revision; 2004 April — 0V PNP switch 1 28 35 10.0 msec Selector lever in “N”,“P”position. — 25 30.0 msec When vehicle cruises Battery voltage When driving [D position, 20 km/h (12 MPH)] 300 (Hz) Selector lever in “D”,“L” position. 0V Selector lever in other positions. Battery voltage Selector lever in “N”,“D”,“L”position. 0V Selector lever in other positions. Battery voltage Selector lever in “D”,“L” position. 0V Selector lever in other positions. Battery voltage Selector lever in “R”, “D”position. 0V Selector lever in other positions. Battery voltage N position idle 0.8V When driving [L position, 20 km/h (12 MPH)] 600 (Hz) CVT-64 2003 Murano TROUBLE DIAGNOSIS Terminal No. Wire color Item 41 V/O Transmission fluid pressure sensor B (primary pressure sensor) 42 W/R Sensor ground 46 L/O Sensor power 47 V CVT fluid temperature sensor 48 B Ground Condition Data (Approx.) N position idle 0.7 - 1.2V A B CVT — 0V — 4.5 - 5.5V When CVT fluid temperature is 20°C (68°F) 2.0V When CVT fluid temperature is 80°C (176°F) 1.0V D E — 0V F G H I J K L M Revision; 2004 April CVT-65 2003 Murano TROUBLE DIAGNOSIS CONSULT-II ACS004LP After performing CVT-70, "SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)" , place check marks for results on the CVT-52, "DIAGNOSTIC WORKSHEET" . Reference pages are provided following the items. NOTICE: ● Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II unit. FUNCTION Diagnostic test mode Function Reference page Work support This mode enables a technician to adjust some devices faster and more accurately by following the indications on CONSULT-II. CVT-66 Self-diagnostic results Self-diagnostic results can be read and erased quickly. CVT-71 Data monitor Input/Output data in the ECM can be read. CVT-73 CAN diagnostic support monitor The results of transmit/receive diagnosis of CAN communication can be read. — CALIB data Characteristic information for TCM and CVT assembly can be read. Do not use, but displayed. — Function test Conducted by CONSULT-II instead of a technician to determine whether each system is “OK” or “NG”. — ECU (TCM) part number ECU (TCM) part number can be read. — WORK SUPPORT MODE WITH CONSULT-II Work support item Description ENGINE BRAKE ADJ. The engine brake level setting can be canceled. CONFORM CVTF DETERIORTN The CVT fluid deterioration level can be checked. Engine Brake Adjustment 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 CONVERSTER to data link connector, which is located in lower instrument panel on driver side. 3. Turn ignition switch “ON”. PBIB0196E 4. Touch “START (NISSAN BASED VHCL)”. SAIA0450E Revision; 2004 April CVT-66 2003 Murano TROUBLE DIAGNOSIS 5. Touch “TRANSMISSION”. A B CVT SCIA2272E D 6. Touch “WORK SUPPORT”. E F G SCIA5492E 7. Touch “ENGINE BRAKE ADJUSTMENT”. H I J SCIA4287E 8. K Touch “START”. L M SCIA4288E 9. Set “ENGINE BRAKE LEVEL” by touching “UP” or “DOWN”. ENGINE BRAKE LEVEL 0: Initial set value (Engine brake level control is activated) OFF: Engine brake level control is deactivated. 10. Turn ignition switch “OFF”, wait at least 5 seconds and then turn ignition switch “ON”. SAT934J Revision; 2004 April CVT-67 2003 Murano TROUBLE DIAGNOSIS 11. Engine brake level set is completed. CAUTION: Mode of “+1” “0” “-1” “-2” “OFF” can be selected by pressing the “UP” “DOWN” on CONSULT screen. However, do not select mode other than “0” and “OFF”. If the “+1” or “-1” or “-2” is selected, that might cause the abnormality of drivability. Check CVT Fluid Deterioration Date 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 CONVERSTER to data link connector, which is located in lower instrument panel on driver side. 3. Turn ignition switch “ON”. PBIB0196E 4. Touch “START (NISSAN BASED VHCL)”. SAIA0450E 5. Touch “TRANSMISSION”. SCIA2272E 6. Touch “WORK SUPPORT”. SCIA5492E Revision; 2004 April CVT-68 2003 Murano TROUBLE DIAGNOSIS 7. Touch “CONFORM CVTF DETERIORTN”. A B CVT SCIA4287E D 8. Check“CVTF DETERIORATION DATE” CVTF DETERIORATION DATE More than 210000 : It is necessary to change CVT fluid. Less than 210000 : It is not necessary to change CVT fluid. E F G SCIA4289E CAUTION: Touch “CLEAR” after changing CVT fluid, and then erase “CVTF DETERIORATION”. H I J K SCIA4290E L M Revision; 2004 April CVT-69 2003 Murano TROUBLE DIAGNOSIS SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II) CONSULT-II Setting 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. ● For details, refer to the separate “CONSULT-II Operations Manual”. 1. Turn ignition switch “OFF”. 2. Connect CONSULT-II and CONSULT-II CONVERSTER to data link connector, which is located in lower instrument panel on driver side. 3. Turn ignition switch “ON”. PBIB0196E 4. Touch “START (NISSAN BASED VHCL)”. SAIA0450E 5. Touch “ENGINE” for OBD-II detected items or touch “TRANSMISSION” for TCM self-diagnosis. If “TRANSMISSION” or “ENGINE” is not indicated, go to GI-38, "CONSULT-II Data Link Connector (DLC) Circuit" . SCIA2272E 6. Touch “SELF-DIAG RESULTS”. Display shows malfunction experienced since the last erasing operation. CONSULT-II performs REAL-TIME SELF-DIAGNOSIS. Also, any malfunction detected while in this mode will be displayed at real time. SAT987J Revision; 2004 April CVT-70 2003 Murano TROUBLE DIAGNOSIS Self-Diagnostic Result Test Mode Items (CONSULT-II screen terms) CAN COMM CIRCUIT Malfunction is detected when... A TCM self-diagnosis OBD-II (DTC) “TRANSMISSION” with CONSULT-II MIL indicator lamp*1, “ENGINE” with CONSULT-II or GST ● When a malfunction is detected in CAN communications U1000 U1000 ● If this signal is ON other than in P or N position, this is judged to be a malfunction. (And if it is OFF in P or N position, this is judged to be a malfunction too.) P0615 — ● When the brake switch does not switch to ON or OFF P0703 — ● PNP switch 1-4 signals input with impossible pattern PNP switch 3 monitor terminal open or short circuit P0705 P0705 ● ATF TEMP SEN/ CIRC ● During running, the CVT fluid temperature sensor signal voltage is excessively high or low P0710 P0710 INPUT SPD SEN/ CIRC (IN PY SPD SEN/CIRC)*2 ● Input speed sensor (primary speed sensor) signal is not input due to an open circuit. P0715 P0715 P0720 P0720 STARTER RELAY/ CIRC BRAKE SW/CIRC PNP SW/CIRC ● An unexpected signal is input when vehicle is being driven. ● Signal from vehicle speed sensor CVT [Output speed sensor (Secondary speed sensor)] not input due to open or short circuit VEH SPD SEN/CIR AT B CVT D E F G H ● Unexpected signal input during running ● TCM does not receive the CAN communication signal from the ECM. P0725 — BELT DAMG ● Unexpected gear ratio detected P0730 — TCC SOLENOID/ CIRC ● Normal voltage not applied to solenoid due to open or short circuit P0740 P0740 ● CVT cannot perform lock-up even if electrical circuit is good. ● TCM detects as irregular by comparing difference value with slip rotation. P0744 P0744 K ● Normal voltage not applied to solenoid due to open or short circuit ● TCM detects as irregular by comparing target value with monitor value. P0745 P0745 L ● Unexpected gear ratio was detected in the LOW side due to excessively low line pressure. P0746 P0746 M ● Secondary pressure is too high or too low compared with the commanded value while driving. P0776 P0776 ● Normal voltage not applied to solenoid due to cut line, short, or the like TCM detects as irregular by comparing target value with monitor value. P0778 P0778 ● ● Signal voltage of the transmission fluid pressure sensor A (secondary pressure sensor) is too high or too low while driving. P0840 P0840 ● Correlation between the values of the transmission fluid pressure sensor A (secondary pressure sensor) and the transmission fluid pressure sensor B (primary pressure sensor) is out of specification. P0841 — ENGINE SPEED SIG A/T TCC S/V FNCTN L/PRESS SOL/CIRC PRS CNT SOL/A FCTN (L/PRESS SOL/FNCTN)*2 PRS CNT SOL/B FCTN (SEC/PRESS SOL/FNCTN)*2 PRS CNT SOL/B CIRC (SEC/PRESS SOL/CIRC)*2 TR PRS SENS/A CIRC (SEC PRS SEN/CIRC)*2 PRESS SEN/FNCTN Revision; 2004 April CVT-71 2003 Murano I J TROUBLE DIAGNOSIS Items (CONSULT-II screen terms) TR PRS SENS/B CIRC (PRI PRS SEN/ CIRC)*2 SEC/PRESS DOWN ESTM VEH SPD SIG STEP MOTOR/CIRC STEP MOTOR/ FNCTN NO DTC IS DETECTED: FURTHER TESTING MAY BE REQUIRED MIL indicator lamp*1, “ENGINE” with CONSULT-II or GST Signal voltage of the transmission fluid pressure sensor B (primary pressure sensor) is too high or too low while driving. P0845 P0845 ● Secondary fluid pressure is too low compared with the commanded value while driving. P0868 — ● When the power supply to the TCM is cut “OFF”, for example because the battery is removed, and the self-diagnostics memory function stops P1701 — ● This is not a malfunction message (Whenever shutting “OFF” a power supply to the TCM, this message appears on the screen.) ● TCM does not receive the proper accelerator pedal position signals (input by CAN communication) from ECM. P1705 — ● CAN communication with the ABS actuator and the electric unit (control unit) is malfunctioning. ● There is a great difference between the vehicle speed signal from the ABS actuator and the electric unit (control unit), and the vehicle speed sensor signal. P1722 — ● A rotation sensor error is detected because the gear does not change in accordance with the position of the stepping motor. CAUTION: One of the secondary rotation, the primary rotation, or the engine speed is displayed at the same time. P1723 — ● The electronically controlled throttle for ECM is malfunctioning. P1726 — ● Normal voltage not applied to solenoid due to cut line, short, or the like TCM detects as irregular by comparing target value with monitor value. P1740 P1740 ● ● TCM detects the unexpected line pressure. P1745 — ● Each coil of the step motor is not energized properly due to an open or a short. P1777 P1777 ● There is a great difference between the number of steps for the stepping motor and for the actual gear ratio. P1778 P1778 ● No NG item has been detected. X X LU-SLCT SOL/CIRC L/PRESS CONTROL “TRANSMISSION” with CONSULT-II ● CVT SPD SEN/ FNCTN ELEC TH CONTROL OBD-II (DTC) Malfunction is detected when... TCM-POWER SUPPLY TP SEN/CIRC A/T TCM self-diagnosis *1: Refer to CVT-48, "Malfunction Indicator Lamp (MIL)" . *2: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. Revision; 2004 April CVT-72 2003 Murano TROUBLE DIAGNOSIS Data Monitor Mode (CVT) X: Standard, —: Not applicable A Monitor Item Selection ECU INPUT SIGNALS MAIN SIGNALS SELECTION FROM MENU VSP SENSOR (km/h) X — X ESTM VSP SIG (km/h) X — X PRI SPEED SEN (rpm) X — X ENG SPEED SIG (rpm) X — X SEC HYDR SEN (V) X — X PRI HYDR SEN (V) X — X ATF TEMP SEN (V) X — X Monitored item (Unit) VVIGN SEN (V) Remarks B Output speed sensor (secondary speed sensor). D E X — X VEHICLE SPEED (km/h) — X X Vehicle speed recognized by the TCM. PRI SPEED (rpm) — X X Primary pulley speed. SEC SPEED (rpm) — — X Secondary pulley speed. ENG SPEED (rpm) — X X SLIP REV (rpm) — X X GEAR RATIO — X X G SPEED (G) — — X ACC PEDAL OPEN (0.0/8) X X X ENG TRQ ACT (N-m) — — X VENG TRQ (N-m) — X X Difference between engine speed and primary pulley speed Degree of opening for accelerator recognized by the TCM For fail-safe operation, the specific value used for control is displayed. — — X TRQ RTO — — X SEC PRESS (MPa) — X X PRI PRESS (MPa) — X X ATF TEMP — X X DSR REV (rpm) — — X DGEAR RATIO — — X DSTM STEP (step) — — X STM STEP (step) — X X LU PRS (MPa) — — X LINE PRS (MPa) — — X SEC PRS (MPa) — — X ISOLT1 (A) — X X Torque converter clutch solenoid valve output current ISOLT2 (A) — X X Pressure control solenoid valve A (line pressure solenoid valve) output current ISOLT3 (A) — X X Pressure control solenoid valve B (secondary pressure solenoid valve) output current SOLMON1 (A) X X X Torque converter clutch solenoid valve monitor current CVT-73 F G PRI TRQ (N-m) Revision; 2004 April CVT H I J K L M 2003 Murano TROUBLE DIAGNOSIS Monitor Item Selection ECU INPUT SIGNALS MAIN SIGNALS SELECTION FROM MENU SOLMON2 (A) X X X Pressure control solenoid valve A (line pressure solenoid valve) monitor current SOLMON3 (A) X X X Pressure control solenoid valve B (secondary pressure solenoid valve) monitor current Monitored item (Unit) Remarks INH SW3M (ON-OFF display) X — X PNP switch 3 ON-OFF status monitor INH SW4 (ON-OFF display) X — X PNP switch 4 ON-OFF status INH SW3 (ON-OFF display) X — X PNP switch 3 ON-OFF status INH SW2 (ON-OFF display) X — X PNP switch 2 ON-OFF status INH SW1 (ON-OFF display) X — X PNP switch 1 ON-OFF status BRAKESW (ON-OFF display) X X X Stop lamp switch FULL SW (ON-OFF display) X X X IDLE SW (ON-OFF display) X X X SECOND POS SW (ON-OFF display) X X X STRDWNSW (ON-OFF display) X — X STRUPSW (ON-OFF display) X — X DOWNLVR (ON-OFF display) X — X UPLVR (ON-OFF display) X — X NONMMODE (ON-OFF display) X — X MMODE (ON-OFF display) X — X INDLRNG (ON-OFF display) — — X “L” position indicator output INDDRNG (ON-OFF display) — — X “D” position indicator output INDNRNG (ON-OFF display) — — X “N” position indicator output INDRRNG (ON-OFF display) — — X “R” position indicator output INDPRNG (ON-OFF display) — — X “P” position indicator output CVTLAMP (ON-OFF display) — — X SECOND POS IND (ON-OFF display) — — X MMODE IND (ON-OFF display) — — X Not mounted but displayed. SMCOIL D (ON-OFF display) — — X Step motor coil “D” energizing status SMCOIL C (ON-OFF display) — — X Step motor coil “C” energizing status SMCOIL B (ON-OFF display) — — X Step motor coil “B” energizing status SMCOIL A (ON-OFF display) — — X Step motor coil “A” energizing status LUSEL SOL OUT (ON-OFF display) — — X REV LAMP (ON-OFF display) — X X STRTR RLY OUT (ON-OFF display) — — X LU SEL SOL MON (ON-OFF display) — — X STRTR RLY MON (ON-OFF display) — — X VDC ON (ON-OFF display) X — X TCS ON (ON-OFF display) X — X ABS ON (ON-OFF display) X — X ACC ON (ON-OFF display) X — X Revision; 2004 April CVT-74 Signal input with CAN communications Not mounted but displayed. PNP relay PNP relay Not mounted but displayed. 2003 Murano TROUBLE DIAGNOSIS Monitor Item Selection Monitored item (Unit) ECU INPUT SIGNALS MAIN SIGNALS SELECTION FROM MENU A Remarks RENGE — X X Indicates position is recognized by TCM. Indicates a specific value required for control when fail-safe function is activated. M GEAR POS — X X Not mounted but displayed. Voltage (V) — — X Displays the value measured by the voltage probe. Frequency (Hz) — — X DUTY·HI (high) (%) — — X DUTY·LOW (low) (%) — — X PLS WIDTH·HI (ms) — — X PLS WIDTH·LOW (ms) — — X Diagnostic Procedure Without CONSULT-II The value measured by the pulse probe is displayed. B CVT D E F ACS001TE OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST) G Refer to EC-138, "Generic Scan Tool (GST) Function" . H I J K L M Revision; 2004 April CVT-75 2003 Murano DTC U1000 CAN COMMUNICATION LINE DTC U1000 CAN COMMUNICATION LINE Description PFP:23710 ACS001TF 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 malfunction 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 ● ● ACS001TG This is an OBD-II self-diagnostic item. Diagnostic trouble code “CAN COMM CIRCUIT” with CONSULT-II or U1000 without CONSULT-II is detected when TCM cannot communicate to other control units. Possible Cause ACS001TH Harness or connectors (CAN communication line is open or shorted.) DTC Confirmation Procedure ACS001TI NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and wait for at least 6 seconds. If DTC is detected, go to CVT-78, "Diagnostic Procedure" . SCIA2272E WITH GST Follow the procedure “WITH CONSULT-II”. Revision; 2004 April CVT-76 2003 Murano DTC U1000 CAN COMMUNICATION LINE Wiring Diagram — CVT — CAN ACS001TJ A B CVT D E F G H I J K L M TCWA0147E Revision; 2004 April CVT-77 2003 Murano DTC U1000 CAN COMMUNICATION LINE TCM terminals and data are reference values. Terminal No. Wire color Item Condition Data (Approx.) 5 L CAN H – – 6 Y CAN L – – Diagnostic Procedure ACS001TK 1. CHECK CAN COMMUNICATION CIRCUIT With CONSULT-II Turn ignition switch “ON” and start engine. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-II. Is any malfunction of the “CAN COMM CIRCUIT” indicated? YES >> Print out CONSULT-II screen, GO TO LAN section. Refer to LAN-10, "Precautions When Using CONSULTII" . NO >> INSPECTION END 1. 2. SCIA2818E Revision; 2004 April CVT-78 2003 Murano DTC P0615 START SIGNAL CIRCUIT DTC P0615 START SIGNAL CIRCUIT Description ● ● ● ● ● B ACS001TM This is not an OBD-II self-diagnostic item. Diagnostic trouble code “STARTER RELAY/CIRC” with CONSULT-II is detected when park/neutral (PNP) relay (starter relay) switched “ON” other than at “P” or “N” position. (Or when switched “OFF” at “P” or “N” position). Possible Cause ● A ACS001TL TCM controls park/neutral (PNP) relay (starter relay) in IPDM E/R. TCM switches PNP relay “ON” at “P” or “N” position and allows to crank engine. Then it prohibits cranking other than at “P” or “N” position. On Board Diagnosis Logic ● PFP:25230 CVT D ACS001TN E Harness or connectors [The park/neutral position (PNP) relay (starter relay) and TCM circuit is open or shorted.] Park/neutral position (PNP) relay (starter relay) DTC Confirmation Procedure F ACS001TO NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. G H WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine. Drive vehicle for at least 2 consecutive seconds. If DTC is detected, go to CVT-81, "Diagnostic Procedure" . I J K SCIA2272E L M Revision; 2004 April CVT-79 2003 Murano DTC P0615 START SIGNAL CIRCUIT Wiring Diagram — CVT — STSIG ACS001TP TCWA0160E Revision; 2004 April CVT-80 2003 Murano DTC P0615 START SIGNAL CIRCUIT TCM terminal and data are reference values. Measured between each terminal and ground. Terminal No. Wire color 24 G/O A Item Condition PNP relay (Starter relay) IGN ON Data (Approx.) Selector lever in “N”, “P” position. Battery voltage Selector lever in other position. 0V Diagnostic Procedure B ACS001TQ 1. CHECK PNP RELAY (STARTER RELAY) (WITH CONSULT-II) CVT With CONSULT-II 1. Turn ignition switch “ON”. (Do not start engine.) 2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II and check monitor “STRTR RLY OUT”, “STRTR RLY MON”(PNP relay) ON/OFF. D E Item Shift position “STRTR RLY OUT” “STRTR RLY MON” N and P ON ON R, D and L OFF OFF OK or NG OK >> GO TO 4. NG >> GO TO 3. F SCIA2274E H 2. CHECK PNP RELAY (STARTER RELAY) (WITHOUT CONSULT-II) Without CONSULT-II 1. Turn ignition switch “ON”. (Do not start engine.) 2. Check voltage between the TCM connector and ground. Item Connector No. PNP relay (Starter relay) F103 Terminal No. (Wire color) 24 (G/O) I Shift position Voltage (Approx.) N and P Battery voltage R, D and L 0V Ground OK or NG OK >> GO TO 4. NG >> GO TO 3. J K L SCIA2022E 3. DETECT MALFUNCTIONING ITEM M Check the following: ● PNP relay (starter relay). Refer to PG-85, "STANDARDIZED RELAY" . ● Open or short-circuits in the harness between TCM and the PNP relay ● Ground circuit for the PNP relay (starter relay) OK or NG OK >> GO TO 4. NG >> Repair or replace damaged parts. 4. CHECK DTC Check again. ● Refer to CVT-79, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 5. Revision; 2004 April G CVT-81 2003 Murano DTC P0615 START SIGNAL CIRCUIT 5. CHECK TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. Revision; 2004 April CVT-82 2003 Murano DTC P0703 STOP LAMP SWITCH CIRCUIT DTC P0703 STOP LAMP SWITCH CIRCUIT Description PFP:25320 A ACS002SJ “ON”, “OFF” status of the stop lamp switch is sent via the CAN communication from the unified meter and the A/C amp to TCM using the signal. On Board Diagnosis Logic ● ● – ACS002SK This is not an OBD-II self-diagnostic item. CVT Diagnostic trouble code “BRAKE SW/CIRC” with CONSULT-II is detected when the brake switch does not switch to “ON” and “OFF”. The brake switch does not switch to “ON”, “OFF”. D Possible Cause ● ● B ACS002SL Harness or connectors [The stop lamp switch and unified meter and A/C amp circuit is open or shorted.] [CAN communication line is open or shorted.] Stop lamp switch E F DTC Confirmation Procedure ACS002SM NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. G H WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSON” with CONSULT-II. Start engine. Start vehicle for at least 3 consecutive seconds. If DTC is detected, go to CVT-83, "Diagnostic Procedure" . I J K SCIA2272E L Diagnostic Procedure ACS002IT 1. CHECK CAN COMMUNICATION LINE Perform the self-diagnosis. Is any malfunction of the “CAN COMM CIRCUIT” indicated? YES >> Check CAN communication line. Refer to CVT-76, "DTC U1000 CAN COMMUNICATION LINE" . NO >> GO TO 2. Revision; 2004 April CVT-83 2003 Murano M DTC P0703 STOP LAMP SWITCH CIRCUIT 2. CHECK STOP LAMP SWITCH CIRCUIT With CONSULT-II Turn ignition switch “ON”. (Do not start engine.) Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSON” with CONSULT-II. 3. Read out ON/OFF switching action of the “BRAKE SW”. OK or NG OK >> INSPECTION END NG >> GO TO 3. 1. 2. SCIA2275E 3. CHECK STOP LAMP SWITCH Check continuity between stop lamp switch harness connector E116 terminals 1 (R/Y) and 2 (R/G). SCIA3700E Check stop lamp switch after adjusting brake pedal — refer to BR-6, "BRAKE PEDAL" . OK or NG OK >> Check the following. If NG, Repair or Replace Damaged Parts. ● Harness for short or open between battery and stop lamp switch. ● Harness for short or open between stop lamp switch and unified meter and A/C amp. NG >> Repair or Replace the stop lamp switch. Revision; 2004 April CVT-84 2003 Murano DTC P0705 PARK/NEUTRAL POSITION SWITCH DTC P0705 PARK/NEUTRAL POSITION SWITCH Description ● ● PFP:32006 A ACS001TR The park/neutral position (PNP) switch includes 4 transmission position switches. TCM judges the selector lever position by the PNP switch signal. B Shift position PNP switch 1 PNP switch 2 PNP switch 3 PNP switch 4 PNP switch 3 (monitor) P OFF OFF OFF OFF OFF R ON OFF OFF ON OFF N ON ON OFF OFF OFF D ON ON ON ON ON L OFF ON ON OFF ON On Board Diagnosis Logic ● ● – – ● ● D ACS001TS This is an OBD-II self-diagnostic item. Diagnostic trouble code “PNP SW/CIRC” with CONSULT-II or P0705 without CONSULT-II is detected under the following conditions. When TCM does not receive the correct voltage signal from the PNP switches 1, 2, 3 and 4 based on the gear position. When the signal from monitor terminal of PNP switch 3 is different from PNP switch 3. Possible Cause ● CVT E F G ACS001TT H Harness or connectors [The park/neutral position (PNP) switches 1, 2, 3, 4 and TCM circuit is open or shorted.] Park/neutral position (PNP) switches 1, 2, 3, 4 Park/neutral position (PNP) switch 3 monitor terminal is open or shorted DTC Confirmation Procedure I ACS001TU CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. J K L WITH CONSULT-II 1. 2. 3. 4. 5. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II. Start engine. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds. VHCL SPEED SE: More than 10km/h (6 MPH) ENG SPEED SIG: More than 450rpm ACC PEDAL OPEN: More than 1/8 If DTC is detected, go to CVT-87, "Diagnostic Procedure" . M SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-85 2003 Murano DTC P0705 PARK/NEUTRAL POSITION SWITCH Wiring Diagram — CVT — PNP/SW ACS001TV TCWA0148E Revision; 2004 April CVT-86 2003 Murano DTC P0705 PARK/NEUTRAL POSITION SWITCH TCM terminals and data are reference values. Measured between each terminal and ground. Terminal No. Wire color 27 BR/W 34 P/B 35 P/L 36 G 32 GR Item Condition PNP switch 1 PNP switch 2 IGN ON PNP switch 3 PNP switch 4 PNP switch 3 (monitor) Data (Approx.) Selector lever in “P”, “L” position. Battery voltage Selector lever in other position. 0V Selector lever in “P”, “R” position. Battery voltage Selector lever in other position. 0V Selector lever in “P”, “R”, “N” position. Battery voltage Selector lever in other position. 0V Selector lever in “P”, “N”, “L” position. Battery voltage Selector lever in other position. 0V Selector lever in “P”, “R”, “N” position. Battery voltage Selector lever in other position. 0V Diagnostic Procedure B F With CONSULT-II Turn ignition switch “ON”. (Do not start engine.) Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSON” with CONSULT-II. 3. Selector lever to “P”, “R”, “N”,“D” and “L” position to check the value of “INH SW1” “INH SW2” “INH SW3” “INH SW4” and “INH SW3M”. “INH SW2” D ACS001TW 1. 2. “INH SW1” CVT E 1. CHECK PNP SW CIRCUIT (WITH CONSULT-II) Shift position A “INH SW3” “INH SW4” G H I “INH SW3M” P OFF OFF OFF OFF OFF R ON OFF OFF ON OFF N ON ON OFF OFF OFF D ON ON ON ON ON L OFF ON ON OFF ON SCIA2276E J K OK or NG OK >> GO TO 4. NG >> GO TO 3. L M Revision; 2004 April CVT-87 2003 Murano DTC P0705 PARK/NEUTRAL POSITION SWITCH 2. CHECK PNP SW CIRCUIT (WITHOUT CONSULT-II) Without CONSULT-II 1. Turn ignition switch “ON”. (Do not start engine.) 2. Change selector lever to “P“, “R”, “N”, “D” or “L” position to check voltage between the TCM connector terminals and ground. Connector No. Shift position F104 Terminal No. (Wire color) 27 (BR/W) Ground 34 (P/B) Ground 35 (P/L) Ground 36 (G) Ground 32 (GR) Ground P Battery voltage Battery voltage Battery voltage Battery voltage Battery voltage R 0V Battery voltage Battery voltage 0V Battery voltage N 0V 0V Battery voltage Battery voltage Battery voltage D 0V 0V 0V 0V 0V L Battery voltage 0V 0V Battery voltage 0V SCIA2024E OK or NG OK >> GO TO 4. NG >> GO TO 3. 3. CHECK THE HARNESS BETWEEN TCM AND PNP SWITCH 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector. Check the continuity between TCM connector terminals (vehicle side) 27 (BR/W), 34 (P/B), 35 (P/L), 36 (G), 32 (GR) and ground. Connector No. Terminal No. (Wire color) 27 (BR/W) - ground 34 (P/B) - ground 35 (P/L) - ground F104 36 (G) - ground 32 (GR) - ground Condition Continuity Select lever in “P”, “L” position. No Select lever in other position. Yes Select lever in “P”, “R” position. No Select lever in other position. Yes Select lever in “P”, “R”, “N” position. No Select lever in other position. Yes Select lever in “P”,“N”, “L” position. No Select lever in other position. Yes Select lever in “P”, “R”, “N” position. No Select lever in other position. Yes SCIA2337E 4. If OK, check the harness for short-circuit to ground or the power source. OK or NG OK >> GO TO 5. NG >> GO TO 4. Revision; 2004 April CVT-88 2003 Murano DTC P0705 PARK/NEUTRAL POSITION SWITCH 4. DETECT MALFUNCTIONING ITEM A Check the following items. ● Open or short-circuit in the harness between TCM and PNP switch 1, 2, 3, 4. ● Open or short-circuit in the harness between TCM and PNP switch 3 monitor. ● Open-circuit in ground between TCM and PNP switch (transaxle assembly). ● PNP switch. Refer to CVT-89, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. B CVT D 5. CHECK DTC Check again. ● Refer to CVT-85, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 6. E F 6. CHECK TCM INSPECTION G 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> 1. Repair or replace damaged parts. 2. Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . Component Inspection H I ACS001TX PNP SWITCH 1. J Change selector lever to various positions to check the continuity between terminals on the PNP switch and ground. PNP SW SW 1 SW 2 Shift position Connector No. R, N, D Terminal No. 4 - Ground No N, D, L Yes 5 - Ground D, L R, D F6 14 - Ground 15 - Ground 2. 3. 4. D, L M Yes No other position. SW 3 Monitor L No other position. SW 4 Yes other position. other position. SW 3 K Continuity SCIA2025E Yes No 18 - Ground other position. Yes No If NG, check the continuity with the control linkage disconnected. (Refer to Step 1 above.) If OK with the control linkage disconnected, adjust the control linkage. Refer to CVT-183, "Adjustment of CVT Position" . If NG even when the control linkage is disconnected, replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . Revision; 2004 April CVT-89 2003 Murano DTC P0710 CVT FLUID TEMPERATURE SENSOR CIRCUIT DTC P0710 CVT FLUID TEMPERATURE SENSOR CIRCUIT Description PFP:31020 ACS002SN The CVT fluid temperature sensor detects the CVT fluid temperature and sends a signal to the TCM. CONSULT-II Reference Value Remarks: Specification data are reference values. Monitor item CVT fluid temperature sensor ACS002SO Condition Specification (Approximately) Cold [20°C (68°F)] 2.0V Hot [80°C (176°F)] 1.0V On Board Diagnosis Logic ● ● ACS002SP This is an OBD-II self-diagnostic item. Diagnostic trouble code “ATF TEMP SEN/CIRC” with CONSULT-II or P0710 without CONSULT-II is detected when TCM receives an excessively low or high voltage from the sensor. Possible Cause ● ● ACS002SQ Harness or connectors (The sensor circuit is open or shorted.) CVT fluid temperature sensors DTC Confirmation Procedure ACS002SR CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II. Start engine and maintain the following conditions for at least 10 minutes (Total). (It is not necessary to maintain continuously.) VHCL SPEED SE: 10 km/h (6 MPH) or more ENG SPEED: 450rpm more than ACC PEDAL OPEN: More than 1/8 Selector lever: “D” position If DTC is detected, go to CVT-92, "Diagnostic Procedure" . SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-90 2003 Murano DTC P0710 CVT FLUID TEMPERATURE SENSOR CIRCUIT Wiring Diagram - CVT - FTS ACS0020Q A B CVT D E F G H I J K L M TCWA0149E Revision; 2004 April CVT-91 2003 Murano DTC P0710 CVT FLUID TEMPERATURE SENSOR CIRCUIT TCM terminals and data are reference values. Measured between each terminal and ground. Terminal No. Wire color 42 W/R 47 V Item Condition Judgement standard (Approx.) — — Sensor ground CVT fluid temperature sensor When CVT fluid temperature is 20°C (68°F). 2.0V When CVT fluid temperature is 80°C (176°F). 1.0V Diagnostic Procedure ACS002SS 1. CHECK FLUID TEMPERATURE SENSOR SIGNAL (WITH CONSULT-II) With CONSULT-II Start engine. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRASMISSION” with CONSULT-II. 3. Read out the value of “ATF TEMP SEN”. 1. 2. Item name CVT fluid temperature sensor Condition °C (°F) Display value (Approx.) V 20 (68) 2.0 80 (176) 1.0 OK or NG OK >> GO TO 6. NG >> GO TO 3. SCIA2277E 2. CHECK FLUID TEMPERATURE SENSOR SIGNAL (WITHOUT CONSULT-II) Without CONSULT-II 1. Start engine. 2. Check voltage between TCM connector and ground while warming up CVT. Refer to CVT-91, "Wiring Diagram - CVT - FTS" . Name Connector No. Terminal No. Fluid temperature sensor 1 F104 47 (V) - 42 (W/R) (ground) Temperature °C (°F) Voltage (V) (Approx.) 20 (68) 2.0 80 (176) 1.0 3. 4. 5. Turn ignition switch “OFF”. Disconnect the TCM connector. Check if there is continuity between the connector terminal and ground. OK or NG OK >> GO TO 6. NG >> GO TO 3. Revision; 2004 April CVT-92 SCIA2027E 2003 Murano DTC P0710 CVT FLUID TEMPERATURE SENSOR CIRCUIT 3. CHECK FLUID TEMPERATURE SENSOR CIRCUIT 1. 2. 3. A Turn ignition switch “OFF”. Disconnect the TCM connector. Check resistance between terminals 47 and 42. Name Connector No. Terminal No. (Wire color) F104 47 (V) - 42 (W/ R) (ground) CVT fluid temperature sensor B Temperature °C (°F) Resistance (KΩ) (Approx.) 20 (68) 2.5 80 (176) 0.3 Disconnect the TCM connector. Check if there is continuity between the connector terminal and ground. OK or NG OK >> GO TO 6. NG >> GO TO 4. CVT D 4. 5. 4. CHECK FLUID TEMPERATURE SENSOR 1. 2. 3. Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminals 17 and 19. E SCIA2338E F G H Name Connector No. Terminal No. F6 17 - 19 CVT fluid temperature sensor Temperature °C (°F) Resistance (KΩ) (Approx.) 20 (68) 2.5 80 (176) 0.3 4. Reinstall any part removed. OK or NG OK >> GO TO 5. NG >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . 5. 1. 2. 3. I J SCIA2026E K CHECK THE HARNESS BETWEEN TCM AND CVT FLUID TEMPERATURE SENSOR L Turn ignition switch “OFF”. Disconnect the TCM connector and CVT unit harness connector. Check continuity between TCM connector and CVT unit harness connector. Connector No. Terminal No. (Wire color) F104 42 (W/R) CVT unit harness connector F6 19 (W/R) Item Connector No. Terminal No. (Wire color) F104 47 (V) Item TCM TCM CVT unit harness connector F6 M Continuity Yes Continuity 17 (V) SCIA2339E Yes 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> GO TO 6. NG >> Repair or replace damaged parts. Revision; 2004 April CVT-93 2003 Murano DTC P0710 CVT FLUID TEMPERATURE SENSOR CIRCUIT 6. CHECK DTC Perform “DTC Confirmation Procedure”. Refer to CVT-90, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 7. 7. PERFORM TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. Component Inspection ACS003KY CVT FLUID TEMPERATURE SENSOR 1. 2. 3. Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminals 17 and 19. Name CVT fluid temperature sensor 4. Connector No. Terminal No. (Wire color) F6 17 (V) - 19 (W/R) Temperature °C (°F) Resistance (KΩ) (Approx.) 20 (68) 2.5 80 (176) 0.3 If NG, replace transaxle assembly. Refer to CVT-197, "Removal and Installation" . SCIA2026E Revision; 2004 April CVT-94 2003 Murano DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) Description PFP:31935 A ACS002ST The input speed sensor (primary speed sensor) detects the primary pulley revolution speed and sends a signal to the TCM. NOTE: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. CONSULT-II Reference Value ACS002SU Remarks: Specification data are reference values. Monitor item Condition Engine running Closely matches the tachometer reading. PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed. On Board Diagnosis Logic ● ● D ACS002SV This is an OBD-II self-diagnostic item. Diagnostic trouble code “IN PY SPD SEN/CIRC” with CONSULT-II or P0715 without CONSULT-II is detected when TCM does not receive the proper signal from the sensor. Possible Cause ● CVT Specification (Approximately) ENG SPEED SIG ● B E F ACS002SW G Harness or connectors (The sensor circuit is open or shorted.) Input speed sensor (primary speed sensor) H DTC Confirmation Procedure ACS002SX CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. I J K WITH CONSULT-II 1. 2. Turn ignition switch “ON” and select “DATA MONITOR” mode for “ENGINE” with CONSULT-II. Start engine and maintain the following conditions for at least 5 consecutive seconds. VHCL SPEED SE: 10 km/h (6 MPH) or more ACC PEDAL OPEN: More than 1/8 Selector lever: D position ENG SPEED: 450 rpm or more Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test. Revision; 2004 April CVT-95 L M SCIA2272E 2003 Murano DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) If the check result is NG, go to “Diagnostic Procedure”, CVT-98 . SCIA5492E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-96 2003 Murano DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) Wiring Diagram - CVT - PRSCVT ACS0020X A B CVT D E F G H I J K L M TCWA0156E Revision; 2004 April CVT-97 2003 Murano DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) Remarks: Specification data are reference values. Terminal No. Wire color 38 G/Y Item Condition Input speed sensor (primary speed sensor) When driving [L position, 20 km/h (12 MPH)] Diagnostic Procedure Judgement standard (Approx.) 600 Hz ACS0020Y 1. CHECK INPUT SIGNALS With CONSULT-II Start engine. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “PRI SPEED SEN”. 1. 2. Monitor item Specification (Approximately) Condition During driving (lock-up ON) PRI SPEED SEN Approximately matches the engine speed. OK or NG OK >> GO TO 6. NG >> GO TO 2. SCIA2278E 2. CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) 1. 2. 3. Start engine. Check voltage between TCM connector terminals 46 (L/O) and 42 (W/R). Item Connector No. Terminal No. (Wire color) Data (Approx.) TCM F104 46 (L/O) - 42 (W/R) 4.5 - 5.5 (V) Check the pulse with CONSULT-II or oscilloscope. When vehicle cruises. Name Input speed sensor (primary speed sensor) Condition When running at 20 km/h (12 MPH) in “L” position with the closed throttle position signal “OFF”, use the CONSULT-II pulse frequency measuring function. CAUTION: Connect the data link connector to the vehicle-side diagnosis connector. Item Connector No. Terminal No. (Wire color) TCM F104 38 (LG) Data (Approx.) Name Input speed sensor (primary speed sensor) 600 (Hz) OK or NG OK >> GO TO 6. NG - 1 >> Battery voltage is not supplied: GO TO 3. NG - 2 >> Battery voltage is supplied, but there is a malfunction in the frequency: GO TO 4. Revision; 2004 April CVT-98 SCIA1915E 2003 Murano DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) 3. CHECK THE HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND) 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector and CVT unit harness connector. Check continuity between TCM connector and CVT unit harness connector. Connector No. Terminal No. (Wire color) F104 42 (W/R) CVT unit harness connector F6 19 (W/R) Item Connector No. Terminal No. (Wire color) F104 46 (L/O) Item TCM TCM CVT unit harness connector F6 A B CVT Continuity Yes D Continuity E SCIA2340E Yes 20 (L/O) F 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. G 4. CHECK THE HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR [INPUT SPEED H SENSOR (PRIMARY SPEED SENSOR)] 1. 2. 3. I Turn ignition switch “OFF”. Disconnect the TCM connector and CVT unit harness connector. Check continuity between TCM connector and CVT unit harness connector. Item TCM Connector No. Terminal No. (Wire color) F104 38 (LG) F6 22 (LG) CVT unit harness connector Continuity K Yes 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5. J L SCIA2341E CHECK THE TCM SHORT Replace same type TCM, perform self-diagnosis. Erase self-diag result and them drive the vehicle [10km/h (6MPH) or more], perform self-diagnosis. Refer to CVT-95, "DTC Confirmation Procedure" . Is the “IN PY SPD SEN/CIR” detected again? YES >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . NO >> Replace the TCM. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" . 6. CHECK DTC Perform “DTC Confirmation Procedure”. Refer to CVT-95, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 7. Revision; 2004 April CVT-99 2003 Murano M DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR) 7. PERFORM TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. Revision; 2004 April CVT-100 2003 Murano DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) PFP:31935 Description A ACS002SY The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)] detects the revolution of the B CVT output shaft and emits a pulse signal. The pulse signal is sent to the TCM, which converts it into vehicle speed. NOTE: CVT CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. CONSULT-II Reference Value ACS002SZ Remarks: Specification data are reference values. Monitor item Condition Vehicle speed D Specification (Approximately) During driving Approximately matches the speedometer reading. E On Board Diagnosis Logic ● ● ACS002T0 This is an OBD-II self-diagnostic item. Diagnostic trouble code “VEH SPD SEN/CIR AT” with CONSULT-II or P0720 without CONSULT-II is detected TCM does not receive the proper signal from the sensor. Possible Cause ● ● F ACS002T1 G Harness or connectors (The sensor circuit is open or shorted.) Output speed sensor (secondary speed sensor) DTC Confirmation Procedure H ACS002T2 CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. I J K WITH CONSULT-II 1. 2. Turn ignition switch “ON” and select “DATA MONITOR” mode for “ENGINE” with CONSULT-II. Start engine and maintain the following conditions for at least 12 consecutive seconds. ACC PEDAL OPEN: More than 1/8 Selector lever: D position Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test. L M SCIA2272E Revision; 2004 April CVT-101 2003 Murano DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) If the check result is NG, go to “SELF-DIAG RESULTS”, CVT104 . SCIA5492E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-102 2003 Murano DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) Wiring Diagram - CVT - SESCVT ACS002IQ A B CVT D E F G H I J K L M TCWA0150E Revision; 2004 April CVT-103 2003 Murano DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) Remarks: Specification data are reference values. Terminal No. Wire color Item Condition 29 G Output speed sensor (secondary speed sensor) 42 W/R When driving [D position, 20 km/h (12 MPH)] Sensor ground — Diagnostic Procedure Judgement standard (Approx.) 300 Hz — ACS002T3 1. CHECK INPUT SIGNAL With CONSULT-II 1. Start engine. 2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “VSP SENSOR”. Monitor item VSP SENSOR Condition During driving Specification (Approximately) Approximately matches the speedometer reading. OK or NG OK >> GO TO 8. NG >> GO TO 2. SCIA2279E 2. CHECK SECONDARY SPEED SENSOR 1. 2. With CONSULT-II Start engine. Check power supply to output speed sensor (secondary speed sensor) by voltage between TCM connector terminals 10 (Y/L), 19 (Y/L) and 42 (W/R). Refer to CVT-55, "Circuit Diagram" . Item Connector No. TCM F103, F104 Terminal No. (Wire color) Data (Approx.) 10 (Y/L) - 42 (W/R) 3. 19 (Y/L) - 42 (W/R) Battery voltage If OK check the pulse when vehicle cruises. Name Condition Output speed sensor (secondary speed sensor) When running at 20 km/h (12 MPH) in “D” position, use the CONSULT-II pulse frequency measuring function. CAUTION: Connect the data link connector to the vehicle-side diagnosis connector. Item Connector No. Terminal No. (Wire color) Name Data (Approx.) TCM F104 29 (G) Output speed sensor (secondary speed sensor) 300 (Hz) OK or NG OK >> GO TO 8. NG >> GO TO 3. SCIA2344E Revision; 2004 April CVT-104 2003 Murano DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) 3. CHECK THE POWER AND SENSOR GROUND 1. 2. 3. 4. A Turn ignition switch “OFF”. Disconnect the output speed sensor (secondary speed sensor) harness connector. Turn ignition switch “ON”. Check voltage between output speed sensor (secondary speed sensor) harness connector 1 (W/R) and 3 (Y/G). B CVT Item Connector No. Terminal No. (Wire color) Data (Approx.) Output speed sensor (secondary speed sensor) F35 1 (W/R) - 3 (Y/G) Battery voltage D E SCIA2345E 5. F Check voltage between output speed sensor (secondary speed sensor) harness connector 3 (Y/G) and ground. Item Connector No. Terminal No. (Wire color) Data (Approx.) Output speed sensor (secondary speed sensor) F35 3 (Y/G) - ground Battery voltage G 6. If OK, check harness for short to ground and short power. 7. Reinstall any part removed. OK or NG SCIA2346E OK >> GO TO 4. NG - 1 >> Battery voltage is not supplied between terminals 1 and 3, terminals 1 and ground.:GO TO 6. NG - 2 >> Battery voltage is not supplied between terminals 1 and 3 only.: GO TO 7. H I J 4. CHECK THE HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) 1. 2. 3. K Turn ignition switch “OFF”. Disconnect the TCM connector and output speed sensor (secondary speed sensor) harness connector. Check continuity between TCM connector and output speed sensor (secondary speed sensor) harness connector. Connector No. Terminal No. (Wire color) TCM F104 29 (G) Output speed sensor (secondary speed sensor) F35 2 (G) Item Continuity Revision; 2004 April M Yes 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. CVT-105 L SCIA1967E 2003 Murano DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) 5. CHECK THE TCM SHORT Replace same type TCM, perform self-diagnosis. Erase self-diag result and them drive the vehicle [more than 40km/h (25MPH)], perform self-diagnosis. Refer to CVT-101, "DTC Confirmation Procedure" . Is the “VEH SPD SEN/CIR AT” detected again? YES >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . NO >> Replace the TCM. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" . 6. CHECK THE HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) (POWER) 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector and output speed sensor (secondary speed sensor) harness connector. Check continuity between TCM connector and output speed sensor (secondary speed sensor) harness connector. Refer to CVT-55, "Circuit Diagram" . Connector No. Terminal No. (Wire color) TCM F103 10 (Y/L) Output speed sensor (secondary speed sensor) F35 3 (Y/G) Item Connector No. Terminal No. (Wire color) TCM F103 19 (Y/L) Output speed sensor (secondary speed sensor) F35 3 (Y/G) Item Continuity Yes Continuity SCIA2369E Yes 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> 10A fuse (No.71, located in the IPDM E/R) or ignition switch are malfunctioning. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK THE HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) (SENSOR GROUND) 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector and output speed sensor (secondary speed sensor) harness connector. Check continuity between TCM connector and output speed sensor (secondary speed sensor) harness connector. Refer to CVT-55, "Circuit Diagram" . Connector No. Terminal No. (Wire color) TCM F104 42 (W/R) Output speed sensor (secondary speed sensor) F35 1 (W/R) Item Continuity Yes 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> GO TO 9. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision; 2004 April CVT-106 SCIA2347E 2003 Murano DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR) 8. CHECK DTC A Perform “DTC Confirmation Procedure”. Refer to CVT-101, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 9. B 9. PERFORM TCM INSPECTION CVT 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. D E F G H I J K L M Revision; 2004 April CVT-107 2003 Murano DTC P0725 ENGINE SPEED SIGNAL DTC P0725 ENGINE SPEED SIGNAL Description PFP:24825 ACS001U4 The engine speed signal is sent from the ECM to the TCM. On Board Diagnosis Logic ● ● ACS001U5 This is not an OBD-II self-diagnostic item. Diagnostic trouble code “ENGINE SPEED SIG” with CONSULT-II is detected when TCM does not receive the engine speed signal (input by CAN communication) from ECM. Possible Cause ACS001U6 Harness or connectors (The ECM to the TCM circuit is open or shorted.) DTC Confirmation Procedure ACS001U7 CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. 3. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 10 consecutive seconds. PRI SPEED SEN: More than 1000rpm If DTC is detected, go to CVT-108, "Diagnostic Procedure" . SCIA2272E Diagnostic Procedure ACS001U8 1. CHECK DTC WITH TCM With CONSULT-II 1. Turn ignition switch “ON”. (Do not start engine.) 2. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-II. Refer to CVT-71, "Self-Diagnostic Result Test Mode" . OK or NG OK >> GO TO 2. NG >> Check the DTC Detected Item, Go to CVT-70, "SELFDIAGNOSTIC PROCEDURE (WITH CONSULT-II)" . ● If CAN communication line is detected, go to CVT-76, "DTC U1000 CAN COMMUNICATION LINE" . Revision; 2004 April CVT-108 SCIA2272E 2003 Murano DTC P0725 ENGINE SPEED SIGNAL 2. CHECK INPUT SIGNALS A With CONSULT-II Start engine. Select “ECM INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. While monitoring engine speed, check for engine speed change corresponding to “ACC PEDAL OPEN”. OK or NG OK >> GO TO 3. NG >> Check the Ignition Signal Circuit. ● Refer to EC-596, "IGNITION SIGNAL" . 1. 2. B CVT D SCIA2278E 3. CHECK DTC Perform “DTC Confirmation Procedure”. Refer to CVT-108, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 4. E F G 4. PERFORM TCM INSPECTION Perform TCM input/output signal inspection. Refer to CVT-63, "TCM Input/Output Signal Reference Values" . 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. 1. H I J K L M Revision; 2004 April CVT-109 2003 Murano DTC P0730 BELT DAMAGE DTC P0730 BELT DAMAGE Description PFP:31935 ACS002IU TCM selects the gear ratio using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signal. Then it change the operating pressure of the primary pulley and the secondary pulley and change the groove width of the pulley. CONSULT-II Reference Value ACS002T4 Remarks: Specification data are reference values. Monitor item Condition GEAR RATIO Specification (Approximately) During driving 2.37 - 0.43 On Board Diagnosis Logic ● ● ● ACS002IV This is not an OBD-II self-diagnostic item. TCM calculates the actual gear ratio with input speed sensor (primary speed sensor) and output speed sensor (secondary speed sensor). Diagnostic trouble code “BELT DAMAGE” with CONSULT-II is detected, when TCM receives the unexpected gear ratio detected. Possible Cause ● ACS002IW Transaxle assembly DTC Confirmation Procedure ACS002T5 CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Make sure that output voltage of CVT fluid temperature sensor is within the range below. FLUID TEMP SEN: 1.0 - 2.0V If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid) SCIA2272E 3. 4. 5. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 30 consecutive seconds. TEST START FROM 0 km/h (0 MPH) CONSTANT ACCELERATION: Keep 30 sec or more VEHICLE SPEED: 10 km/h (6 MPH) or more ACC PEDAL OPEN: More than 1/8 Selector lever: D position ENG SPEED: 450 rpm or more If the check result is NG, GO TO CVT-111, "Diagnostic Procedure" . Revision; 2004 April CVT-110 SCIA5492E 2003 Murano DTC P0730 BELT DAMAGE Diagnostic Procedure ACS002IY 1. CHECK DTC A Perform DTC Confirmation Procedure. B ● Refer to CVT-110, "DTC Confirmation Procedure" . Are any DTC displayed? YES - 1>> DTC except for “BELT DAMG” is displayed: Go to Check the DTC detected item. Refer to CVT-71, CVT "Self-Diagnostic Result Test Mode" . YES - 2>> DTC for “BELT DAMG” is displayed: Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . NO >> INSPECTION END D E F G H I J K L M Revision; 2004 April CVT-111 2003 Murano DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE Description PFP:31940 ACS00210 The torque converter clutch solenoid valve is activated by the TCM in response to signals sent from the vehicle speed and throttle position sensors. Lock-up piston operation will then be controlled. Lock-up operation, however, is prohibited when CVT fluid temperature is too low. When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up. ● ● ● CONSULT-II Reference Value Remarks: Specification data are reference values. Monitor item ISOLT1 When vehicle cruises in “D” position ACS00211 Condition Approximately 0.7A Lock-up “ON” Approximately 0.0A On Board Diagnosis Logic ● ● – ACS00212 This is an OBD-II self-diagnostic item. Diagnostic trouble code “TCC SOLENOID/CIRC” with CONSULT-II or P0740 without CONSULT-II is detected under the following conditions. When TCM detects an improper voltage drop when it tries to operate the solenoid valve. Possible Cause ● ● Specification Lock-up “OFF” ACS00213 Torque converter clutch solenoid valve Harness or connectors (The solenoid circuit is open or shorted.) DTC Confirmation Procedure ACS00214 CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. 3. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II and wait at least 10 consecutive seconds. If DTC is detected, go to CVT-114, "Diagnostic Procedure" . SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-112 2003 Murano DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE Wiring Diagram - CVT - TCV ACS002T6 A B CVT D E F G H I J K L M TCWA0153E Revision; 2004 April CVT-113 2003 Murano DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE Remarks: Specification data are reference values. Terminal No. Wire color Item 3 L/W Torque converter clutch solenoid valve Condition When vehicle cruises in “D” position Judgement standard (Approx.) When CVT performs lock-up 6.0V When CVT does not perform lock-up 1.0V Diagnostic Procedure ACS00215 1. CHECK INPUT SIGNAL (WITH CONSULT-II) With CONSULT-II 1. Start engine. 2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “ISOLT1”. Monitor item ISOLT1 Condition When vehicle cruises in “D” position Specification Lock-up “OFF” Approximately 0.7A Lock-up “ON” Approximately 0.0A OK or NG OK >> GO TO 6. NG >> GO TO 3. SCIA2349E 2. CHECK INPUT SIGNAL (WITHOUT CONSULT-II) Without CONSULT-II 1. Start engine. 2. Check voltage between TCM connector and ground while warming up CVT. Refer to CVT-113, "Wiring Diagram - CVT - TCV" . Name Torque converter clutch solenoid valve Connector No. Terminal No. F103 3 (L/W) ground Voltage (V) (Approx.) Condition When vehicle cruises in “D” position Lock-up “OFF” 6.0 Lock-up “ON” 1.0 OK or NG OK >> GO TO 6. NG >> GO TO 3. SCIA1917E 3. CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector. Check resistance between terminals 3 and ground. Name Connector No. Terminal No. (Wire color) Resistance (Ω) (Approx.) Torque converter clutch solenoid valve F103 3 (L/W) - ground 3-9 4. 5. Disconnect the TCM connector. Check if there is continuity between the connector terminal and ground. OK or NG OK >> GO TO 6. NG >> GO TO 4. Revision; 2004 April CVT-114 SCIA1970E 2003 Murano DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE 4. CHECK THE HARNESS BETWEEN TCM AND TORQUE CONVERTER CLUTCH SOLENOID VALVE 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector and CVT unit harness connector. Check continuity between TCM connector and CVT unit harness connector. Item Connector No. Terminal No. (Wire color) F103 3 (L/W) F6 12 (L/W) TCM CVT unit harness connector A B CVT Continuity Yes D 4. 5. If OK, check harness for short to ground and short power. If OK, check continuity between body ground and CVT assembly. 6. Reinstall any part removed. OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. SCIA3701E F 5. CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE RESISTANCE 1. 2. 3. G Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. Solenoid Valve Torque converter clutch solenoid valve E H Connector No. Terminal No. Resistance (Ω) (Approx.) F6 12 - Ground 3-9 I J OK or NG OK >> GO TO 6. NG >> Repair or replace damaged parts. K SCIA2358E 6. CHECK DTC L Perform “DTC Confirmation Procedure”. Refer to CVT-112, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 6. M 7. PERFORM TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. Revision; 2004 April CVT-115 2003 Murano DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE Component Inspection ACS003KZ TORQUE CONVERTER CLUTCH SOLENOID VALVE 1. 2. 3. Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. Solenoid Valve Connector No. Terminal No. Resistance (Ω) (Approx.) Torque converter clutch solenoid valve F6 12 - Ground 3-9 4. If NG, replace transaxle assembly. Refer to CVT-197, "Removal and Installation" . SCIA2358E Revision; 2004 April CVT-116 2003 Murano DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) Description PFP:31940 A ACS001UG This malfunction is detected when the torque converter clutch does not lock-up as instructed by the TCM. This is not only caused by electrical malfunction (circuits open or shorted), but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc. CONSULT-II Reference Value ACS002T7 CVT Remarks: Specification data are reference values. Monitor item Condition Specification (Approximately) ENG SPEED SIG Engine running Closely matches the tachometer reading. PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed. On Board Diagnosis Logic ● ● – – ● D ACS001UH This is an OBD-II self-diagnostic item. Diagnostic trouble code “A/T TCC S/V FNCTN” with CONSULT-II or P0744 without CONSULT-II is detected under the following conditions. When CVT cannot perform lock-up even if electrical circuit is good. When TCM compares difference value with slip revolution and detects an irregularity. Possible Cause ● ACS001UI Torque converter clutch solenoid valve Hydraulic control circuit WITH CONSULT-II 4. G I J K Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following condition for at least 30 seconds. ACC PEDAL OPEN: More than 1.0/8 Selector lever: “D” position [Vehicle speed: Constant speed of more than 40 km/h (25 MPH)] If DTC is detected go to “Diagnostic Procedure”, CVT-118 . L M SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April F ACS001UJ CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. 3. E H DTC Confirmation Procedure 1. 2. B CVT-117 2003 Murano DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) Diagnostic Procedure ACS001UL 1. CHECK INPUT SIGNALS 1. 2. 3. 4. With CONSULT-II Start engine. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start vehicle. Check if there is a great difference between “ENG SPEED SIG” and “PRI SPEED SEN”. (Lock-up ON.) Monitor item Condition Specification (Approximately) ENG SPEED SIG Engine running Closely matches the tachometer reading. PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed. SCIA2279E OK or NG OK >> GO TO 5. NG >> GO TO 2. 2. CHECK LINE PRESSURE Perform line pressure test. Refer to CVT-57, "LINE PRESSURE TEST" . OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. Refer to CVT-58, "Judgement of Line Pressure Test" . 3. DETECT MALFUNCTIONING ITEM Check the following: ● Torque converter clutch solenoid valve. Refer to CVT-116, "Component Inspection" . ● Lock-up select solenoid valve. Refer to CVT-166, "Component Inspection" . OK or NG OK >> GO TO 4. NG >> Repair or replace damaged parts. 4. CHECK SECONDARY SPEED SENSOR SYSTEM AND PRIMARY SPEED SENSOR SYSTEM Check output speed sensor (secondary speed sensor) system and input speed sensor (primary speed sensor) system. Refer to CVT-101, "DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)" , CVT-95, "DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. 5. CHECK DTC Perform “DTC Confirmation Procedure”. Refer to CVT-117, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 6. Revision; 2004 April CVT-118 2003 Murano DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) 6. PERFORM TCM INSPECTION A 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> 1. Repair or replace damaged parts. 2. Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . B CVT D E F G H I J K L M Revision; 2004 April CVT-119 2003 Murano DTC P0745 LINE PRESSURE SOLENOID VALVE DTC P0745 LINE PRESSURE SOLENOID VALVE Description PFP:31940 ACS001UM The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM. CONSULT-II Reference Value Remarks: Specification data are reference values. Monitor item ISOLT2 ACS002T8 Condition Specification (Approximately) Release your foot from the accelerator pedal. 0.8A Press the accelerator pedal all the way down. 0.3 - 0.6A On Board Diagnosis Logic ● ● – – ACS001UN This is an OBD-II self-diagnostic item. Diagnostic trouble code “L/PRESS SOL/CIRC” with CONSULT-II or P0745 without CONSULT-II is detected under the following conditions. When TCM detects an improper voltage drop when it tries to operate the solenoid valve. When TCM compares target value with monitor value and detects an irregularity. Possible Cause ● ● ACS001UO Harness or connectors (The solenoid circuit is open or shorted.) Pressure control solenoid valve A (line pressure solenoid valve) DTC Confirmation Procedure ACS001UP NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. 3. Turn ignition switch “ON” and select “DATA MONITOR” mode for “ENGINE” with CONSULT-II. Start engine and wait at least 5 seconds. If DTC is detected, go to CVT-122, "Diagnostic Procedure" . SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-120 2003 Murano DTC P0745 LINE PRESSURE SOLENOID VALVE Wiring Diagram — CVT — LPSV ACS001UQ A B CVT D E F G H I J K L M TCWA0151E Revision; 2004 April CVT-121 2003 Murano DTC P0745 LINE PRESSURE SOLENOID VALVE Remarks: Specification data are reference values. Terminal No. 1 Wire color R/Y Item Condition Pressure control solenoid valve A (line pressure solenoid valve) Judgement standard (Approx.) Release your foot from the accelerator pedal. 5.0 - 7.0V Press the accelerator pedal all the way down. 1.0V Diagnostic Procedure ACS001UR 1. CHECK INPUT SIGNAL (WITH CONSULT-II) With CONSULT-II 1. After warming up the engine, turn ignition switch “ON” position (Do not start engine). 2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRASMISSION” with CONSULT-II. 3. Read out the value of “ISOLT2”. Item name Condition ISOLT2 Display value (Approx.) Release your foot from the accelerator pedal. 0.8A Press the accelerator pedal all the way down. 0.3 - 0.6A SCIA2349E OK or NG OK >> GO TO 6. NG >> GO TO 3. 2. CHECK INPUT SIGNAL (WITHOUT CONSULT-II) 1. 2. Without CONSULT-II After warming up the engine, turn ignition switch “ON” position (Do not start engine). Check voltage between TCM connector and ground. Name Pressure control solenoid valve A (line pressure solenoid valve) Connector No. F103 Terminal No. 1 (R/Y) ground Condition Voltage (Approx.) Release your foot from the accelerator pedal. 5.0 - 7.0V Press the accelerator pedal all the way down. 1.0V 3. 4. 5. Turn ignition switch “OFF”. Disconnect the TCM connector. Check if there is continuity between the connector terminal and ground. OK or NG OK >> GO TO 6. NG >> GO TO 3. Revision; 2004 April CVT-122 SCIA2348E 2003 Murano DTC P0745 LINE PRESSURE SOLENOID VALVE 3. CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE) CIRCUIT 1. 2. 3. Turn ignition switch “OFF”. Disconnect TCM connector. Check resistance between TCM connector terminal and ground. Solenoid Valve Terminal No. (Wire color) Resistance (Approx.) 1 (R/Y) - ground 3.0 - 9.0 Ω Connector No. Pressure control solenoid valve A (line pressure solenoid valve) F103 A B CVT D OK or NG OK >> GO TO 6. NG >> GO TO 4. SCIA1971E E 4. CHECK VALVE RESISTANCE 1. 2. 3. F Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. Solenoid Valve Connector No. Pressure control solenoid valve A (line pressure solenoid valve) Terminal No. G Resistance (Approx.) H F6 2 - Ground 3.0 - 9.0 Ω OK or NG OK >> GO TO 5. NG >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . I SCIA2030E J 5. CHECK THE HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE) 1. 2. 3. K Turn ignition switch “OFF”. Disconnect CVT unit harness connector and TCM connector. Check continuity between CVT unit harness connector and TCM connector. Item TCM CVT unit harness connector Connector No. Terminal No. (Wire color) F103 1 (R/Y) F6 2 (R/Y) M Continuity 4. 5. Yes If OK, check harness for short to ground and short to power. If OK, check continuity between body ground and CVT assembly. 6. Reinstall any part removed. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision; 2004 April L CVT-123 SCIA2031E 2003 Murano DTC P0745 LINE PRESSURE SOLENOID VALVE 6. CHECK DTC Check again. ● Refer to CVT-120, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 7. 7. CHECK TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> 1. Repair or replace damaged parts. 2. Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . Component Inspection ACS002T9 PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE) 1. 2. 3. Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. Solenoid Valve Pressure control solenoid valve A (line pressure solenoid valve) 4. Connector No. Terminal No. Resistance (Approx.) F6 2 - Ground 3.0 - 9.0 Ω If NG, replace transaxle assembly. Refer to CVT-197, "Removal and Installation" . SCIA2030E Revision; 2004 April CVT-124 2003 Murano DTC P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE SOLENOID VALVE) DTC P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE SOLENOID VALVE) PFP:31941 Description A ACS002IZ The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pres- B sure to suit the driving condition in response to a signal sent from the TCM. NOTE: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. CVT On Board Diagnosis Logic ● ● – ACS002J0 This is an OBD-II self-diagnostic item. Diagnostic trouble code “L/PRESS SOL/FNCTN” with CONSULT-II or P0746 without CONSULT-II is detected under the following conditions. Unexpected gear ratio was detected in the LOW side due to excessively low line pressure. Possible Cause ● ● ● Line pressure control system Output speed sensor (secondary speed sensor) Input speed sensor (primary speed sensor) F ACS002TA CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 10 consecutive seconds. Test start from 0km/h (0 MPH). ATF TEMP SEN: 1 - 2V ACC PEDAL OPEN: More than 1.0/8 Selector lever: D position VHCL SPEED: 10 km/h (6 MPH) More than Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test. H I K L M SCIA2272E If the check result is NG, go to “Diagnostic Procedure”, CVT-126 . SCIA5492E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April G J WITH CONSULT-II 2. E ACS002J1 DTC Confirmation Procedure 1. D CVT-125 2003 Murano DTC P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE SOLENOID VALVE) Diagnostic Procedure ACS002J3 1. CHECK INPUT SIGNAL (WITH CONSULT-II) With CONSULT-II 1. Start engine. 2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “PRI PRESS”. Monitor item Condition Specification PRI PRESS “ N” position idle 0.3 - 0.7MPa OK or NG OK >> GO TO 6. NG >> GO TO 3. 2. SCIA2366E CHECK INPUT SIGNAL (WITHOUT CONSULT-II) Without CONSULT-II 1. Start engine. 2. Check voltage between TCM connector and ground. Name Connector No. Terminal No. Condition Voltage (Approx.) Input speed sensor (primary pressure sensor) F104 41 (V/O) ground “ N” position idle 0.7 - 1.2V OK or NG OK >> GO TO 6. NG >> GO TO 3. SCIA1922E 3. CHECK LINE PRESSURE Perform line pressure test. Refer to CVT-57, "LINE PRESSURE TEST" . OK or NG OK >> GO TO 4. NG >> Repair or replace damaged parts. Refer to CVT-58, "Judgement of Line Pressure Test" . 4. DETECT MALFUNCTIONING ITEM Check the following: Pressure control solenoid valve A (line pressure solenoid valve). Refer to CVT-124, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. ● 5. CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM AND INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM Check output speed sensor (secondary speed sensor) system and input speed sensor (primary speed sensor) system. Refer to CVT-101, "DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)" , CVT-95, "DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)" . OK or NG OK >> GO TO 6. NG >> Repair or replace damaged parts. Revision; 2004 April CVT-126 2003 Murano DTC P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE SOLENOID VALVE) 6. DETECT MALFUNCTIONING ITEM A Check the following: ● Power supply and ground circuit for TCM. ● The TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> GO TO 7. NG >> Repair or replace damaged parts. B CVT 7. CHECK DTC Perform DTC Confirmation Procedure. ● Refer to CVT-125, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> Replace the transaxle assembly or TCM. Refer to CVT-197, "Removal and Installation" . D E F G H I J K L M Revision; 2004 April CVT-127 2003 Murano DTC P0776 PRESSURE CONTROL SOLENOID B PERFOMANCE (SEC PRESSURE SOLENOID VALVE) DTC P0776 PRESSURE CONTROL SOLENOID B PERFOMANCE (SEC PRESSURE SOLENOID VALVE) PFP:31941 Description ACS002J4 The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure to suit the driving condition in response to a signal sent from the TCM. NOTE: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. CONSULT-II Reference Value ACS002TB Remarks: Specification data are reference values. Monitor item Condition SEC PRESS Specification (Approximately) N position idle 0.5MPa On Board Diagnosis Logic ● ● ACS002TC This is an OBD-II self-diagnostic item. Diagnostic trouble code “SECONDARY PRESSURE SOLENOID VALVE FUNCTION” with CONSULT-II or P0776 without CONSULT-II is detected when secondary pressure is too high or too low compared with the commanded value while driving. Possible Cause ● ● ● ● ACS002J6 Harness or connectors (The solenoid circuit is open or shorted.) Pressure control solenoid valve B (secondary pressure solenoid valve system) Transmission pressure sensor A (secondary pressure sensor) Line pressure control system DTC Confirmation Procedure ACS002TD CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 30 consecutive seconds. ATF TEMP SEN: 1 - 2V ACC PEDAL OPEN: More than 1.0/8 Selector lever: D position VHCL SPEED: 10 km/h (6 MPH) More than Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test. Revision; 2004 April CVT-128 SCIA2272E 2003 Murano DTC P0776 PRESSURE CONTROL SOLENOID B PERFOMANCE (SEC PRESSURE SOLENOID VALVE) If the check result is NG, go to “Diagnostic Procedure”, CVT-129 . A B CVT SCIA5492E D WITH GST Follow the procedure “With CONSULT-II”. Diagnostic Procedure ACS002TE E 1. CHECK INPUT SIGNAL With CONSULT-II Start engine. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “SEC PRESS”. F 1. 2. Monitor item Condition Specification (Approximately) SEC PRESS N position idle 0.5MPa G H OK or NG OK >> GO TO 5. NG >> GO TO 2. I SCIA2366E 2. CHECK LINE PRESSURE J Perform line pressure test. Refer to CVT-57, "LINE PRESSURE TEST" . OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. Refer to CVT-58, "Judgement of Line Pressure Test" . K 3. DETECT MALFUNCTIONING ITEM L Check the following: ● Pressure control solenoid valve B (secondary pressure solenoid valve). Refer to CVT-134, "Component Inspection" . ● Pressure control solenoid valve A (line pressure solenoid valve). Refer to CVT-124, "Component Inspection" . OK or NG OK >> GO TO 4. NG >> Repair or replace damaged parts. 4. CHECK SECONDARY PRESSURE SENSOR SYSTEM Check transmission pressure sensor A (secondary pressure sensor) system. Refer to CVT-135, "DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR)" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. Revision; 2004 April CVT-129 2003 Murano M DTC P0776 PRESSURE CONTROL SOLENOID B PERFOMANCE (SEC PRESSURE SOLENOID VALVE) 5. DETECT MALFUNCTIONING ITEM Check the following: ● Power supply and ground circuit for TCM. ● The TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> GO TO 6. NG >> Repair or replace damaged parts. 6. CHECK DTC Perform DTC Confirmation Procedure. Refer to CVT-128, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . ● Revision; 2004 April CVT-130 2003 Murano DTC P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE SOLENOID VALVE) DTC P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE SOLENOID VALVE) PFP:31941 Description A ACS002J9 The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the oil pump discharge B pressure to suit the driving condition in response to a signal sent from the TCM. The secondary pressure duty cycle value is not consistent when the closed throttle position signal is “ON”. To confirm the secondary pressure duty cycle at low-pressure, the accelerator (throttle) should CVT be open until the closed throttle position signal is “OFF”. NOTE: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. D CONSULT-II Reference Value ACS002TF Remarks: Specification data are reference values. Monitor item ISOLT3 SOLMON3 Condition N position idle 0.6 - 0.7A When stalled 0.4 - 0.6A N position idle 0.6 - 0.7A When stalled 0.4 - 0.6A On Board Diagnosis Logic ● ● – – ● E F ACS002JA This is an OBD-II self-diagnostic item. Diagnostic trouble code “SEC/PRESS SOL/CIRC” with CONSULT-II or P0778 without CONSULT-II is detected under the following conditions. When TCM detects an improper voltage drop when it tries to operate the solenoid valve. When TCM compares target value with monitor value and detects an irregularity. Possible Cause ● Specification (Approximately) G H I ACS002JB Harness or connectors (The solenoid circuit is open or shorted.) Pressure control solenoid valve B (secondary pressure solenoid valve) DTC Confirmation Procedure J ACS002JC NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. K L WITH CONSULT-II 1. 2. 3. 4. M Turn ignition switch “ON”. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and wait at least 5 seconds. If DTC is detected, go to CVT-133, "Diagnostic Procedure" . SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-131 2003 Murano DTC P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE SOLENOID VALVE) Wiring Diagram — CVT — SECPSV ACS002TG TCWA0152E Revision; 2004 April CVT-132 2003 Murano DTC P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE SOLENOID VALVE) Remarks: Specification data are reference values. Terminal No. Wire color 2 W/B Item Condition Pressure control solenoid valve B (secondary pressure solenoid valve) Judgement standard (Approx.) Release your foot from the accelerator pedal. 5.0 - 7.0V B Press the accelerator pedal all the way down. 3.0 - 4.0V CVT Diagnostic Procedure ACS002TH 1. CHECK VALVE RESISTANCE 1. 2. 3. A Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. D E Solenoid Valve Connector No. Terminal No. Resistance (Approx.) F Pressure control solenoid valve B (secondary pressure solenoid valve) F6 3 - Ground 3.0 - 9.0 Ω G OK or NG OK >> GO TO 2. NG >> Repair or replace damaged parts. H SCIA2032E 2. CHECK POWER SOURCE CIRCUIT I 1. 2. 3. J Turn ignition switch “OFF”. Disconnect TCM connector and CVT unit harness connector. Check continuity between CVT unit harness connector and TCM connector. Item TCM connector CVT unit harness connector Connector No. Terminal No. (Wire color) F103 2 (W/B) F6 3 (W/B) K Continuity L Yes 4. If OK, check harness for short to ground and short to power. 5. Reinstall any part removed. OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. SCIA2033E M 3. CHECK DTC Check again. ● Refer to CVT-131, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 4. Revision; 2004 April CVT-133 2003 Murano DTC P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE SOLENOID VALVE) 4. CHECK TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> 1. Repair or replace damaged parts. 2. Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . Component Inspection ACS002TI PRESSURE CONTROL SORENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE) 1. 2. 3. Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. Solenoid Valve Connector No. Terminal No. Resistance (Approx.) Pressure control solenoid valve B (secondary pressure solenoid valve) F6 3 - Ground 3.0 - 9.0 Ω 4. If NG, replace transaxle assembly. Refer to CVT-197, "Removal and Installation" . SCIA2032E Revision; 2004 April CVT-134 2003 Murano DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) PFP:31936 Description A ACS002JM The transmission fluid pressure sensor A (secondary pressure sensor) detects secondary pressure of CVT B and sends TCM the signal. NOTE: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. CVT CONSULT-II Reference Value ACS002TJ Remarks: Specification data are reference values. Monitor item Condition SEC HYDR SEN N position idle SEC PRS During driving [40km/h (25 MPH)] 0.8V On Board Diagnosis Logic ● ● ● 0.4MPa E ACS002TK This is an OBD-II self-diagnostic item. Diagnostic trouble code “SEC PRS SEN/CIRC” with CONSULT-II or P0840 without CONSULT-II is detected when TCM detects an improper voltage drop when it tries to operate the sensor. Possible Cause ● D Specification (Approximately) ACS002JO Transmission fluid pressure sensor A (secondary pressure sensor) Harness or connectors (The switch circuit is open or shorted.) DTC Confirmation Procedure F G H ACS002JP CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. I J K WITH CONSULT-II 1. 2. 3. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Make sure that output voltage of line temperature sensor is within the range below. ATF TEMP SEN: 1 - 2V If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid) Start engine and wait for at least 5 consecutive seconds. If the check result is NG, go to “Diagnostic Procedure”, CVT-137, "Diagnostic Procedure" . L M SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April CVT-135 2003 Murano DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) Wiring Diagram - CVT - SECPS ACS002TL TCWA0155E Revision; 2004 April CVT-136 2003 Murano DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) Remarks: Specification data are reference values. Terminal No. Wire color Item V/W Transmission fluid pressure sensor A (secondary pressure sensor) 37 Condition Judgement standard (Approx.) A B N position idle 0.8V CVT Diagnostic Procedure ACS002JQ 1. CHECK INPUT SIGNAL With CONSULT-II Start engine. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “SEC HYDR SEN”. OK or NG OK >> GO TO 5. NG >> GO TO 2. D E 1. 2. F G H SCIA2279E 2. CHECK SENSOR POWER AND SENSOR GROUND 1. 2. I Turn ignition switch “ON”. (Do not start engine) Check voltage between TCM connector 46 and 42. Item J Connector No. Terminal No. (Wire color) Data (Approx.) F104 46 (L/O) - 42 (W/R) 5V TCM connector K OK or NG OK >> GO TO 4. NG >> GO TO 3. L SCIA2367E M Revision; 2004 April CVT-137 2003 Murano DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) 3. CHECK THE HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND) 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector and CVT unit harness connector. Check continuity between TCM connector and CVT unit harness connector. Connector No. Terminal No. (Wire color) F104 42 (W/R) CVT unit harness connector F6 19 (W/R) Item Connector No. Terminal No. (Wire color) F104 46 (L/O) Item TCM TCM CVT unit harness connector F6 Continuity Yes Continuity SCIA2340E Yes 20 (L/O) 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> Replace the TCM. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" . NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) CIRCUIT 1. 2. 3. Turn ignition switch “OFF”. Disconnect TCM connector and CVT unit harness connector. Check continuity between CVT unit harness connector and TCM connector. Item TCM CVT unit harness connector Connector No. Terminal No. (Wire color) F104 37 (V/W) F6 23 (V/W) Continuity Yes 4. If OK, check harness for short to ground and short to power. 5. Reinstall any part removed. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. SCIA2368E 5. CHECK DTC Perform DTC Confirmation Procedure. ● Refer to CVT-135, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 5. Revision; 2004 April CVT-138 2003 Murano DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) 6. PERFORM TCM INSPECTION A 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . NG >> Repair or replace damaged parts. B CVT D E F G H I J K L M Revision; 2004 April CVT-139 2003 Murano DTC P0841 PRESSURE SENSOR FUNCTION DTC P0841 PRESSURE SENSOR FUNCTION Description PFP:31936 ACS002TM Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signal, change the operating pressure of the primary pulley and the secondary pulley and change the groove width of the pulley to control the gear ratio. CONSULT-II Reference Value Remarks: Specification data are reference values. Monitor item PRI HYDR SEN SEC HYDR SEN ACS002TN Condition N position idle 0.7V - 1.2V During driving [40km/h (25 MPH)] 1.0V N position idle 0.8V During driving 0.7V On Board Diagnosis Logic ● ● ACS002JS This is not an OBD-II self-diagnostic item. Diagnostic trouble code “PRESS SEN/FNCTN” with CONSULT-II is detected when correlation between the values of the secondary pressure sensor and the primary pressure sensor is out of specification. Possible Cause ● ● ● Specification (Approximately) ACS002JT Transmission pressure sensor A (secondary pressure sensor) Transmission pressure sensor B (primary pressure sensor) Harness or connectors (The sensor circuit is open or shorted.) DTC Confirmation Procedure ACS002TO CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 12 consecutive seconds. VHCL SPEED: 40 km/h (25 MPH) More than Selector lever: D position SCIA2272E Revision; 2004 April CVT-140 2003 Murano DTC P0841 PRESSURE SENSOR FUNCTION If the check result is NG, go to “Diagnostic Procedure”, CVT-141 . A B CVT SCIA5492E D Diagnostic Procedure ACS002TP 1. CHECK CAN COMMUNICATION CIRCUIT E Perform the self-diagnosis. Is any malfunction of the “CAN COMM CIRCUIT” indicated? YES >> Refer to CVT-76, "DTC U1000 CAN COMMUNICATION LINE" . NO >> GO TO 2. F 2. CHECK INPUT SIGNAL (WITH CONSULT-II) G With CONSULT-II Start engine. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “SEC HYDR SEN” and “PRI HYDR SEN”. 1. 2. Monitor item PRI HYDR SEN H I Specification (Approximately) Condition N position idle J 0.7V - 1.2V During driving [40km/h (25 MPH)] 1.0V N position idle 0.8V During driving 0.7V SCIA2277E SEC HYDR SEN K OK or NG OK >> GO TO 7. NG >> GO TO 4. L 3. CHECK INPUT SIGNAL (WITHOUT CONSULT-II) M 1. 2. Without CONSULT-II Start engine. Check voltage between TCM connector and ground. Name Connector No. Transmission pressure sensor B (primary pressure sensor) Transmission pressure sensor A (secondary pressure sensor) Terminal No. Condition 41 (V/O) ground Voltage (Approx.) 0.7 - 1.2V “ N” position idle F104 37 (V/W) ground 0.8V OK or NG OK >> GO TO 7. NG >> GO TO 4. Revision; 2004 April SCIA1943E CVT-141 2003 Murano DTC P0841 PRESSURE SENSOR FUNCTION 4. CHECK LINE PRESSURE Perform line pressure test. Refer to CVT-57, "LINE PRESSURE TEST" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. Refer to CVT-58, "Judgement of Line Pressure Test" . 5. CHECK TRANSMISSION PRESSORE SENSOR A (SECONDARY PRESSURE SENSOR) SYSTEM AND TRANSMISSION PRESSURE SENSOR B (PRIMARY PRESSURE SENSOR) SYSTEM Check secondary pressure sensor system and primary pressure sensor system. Refer to CVT-135, "DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR)" , CVT-143, "DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR)" . OK or NG OK >> GO TO 6. NG >> Repair or replace damaged parts. 6. DETECT MALFUNCTIONING ITEM Check the following: ● Line pressure solenoid valve. Refer to CVT-124, "Component Inspection" . ● Secondary pressure solenoid valve. Refer to CVT-134, "Component Inspection" . ● Step motor. Refer to CVT-172, "Component Inspection" . OK or NG OK >> GO TO 7. NG >> Repair or replace damaged parts. 7. CHECK DTC Perform DTC Confirmation Procedure. Refer to CVT-140, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> Replace the TCM or transaxle assembly. Refer to CVT-197, "Removal and Installation" . ● Revision; 2004 April CVT-142 2003 Murano DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR) DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR) PFP:31936 Description A ACS002TQ The primary pressure sensor detects primary pressure of CVT and sends TCM the signal. NOTE: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card. B CVT CONSULT-II Reference Value Remarks: Specification data are reference values. Monitor item ACS002TR Condition N position idle PRI HYDR SEN ● – – During driving [40 km/h (25 MPH)] ● 1.0V ACS002TS This is an OBD-II self-diagnostic item. Diagnostic trouble code “PRI PRS SEN/CIRC” with CONSULT-II or P0845 without CONSULT-II is detected under the following conditions. When TCM detects an improper voltage drop when it tries to operate the sensor. When TCM compares target value with monitor value and detects an irregularity. Possible Cause ● D 0.7 - 1.2V On Board Diagnosis Logic ● Specification (Approximately) Transmission fluid pressure sensor B (primary pressure sensor) Harness or connectors (The sensor circuit is open or shorted.) ACS002TU WITH CONSULT-II 3. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Make sure that output voltage of line temperature sensor is within the range below. ATF TEMP SEN: 1 - 2V If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid). Start engine and wait for at least 5 consecutive seconds. If the check result is NG, go to “Diagnostic Procedure”, CVT-145 . J K M SCIA2272E Follow the procedure “With CONSULT-II”. CVT-143 I L WITH GST Revision; 2004 April G H CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. 2. F ACS002TT DTC Confirmation Procedure 1. E 2003 Murano DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR) Wiring Diagram - CVT - PRIPS ACS002TV TCWA0157E Revision; 2004 April CVT-144 2003 Murano DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR) Remarks: Specification data are reference values. Terminal No. Wire color 41 Item Condition N position idle 0.7 - 1.2V CVT Diagnostic Procedure ACS002TW 1. CHECK INPUT SIGNAL (WITH CONSULT-II) With CONSULT-II Start engine. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “PRI HYDR SEN”. PRI HYDR SEN F Specification (Approximately) Condition N position idle D E 1. 2. Monitor item A B Transmission fluid pressure sensor B (primary pressure sensor) V/O Judgement standard (Approx.) G 0.7V - 1.2V During driving [40 km/h (25 MPH)] 1.0V H OK or NG OK >> GO TO 6. NG >> GO TO 3. SCIA2277E I 2. CHECK INPUT SIGNAL (WITHOUT CONSULT-II) 1. 2. Without CONSULT-II Start engine. Check voltage between TCM connector and ground. J K Name Transmission fluid pressure sensor B (primary pressure sensor) Connector No. Terminal No. Condition Voltage (Approx.) F104 41 (V/O) ground “ N” position idle 0.7 - 1.2V L M OK or NG OK >> GO TO 6. NG >> GO TO 3. SCIA4509E 3. CHECK SENSOR POWER AND SENSOR GROUND 1. 2. Turn ignition switch “ON”. (Do not start engine) Check voltage between TCM connector 46 and 42. Item Connector No. Terminal No. (Wire color) Data (Approx.) F104 46 (L/O) - 42 (W/R) 5V TCM connector OK or NG OK >> GO TO 5. NG >> GO TO 4. SCIA2367E Revision; 2004 April CVT-145 2003 Murano DTC P0845 TRANSMISSION FLUID PRESSURE SENSOR B CIRCUIT (PRI PRESSURE SENSOR) 4. CHECK THE HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND) 1. 2. 3. Turn ignition switch “OFF”. Disconnect the TCM connector and CVT unit harness connector. Check continuity between TCM connector and CVT unit harness connector. Connector No. Terminal No. (Wire color) F104 42 (W/R) CVT unit harness connector F6 19 (W/R) Item Connector No. Terminal No. (Wire color) F104 46 (L/O) Item TCM TCM CVT unit harness connector F6 Continuity Yes Continuity SCIA2340E Yes 20 (L/O) 4. If OK, check harness for short to ground and short power. 5. Reinstall any part removed. OK or NG OK >> Replace the TCM. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" . NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK TRANSMISSION FLUID PRESSURE SENSOR B (PRIMARY PRESSURE SENSOR) CIRCUIT 1. 2. 3. Turn ignition switch “OFF”. Disconnect TCM connector. Check continuity between CVT unit harness connector and TCM connector. Item TCM CVT unit harness connector Connector No. Terminal No. (Wire color) F104 41 (V/O) F6 25 (V/O) Continuity Yes 4. If OK, check harness for short to ground and short to power. 5. Reinstall any part removed. OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. SCIA2037E 6. CHECK DTC Perform DTC Confirmation Procedure. ● Refer to CVT-143, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 7. 7. PERFORM TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . NG >> Repair or replace damaged parts. Revision; 2004 April CVT-146 2003 Murano DTC P0868 SECONDARY PRESSURE DOWN DTC P0868 SECONDARY PRESSURE DOWN Description PFP:31941 A ACS002TX The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure to suit the driving condition in response to a signal sent from the TCM. The secondary pressure duty cycle value is not consistent when the closed throttle position signal is “ON”. To confirm the secondary pressure duty cycle at low-pressure, the accelerator (throttle) should be open until the closed throttle position signal is “OFF”. CONSULT-II Reference Value Specification (Approximately) N position idle ● ACS002TZ This is not an OBD-II self-diagnostic item. Diagnostic trouble code “SEC/PRESS DOWN” with CONSULT-II is detected when secondary fluid pressure is too low compared with the commanded value while driving. Possible Cause ● ● ● ● D 0.5MPa On Board Diagnosis Logic ● CVT ACS002TY Remarks: Specification data are reference values. Monitor item Condition SEC PRESS B E F ACS002U0 Harness or connectors (The solenoid circuit is open or shorted.) Pressure control solenoid valve B (secondary pressure solenoid valve) system Transmission pressure sensor A (secondary pressure sensor) Line pressure control system DTC Confirmation Procedure G H ACS002U1 CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. I J K WITH CONSULT-II 1. 2. 3. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Make sure that output voltage of CVT fluid temperature sensor is within the range below. FLUID TEMP SEN: 1.0 - 2.0V If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid) Start engine and maintain the following conditions for at least 10 consecutive seconds. VEHICLE SPEED (accelerate slowly): 0 → 50km/h (31 MPH) ACC PEDAL OPEN: 0.5/8 - 1.0/8 Selector lever: D position Revision; 2004 April CVT-147 L M SCIA2272E 2003 Murano DTC P0868 SECONDARY PRESSURE DOWN If the check result is NG, go to CVT-148, "Diagnostic Procedure" . SCIA5492E Diagnostic Procedure ACS002U2 1. CHECK INPUT SIGNAL With CONSULT-II 1. Start engine. 2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Start vehicle and read out the value of “SEC PRESS”. OK or NG OK >> GO TO 5. NG >> GO TO 2. SCIA2366E 2. CHECK LINE PRESSURE Perform line pressure test. Refer to CVT-57, "LINE PRESSURE TEST" . OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. Refer to CVT-58, "Judgement of Line Pressure Test" . 3. DETECT MALFUNCTIONING ITEM Check the following: ● Pressure control solenoid valve B (secondary pressure solenoid valve). Refer to CVT-134, "Component Inspection" . ● Pressure control solenoid valve A (line pressure solenoid valve). Refer to CVT-124, "Component Inspection" . OK or NG OK >> GO TO 4. NG >> Repair or replace damaged parts. 4. CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYSTEM Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to CVT-135, "DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR)" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. Revision; 2004 April CVT-148 2003 Murano DTC P0868 SECONDARY PRESSURE DOWN 5. DETECT MALFUNCTIONING ITEM A Check the following: ● Power supply and ground circuit for TCM. ● The TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> GO TO 6. NG >> Repair or replace damaged parts. B CVT 6. CHECK DTC D Perform DTC Confirmation Procedure. ● Refer to CVT-147, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . E F G H I J K L M Revision; 2004 April CVT-149 2003 Murano DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY) DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY) Description PFP:31036 ACS006C5 When the power supply to the TCM is cut “OFF”, for example because the battery is removed, and the selfdiagnostics memory function stops, malfunction is detected. NOTE: Since “TCM-POWER SUPPLY” will be indicated when replacing TCM, perform diagnosis after erasing “SELF-DIAG RESULTS” On Board Diagnosis Logic ● ● ● ACS006C6 This is not an OBD-II self-diagnostic item. Diagnostic trouble code “TCM-POWER SUPPLY” with CONSULT-II is detected when TCM does not receive the voltage signal from the battery power supply. This is not a malfunction message. (Whenever shutting “OFF” a power supply to the TCM, this message appears on the screen.) Possible Cause ACS006C7 Harness or connectors (Battery or ignition switch and TCM circuit is open or shorted.) DTC Confirmation Procedure ACS006C8 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. After the repair, perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch ON. (Do not start engine.) Turn ignition switch ON and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Wait for at least 2 consecutive seconds. If DTC is detected, go to CVT-152, "Diagnostic Procedure" . SCIA4825E Revision; 2004 April CVT-150 2003 Murano DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY) Wiring Diagram — CVT — POWER ACS006C9 A B CVT D E F G H I J K L M TCWB0005E Revision; 2004 April CVT-151 2003 Murano DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY) TCM terminals and data are reference values, measured between each terminal and ground. Terminal Wire color 10 19 Y/L Item Condition Data (Approx.) – Battery voltage – 0V – Battery voltage – 0V Power supply Y/L Power supply 25 B Ground 28 Y/R 48 B – Power supply (memory back-up) Always Ground – Diagnostic Procedure – Battery voltage – ACS006CA 1. CHECK DTC 1. 2. Turn ignition switch ON. (Do not start engine.) Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-II. 3. Erase self-diagnostic results. Refer to CVT-47, "HOW TO ERASE DTC (WITH CONSULT-II)" . 4. Turn ignition switch OFF, and wait for 5 seconds or more. 5. Start engine. 6. Confirm self-diagnostic results again. Refer to CVT-66, "CONSULT-II" . Is the “TCM-POWER SUPPLY” displayed? YES >> GO TO 2. NO >> INSPECTION END SCIA5492E 2. CHECK TCM POWER SOURCE, STEP 1 1. 2. Turn ignition switch OFF. Check voltage between TCM connector terminal and ground. Name Connector Terminal (Wire color) Condition Voltage (Approx.) Power supply (memory backup) F104 28 (Y/R) Ground Always Battery voltage OK or NG OK >> GO TO 3. NG >> GO TO 4. Revision; 2004 April SCIA4783E CVT-152 2003 Murano DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY) 3. CHECK TCM POWER SOURCE, STEP 2 1. 2. A Turn ignition switch ON. (Do not start engine.) Check voltage between TCM connector terminal and ground. B Name Connector Terminal (Wire color) Voltage (Approx.) Condition CVT Battery voltage 10 (Y/L) Ground Power supply D 0V SCIA4784E F103 E Battery voltage 19 (Y/L) Ground Power supply F 0V Power supply (memory back-up) F104 28 (Y/R) Ground G Battery voltage Always OK or NG OK >> GO TO 5. NG >> GO TO 4. H 4. DETECT MALFUNCTIONING ITEM I Check the following items: ● Harness for short or open between battery and TCM connector terminal 28 ● Harness for short or open between ignition switch and TCM connector terminal 10, 19 ● 10A fuse (No19, located in the fuse block) ● 10A fuse (No71, located in the IPDM E/R) ● Ignition switch. Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. K 5. CHECK TCM GROUND CIRCUIT M 1. 2. 3. J L Turn ignition switch OFF. Disconnect TCM connector. Check continuity between TCM connector terminal and ground. Name Connector Ground F104 Terminal (Wire color) Continuity 25 (B) 48 (B) Yes OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. Revision; 2004 April CVT-153 SCIA2671E 2003 Murano DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY) 6. CHECK DTC Check again. Refer to CVT-150, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 7. 7. CHECK TCM 1. Check TCM input/output signal. Refer to CVT-63, "TCM Input/Output Signal Reference Values" . 2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. Revision; 2004 April CVT-154 2003 Murano DTC P1705 THROTTLE POSITION SENSOR DTC P1705 THROTTLE POSITION SENSOR Description PFP:22620 A ACS001VE Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor etc. The actuator sends a signal to the ECM, and ECM sends signals to TCM with CAN communication. On Board Diagnosis Logic ● ● ACS001VF This is not an OBD-II self-diagnostic item. Diagnostic trouble code “TP SEN/CIRC A/T” with CONSULT-II is detected when TCM does not receive the proper accelerator pedal position signals (input by CAN communication) from ECM. Possible Cause ● ● B CVT D ACS001VG ECM Harness or connectors (CAN communication line is open or shorted.) DTC Confirmation Procedure E ACS001VH NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, perform the following procedure to confirm the malfunction is eliminated. F G WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. In fully depressed and fully released conditions, wait for 5 seconds. If DTC is detected, go to CVT-155, "Diagnostic Procedure" . H I J SCIA2272E Diagnostic Procedure ACS001VI 1. CHECK CAN COMMUNICATION LINE L Perform the self-diagnosis. Is any malfunction of the “CAN COMM CIRCUIT” indicated? YES >> Check the CAN communication line. Refer to CVT-76, "DTC U1000 CAN COMMUNICATION LINE" . NO >> GO TO 2. Revision; 2004 April K CVT-155 2003 Murano M DTC P1705 THROTTLE POSITION SENSOR 2. CHECK INPUT SIGNAL With CONSULT-II Turn ignition switch “ON”. (Do not start engine.) Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Read out the value of “ACC PEDAL OPEN”. 1. 2. Condition Specification (Approximately) Release your foot from the accelerator pedal. ↓ Press the accelerator pedal all the way down. 0.0/8 ↓ 8/8 Monitor item ACC PEDAL OPEN SCIA2277E OK or NG OK >> GO TO 4. NG >> GO TO 3. 3. CHECK DTC WITH ECM With CONSULT-II Turn ignition switch “ON”. (Do not start engine.) Select “SELF-DIAG RESULTS” mode for “ENGINE” with CONSULT-II. Refer to EC-125, "CONSULT-II Function" . OK or NG OK >> GO TO 4. NG >> Check the DTC Detected Item. Go to EC-125, "CONSULT-II Function" . 1. 2. SCIA2272E 4. CHECK DTC Check again. ● Refer to CVT-155, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. Revision; 2004 April CVT-156 2003 Murano DTC P1722 ESTM VEHICLE SPEED SIGNAL DTC P1722 ESTM VEHICLE SPEED SIGNAL Description PFP:47660 A ACS002K6 The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM by CAN communication line. On Board Diagnosis Logic ● ● ACS002K7 This is not an OBD-II self-diagnostic item. CVT Diagnostic trouble code “ESTM VEH SPD SIG” with CONSULT-II is detected when TCM does not receive the proper vehicle speed signal (input by CAN communication) from ABS actuator and electric unit (control unit). D Possible Cause ● ● B ACS002K8 Harness or connectors (The sensor circuit is open or shorted.) ABS actuator and electric unit (control unit) E DTC Confirmation Procedure ACS002K9 CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. F G H WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 5 consecutive seconds. ACCELE POS: 1/8 or less VHCL SPEED SE: 30 km/h (17 MPH) or more If DTC is detected, go to CVT-157, "Diagnostic Procedure" . I J K SCIA2272E Diagnostic Procedure ACS002KA 1. CHECK CAN COMMUNICATION LINE M Perform the self-diagnosis. Is a malfunction in the CAN communication indicated in the results? Is any malfunction of the “CAN COMM CIRCUIT” indicated? YES >> Check CAN communication line. Refer to CVT-76, "DTC U1000 CAN COMMUNICATION LINE" . NO >> GO TO 2. 2. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to BRC-40, "Control Unit Input/Output Signal Standard" , BRC-109, "Control Unit Input/Output Signal Standard" . OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. Revision; 2004 April L CVT-157 2003 Murano DTC P1722 ESTM VEHICLE SPEED SIGNAL 3. CHECK INPUT SIGNAL With CONSULT-II Start engine. Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Drive vehicle and read out the value of “VEHICLE SPEED” and “ESTM VSP SIG”. 4. Check if there is a great difference between the two values. OK or NG OK >> GO TO 5. NG >> GO TO 4. 1. 2. SCIA2279E 4. CHECK TCM Perform TCM input/output signal inspection. Refer to CVT-63, "TCM Input/Output Signal Reference Values" . OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. 5. CHECK DTC Perform DTC Confirmation Procedure. Refer to CVT-157, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 2. ● Revision; 2004 April CVT-158 2003 Murano DTC P1723 CVT SPEED SENSOR FUNCTION DTC P1723 CVT SPEED SENSOR FUNCTION Description PFP:31907 A ACS002KB The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)] detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. The pulse signal is sent to the TCM, which converts it into vehicle speed. The input speed sensor (primary speed sensor) detects the primary pulley revolution speed and sends a signal to the TCM. On Board Diagnosis Logic B CVT ACS002U3 This is not an OBD-II self-diagnostic item. ● Diagnostic trouble code “CVT SPD SEN/FNCTN” with CONSULT-II is detected when there is a great difference between the vehicle speed signal and the secondary speed sensor signal. CAUTION: One of the “secondary rotation”, the “primary rotation or the “engine speed“ is displayed at the same time. ● Possible Cause ● ● ● ● ACS002KD Harness or connectors (The sensor circuit is open or shorted.) Output speed sensor (secondary speed sensor) Input speed sensor (primary speed sensor) Engine speed signal system ACS002U4 I J K WITH CONSULT-II Turn ignition switch “ON” and select “DATA MONITOR” mode for “ENGINE” with CONSULT-II. Start engine and maintain the following conditions for at least 5 consecutive seconds. VHCL SPEED SE: 10 km/h (6 MPH) or more THRTL POS SEN: More than 1.2V Selector lever: D position ENG SPEED: 450 rpm or more Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test. Revision; 2004 April F G CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. 2. E H DTC Confirmation Procedure 1. D CVT-159 L M SCIA2272E 2003 Murano DTC P1723 CVT SPEED SENSOR FUNCTION If the check result is NG, go to CVT-160, "Diagnostic Procedure" . SCIA5492E Diagnostic Procedure ACS002KF 1. CHECK STEP MOTOR FUNCTION Perform the self-diagnosis. Refer to CVT-70, "SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)" . Is a malfunction in the step motor function indicated in the results? YES >> Repair or replace damaged parts. (Check the step motor function. Refer to CVT-173, "DTC P1778 STEP MOTOR - FUNCTION" .) NO >> GO TO 2. 2. CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR SYSTEM) AND INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM Check secondary speed sensor system and primary speed sensor system. Refer to CVT-101, "DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)" , CVT-95, "DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)" . OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. 3. CHECK ENGINE SPEED SIGNAL SYSTEM Check engine speed signal system. Refer to CVT-108, "DTC P0725 ENGINE SPEED SIGNAL" . OK or NG OK >> GO TO 4. NG >> Repair or replace damaged parts. Refer to EC-596, "IGNITION SIGNAL" . 4. DETECT MALFUNCTIONING ITEM Check the following: ● Power supply and ground circuit for TCM. ● The TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> GO TO 5. NG >> Repair or replace damaged parts. 5. CHECK DTC Perform DTC Confirmation Procedure. Refer to CVT-159, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> Replace the TCM or transaxle assembly. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" , CVT-197, "Removal and Installation" . ● Revision; 2004 April CVT-160 2003 Murano DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM Description PFP:23710 A ACS002KG Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor etc. The actuator sends a signal to the ECM, and ECM sends signals to TCM with CAN communication. On Board Diagnosis Logic ● ● B ACS002U5 This is not an OBD-II self-diagnostic item. Diagnostic trouble code “ELEC TH CONTROL·” with CONSULT-II is detected when the electronically controlled throttle for ECM is malfunctioning. Possible Cause CVT D ACS002KI Harness or connectors (The sensor circuit is open or shorted.) E DTC Confirmation Procedure ACS002KJ NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. F G WITH CONSULT-II 1. 2. 3. 4. Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and let it idle for 5 second. If DTC is detected, go to CVT-161, "Diagnostic Procedure" . H I J SCIA2272E Diagnostic Procedure ACS002KK 1. CHECK DTC WITH ECM L With CONSULT-II 1. Turn ignition switch “ON”. (Do not start engine.) 2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CONSULT-II. Refer to EC-125, "CONSULT-II Function" . OK or NG OK >> GO TO 2. NG >> Check the DTC Detected Item. Refer to EC-125, "CONSULT-II Function" . ● If CAN communication line is detected, go to CVT-76, "DTC U1000 CAN COMMUNICATION LINE" . M SCIA2272E Revision; 2004 April K CVT-161 2003 Murano DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM 2. CHECK DTC Perform DTC Confirmation Procedure. ● Refer to CVT-161, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 3. 3. DETECT MALFUNCTIONING ITEM Check the following: ● The TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> Replace the TCM. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" . NG >> Repair or replace damaged parts. Revision; 2004 April CVT-162 2003 Murano DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT Description PFP:31941 A ACS002U6 Lock-up select solenoid valve switches, which controls lock-up clutch pressure or forward clutch pressure (reverse brake pressure). When controlling lock-up clutch, turns OFF. When controlling forward clutch, turns ON. ● ● CONSULT-II Reference Value Item name LUSEL SOL OUT ACS002KM Condition Display value N position ON Wait at least for 5 seconds with the selector lever in D position OFF On Board Diagnosis Logic ● ● – ● ● This is an OBD-II self-diagnostic item. Diagnostic trouble code “LU-SLCT SOL/CIRC” with CONSULT-II or P1740 without CONSULT-II is detected under the following conditions. When TCM compares target value with monitor value and detects an irregularity. ACS002KO Lock-up select solenoid valve Harness or connectors (The solenoid circuit is open or shorted.) Turn ignition switch “ON”. (Do not start engine.) Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 5 consecutive seconds. SELECTOR LEVER: “D” position and “N” position (At each time, wait for 5 seconds.) If DTC is detected, go to CVT-165, "Diagnostic Procedure" . I J L M SCIA2272E WITH GST Follow the procedure “With CONSULT-II”. Revision; 2004 April G K WITH CONSULT-II 4. F ACS002U7 CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 10 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. 3. E H DTC Confirmation Procedure 1. 2. CVT D ACS002KN Possible Cause B CVT-163 2003 Murano DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT Wiring Diagram - CVT - L/USSV ACS002U8 TCWA0154E Revision; 2004 April CVT-164 2003 Murano DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT Remarks: Specification data are reference values. Terminal No. Wire color Item Condition Judgement standard (Approx.) Battery voltage L/Y Lock-up select solenoid valve N position 4 Wait at least for 5 seconds with the selector lever in D position. Diagnostic Procedure B 0V ACS002U9 1. CHECK VALVE RESISTANCE 1. 2. 3. CVT Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. Solenoid Valve D Connector No. Terminal No. Resistance (Approx.) F6 13 - Ground 6.0 - 19.0 Ω Lock-up select solenoid valve A E F OK or NG OK >> GO TO 2. NG >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . G SCIA2038E 2. CHECK POWER SOURCE CIRCUIT 1. 2. 3. H Turn ignition switch “OFF”. Disconnect TCM connector. Check continuity between CVT unit harness connector and TCM connector. Item TCM CVT unit harness connector Connector No. Terminal No. (Wire color) F103 4 (L/Y) F6 13 (L/Y) I J Continuity Yes 4. If OK, check harness for short to ground and short to power. 5. Reinstall any part removed. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. K SCIA2039E L M 3. CHECK DTC Check again. ● Refer to CVT-163, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 4. 4. PERFORM TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> 1. Repair or replace damaged parts. 2. Replace the TCM. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" . Revision; 2004 April CVT-165 2003 Murano DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT Component Inspection ACS002UA LOCK-UP SELECT SOLENOID VALVE 1. 2. 3. Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminal and ground. Solenoid Valve Lock-up select solenoid valve 4. Connector No. Terminal No. Resistance (Approx.) F6 13 - Ground 6.0 - 19.0 Ω If NG, replace transaxle assembly. Refer to CVT-197, "Removal and Installation" . SCIA2038E Revision; 2004 April CVT-166 2003 Murano DTC P1745 LINE PRESSURE CONTROL DTC P1745 LINE PRESSURE CONTROL Description PFP:31036 A ACS002KR The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM. On Board Diagnosis Logic ● ● ACS002UB This is not an OBD-II self-diagnostic item. CVT Diagnostic trouble code “L/PRESS CONTROL” with CONSULT-II is detected when TCM detects the unexpected line pressure. Possible Cause ● ACS002KT D ACS002UC E TCM DTC Confirmation Procedure CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. 2. B F G H Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Make sure that output voltage of CVT fluid temperature sensor is within the range below. FLUID TEMP SEN: 1.0 - 2.0V If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid) If the check result is NG, go to “Diagnostic Procedure”, CVT-167 . I J K SCIA2272E Diagnostic Procedure ACS002UD 1. CHECK DTC 1. 2. 3. Turn ignition switch “ON”. (Do not start engine.) Select SELF-DIAG RESULTS item at SELECT DIAG MODE. Erase self-diagnostic results. Refer to CVT-47, "HOW TO ERASE DTC (WITH CONSULT-II)" . 4. Turn ignition switch OFF, and wait for 5 seconds or more. 5. Start engine. 6. Confirm self-diagnostic results again. Refer to CVT-71, "SelfDiagnostic Result Test Mode" . Is the line pressure control displayed? YES >> Replace the TCM. Refer to CVT-8, "Precautions for TCM and CVT Assembly Replacement" . NO >> INSPECTION END Revision; 2004 April CVT-167 L M SCIA5492E 2003 Murano DTC P1777 STEP MOTOR - CIRCUIT DTC P1777 STEP MOTOR - CIRCUIT Description ● PFP:31020 ACS00216 The step motor changes the step with turning 4 coils ON/OFF according to the signal from TCM. As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled. CONSULT-II Reference Value Remarks: Specification data are reference values. Monitor item ACS0032M Condition STM STEP -20 step - 190 step SMCOIL A SMCOIL B Changes ON⇔OFF. The vehicle runs a safe condition and press/depress accelerator pedal. ● – Changes ON⇔OFF. SMCOIL D Changes ON⇔OFF. ACS0032N This is an OBD-II self-diagnostic item. Diagnostic trouble code “STEP MOTOR/CIRC” with CONSULT-II or P1777 without CONSULT-II is detected under the following conditions. When in operating step motor ON and OFF, there is no proper change in the voltage of the terminal TCM which corresponds to it. Possible Cause ● ● Changes ON⇔OFF. SMCOIL C On Board Diagnosis Logic ● Specification ACS0032O Step motor Harness or connectors (The step motor circuit is open or shorted.) DTC Confirmation Procedure ACS0032P CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 1. Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANMISSION” with CONSULT-II. SCIA2272E Revision; 2004 April CVT-168 2003 Murano DTC P1777 STEP MOTOR - CIRCUIT 2. Drive vehicle for at least 5 consecutive seconds. If the check result is “NG”, go to CVT-171, "Diagnostic Procedure" . A B CVT SCIA5492E D WITH GST Follow the procedure “With CONSULT-II”. E F G H I J K L M Revision; 2004 April CVT-169 2003 Murano DTC P1777 STEP MOTOR - CIRCUIT Wiring Diagram — CVT — STM ACS00217 TCWA0158E Revision; 2004 April CVT-170 2003 Murano DTC P1777 STEP MOTOR - CIRCUIT Remarks: Specification data are reference values. Terminal No. Wire color 11 G/R 12 O/B 20 R 21 R/G Item Condition Step motor Within 2 seconds after key switch “ON”, check the time measurement by using the pulse width measurement function (Hi level) of CONSULT-II. Judgement standard (Approx.) A 30.0 msec B 10.0 msec ● CONSULT-II cable connect to data link connector. 30.0 msec ● This inspection cannot be measured by circuit tester. 10.0 msec Diagnostic Procedure CVT ACS00218 1. CHECK INPUT SIGNAL D With CONSULT-II 1. Start engine. 2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Vehicle start and read out the value of “STM STEP”, “SMCOIL A”, “SMCOIL B”, “SMCIOL C”, and “SMCOIL D”. OK or NG OK >> GO TO 4. NG >> GO TO 2. E F G 2. CHECK STEP MOTOR CIRCUIT 1. 2. 3. H Turn ignition switch “OFF”. Disconnect CVT unit connector and TCM connector. Check continuity between CVT unit harness connector and TCM connector. Item Connector No. Terminal No. (Wire color) F103 11 (G/R) F6 6 (G/R) F103 12 (O/B) F6 7 (O/B) F103 20 (R) F6 8 (R) F103 21 (R/G) F6 9 (R/G) TCM CVT unit harness connector TCM CVT unit harness connector TCM CVT unit harness connector TCM CVT unit harness connector I Continuity J Yes K Yes Yes SCIA3704E L Yes M 4. If OK, check harness for short to ground and short to power. 5. If OK, check continuity between body ground and CVT assembly. 6. Reinstall any part removed. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 3. CHECK STEP MOTOR Check step motor Refer to CVT-172, "Component Inspection" . OK or NG OK >> GO TO 4. NG >> Repair or replace damaged parts. Revision; 2004 April CVT-171 2003 Murano DTC P1777 STEP MOTOR - CIRCUIT 4. CHECK DTC Check again. ● Refer to CVT-168, "DTC Confirmation Procedure" . OK or NG OK >> INSPECTION END NG >> GO TO 5. 5. CHECK TCM INSPECTION 1. Perform TCM input/output signal inspection. 2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector. OK or NG OK >> INSPECTION END NG >> Repair or replace damaged parts. Component Inspection ACS00219 STEP MOTOR 1. 2. 3. Turn ignition switch “OFF”. Disconnect CVT unit harness connector. Check resistance between terminals. Control valve Connector No. Terminal No. 6-7 Resistance (Approx.) 30Ω 8-9 Step motor F6 6 - Ground 7 - Ground 15Ω 8 - Ground SCIA2040E 9 - Ground 4. If NG, replace transaxle assembly. Refer to CVT-197, "Removal and Installation" . Revision; 2004 April CVT-172 2003 Murano DTC P1778 STEP MOTOR - FUNCTION DTC P1778 STEP MOTOR - FUNCTION Description ● ● ● PFP:31947 A ACS0021D The step motor's 4 aspects of ON/OFF change according to the signal from TCM. As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled. B This diagnosis item detects when electrical system is OK, but mechanical system is NG. This diagnosis item detects when the state of the changing the speed mechanism in unit does not operate normally. CVT CONSULT-II Reference Value ACS0032Q Remarks: Specification data are reference values. Monitor item Condition STM STEP GEAR RATIO The vehicle runs a safe condition and press/depress accelerator pedal. On Board Diagnosis Logic ● ● – -20 step - 190 step 2.37 - 0.43 E ACS0032R This is an OBD-II self-diagnostic item. Diagnostic trouble code “STEP MOTOR/FNCTN” with CONSULT-II or P1778 without CONSULT-II is detected under the following conditions. When not changing the pulley ratio according to the instruction of TCM. Possible Cause ● D Specification (Approximately) Step motor H ACS0032T CAUTION: ● Always drive vehicle at a safe speed. ● Be careful not to rev engine into the red zone on the tachometer. ● Before starting “DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE”, confirm “Hi” or “Mid” or “Low” fixation by “PRI SPEED” and “VEHICLE SPEED” on “DATA MONITOR MODE”. ● If hi-geared fixation, go to diagnostic procedure soon. NOTE: If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF” and wait at least 5 seconds before performing the next test. After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to confirm the malfunction is eliminated. WITH CONSULT-II 2. SCIA2272E CVT-173 I J K L M Turn ignition switch “ON” and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Make sure that output voltage of CVT fluid temperature sensor is within the range below. FLUID TEMP SEN: 1.0 - 2.0V If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid) Revision; 2004 April G ACS0032S DTC Confirmation Procedure 1. F 2003 Murano DTC P1778 STEP MOTOR - FUNCTION 3. 4. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. Start engine and maintain the following conditions for at least 30 consecutive seconds. TEST START FROM 0 km/h (0 MPH) CONSTANT ACCELERATION: Keep 30 sec or more VEHICLE SPEED: 10 km/h (6 MPH) or more ACC PEDAL OPEN: More than 1/8 Selector lever: D position ENG SPEED: 450 rpm or more If the check result is NG, GO TO CVT-174, "Diagnostic Procedure" . SCIA5492E WITH GST Follow the procedure “With CONSULT-II”. Diagnostic Procedure ACS0032U 1. CHECK STEP MOTOR It is monitoring whether “CVT ratio: 2.37 - 0.43” changes similarly to “STM STEP: -20 - 190” by DATA MONITOR mode. ● If no CONSULT-II, inspect the engine speed (rise and descend), vehicle speed, throttle opening angle, and check shift change. OK or NG OK >> INSPECTION END NG >> Replace the transaxle assembly. Refer to CVT-197, "Removal and Installation" . ● Revision; 2004 April CVT-174 2003 Murano SECOND POSITION SWITCH SECOND POSITION SWITCH Description PFP:34910 A ACS0032V Second position switch is built into CVT control device. When selector lever is in “S” or “L” positions, second position switch turns ON and sends a signal to unified meter and A/C amp. Then signal is transferred to TCM with CAN communications to improve engine brake performance. CONSULT-II Reference Value Remarks: Specification data are reference values. Monitor item SECOND POS SW ACS00332 Condition ● ● CVT Specification Selector lever in “S” position ON Other than the above (except “L” position) OFF Possible Cause B D ACS0032Y Harness or connectors (These switch circuits are open or shorted.) Second position switch (Into control device) E F G H I J K L M Revision; 2004 April CVT-175 2003 Murano SECOND POSITION SWITCH Wiring Diagram — CVT — SPSW ACS00333 TCWA0162E Revision; 2004 April CVT-176 2003 Murano SECOND POSITION SWITCH Diagnostic Procedure ACS00330 1. CHECK CAN COMMUNICATION LINE A Perform the self-diagnosis. Is any malfunction of the “CAN COMM CIRCUIT” indicated? YES >> Check CAN communication line. Refer to CVT-76, "DTC U1000 CAN COMMUNICATION LINE" . NO >> GO TO 2. B CVT 2. CHECK SECOND POSITION SWITCH CIRCUIT With CONSULT-II 1. Turn ignition switch “ON”. (Do not start engine.) 2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II. 3. Read out ON/OFF switching action of the “SECOND POS SW”. D E F G SCIA2283E OK or NG OK >> INSPECTION END NG >> GO TO 3. H 3. CHECK SECOND POSITION SWITCH I Check continuity between CVT device (Second position switch) connector M57 terminals 1 (G) and 2 (B). ● Refer to CVT-177, "Component Inspection" . OK or NG OK >> ● Check the following item. If NG, repair or replace damaged parts. – Unified meter and A/C amp. Refer to DI-57, "CONSULT-II Function" . – Combination meter. Refer to DI-14, "Meter/Gauge Operation and Odo/Trip Meter" . NG >> Repair or replace damaged parts. Component Inspection J K L ACS00331 SECOND POSITION SWITCH Check continuity between terminals. Item Second position switch Condition Connector No. M Terminal No. (Unit side) Selector lever in “S” position Other than the above except “L” position Continuity Yes M57 1-2 No SCIA2041E Revision; 2004 April CVT-177 2003 Murano TROUBLE DIAGNOSIS FOR SYMPTOMS TROUBLE DIAGNOSIS FOR SYMPTOMS Wiring Diagram — CVT — NONDTC PFP:00007 ACS001Z0 TCWA0163E Revision; 2004 April CVT-178 2003 Murano TROUBLE DIAGNOSIS FOR SYMPTOMS A B CVT D E F G H I J K L M TCWA0164E Revision; 2004 April CVT-179 2003 Murano TROUBLE DIAGNOSIS FOR SYMPTOMS TCWA0159E Revision; 2004 April CVT-180 2003 Murano TROUBLE DIAGNOSIS FOR SYMPTOMS TCM terminals and data are reference values. Measured between each terminal and ground. A Terminal No. Wire color 5 L CAN H – – – 6 Y CAN L – – – 8 R BACK-UP LAMP relay 13 G/W Item Condition IGN ON Selector lever in “R” position. 0V Selector lever in other position. Battery voltage ROM assembly 14 L/R ROM assembly 15 BR/R ROM assembly 42 W/R Sensor ground 46 L/O Sensor power Data (Approx.) — — — — — — — — — — — — — B CVT D E 0V F — 4.5-5.5V G H I J K L M Revision; 2004 April CVT-181 2003 Murano SHIFT CONTROL SYSTEM SHIFT CONTROL SYSTEM Control Device Removal and Installation PFP:34901 ACS001ZN SCIA4594E 1. Select lever knob 2. A/T console finisher 3. Control device assembly 4. Lock plate 5. Knob cover 6. Lock pin 7. Control cable 8. Bracket 9. Bracket 10. Lock plate Revision; 2004 April CVT-182 2003 Murano SHIFT CONTROL SYSTEM REMOVAL 1. 2. 3. 4. 5. 6. 7. 8. Remove knob cover below select lever downward. Pull lock pin out of select lever knob. Remove select lever knob. Remove A/T console finisher. ● Refer to IP-18, "Removal and Installation" . Remove console box assembly. ● Refer to IP-18, "Removal and Installation" . Disconnect control cable of control device. Disconnect control device harness connector. Remove control device assembly. A B CVT SCIA2002E INSTALLATION E Note the following, and install in the reverse order of removal. ● After installation is completed, adjust and check CVT position. Adjustment of CVT Position 1. 2. 3. D ACS001ZO Place PNP switch and selector lever in “P” position. Loosen nut of manual lever. While pressing manual lever toward front of vehicle (in P position direction), tighten nut to specified torque. F G :11 - 14 N·m (1.2 - 1.4 kg-m, 9 - 10 ft-lb) H I SCIA2001E Checking of CVT Position 1. 2. 3. 4. 5. 6. 7. 8. Place selector lever in “P” position, and turn ignition switch ON (engine stop). Make sure selector lever can be shifted to other than “P” position when brake pedal is depressed. Also make sure selector lever can be shifted from “P” position only when brake pedal is depressed. Move the selector lever and check for excessive effort, sticking, noise or rattle. Confirm the selector lever stops at each position with the feel of engagement when it is moved through all the positions. Check whether or not the actual position the selector lever is in matches the position shown by the shift position indicator and the transaxle body. The method of operating the lever to individual positions correctly should be as shown in the figure. Confirm the back-up lamps illuminate only when lever is placed in the “R” position. Confirm the back-up lamps do not illuminate when selector lever is in the “P” or “N” position with the lever pushed against the “R” position. Confirm the engine can only be started with the selector lever in the “P” and “N” positions. Make sure transaxle is locked completely in “P” position. SCIA4299E Revision; 2004 April J ACS001ZP CVT-183 2003 Murano K L M CVT SHIFT LOCK SYSTEM CVT SHIFT LOCK SYSTEM Description ● ● PFP:00000 ACS00334 The electrical key interlock mechanism also operates as a shift lock: With the ignition switch turned to ON, the selector lever cannot be shifted from “P” (parking) to any other position unless the brake pedal is depressed. With the key removed, the selector lever cannot be shifted from “P” to any other position. The key cannot be removed unless the selector lever is placed in “P”. The shift lock and key interlock mechanisms are controlled by the ON-OFF operation of the shift lock solenoid and by the operation of the rotator and slider located inside the key cylinder, respectively. Shift Lock System Electrical Parts Location ACS00335 SCIA2003E Revision; 2004 April CVT-184 2003 Murano CVT SHIFT LOCK SYSTEM Wiring Diagram — CVT — SHIFT ACS00336 A B CVT D E F G H I J K L M TCWA0165E Revision; 2004 April CVT-185 2003 Murano CVT SHIFT LOCK SYSTEM TCWA0166E Revision; 2004 April CVT-186 2003 Murano CVT SHIFT LOCK SYSTEM Shift Lock Control Unit Reference Values ACS00337 A SHIFT LOCK HARNESS CONNECTOR TERMINALS LAYOUT B CVT D SCIA2004E SHIFT LOCK CONTROL UNIT INSPECTION TABLE Data are reference values. Terminal (Wire color) Item 1 (R/Y) 8 (B) Power source 2 (L) 8 (B) Detention switch (for key) 3 (L/W) 8 (B) Detention switch (for shift) 4 (R/G) 8 (B) Stop lamp switch Condition E Judgement standard F Always Battery voltage When selector lever is not in “P” position with key inserted. Battery voltage When selector lever is in “P” position with key inserted. Approx. 0V When selector lever is not “P” position. Battery voltage When selector lever is “P” position. Approx. 0V When brake pedal is depressed Battery voltage When brake pedal is released Approx. 0V G H I J 5 (V/W) 8 (B) Vehicle speed signal (8pulse signal) Speed meter is operated K ELF1084D 6 (G) 7 (R/L) 8 (B) 8 (B) Ignition signal Ignition switch: OFF Approx. 0V Ignition switch: ON Battery voltage ● When selector lever is in “P” position, brake pedal is depressed, and ignition switch is ON. ● When selector lever is not in “P” position, ignition switch is ON, and vehicle speed is 10km/h or less. Shift lock solenoid ● — Ground 9 (V) 8 (B) Key lock solenoid 10 (W/B) 8 (B) Revision; 2004 April Approx. 0V Battery voltage — When selector lever is not “P” position. Key unlock solenoid M For 3minutes after selector lever is not in “P” position, vehicle speed is 10km/h or less, and ignition switch is ON → OFF. Except the above 8 (B) L Approx. 0V Battery voltage for approx. 0.1 sec. (Note) When selector lever is “P” position. Approx. 0V When selector lever is “P” position with ignition switch is OFF. Battery voltage for approx. 0.1 sec. (Note) When selector lever is not “P” position with ignition switch is OFF. Approx. 0V CVT-187 2003 Murano CVT SHIFT LOCK SYSTEM NOTE: Confirm that the pointer swings only momentarily because the output time is so short. If the inspection is done with an oscilloscope, it should be observed that the power source voltage lasts for 3.5 to 10 ms. Component Inspection ACS00338 SHIFT LOCK SOLENOID Check operation by applying battery voltage to the CVT device harness connector. CAUTION: Be sure to apply the voltage of the correct polarity to the respective terminals. Otherwise, the part may be damaged. ● Connector No. Terminal No. M57 9 (Battery voltage) - 10 (Ground) SCIA2005E DETENTION SWITCH For Key: ● Check continuity between terminals of the CVT device harness connector. Condition When selector lever is “P” position. Connector No. Terminal No. M57 5-6 Continuity No When selector lever is not “P” position. Yes SCIA2006E DETENTION SWITCH For Shift: ● Check continuity between terminals of the CVT device harness connector. Condition Connector No. Terminal No. M57 13 - 14 Continuity When selector lever is “P” position. When selector lever is not “P” position. No Yes SCIA2046E KEY LOCK SOLENOID Key Lock Check operation by applying battery voltage to key switch and key lock solenoid harness connector. CAUTION: Be careful not to cause burnout of the harness. ● Connector No. Terminal No. M28 1 (Battery voltage) - 2 (Ground) SCIA2042E Revision; 2004 April CVT-188 2003 Murano CVT SHIFT LOCK SYSTEM Key Unlock A Check operation by applying battery voltage to key switch and key lock solenoid harness connector. CAUTION: Be careful not to cause burnout of the harness. ● Connector No. Terminal No. M28 2 (Battery voltage) - 1 (Ground) B CVT SCIA2043E D KEY SWITCH ● Check continuity between terminals of the key switch and key lock solenoid harness connector. Condition Connector No. Terminal No. M28 3-4 Key inserted E Continuity F Yes Key withdrawn No G SCIA2044E H STOP LAMP SWITCH ● Check continuity between terminals of the stop lamp switch harness connector. Condition When brake pedal is depressed Connector No. Terminal No. E116 1-2 I Continuity When brake pedal is released J Yes No Check stop lamp switch after adjusting brake pedal. Refer to BR-6, "Inspection and Adjustment" . K SCIA2045E L M Revision; 2004 April CVT-189 2003 Murano AIR BREATHER HOSE AIR BREATHER HOSE Removal and Installation PFP:31098 ACS001ZV Refer to the figure below for air breather hose and air breather removal and installation procedure. SCIA2284E CAUTION: ● Securely insert the hose into the air breather until it touches the bottom. Revision; 2004 April CVT-190 2003 Murano DIFFERENTIAL SIDE OIL SEAL DIFFERENTIAL SIDE OIL SEAL Removal and Installation PFP:33111 A ACS003L0 B CVT D E F G SCIA2408E 1. Transaxle assembly 2. Differential side oil seal H REMOVAL 1. 2. 3. Remove drive shaft assembly. Refer to FAX-7, "FRONT DRIVE SHAFT" . Remove transfer from transaxle assembly. (with AWD models) Refer to TF-12, "Removal and Installation" . Remove differential side oil seal using a flat-bladed screwdriver. CAUTION: Be careful not to scratch transaxle case. I J K SCIA2412E L M Revision; 2004 April CVT-191 2003 Murano DIFFERENTIAL SIDE OIL SEAL INSTALLATION 1. As shown below, use a drift to drive the differential side oil seal into the case until it is flush. Refer to dimensions A. Unit: mm (in) Dimensions A 0± 0.5 (0±0.020) NOTE: The differential side oil seal pulling direction is used as the reference. SCIA2411E Drift to be used: Location 2WD models AWD models Transaxle case side (left) Tool number (Kent-Moore No.) ST33400001 (J26082) ST33400001 (J26082) Converter housing side (right) Tool number (Kent-Moore No.) ST33400001 (J47005) KV40100621 (J25273) SCIA3710E 2. CAUTION: ● When installing differential side oil seal, apply a coat of NISSAN CVT Fluid NS-2. ● Do not reuse differential side oil seal. Reinstall any part removed. CAUTION: If lubricant leak has occurred, after finishing work, check oil level. Refer to CVT-14, "Checking CVT Fluid" . Revision; 2004 April CVT-192 2003 Murano CVT FLUID COOLER VALVE CVT FLUID COOLER VALVE Removal and Installation PFP:21630 A ACS006P5 COMPONENTS B CVT D E F G H I J K L M SCIA4344E 1. Harness bracket 2. CVT fluid cooler inlet tube assembly 3. Transaxle assembly 4. Hose clamp 5. Inlet water hose 6. Hose clamp 7. Outlet water hose 8. Hose clamp 9. Heater hose 11. CVT fluid cooler valve assembly 10. CVT fluid cooler outlet tube assembly Revision; 2004 April CVT-193 2003 Murano CVT FLUID COOLER VALVE REMOVAL WARNING: Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure engine coolant escaping from the radiator. 1. Remove engine undercover. 2. Drain engine coolant. Refer to CO-8, "Changing Engine Coolant" . CAUTION: Perform when the engine is cold. 3. Remove air duct (inlet). Refer to EM-14, "Removal and Installation" . 4. Remove battery. Refer to SC-9, "Removal and Installation" . 5. Remove air cleaner case (upper and lower), resonator, mass air flow sensor and air duct assembly. Refer to EM-14, "Removal and Installation" . 6. Remove fuse and fusible link block from battery bracket. SCIA2749E 7. Remove battery bracket. SCIA2750E 8. Remove battery bracket mounting. SCIA2751E Revision; 2004 April CVT-194 2003 Murano CVT FLUID COOLER VALVE 9. Remove air cleaner bracket. Refer to EM-14, "Removal and Installation" . 10. Remove control cable from transaxle assembly. Refer to CVT182, "Control Device Removal and Installation" . A B CVT SCIA2752E D 11. Remove water bypass hose from water bypass pipe. Refer to CO-26, "Removal and Installation" . E F G SCIA4350E 12. Remove harness bracket and control cable bracket from transaxle assembly. Refer to CVT-182, "Control Device Removal and Installation" and CVT-193, "COMPONENTS" . 13. Remove inlet water hose and outlet water hose. Refer to CVT193, "COMPONENTS" . 14. Remove heater hose from heater pipe. Refer to CO-26, "Removal and Installation" . 15. Remove CVT fluid cooler valve assembly from transaxle assembly. Refer to CVT-193, "COMPONENTS" . H I J SCIA2753E K 16. Remove heater hose from CVT fluid cooler valve assembly. L M SCIA4349E 17. Remove CVT fluid cooler inlet tube assembly and CVT fluid cooler outlet tube assembly from CVT fluid cooler valve assembly. SCIA4348E Revision; 2004 April CVT-195 2003 Murano CVT FLUID COOLER VALVE INSTALLATION Note the following, and install in the reverse order of removal. ● After completing installation, check for engine coolant leakage, engine coolant level, and the positions of CVT. Refer to CO-8, "Inspection" and CVT-183, "Checking of CVT Position" . CAUTION: ● Install hose clamp with tabs aligned with markings of CVT fluid cooler valve assembly and each hose. ● Do not reuse CVT fluid cooler inlet tube assembly and CVT fluid cooler outlet tube assembly. ● Apply LLC around O-ring when installing CVT fluid cooler inlet tube and CVT fluid cooler outlet tube assembly to CVT fluid cooler valve assembly. Component Inspection 1. ACS006P6 Make sure that CVT fluid cooler valve is fully opened at room temperature. Standard Dimension A from CVT fluid cooler valve port end to tip of valve shaft (At room temperature) : Approx 72.0 mm or more SCIA2711J 2. Put CVT fluid cooler valve into a water-filled container, and then heat it up to 82°C (180°F) or more for 10 minutes or more. SCIA2710E 3. Make sure that CVT fluid cooler valve is fully closed. Standard Dimension A from CVT fluid cooler valve port end to tip of valve shaft (When heating to 82°C (180°F) or more for 10 minutes or more) : Approx 66.5 mm or less SCIA2711J Revision; 2004 April CVT-196 2003 Murano TRANSAXLE ASSEMBLY TRANSAXLE ASSEMBLY Removal and Installation PFP:32020 A ACS002KZ COMPONENTS (2WD MODELS) 1XD00 models B CVT D E F G H I J K SCIA5135E 1. Transaxle assembly 2. LH engine mounting bracket 3. Fluid cooler tube 4. Copper washer 5. LH engine mounting insulator 6. Hose clamp 7. CVT fluid cooler hose 8. O-ring 9. Rear gusset 10. CVT fluid cooler hose Revision; 2004 April 11. CVT fluid charging pipe CVT-197 L 12. CVT fluid level gauge M 2003 Murano TRANSAXLE ASSEMBLY 1XD07 models SCIA4352E 1. Rear gusset 2. Air breather hose 3. CVT fluid level gauge 4. CVT fluid charging pipe 5. O-ring 6. Hose clamp 7. Copper washer 8. Fluid cooler tube 9. CVT fluid cooler hose 10. Hose clamp 11. Clip 12. CVT fluid cooler hose 13. Hose clamp 14. LH engine mounting bracket 15. LH engine mounting insulator 16. Transaxle assembly Revision; 2004 April CVT-198 2003 Murano TRANSAXLE ASSEMBLY COMPONENTS (AWD MODELS) A 1XD01 models B CVT D E F G H I J SCIA5136E 1. Transaxle assembly 2. LH engine mounting bracket 3. Fluid cooler tube 4. Copper washer 5. Transfer gusset 6. Hose clamp 7. CVT fluid cooler hose 8. O-ring 9. Rear gusset 10. Transfer assembly 11. CVT fluid charging pipe 13. LH engine mounting insulator 14. CVT fluid cooler hose K L 12. CVT fluid level gauge M Revision; 2004 April CVT-199 2003 Murano TRANSAXLE ASSEMBLY 1XD08 models SCIA4353E 1. Rear gusset 2. Transfer gusset 3. Air breather hose 4. Transfer assembly 5. Front engine mounting bracket 6. CVT fluid level gauge 7. CVT fluid charging pipe 8. O-ring 9. Hose clamp 10. Copper washer 11. Fluid cooler tube 12. CVT fluid cooler hose 13. Hose clamp 14. Clip 15. CVT fluid cooler hose 16. Hose clamp 17. LH engine mounting bracket 18. LH engine mounting insulator 19. Transaxle assembly 20. Rear engine mounting bracket Revision; 2004 April CVT-200 2003 Murano TRANSAXLE ASSEMBLY REMOVAL CAUTION: The transaxle assembly it self cannot be removed from the vehicle. Remove the transaxle assembly and engine assembly together from the vehicle. 1. Remove exhaust front tube with power tool. Refer to EX-3, "Removal and Installation" . 2. Remove dust cover from converter housing part. A B CVT D E SCIA1860E 3. Turn crankshaft, and remove the four tightening nuts for drive plate and torque converter. CAUTION: The crankshaft should be rotated clockwise, viewed from the front of the engine. F G H SCIA1861E 4. 5. 6. 7. 8. Remove the four bolts in the figure. Remove transaxle assembly and engine assembly together from the vehicle. Refer to EM-95, "Removal and Installation" . Remove drive shaft. Refer to FAX-7, "Removal and Installation (Left Side)" , FAX-8, "Removal and Installation (Right Side)" . CAUTION: Be sure to replace the new differential side oil seal every removal of drive shaft. Refer to CVT-191, "Removal and Installation" . Remove transfer gusset. (with AWD models) SCIA1893E Remove transfer assembly. Refer to TF-12, "Removal and Installation" . (with AWD models) CAUTION: Be sure to replace the new differential side oil seal (converter housing side only) every removal of transfer. Refer to CVT-191, "Removal and Installation" . 9. Remove CVT fluid charging pipe. 10. Disconnect harness connector and wire harness. SCIA1894E Revision; 2004 April CVT-201 2003 Murano I J K L M TRANSAXLE ASSEMBLY 11. Remove POS sensor, from engine assembly. Refer to EM-26, "Removal and Installation" . CAUTION: ● Do not subject it to impact by dropping or hitting it. ● Do not disassemble. ● Do not allow metal filings, etc., to get on the sensor's front edge magnetic area. ● Do not place in an area affected by magnetism. 12. Remove starter motor. Refer to SC-16, "Removal and Installation" . SCIA1895E 13. Remove CVT fluid cooler valve assembly. (With CVT fluid cooler tube assembly and heater hose). SCIA1896E 14. Install slinger to transaxle assembly. 15. Remove rear gusset. 16. Remove LH engine mounting bracket and LH engine mounting insulator. 17. Remove front suspension member from transaxle assembly and engine assembly. Refer to EM-95, "Removal and Installation" . (with AWD models) 18. Remove transaxle assembly fixing bolts with power tool. SCIA1898E 19. Remove transaxle assembly from engine assembly with a hoist. ● Secure torque converter to prevent it from dropping. SCIA1868E Revision; 2004 April CVT-202 2003 Murano TRANSAXLE ASSEMBLY INSPECTION Installation and Inspection of Torque Converter ● A After inserting a torque converter to a transaxle, be sure to check distance A to ensure it is within the reference value limit. Distance A B : 14.0 mm (0.55 in) or more CVT D SCIA1869E INSTALLATION E Install the removed parts in the reverse order of the removal, while paying attention to the following work. ● Screw and set the locate into the stud bolts for the torque converter locate. F G H SCIA1871E ● I Rotate the torque converter for the locate to go down. J K L SCIA1873E ● Rotate the drive plate for the hole of the drive plate locate to go down. M SCIA1872E Revision; 2004 April CVT-203 2003 Murano TRANSAXLE ASSEMBLY ● Installing transaxle assembly from engine assembly with a hoist. SCIA1868E ● When installing fluid cooler tube to transaxle assembly, transaxle assembly the part with the tube aligned with the rib. SCIA2285E ● When installing transaxle to the engine, attach the fixing bolts in accordance with the following standard. Bolt No. 1 2 3 4 Number of bolts 1 2 2 4 52 (2.05) 36 (1.42) 105 (4.13) 35 (1.38) Bolt length “ ”mm (in) Tightening torque N-m (kg-m, ft-lb) 75 (7.7, 55) 47 (4.8, 35) SCIA1870E ● When installing CVT fluid cooler valve assembly to the engine, attach the fixing bolts in accordance with the following standard. : 30N-m (3.1kg-m, 22ft-lb) SCIA1896E ● Align the positions of tightening nuts for drive plate with those of the torque converter, and temporarily tighten the nuts. Then, tighten the nuts with the specified torque. : 51N-m (5.2kg-m, 38ft-lb) CAUTION: ● When turning crankshaft, turn it clockwise as viewed from the front of the engine. SCIA1861E Revision; 2004 April CVT-204 2003 Murano TRANSAXLE ASSEMBLY ● ● ● ● ● When tightening the tightening nuts for the torque converter after fixing the crankshaft pulley bolts, be sure to confirm the tightening torque of the crankshaft pulley mounting bolts. A After converter is installed to drive plate, rotate crankshaft several turns and check to be sure that transaxle rotates freely without binding. Install POS sensor. Refer to EM-26, "Removal and Installation" . B After completing installation, check for fluid leakage, fluid level, and the positions of CVT. Refer to CVT-14, "Checking CVT Fluid" , CVT-183, "Adjustment of CVT Position" , CVT-183, "Checking of CVT Position" . When replacing the CVT assembly, erase EEP ROM in TCM. Refer to CVT-8, "Precautions for TCM and CVT CVT Assembly Replacement" . D E F G H I J K L M Revision; 2004 April CVT-205 2003 Murano SERVICE DATA AND SPECIFICATIONS (SDS) SERVICE DATA AND SPECIFICATIONS (SDS) General Specifications PFP:00030 ACS001ZX VQ35DE engine Applied model 2WD AWD CVT model RE0F09A CVT assembly Model code number transmission gear ratio 1XD00, 1XD07 1XD01, 1XD08 D range Variable Reverse 1.766 Final drive 5.173 Recommended fluid NISSAN CVT fluid NS-2*1 Fluid capacity 10.2 liter (10-6/8 US qt, 9 Imp qt) CAUTION: Use only NISSAN Genuine CVT fluid NS-2. Do not mix with other fluid. ● ● Using CVT fluid other than Nissan Genuine CVT fluid NS-2 will deteriorate in driveability and CVT durability, and may damage the CVT, which is not covered by the warranty. *1: Refer to MA-11, "Fluids and Lubricants" . Stall Speed ACS00201 Stall speed 2,700 - 3,250 rpm Line Pressure ACS002SA Line pressure kPa (kg/cm2 , psi) Engine speed rpm R position D position Idle 750 (7.65, 108.8) Stall 5300 - 5700 (54.06 - 58.14, 768.5 - 826.5) L position Solenoid Valves ACS00339 Name Resistance (Approx.) (Ω) Terminal No. Pressure control solenoid valve B (secondary pressure solenoid valve) Pressure control solenoid valve A (line pressure solenoid valve) 3 3-9 2 Torque converter clutch solenoid valve 12 Lock-up select solenoid valve 6 - 19 13 CVT Fluid Temperature Sensor Name CVT fluid temperature sensor 1 ACS002SC Condition CONSULT-II “DATA MONITOR” (Approx.) Resistance (Approx.) 20°C (68°F) 2.0 V 2.5 kΩ 80°C (176°F) 1.0 V 0.3 kΩ Primary Speed Sensor Name Primary speed sensor Revision; 2004 April ACS002SD Condition When running at 20 km/h (12MPH) in “L” position with the closed throttle position switch “OFF”, use the CONSULT-II pulse frequency measuring function. CAUTION: Connect the diagnosis data link connector to the vehicle diagnosis connector. CVT-206 Data (Approx.) 600 Hz 2003 Murano SERVICE DATA AND SPECIFICATIONS (SDS) Secondary Speed Sensor ACS002SE A Name Secondary speed sensor Condition Data (Approx.) When moving at 20 km/h (12MPH), use the CONSULT-II pulse frequency measuring function. CAUTION: Connect the diagnosis data link connector to the vehicle diagnosis connector. Removal and Installation 300 Hz ACS002SG B CVT Unit: mm (in) Distance between end of converter housing and torque converter 14.0 mm (0.55 in) or more D E F G H I J K L M Revision; 2004 April CVT-207 2003 Murano SERVICE DATA AND SPECIFICATIONS (SDS) Revision; 2004 April CVT-208 2003 Murano
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