Workshop Manual GALANT Mitsubishi Automatic Transmission 23
User Manual: Mitsubishi Galant Workshop Automatic Transmission Manual Troubleshoot Mitsubishi Galant Workshop Automatic Transmission |
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23-1 AUTOMATIC TRANSMISSION CONTENTS SERVICE SPECIFICATIONS . . . . . . . . . . . . . . . . . 2 LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . 2 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . 4 ON-VEHICLE SERVICE . . . . . . . . . . . . . . . . . . . 46 Essential Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 A/T Control Component Location . . . . . . . . . . . . . 51 23109000347 A/T Control Component Check . . . . . . . . . . . . . . . 52 Torque Converter Stall Test . . . . . . . . . . . . . . . . . . 54 Hydraulic Pressure Test . . . . . . . . . . . . . . . . . . . . . 56 Hydraulic Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Line Pressure Adjustment . . . . . . . . . . . . . . . . . . . . 62 Selector Lever Operation Check . . . . . . . . . . . . . . 62 TRANSMISSION CONTROL* . . . . . . . . . . . . . . 63 TRANSMISSION ASSEMBLY . . . . . . . . . . . . . . 66 WARNING REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICULES WARNING! (1) Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal injury or death to service personnel (from inadvertent firing of the air bag) or to driver and passenger (from rendering the SRS inoperative). (2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized MITSUBISHI dealer. (3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS-related component. NOTE The SRS includes the following components: SRS-ECU, SRS warning lamp, air bag module, clock spring, side impact sensors and interconnecting wiring. Other SRS-related components (that may have to be removed/installed in connection with SRS service or maintenance) are indicated in the table of contents by an asterisk (*). 23-2 AUTOMATIC TRANSMISSION - Service Specifications/ Lubricants/Special Tools SERVICE SPECIFICATIONS 23100030222 Items Standard value Oil temperature sensor kW at 0_C 16.5 - 20.5 at 100_C 0.57 - 0.69 Resistance of damper clutch control solenoid valve coil (at 20_C) W 2.7 - 3.4 Resistance of Low-Reverse solenoid valve coil (at 20_C) W 2.7 - 3.4 Resistance of second solenoid valve coil (at 20_C) W 2.7 - 3.4 Resistance of underdrive solenoid valve coil (at 20_C) W 2.7 - 3.4 Resistance of overdrive solenoid valve coil (at 20_C) W 2.7 - 3.4 Stall speed r/min 2,100 - 2,600 LUBRICANTS 23100040034 Items Specified lubricant Quantity L Transmission fluid DIA QUEEN ATF SPII or equivalent 7.8 SPECIAL TOOLS Tool 23100060214 Number Name Use MB991502 MUT-II sub assembly Checking of the diagnosis code MD998330 (including MD998331) Oil pressure gauge (2,942 kPa) Measurement of oil pressure MD998332 Adapter MD998900 Adapter AUTOMATIC TRANSMISSION - Special Tools Tool 23-3 Number Name Use MB990635 or MB991113 Steering linkage puller Ball joint disconnection MB991610 Oil filter wrench Removal and installation of automatic transmission oil filter GENERAL SERVICE TOOL MZ203827 Engine lifter Supporting the engine assembly during removal and installation of the transmission MB991453 Engine hanger assembly Supporting the engine assembly during removal and installation of the transmission 23-4 AUTOMATIC TRANSMISSION - Troubleshooting TROUBLESHOOTING 23100760275 STANDARD FLOW OF DIAGNOSIS TROUBLESHOOTING Gathering information from customer. Check trouble symptoms. Read the diagnosis code (GROUP 00 - How to Use Troubleshooting/Inspection Service Points.) Communication with MUT-II not possible Inspection procedure No. 1 in Inspection Chart For Trouble Symptoms (Refer to P.23-27.) No diagnosis code displayed Diagnosis code displayed Erase the diagnosis code (GROUP 00 - How to Use Troubleshooting/Inspection Service Points.) Carry out the essential service (Refer to P.23-46.) Abnormality exists (no diagnosis code) Road test (Refer to P.23-6.) Abnormality exists (diagnosis code present) No abnormality Recheck diagnosis codes which were read before the road test. Diagnosis code displayed To INSPECTION CHART DIAGNOSIS CODES (Refer to P.23-14.) FOR To INSPECTION CHART TROUBLE SYMPTOMS (Refer to P.23-26.) No diagnosis code displayed FOR Search for cause. Found Repair NG Confirmation test (road test) OK NG Not found INTERMITTENT MALFUNCTION (GROUP 00 - Points to Note for Intermittent Malfunctions.) OK Completed AUTOMATIC TRANSMISSION - Troubleshooting DIAGNOSIS FUNCTION 1. N range lamp The N range lamp flashes at a frequency 1 Hz if there is an abnormality in any of table below which are related to the A/T the diagnosis code output if the N range at a frequency of approximately 1 Hz. 23-5 23100770186 of approximately the items in the system. Check lamp is flashing N range lamp flashing items Crank angle sensor Input shaft speed sensor Output shaft speed sensor Each solenoid valve Out of phase at each shift point Caution If the N range lamp is flashing at a frequency of approximately 2 Hz (faster than at 1 Hz), it means that the automatic transmission fluid temperature is too high. Stop the vehicle in a safe place and wait until the N range lamp switches off. 2. Method of reading the diagnosis code Use the MUT-II or the N range lamp to take a reading of the diagnosis codes. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points.) 23-6 AUTOMATIC TRANSMISSION - Troubleshooting ROAD TEST 23100780271 Check by the following procedure. No. State prior to test and operation Test and operation Judgement value Check item Diagnosis code No. Inspection procedure page if there is an abnormality 1 Ignition switch: OFF Ignition switch (1) ON Data list No. 54 Battery voltage [V] Control relay 54 A/T Control relay system (23-25) 2 Ignition switch: ON Engine: Stopped Selector lever position: P Selector lever position (1) P, (2) R, (3) N, (4) D, (5) 3, (6) 2, (7) L Data list No. 61 (1) P, (2) R, (3)N, (4) D, (5) 3, (6) 2, (7) L Inhibitor switch - Inhibitor switch system (23-36) Throttle position sensorAccelerator pedal position sensor 11 12 14 Throttle position sensor system (23-15) Accelerator pedal position sensor system (23-15) Data list No. 25 (1) OFF (2) ON Wide open throttle switch 25 Wide open throttle switch system (23-17) Brake pedal (1) Depressed (2) Released Data list No. 26 (1) ON (2) OFF Stop lamp switch 26 Stop lamp switch system (23-18) Data list No. 11 Accelerator pedal (1) 400 - 1,000 mV (1) Released (2) Half depressed (2) Gradually rises from (1) (3) Depressed (3) 4,500 - 5,000 mV 3 Ignition switch: ST Engine: Stopped Starting test with lever P or N range Starting should be possible Starting possible or impossible - Starting impossible (23-28) 4 Warming up Drive for 15 minutes or more so that the automatic fluid temperature becomes 70 90_C. Data list No. 15 Gradually rises to 70 - 90_C Oil temperature sensor 15 Oil temperature sensor system (23-15) 23-7 AUTOMATIC TRANSMISSION - Troubleshooting No. State prior to test and operation Test and operation Judgement value Check item Diagnosis code No. Inspection procedure page if there is an abnormality 5 Engine: Idling Selector lever position: N Brake pedal (Retest) (1) Depressed (2) Released Data list No. 26 (1) ON (2) OFF Stop lamp switch 26 Stop lamp switch system (23-18) A/C switch (1) ON (2) OFF Data list No. 65 (1) ON (2) OFF Dual pressure switch - Dual pressure switch system (23-37) Idle position switch - Idle position switch system (23-37) Data list No. 21 Crank angle (1) 550 - 850 rpm sensor Gradually rises from (1) 21 Crank angle sensor system (23-16) Data list No. 57 (2) Data changes Communication with engineECU Communication with TCL-ECU 51 Serial communication system (23-25) Should be no abnormal shifting shocks Time lag should be Malfunction when starting - Engine stalling during shifting (23-30) - Shocks when changing from N to D and large time lag (23-30) - Shocks when changing from N to R and large time lag (23-31) - Shocks when changing from N to D,N to R and large time lag (23-32) - Does not move forward (23-28) - Does not reverse (23-29) - Does not move (forward or reverse) (23-29) Data list No. 64 Accelerator pedal (1) ON (1) Released (2) Half depressed (2) OFF Selector lever position (1) N ® D (2) N ® R within 2 seconds Driving impossible 23-8 AUTOMATIC TRANSMISSION - Troubleshooting No. State prior to test and operation Test and operation Judgement value Check item Diagnosis code No. Inspection procedure page if there is an abnormality 6 Selector lever position: N (Carry out on a flat and straight road.) Selector lever position and vehicle speed (1) Idling in L range (Vehicle stopped) (2) Driving at constant speed of 10 km/h in L position (3) Driving at constant speed of 30 km/h in 2 position (4) Driving at 50 km/h in 3 position with accelerator fully closed (5) Driving at constant speed of 50 km/h in D position (Each condition should be maintained for 10 seconds or more.) Data list No. 63 (2) 1st, (4) 3rd, (3) 2nd, (5) 4th Shift condition - - Data list No. 31 (2) 0 %, (4) 100 %, (3) 100 %, (5) 100 % Low and reverse 31 solenoid valve Low and reverse solenoid valve system (23-18) Data list No. 32 (2) 0 %, (4) 0 %, (3) 0 %, (5) 100 % Underdrive solenoid valve 32 Underdrive solenoid valve system (23-18) Data list No. 33 (2)100 %, (4) 100 %, (3) 0 %, (5) 0 % Second solenoid valve 33 Second solenoid valve system (23-18) Data list No. 34 (2) 100 %, (4) 0 %, Overdrive solenoid valve 34 Overdrive solenoid valve system (23-18) Vehicle speed sensor - Vehicle speed sensor system (23-38) Data list No. 22 Input shaft (4) 1,800 - 2,100 speed sensor rpm 22 Input shaft speed sensor system (23-16) Data list No. 23 Output shaft (4) 1,800 - 2,100 speed sensor rpm 23 Output shaft speed sensor system (23-17) Selector lever position and vehicle speed (1) Release the accelerator pedal fully while driving at 50 km/h in 3rd gear. (2) Driving at constant speed of 50 km/h in 3rd gear. Data list No. 36 Damper clutch control solenoid (1) 0 % (2) Approx. 70 - 90 valve % 36 52 Damper clutch control solenoid valve system (23-19) 7 Selector lever position: 3 (Carry out on a flat and straight road.) (3) 100 %, (5) 0 % Data list No. 29 (1) 0 km/h (4) 50 km/h Data list No. 52 (1) Approx. 100 - 300 rpm (2) Approx. 0 - 10 rpm 23-9 AUTOMATIC TRANSMISSION - Troubleshooting No. State prior to test and operation Test and operation Judgement value Check item Diagnosis code No. Inspection procedure page if there is an abnormality 8 Use the MUT-II to stop the INVECSII function. Selector lever position: D (Carry out on a flat and straight road.) Monitor data list No. 11, 23, and 63 with the MUT-II. (1) Accelerate to 4th gear at a throttle position sensor output of 1.5V (accelerator opening angle of 30 %). (2) Gently decelerate to a standstill. (3) Accelerate to 4th gear at a throttle position sensor output of 2.5 V (accelerator opening angle of 50%). (4) While driving at 60 km/h in 4th gear, shift down to 3 range. (5) While driving at 40 km/h in 3rd gear, shift down to 2 range. (6) While driving at 20 km/h in 2nd gear, shift down to L range. For (1), (2) and (3), the reading should be the same as the specified output shaft speed and no abnormal shocks should occur. For (4), (5) and (6), downshifting should occur immediately after the shifting operation is made. Malfunction when shifting - Shocks and running up (23-32) Displaced shifting points - All points (23-33) - Some points (23-34) Does not shift - No diagnosis code (23-34) 22 Input shaft speed sensor system (23-16) 23 Output shaft speed sensor system (23-17) 31 Low and reverse solenoid valve system (23-18) 33 Second solenoid valve system (23-18) 41 1st gear ratio is not specified (23-20) 42 2nd gear ratio is not specified (23-21) 33 Second solenoid valve system (23-18) 34 Overdrive solenoid valve system (23-18) 42 2nd gear ratio is not specified (23-21) 43 3rd gear ratio is not specified (23-22) 32 Underdrive solenoid valve system (23-18) 33 Second solenoid valve system (23-18) 43 3rd gear ratio is not specified (23-22) 44 4th gear ratio is not specified (23-23) Does not shift from 1 to 2 or 2 to 1 Does not shift from 2 to 3 or 3 to 2 Does not shift from 3 to 4 or 4 to 3 23-10 AUTOMATIC TRANSMISSION - Troubleshooting No. State prior to test and operation Test and operation Judgement value Check item Diagnosis code No. Inspection procedure page if there is an abnormality 9 Selector lever position: N (Carry out on a flat and straight road.) Monitor data list No. 22 and No. 23 with the MUT-II. II (1) Move selector lever to R range, drive at constant speed of 10 km/h. The ratio between data list No. 22 and No. 23 should be the same as the gear ratio when reversing. Does not shift 22 Input shaft speed sensor system (23-16) 23 Output shaft speed sensor system (23-17) 46 Reverse gear ratio is not specified (23-24) SHIFT PATTERN <4G63 engine> UPSHIFT PATTERN Throttle opening % Thick line: Standard shift pattern 100 1 2 2 3 3 4 50 2®3 movement range 0 0 1,000 2,000 3®4 movement range 3,000 4,000 5,000 6,000 7,000 Output shaft speed r/min 0 50 100 Vehicle speed km/h 150 200 23-11 AUTOMATIC TRANSMISSION - Troubleshooting DOWNSHIFT PATTERN Throttle opening % Thick line: Standard shift pattern 100 1 2 1 2 1,000 2,000 0 4 3 (L,2) 3 4 (L,2,3) 3¬4 movement range 2¬3 movement range 0 3 2 2 (L) 50 0 3 50 3,000 4,000 5,000 Output shaft speed r/min 100 6,000 7,000 150 200 Vehicle speed km/h HOLD MODE PATTERN Thick line: Standard shift pattern Throttle opening % 100 2 3 3 3 4 4 50 1 0 2 0 2,000 0 50 4,000 Output shaft speed r/min 100 Vehicle speed km/h 6,000 150 8,000 200 23-12 AUTOMATIC TRANSMISSION - Troubleshooting <6A13 engine> UPSHIFT PATTERN Throttle opening % 100 Thick line: Standard shift pattern 1 50 2 2 2®3 movement range 0 0 1,000 0 2,000 50 3 3 4 3®4 movement range 3,000 4,000 Output shaft speed r/min 5,000 100 Vehicle speed km/h 150 6,000 7,000 200 DOWNSHIFT PATTERN Throttle opening % 100 Thick line: Standard shift pattern 1 1 2 2 2 (L) 3 3 2 4 3 (L,2) 3 4 (L,2,3) 50 2¬3 movement range 0 0 0 3¬4 movement range 1,000 2,000 50 3,000 4,000 Output shaft speed r/min 100 Vehicle speed km/h 5,000 150 6,000 7,000 200 23-13 AUTOMATIC TRANSMISSION - Troubleshooting HOLD MODE PATTERN Throttle opening % Thick line: Standard shift pattern 100 2 3 3 3 4 4 50 1 0 2 0 0 2,000 50 4,000 Output shaft speed r/min 100 Vehicle speed km/h 6,000 150 8,000 200 23-14 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION CHART FOR DIAGNOSIS CODE 23100790243 Code Diagnosis item 11 Short circuit 23-15 Open circuit 23-15 14 Throttle position sensor system Accelerator pedal position sensor system Sensor maladjustment 23-15 15 Oil temperature sensor system Open circuit 23-15 21 Crank angle sensor system Open circuit 23-16 22 Input shaft speed sensor system Short circuit/open circuit 23-16 23 Output shaft speed sensor system Short circuit/open circuit 23-17 25 Wide open throttle switch system Short circuit 23-17 26 Stop lamp switch system Short circuit/open circuit 23-18 31 Low and reverse solenoid valve system Short circuit/open circuit 23-18 32 Underdrive solenoid valve system Short circuit/open circuit 23-18 33 Second solenoid valve system Short circuit/open circuit 23-18 34 Overdrive solenoid valve system Short circuit/open circuit 23-18 36 Damper control clutch solenoid valve system Short circuit/open circuit 23-19 41 1st gear ratio does not meet the specification 23-20 42 2st gear ratio does not meet the specification 23-21 43 3rd gear ratio does not meet the specification 23-22 44 4th gear ratio does not meet the specification 23-23 46 Reverse gear ratio does not meet the specification 23-24 51 Abnormal communication with engine-ECU Abnormal communication with TCL-ECU 23-25 52 Damper control clutch solenoid valve system Defective system 23-19 54 A/T Control relay system Short circuit to earth/ open circuit 23-25 56 N range lamp system Short circuit to earth 23-26 71 Malfunction of A/T-ECU 12 Reference page 23-26 AUTOMATIC TRANSMISSION - Troubleshooting 23-15 INSPECTION PROCEDURES FOR DIAGNOSIS CODES Code No. 11, 12, 14 Throttle position sensor system , accelerator pedal position sensor Probable cause If the TPS or APS output voltage is 4.8 V or higher when the engine is idling, the output is judged to be too high and diagnosis code No. 11 is output. Code No. 11 is also output if there is a problem with the APS and an APS fail-safe signal is received from the TCL-ECU. If the TPS or APS output voltage is 0.2 V or lower at times other than when the engine is idling, the output is judged to be too low and diagnosis code No. 12 is output. If the TPS or APS output voltage is 0.2 V or lower or if it is 1.2 V or higher when the engine is idling, the TPS or APS adjustment is judged to be incorrect and diagnosis code No. 14 is output. D Throttle position sensor check (Refer to GROUP 13A - On-vehicle Service.) Accelerator pedal position sensor check (Refer to GROUP 13H - On-vehicle Service.) NG D D D Malfunction of the throttle position sensor Malfunction of the accelerator pedal position sensor Malfunction of connector Malfunction of the A/T-ECU Replace OK Check the following connectors: B-07 , B-41 , C-29 NG Repair OK Harness check D Between throttle position sensor and A/T-ECU D Between accelerator pedal position sensor and A/T-ECU OK Check the trouble symptoms. NG NG Repair Replace the A/T-ECU. Code No. 15 Oil temperature sensor system Probale cause If the oil temperature sensor output voltage is 2.6 V or more even after driving for 10 minutes or more (if the oil temperature does not increase), it is judged that there is an open circuit in the oil temperature sensor and diagnosis code No. 15 is output. D D D Oil temperature sensor check (Refer to P.23-52.) NG Malfunction of the oil temperature sensor Malfunction of connector Malfunction of the A/T-ECU Replace OK Check the follwing connectors: B-70, C-29 NG Repair OK Harness check D Between oil temperature sensor and A/T-ECU OK Check the trouble symptoms. NG NG Repair Replace the A/T-ECU. 23-16 AUTOMATIC TRANSMISSION - Troubleshooting Code No. 21 Crank angle sensor system Probable cause If no output pulse is detected from the crank angle sensor for 5 seconds or more while driving at 25 km/h or more, it is judged that there is an open circuit in the crank angle sensor and diagnosis code No. 21 is output. D D D Check the follwing connectors: B-77, C-29 NG Malfunction of the crank angle sensor Malfunction of connector Malfunction of the A/T-ECU Repair OK Harness check D Between crank angle sensor and A/T-ECU NG Repair OK Crank angle sensor system check (Refer to GROUP 13A - Troubleshooting.) OK NG Check the trouble symptoms. Replace the A/T-ECU. Code No. 22 Input shaft speed sensor system Probable cause If no output pulse is detected from the input shaft speed sensor for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h or more, there is judged to be an open circuit or short-circuit in the input shaft speed sensor and diagnosis code No. 22 is output. If diagnosis code No. 22 is output four times, the transmission is locked into 3rd gear (D range) or 2nd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D D Malfunction Malfunction Malfunction Malfunction of of of of the input shaft speed sensor the underdrive clutch retainer connector A/T-ECU L: Refer to the Transmission Workshop Manual. Measure at the input shaft speed sensor connector B-71. D Disconnect the connector and measure at the harness side. (1) Voltage between 3 and earth (Ignition switch: ON) OK: Battery voltage (2) Voltage between 2 and earth (Ignition switch: ON) OK approx. 5 V (3) Continuity between 1 and earth OK: Continuity NG OK Check the following harness: D Between the input shaft speed sensor and the ignition switch D Between the input shaft speed sensor and A/T-ECU OK Check the trouble symptoms. OK Measure output waveform of the input shaft speed sensor. (using an oscilloscope) D Engine: 2,000 r/min (approx. 50 km/h) D Transmission: 3rd gear (Voltage) OK: Conforms to the waveform shown at page 23-45 (Inspection procedure using an oscilloscope). There is no noise in the output waveform. OK Check the trouble symptoms. Check the following connectors: B-71, C-29 NG NG NG NG Repair Repair Replace the A/T-ECU. Replace the input shaft speed sensor. Check the trouble symptoms. NG A/T overhaul K D Replace the retainer. underdrive clutch Check the trouble symptoms. NG NG Replace the A/T-ECU. Eliminate the cause of the noise. 23-17 AUTOMATIC TRANSMISSION - Troubleshooting Code No. 23 Output shaft speed sensor system Probable cause If the output from the output shaft speed sensor is continuously 50% lower than the vehicle speed for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h or more, there is judged to be an open circuit or short-circuit in the output shaft speed sensor and diagnosis code No. 23 is output. If diagnosis code No. 23 is output four times, the transmission is locked into 3rd gear (D range) or 2nd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D D Malfunction Malfunction Malfunction Malfunction of of of of the output shaft speed sensor the transfer drive gear or driven gear connector the A/T-ECU L: Refer to the Transmission Workshop Manual. Measure at the output shaft speed sensor connector B-68. D Disconnect the connector and measure at the harness side. (1) Voltage between 3 and earth (Ignition switch: ON) OK: Battery voltage (2) Voltage between 2 and earth (Ignition switch: ON) OK: approx. 5 V (3) Continuity between 1 and earth OK: Continuity NG OK Check the following harness: D Between the output shaft speed sensor and the ignition switch D Between the output shaft speed sensor and A/T-ECU OK OK NG NG Repair Repair Replace the A/T-ECU. Replace the output shaft speed sensor. NG Check the trouble symptoms. A/T overhaul L D Replace the transfer drive gear and driven gear. Check the trouble symptoms. NG Eliminate the cause of the noise. NG Check the trouble symptoms. NG NG Check the trouble symptoms. OK Measure output waveform of the output shaft speed sensor. (using an oscilloscope) D Engine: 2,000 r/min (approx. 50 km/h) D Transmission: 3rd gear (Voltage) OK: Conforms to the waveform shown at page 23-45 (Inspection procedure using an oscilloscope). There is no noise in the output waveform. Check the following connectors: B-68, C-29 Replace the A/T-ECU. Code No. 25 Wide open throttle switch system Probable cause If the wide open throttle switch is on for 1 second or more with the throttle valve opening angle at 70% or less, it is judged that there is a short circuit in the wide open throttle switch and diagnosis code No. 25 is output. D D D Wide open throttle switch check (Refer to P.23-64). NG Malfunction of the wide open throttle switch Malfunction of connector Malfunction of A/T-ECU Replace OK Check the following connectors: C-18, C-30, C-83 NG Repair OK Harness check D Between the wide open throttle switch and the A/T-ECU. OK Check the trouble symptoms. NG NG Repair Replace the A/T-ECU. 23-18 AUTOMATIC TRANSMISSION - Troubleshooting Code No. 26 Stop lamp switch system Probable cause If the stop lamp switch is on for 5 minutes or more while driving, it is judged that there is a short circuit in the stop lamp switch and diagnosis code No. 26 is output. D D D Stop lamp switch check (Refer to GROUP 35 - Brake Pedal.) NG Malfunction of the stop lamp switch Malfunction of connector Malfunction of the A/T-ECU Replace OK Check the following connectors: C-02, C-30, C-65, C-83 NG Repair OK Harness check D Between stop lamp switch and A/T-ECU OK Check the trouble symptoms. NG NG Repair Replace the A/T-ECU. Probable cause Code No. 31 Low and reverse solenoid valve system Code No. 32 Underdrive solenoid valve system Code No. 33 Second solenoid valve system Code No. 34 Overdrive solenoid valve system If the resistance value for a solenoid valve is too large or too small, it is judged that there is a short-circuit or an open circuit in the solenoid valve and the respective diagnosis code is output. The transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. Solenoid valve check (Refer to P.23-54.) NG D D D Malfunction of solenoid valve Malfunction of connector Malfunction of the A/T-ECU Replace OK Check the following connectors: B-70, C-28, C-30, C-41 NG Repair OK Harness check D Between solenoid valve and A/T-ECU NG Repair OK Replace the solenoid valve. Check the trouble symptoms. NG Replace the A/T-ECU. AUTOMATIC TRANSMISSION - Troubleshooting Code No. 36, 52 Damper clutch control solenoid valve system Probable cause If the resistance value for the damper clutch control solenoid valve is too large or too small, it is judged that there is a short-circuit or an open circuit in the damper clutch control solenoid valve and diagnosis code No. 36 is output. If the drive duty rate for the damper clutch control solenoid valve is 100 % for a continuous period of 4 seconds or more, it is judged that there is an abnormality in the damper clutch control system and diagnosis code No. 52 is output. When diagnosis code No. 36 is output, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D Damper clutch control solenoid valve check (Refer to P.23-54.) NG Malfunction of the damper clutch control solenoid valve Malfunction of connector Malfunction of the A/T-ECU Replace OK Check the following connectors: B-70, C-28, C-41 NG Repair OK Harness check D Between damper clutch control solenoid valve and A/T-ECU NG Repair OK Replace the damper clutch control solenoid valve. Check the trouble symptoms. NG 23-19 Replace the A/T-ECU. 23-20 AUTOMATIC TRANSMISSION - Troubleshooting Code No. 41 1st gear ratio does not meet the specification Probable cause If the output from the output shaft speed sensor multiplied by the 1st gear ratio is not the same as the output from the input shaft speed sensor after shifting to 1st gear has been completed, diagnosis code No. 41 is output. If diagnosis code No. 41 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D D D D D Malfunction of the Malfunction of the Malfunction of the Malfunction of the Malfunction of the Malfunction of the Noise generated input shaft speed sensor output shaft speed sensor underdrive clutch retainer transfer drive gear or driven gear low and reverse brake system underdrive clutch system L: Refer to the Transmission Workshop Manual. MUT-II Self-Diag code Is the diagnosis code No. 22 output? No MUT-II Self-Diag code Is the diagnosis code No. 23 output? No Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector B-71 and measure voltage between 31 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. Yes Yes NG Code No. 22 Input shaft speed sensor system check (Refer to P.23-16.) Code No. 23 Output shaft speed sensor system check (Refer to P.23-17.) Replace the input shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the underdrive clutch retainer. Check the trouble symptoms. OK NG Eliminate the cause of the noise. Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector B-68 and measure voltage between 32 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. OK A/T overhaul L D Underdrive clutch system check (No. 42, No. 43, or no diagnosis code is output). D Low and reverse brake system check (No. 46 or no diagnosis code is output). NG Replace the output shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the transfer drive gear and driven gear. Check the trouble symptoms. NG Eliminate the cause of the noise. AUTOMATIC TRANSMISSION - Troubleshooting Code No. 42 2nd gear ratio does not meet the specification Probable cause If the output from the output shaft speed sensor multiplied by the 2nd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 2nd gear has been completed, diagnosis code No. 42 is output. If diagnosis code No. 42 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D D D D D Malfunction of the Malfunction of the Malfunction of the Malfunction of the Malfunction of the Malfunction of the Noise generated 23-21 input shaft speed sensor output shaft speed sensor underdrive clutch retainer transfer drive gear or driven gear second brake system underdrive clutch system L: Refer to the Transmission Workshop Manual. MUT-II Self-Diag code Is the diagnosis code No. 22 output? No MUT-II Self-Diag code Is the diagnosis code No. 23 output? No Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector B-71 and measure voltage between 31 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. Yes Yes NG Code No. 22 Input shaft speed sensor system check (Refer to P.23-16.) Code No. 23 Output shaft speed sensor system check (Refer to P.23-17.) Replace the input shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the underdrive clutch retainer. Check the trouble symptoms. OK NG Eliminate the cause of the noise. Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector B-68 and measure voltage between 32 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. OK A/T overhaul L D Underdrive clutch system check (No. 41, No. 43, or no diagnosis code is output). D Second brake system check (No. 44 or no diagnosis code is output). NG Replace the output shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the transfer drive gear and driven gear. Check the trouble symptoms. NG Eliminate the cause of the noise. 23-22 AUTOMATIC TRANSMISSION - Troubleshooting Code No. 43 3rd gear ratio does not meet the specification Probable cause If the output from the output shaft speed sensor multiplied by the 3rd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 3rd gear has been completed, diagnosis code No. 43 is output. If diagnosis code No. 43 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D D D D D Malfunction of the Malfunction of the Malfunction of the Malfunciton of the Malfunction of the Malfunction of the Noise generated input shaft speed sensor output shaft speed sensor underdrive clutch retainer transfer drive gear or driven gear underdrive clutch system overdrive clutch system L: Refer to the Transmission Workshop Manual. MUT-II Self-Diag code Is the diagnosis code No. 22 output? No MUT-II Self-Diag code Is the diagnosis code No. 23 output? No Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector B-71 and measure voltage between 31 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. Yes Yes NG Code No. 22 Input shaft speed sensor system check (Refer to P.23-16.) Code No. 23 Output shaft speed sensor system check (Refer to P.23-17.) Replace the input shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the underdrive clutch retainer. Check the trouble symptoms. OK NG Eliminate the cause of the noise. Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector B-68 and measure voltage between 32 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. OK A/T overhaul L D Underdrive clutch system check (No. 41, No. 42, or no diagnosis code is output). D Overdrive clutch system check (No. 44 or no diagnosis code is output). NG Replace the output shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the transfer drive gear and driven gear. Check the trouble symptoms. NG Eliminate the cause of the noise. AUTOMATIC TRANSMISSION - Troubleshooting Code No. 44 4th gear ratio does not meet the specification Probable cause If the output from the output shaft speed sensor multiplied by the 4th gear ratio is not the same as the output from the input shaft speed sensor after shifting to 4th gear has been completed, diagnosis code No. 44 is output. If diagnosis code No. 44 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D D D D D Malfunction of the Malfunction of the Malfunction of the Malfunction of the Malfunction of the Malfunction of the Noise generated 23-23 input shaft speed sensor output shaft speed sensor underdrive clutch retainer transfer drive gear or driven gear second brake system overdrive clutch system L: Refer to the Transmission Workshop Manual. MUT-II Self-Diag code Is the diagnosis code No. 22 output? No MUT-II Self-Diag code Is the diagnosis code No. 23 output? No Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector B-71 and measure voltage between 31 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform. Yes Yes NG Code No. 22 Input shaft speed sensor system check (Refer to P.23-16.) Code No. 23 Output shaft speed sensor system check (Refer to P.23-17.) Replace the input shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the underdrive clutch retainer. Check the trouble symptoms. OK NG Eliminate the cause of the noise. Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector B-68 and measure voltage between 32 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. OK A/T overhaul L D Second brake system check (No. 42 or no diagnosis code is output). D Overdrive clutch system check (No. 43 or no diagnosis code is output). NG Replace the output shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the transfer drive gear and driven gear. Check the trouble symptoms. NG Eliminate the cause of the noise. 23-24 AUTOMATIC TRANSMISSION - Troubleshooting Code No. 46 Reverse gear ratio specification does not meet the If the output from the output shaft speed sensor multiplied by the reverse gear ratio is not the same as the output from the input shaft speed sensor after shifting to reverse gear has been completed, diagnosis code No. 46 is output. If diagnosis code No. 46 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. Probable cause D D D D D D D Malfunction of the Malfunction of the Malfunction of the Malfunciton of the Malfunction of the Malfunction of the Noise generated input shaft speed sensor output shaft speed sensor underdrive clutch retainer transfer drive gear or driven gear low and reverse brake system reverse clutch system L: Refer to the Transmission Workshop Manual. MUT-II Self-Diag code Is the diagnosis code No. 22 output? No MUT-II Self-Diag code Is the diagnosis code No. 23 output? No Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector B-71 and measure voltage between 31 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. Yes Yes NG Code No. 22 Input shaft speed sensor system check (Refer to P.23-16.) Code No. 23 Output shaft speed sensor system check (Refer to P.23-17.) Replace the input shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the underdrive clutch retainer. Check the trouble symptoms. OK NG Eliminate the cause of the noise. Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector B-68 and measure voltage between 32 and 43 at the A/T-ECU. D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3 (Voltage) OK: A waveform such as the one shown on P.23-45 (Inspection Procedure Using an Oscilloscope) is output (flalshing between 0 ¬® 5V) and there is no noise appearing in the waveform. OK A/T overhaul L D Low and reverse brake system check (No. 41 or no diagnosis code is output). D Reverse clutch system check (No diagnosis code is output). NG Replace the output shaft speed sensor. Check the trouble symptoms. NG A/T overhaul L D Replace the transfer drive gear and driven gear. Check the trouble symptoms. NG Eliminate the cause of the noise. AUTOMATIC TRANSMISSION - Troubleshooting Code No. 51 Abnormal communication with engine-ECU Abnormal communication with TCL-ECU Probable cause If normal communication is not possible for a continuous period of 1 second or more when the ignition switch is at the ON position, the battery voltage is 10 V or more and the engine speed is 450 r/min or more, diagnosis code No. 51 is output. Diagnosis code No. 51 is also output if the data being received is abnormal for a continuous period of 4 seconds under the same conditions. D D D D Check the following connectors: D C-30, C-34, C-38 <4G6-vehicles without TCL> D C-30, C-37 <6A1-vehicles without TCL> D C-10, C-30, C-51 OK Harness check D Between engine-ECU and A/T-ECU D Between TCL-ECU and A/T-ECU NG NG Malfunction of connector Malfunction of the engine-ECU Malfunction of the TCL-ECU Malfunction of the A/T-ECU Repair Repair OK Check the trouble symptoms. NG Replace the engine-ECU. Replace the TCL-ECU. NG Check the trouble symptoms. Replace the A/T-ECU. Code No. 54 A/T control relay system Probable cause If the A/T control relay voltage is less than 7 V after the ignition switch has been turned ON, it is judged that there is an open circuit or a short-circuit in the A/T control relay earth and diagnosis code No. 54 is output. Then the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz. D D D Check the A/T control relay. (Refer to P.23-53.) NG Malfunction of the A/T control relay Malfunction of connector Malfunction of the A/T-ECU Replace OK Check the following connectors: B-30, C-28, C-30, C-41, C-45 NG Repair OK Harness check D Between control relay and body earth D Between control relay and battery D Between control relay and A/T-ECU OK Check the trouble symptoms. NG NG 23-25 Repair Replace the A/T-ECU. 23-26 AUTOMATIC TRANSMISSION - Troubleshooting Code No. 56 N range lamp system Probable cause If the N range signal is off after an N range lamp illumination instruction (ON instruction) has been given, it is judged that there is a short-circuit in the N range lamp earth and diagnosis code No. 56 is output. D D D Check the N range lamp bulb (Refer to GROUP 52A - Instrument Panel.) NG Malfunction of the N range lamp bulb Malfunction of connector Malfunction of the A/T-ECU Replace OK Check the following connectors: C-30, C-90, D-02 NG Repair OK Harness check D Between N range lamp bulb and A/T-ECU OK Check the trouble symptoms. NG NG Repair Replace the A/T-ECU. Code No. 71 Malfunction of A/T-ECU Probale cause There is an abnormality in the A/T-ECU. The transmission is locked into 3rd gear as a fail-safe measure. D Malfunction of the A/T-ECU Replace the A/T-ECU. INSPECTION CHART FOR TROUBLE SYMPTOMS 23100800267 Trouble symptom Inspection procedure No. Reference page Communication with MUT-II is not possible 1 23-27 Driving impossible Starting impossible 2 23-28 Does not move forward 3 23-28 Does not reverse 4 23-29 Does not move (forward or reverse) 5 23-29 Engine stalling when shifting 6 23-30 Shocks when changing from N to D and large time lag 7 23-30 Shocks when changing from N to R and large time lag 8 23-31 Shocks when changing from N to D, N to R and large time lag 9 23-32 Shocks and running up 10 23-32 Malfunction when starting Malfunction when shifting 23-27 AUTOMATIC TRANSMISSION - Troubleshooting Trouble symptom Inspection procedure No. Reference page All points 11 23-33 Some points 12 23-34 Does not shift No diagnosis codes 13 23-34 Malfunction while driving Poor acceleration 14 23-35 Vibration 15 23-35 Inhibitor switch system 16 23-36 Mode control switch system 17 23-36 Idle position switch system 18 23-37 Dual pressure switch system 19 23-37 Vehicle speed sensor system 20 23-38 Auto-cruse-ECU signal system 21 23-38 Displaced shifting points INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS INSPECTION PROCEDURE 1 Communication with MUT-II is not possible Probable cause If communication with the MUT-II is not possible, the cause is probably a defective diagnosis line or the A/T-ECU is not functioning. D D D Is communication with other systems possible using the MUT-II? Yes Check the continuity and voltage of the A/T-ECU connector. D Disconnect the connector C-28 and check at harness side. D Voltage between terminals No. 11, 24 and earth OK: Battery voltage D Voltage between C-28 terminals Nos.12, 13, 25, 26, C-30 terminal No. 72 and earth OK: Continuity OK No Harness check D Between diagnosis connector and A/T-ECU OK Check the trouble symptoms. Check the diagnosis line with MUT-II, and repair if necessary. NG Check the following connectors: C-28, C-30, C-45, C-83, C-131, C-134 OK Harness check power supply and D Between A/T-ECU D Between earth and A/T-ECU OK Check the trouble symptoms. NG Check the following connectors: C-20, C-28, C-30, C-49, C-66, C-83 OK Malfunction of diagnosis line Malfunction of connector Malfunction of the A/T-ECU NG NG NG Repair Repalce the A/T-ECU. Repair Replace the A/T-ECU. NG NG Repair Repair 23-28 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 2 Starting impossible Probable cause Starting is not possible when the selector lever is in P or N range.In such cases, the cause is probably a defective engine system, torque converter or oil pump. D D D Malfunction of the engine system Malfunction of the torque converter Malfunction of the oil pump L: Refer to the Transmission Workshop Manual. Check the engine system. D Control system, ignition system, fuel system, main engine system OK Torque converter check D Check for incorrect installation (inserted at an angle, etc.) and for damaged splines. NG NG Repair, replace Repair if possible. If the splines are damaged and repairs are not possible, replace the torque converter assembly. OK Repalce the oil pump assembly. L (The oil pump cannot be disassembled.) INSPECTION PROCEDURE 3 Does not move (forward) Probable cause If the vehicle does not move forward when the selector lever is shifted from N to D, 3, 2 or L range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the underdrive clutch or valve body. D D D D Abnormal line Malfunction of Malfunction of Malfunction of pressure the underdrive solenoid valve the underdrive clutch the valve body L: Refer to the Transmission Workshop Manual. MUT-II Actuator test D No. 2 Underdrive solenoid valve OK: Sound of operation can be heard. OK Hydraulic pressure test (Refer to P.23-56.) D Measure the hydraulic pressure for each element when in L range. Standard value: Refer to P.23-57. NG NG OK OK Underdrive clutch system check L D Remove the transmission assembly, valve body cover and valve body. NG D Pistons should operate and pressure should be maintained when air is blown through the underdrive clutch oil hole in the transmission case. Replace the solenoid valve. L Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. Underdrive clutch check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. AUTOMATIC TRANSMISSION - Troubleshooting 23-29 INSPECTION PROCEDURE 4 Does not reverse Probable cause If the vehicle does not reverse when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal pressure in the reverse clutch or low and reverse brake or a malfunction of the reverse clutch, low and reverse brake or valve body. D D D D D D Abnormal reverse clutch pressure Abnormal low and reverse brake pressure Malfunction of the low and reverse solenoid valve Malfunction of the reverse clutch Malfunction of the low and reverse brake Malfunction of the valve body L: Refer to the Transmission Workshop Manual. MUT-II Actuator test D No. 1 Low and reverse solenoid valve OK: Sound of operation can be heard. OK Hydraulic pressure check (Refer to P.23-56.) D Measure the reverse clutch pressure in R range. Standard value: Refer to P.23-57. OK Hydraulic pressure check (Refer to P.23-56.) D Measure the low and reverse brake pressure in R range. Standard value: Refer to P.23-57. NG Replace the low and reverse solenoid valve. L NG NG OK Reverse clutch system and low and reverse brake system check OK L D Remove the transmission assembly, valve body cover and valve body. D Pistons should operate and pressure should be maintained NG when air is blown through the reverse clutch oil hole and the low reverse brake oil hole in the transmission case. Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. Reverse clutch and low and reverse brake check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. INSPECTION PROCEDURE 5 Does not move (forward or reverse) Probable cause If the vehicle does not move forward or reverse when the selector lever is shifted to any position while the engine is idling, the cause is probably abnormal line pressure, or a malfunction of the power train, oil pump or valve body. D D D D Abnormal line Malfunction of Malfunction of Malfunction of pressure power train the oil pump the valve body L: Refer to the Transmission Workshop Manual. Hydraulic pressure check (Refer to P.23-56.) D Measure the hydraulic pressure for each element when moving forward and back. Standard value: Refer to P.23-57. NG Replace the oil pump assembly. L (The oil pump cannot be disassembled.) OK NG Power train check L D Disassemble the transmission, check the condition of the planetary carrier, output shaft and differential, etc. Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. 23-30 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 6 Engine stalling when shifting Probable cause If the engine stalls when the selector lever is shifted from N to D or R range while the engine is idling, the cause is probably a malfunction of the engine system, damper clutch solenoid valve, valve body or torque converter (damper clutch malfunction). D D D D Malfunction of the engine system Malfunction of the damper clutch control solenoid valve Malfunction of the valve body Malfunction of the torque converter (Malfuction of the damper clutch) L: Refer to the Transmission Workshop Manual. Engine system check D Check the control system, ignition system, fuel system and main system. NG Repair, replace OK Replace the damper clutch control solenoid valve. Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. NG Repalce the torque converter. INSPECTION PROCEDURE 7 Shocks when changing from N to D and large time lag Probable cause If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range while the engine is idling, the cause is probably abnormal underdrive clutch pressure or a malfunction of the underdrive clutch, valve body or idle position switch. D D D D D Abnormal underdrive clutch pressure Malfunction of the underdrive solenoid valve Malfunction of the underdrive clutch Malfunction of the valve body Malfunction of the idle position switch L: Refer to the Transmission Workshop Manual. MUT-II Actuator test D No. 2 Underdrive solenoid valve OK: Sound of operation can be heard. OK NG Replace the underdrive solenoid valve. L When starting Shocks sometimes occur When does the shock occur? No When shifting Hydraulic pressure test (Refer to P.23-56.) D Measure the underdrive clutch pressure when shifting from N to D. Standard value: Refer to P.23-57. NG Underdrive clutch system check L D Remove the transmission assembly, valve body cover and valve body. D Pistons should operate and pressure should be maintained when air is blown through the underdrive clutch oil hole in the transmission case. NG Underdrive clutch check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. MUT-II Data list D No. 64 Idle position switch OK: Turns from on to off when the accelerator pedal is slightly depressed from the fully closed position. OK OK OK Yes NG Idle position switch check D INSPECTION PROCEDURE 18 - Idle position switch system check (Refer to P.23-37.) Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. AUTOMATIC TRANSMISSION - Troubleshooting 23-31 INSPECTION PROCEDURE 8 Shocks when changing from N to R and large time lag Probable cause If abnormal shocks or a time lag of 2 seconds or more occurs when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal reverse clutch pressure or low and reverse brake pressure, or a malfunction of the reverse clutch, low and reverse brake, valve body or idle position switch. D D D D D D D Abnormal reverse clutch pressure Abnormal low and reverse brake pressure Malfunction of the low and reverse solenoid valve Malfunction of the reverse clutch Malfunction of the low and reverse brake Malfunction of the valve body Malfunction of the idle position switch L: Refer to the Transmission Workshop Manual. MUT-II Actuator test D No. 1 Low and reverse solenoid valve OK: Sound of operation can be heard. OK NG Replace the low and reverse solenoid valve. L When starting Shocks sometimes occur When does the shock occur? No When shifting Hydraulic pressure test (Refer to P.23-56.) D Measure the reverse clutch pressure in R range. Standard value: Refer to P.23-57. NG OK Hydraulic pressure test (Refer to P.23-56.) D Measure the low and reverse brake pressure in R range. Standard value: Refer to P.23-57. OK Reverse clutch system and low reverse brake system check L D Remove the transmission assembly, valve body cover and valve body. D Pistons should operate and pressure should be maintained when air is blown through the reverse clutch oil hole and low and reverse brake oil hole in the transmission case. NG Reverse clutch and low reverse brake check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. MUT-II Data list D No. 64 Idle position switch OK: Turns from on to off when the accelerator pedal is slightly depressed from the fully closed position. OK NG OK Yes NG Idle position switch check D INSPECTION PROCEDURE 18 - Idle position switch system check (Refer to P.23-37.) Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. 23-32 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 9 Shocks when changing from N to D, N to R and large time lag Probable cause If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range and from N to R range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the oil pump or valve body. D D D Abnormal line pressure Malfunction of the oil pump Malfunction of the valve body L: Refer to the Transmission Workshop Manual. Hydraulic pressure test (Refer to P.23-56.) D Measure the hydraulic pressure for each element when in D range and R range. Standard value: Refer to P.23-57. OK When does the shock occur? NG Adjust the line pressure. (Refer to P.23-62.) NG When starting When shifting Replace the oil pump assembly. L (The oil pump cannot be disassembled.) Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. INSPECTION PROCEDURE 10 Shocks and running up Probable cause If shocks occur when driving due to upshifting or downshifting and the transmission speed becomes higher than the engine speed, the cause is probably abnormal line pressure or a malfunction of a solenoid valve, oil pump, valve body or of a brake or clutch. D D D D D Abnormal line Malfunction of Malfunction of Malfunction of Malfunction of pressure each solenoid valve the oil pump the valve body each brake or each clutch L: Refer to the Transmission Workshop Manual. MUT-II Actuator test D No. 1 Low and reverse solenoid valve D No. 2 Underdrive solenoid valve D No. 3 Second solenoid valve D No. 4 Overdrive solenoid valve OK: Sound of operation can be heard. OK Adjust the line pressure. (Refer to P.23-62.) OK Clutch and brake check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. NG NG Replace the solenoid valve. Replace the oil pump assembly. L (The oil pump cannot be disassembled.) NG Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. 23-33 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 11 All points (Displaced shifting points) Probable cause If all shift points are displaced while driving, the cause is probably a malfunction of the output shaft speed sensor, TPS or of a solenoid valve. D D D D D D Malfunction of Malfunction of Malfunction of Abnormal line Malfunction of Malfunction of the output shaft speed sensor the throttle position sensor each solenoid valve pressure the valve body the A/T-ECU L: Refer to the Transmission Workshop Manual. MUT-II Data list D No. 23 Output shaft speed sensor OK: Increases in proportion to vehicle speed. OK MUT-II Data list D No. 11 TPS/APS OK: Increases in proportion to accelerator pedal opening angle OK MUT-II Data list D No. 31 Low and reverse solenoid valve duty % D No. 32 Underdrive solenoid valve duty % D No. 33 Second solenoid valve duty % D No. 34 Overdrive solenoid valve duty % OK: Refer to the table below. OK Adjust the line pressure. (Refer to P.23-62.) NG Code No. 23 - Output shaft speed sensor system (Refer to P.23-17.) NG Code No. 11, 12, 14 TPS/APS system check (Refer to P.23-15.) NG Replace the solenoid valve. L NG Repalce the A/T-ECU. NG Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. No. 31 No. 32 No. 33 No. 34 Driving at constant speed in 1st gear 0% 0% 100 % 100 % Driving at constant speed in 2nd gear 100 % 0% 0% 100 % Driving at constant speed in 3rd gear 100 % 0% 100 % 0% Driving at constant speed in 4th gear 100 % 100 % 0% 0% 23-34 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 12 Some points (Displaced shifting points) Probable cause If some of the shift points are displaced while driving, the cause is probably a malfunction of the valve body, or it is related to control and is not an abnormality. D Malfunction of the valve body L: Refer to the Transmission Workshop Manual. INVECS-II CANCEL COMMAND D Use the MUT-II to stop the INVECS-II function. Does standard shifting occur normally? No Yes Does the problem occur only when the automatictransmissionfluidtemperature is - 29_C or lower or 125_C or higher? No Yes It is related to control and is not an abnormality. Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. INSPECTION PROCEDURE 13 No diagnosis codes (Does not shift) Probable cause If shifting does not occur while driving and no diagnosis codes are output, the cause is probably a malfunction of the inhibitor switch, or A/T-ECU. D D Does the transmission remain in 3rd gear with selector lever in position D ? No Yes Is backup power being supplied to the A/T-ECU? No OK Yes Is power being supplied to the A/T-ECU? No Power supply circuit check D Pay particular attention to open circuits in the harnesses, poor connector connections and open circuits in fuses. D If there is a blown fuse, investigate why a short-circuit has occurred and then replace the fuse. MUT-II Data list D No. 61 Inhibitor switch OK: A/T-ECU input signal and selector lever position should match. Yes MUT-II Data list D No. 62 Hold mode signal OK: The signal should change when the mode control switch position is changed. OK Replace the A/T-ECU. Malfunction of the inhibitor switch Malfunction of the A/T-ECU NG NG Inhibitor switch check D INSPECTION PROCEDURE 16 Inhibitor switch system check. (Refer to P.23-36.) Mode control switch check D INSPECTION PROCEDURE 17 Mode control switch system check (Refer to P.23-36.) AUTOMATIC TRANSMISSION - Troubleshooting 23-35 INSPECTION PROCEDURE 14 Poor acceleration Probable cause If acceleration is poor even if downshifting occurs while driving, the cause is probably a malfunction of the engine system or of a brake or clutch. D D Malfunction of the engine system Malfunction of the brake or clutch L: Refer to the Transmission Workshop Manual. Engine system check D Check the control system, ignition system, fuel system and main system. NG Replace, repair OK Brake or clutch check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. INSPECTION PROCEDURE 15 Vibration Probable cause If vibration occurs when driving at constant speed or when accelerating and deceleration in top range, the cause is probably abnormal damper clutch pressure or a malfunction of the engine system, damper clutch control solenoid valve, torque converter or valve body. D D D D D Abnormal damper clutch pressure Malfunction of the engine system Malfunction of the damper clutch control solenoid valve Malfunction of the torque converter Malfunction of the valve body L: Refer to the Transmission Workshop Manual. MUT-II Actuator test D No. 6 Damper clutch control solenoid valve OK: Sound of operation can be heard. OK Does the problem occur even when the oil temperature sensor connector is disconnected? NG Yes No Hydraulic pressure test (Refer to P.23-56.) D Measure the damper clutch pressure. Standard value: Refer to P.23-57. OK Replace the torque converter assembly. NG Replace the damper clutch control solenoid valve. L Engine system check D Check the control system, ignition system, fuel system and main system. Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. 23-36 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 16 Inhibitor switch system Probable cause The cause is probably a malfunction of the inhibitor switch circuit, ignition switch circuit or a defective A/T-ECU. D D D D Inhibitor switch check (Refer to P.23-49.) OK Check the voltage of the inhibitor switch connector B-72. D Disconnect the connector and measure at the harness side. D Voltage between terminal No. 8 and earth OK: Battery voltage OK Check the following connectors: B-72, C-30, C-47, C-48 OK Harness check D Between inhibitor A/T-ECU connector NG Check the trouble symptoms. the inhibitor switch the ignition switch connector the A/T-ECU Check the following connectors: C-49, C-83, C-131, C-134 OK Harness check D Between inhibitor switch and ignition switch NG NG NG Repair Repair OK Repair Check the trouble symptoms. NG and OK of of of of Replace NG NG switch Malfunction Malfunction Malfunction Malfunction Repair NG Ignition switch check (Refer to GROUP54 - Ignition Switch.) Repalce the A/T-ECU. INSPECTION PROCEDURE 17 Mode control switch system Probable cause The cause is probably a defective mode control switch circuit or a defective A/T-ECU. D D D Mode control switch check (Refer to P.23A-65.) OK Check the voltage of the A/T-ECU connector C-30. D Disconnect the connector and check at the harness side. D Ignition switch: ON D Select the HOLD mode. D Voltage between terminal No. 70 and earth OK: Battery voltage NG NG Malfunction of the mode control switch Malfunction of connector Malfunction of the A/T-ECU Replace Check the following connectors: C-49, C-83, C-89, C-131, C-134 OK Harness check. D Between mode control switch and A/T-ECU Harness check D Between mode control switch and ignition switch OK Check the trouble symptoms. NG Check the following the connector: C-30 Check the trouble symptoms. NG Repair Repair OK OK OK NG Ignition switch check (Refer to GROUP 54 - Ignition Switch.) NG Replace the A/T-ECU. NG Repair 23-37 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 18 Idle position switch system Probable cause The cause is probably a defective idle position switch circuit or a defective A/T-ECU. D D D NG Idle position switch check (Refer to GROUP 13A - On-vehicle Service.) Malfunction of the idle position switch Malfunction of connector Malfunction of the A/T-ECU Replace the throttle position sensor. OK Check the following connectors: B-07 , B-41 , C-29 NG Repair OK NG Harness check D Between idle position switch and A/T-ECU OK NG Check the trouble symptoms. Repair Replace the A/T-ECU. INSPECTION PROCEDURE 19 Dual pressure switch system Probable cause The cause is probably a defective dual pressure switch circuit or a defective A/T-ECU. D D D D Dual pressure switch check (Refer to GROUP 55 - On-vehicle service.) OK Check the voltage of the A/T-ECU connector C-28. D Disconnect the connector and check at the harness side. D Ignition switch: ON D A/C switch: ON D Voltage between terminal No. 10 and earth OK: Battery voltage NG A/C system check (Refer to GROUP 55 - Troubleshooting.) NG OK Malfunction Malfunction Malfunction Malfunction of of of of the dual pressure switch connector A/C system the A/T-ECU Replace Check the following connectors: B-30, C-28 NG Repair OK Check the trouble symptoms. NG Check the A/C system. (Refer to GROUP 55 - Troubleshooting.) OK Replace the A/T-ECU. NG Repair 23-38 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 20 Vehicle speed sensor system Probable cause The cause is probably a defective vehicle speed sensor circuit or a defective A/T-ECU. D D D Check the vehicle speed sensor. (Refer to GROUP 54 - Combination Meters.) NG Malfunction of the vehicle speed sensor Malfunction of connector Malfunction of the A/T-ECU Replace OK 1. NG Measure at the vehicle speed sensor connector B-67. D Disconnect the connector, and measure at the harness side. 2. NG 1. Voltage between 1 and earth (Ignition switch: ON) OK: Battery voltage 2. Voltage between 3 and earth (Ignition switch: ON) 3. NG OK: 4.8 - 5.2 V 3. Continuity between 2 and earth OK: Continuity OK Check the connector: B-67 following NG Repair Repair Check trouble symptom. NG NG Repair Check the ignition switch. (Refer to GROUP 54 - Ignition switch.) Check trouble symptom. Check the harness wire between the engine-ECU and the vehicle speed sensor connector. OK NG OK Check the harness wire between the vehicle speed sensor and ignition switch connector. OK OK NG Check the following connectors: C-90, C-131, C-135 NG Check the connectors: C-30, C-48 Repair following NG Repair OK Check trouble symptom. NG Replace the engine-ECU. Check the harness wire between the engine-ECU and the vehicle speed sensor connector. OK NG Repair Replace the engine-ECU. Check the harness wire between the vehicle speed sensor and the earth, and repair if necessary. INSPECTION PROCEDURE 21 Auto-cruise-ECU signal system Probable cause The cause is probably a defective auto-cruise signal line circuit or a defective A/T-ECU. D D D Auto-cruise system check (Refer to GROUP 17 - Troubleshooting.) NG Malfunction of connector Malfunction of the A/T-ECU Malfunction of the auto-cruise-ECU Repair OK Check the following connectors: C-28, C-82, C-83 OK Harness check D Between auto-cruise-ECU and A/T-ECU NG Repair NG OK Repair Replace the A/T-ECU. 23-39 AUTOMATIC TRANSMISSION - Troubleshooting DATA LIST REFERENCE TABLE Item No. Check item Check requirement 11 Engine: Stopped Selector lever position: P Throttle position sensor Accelerator pedal position sensor 23100810208 Normal value Accelerator pedal: Released 400 - 1,000 mV Accelerator pedal: Halfly depressed Gradually rises from the above value Accelerator pedal: Depressed 4,500 - 5,000 mV 15 Oil temperature sensor Warming up Drive for 15 minutes or more so that the automatic transmission fluid temperature becomes 70 - 90 _C. Gradually rises to 70 - 90 _C 21 Crank angle sensor Engine: Idling Selector lever position: P Accelerator pedal: Released 550 - 900 rpm Accelerator pedal: Halfly depressed Gradually rises from the above value 22 Input shaft speed sensor Selector lever position: 3 Driving at constant speed of 50 km/h in 3rd gear 1,800 - 2,100 rpm 23 Output shaft speed sensor Selector lever position: 3 Driving at constant speed of 50 km/h in 3rd gear 1,800 - 2,100 rpm 25 Wide open throttle switch Accelerator pedal position Released OFF Depressed ON Stop lamp switch Ignition switch: ON Engine: Stopped Brake pedal: Depressed ON Brake pedal: Released OFF Selector lever position: 3 Idling with 1st gear (Vehicle stopped) 0 km/h Driving at constant speed of 50 km/h in 3rd gear 50 km/h 10 km/h in 1st gear No. 31: 0 %, No. 32: 0 %, No. 33: 100 %, No. 34: 100% 26 29 Vehicle speed sensor 31 Low and reverse solenoid valve duty % Selector lever position: L, 2, 3, D 32 Underdrive solenoid valve duty % 30 km/h in 2nd gear No. 31: 100 %, No. 32: 0 %, No. 33: 0 %, No. 34: 100% 33 Second solenoid valve duty % 50 km/h in 3rd gear No. 31: 100 %, No. 32: 0 %, No. 33: 100 %, No. 34: 0% 34 Overdrive solenoid valve duty % 70 km/h in 4th gear No. 31: 100 %, No. 32: 100 %, No. 33: 0 %, No. 34: 0% 23-40 AUTOMATIC TRANSMISSION - Troubleshooting Item No. Check item Check requirement 36 Selector lever position: 3 52 Damper clutch control solenoid valve duty % Amount of damper clutch slippage Selector lever position: 3 Normal value Driving at 50 km/h in 3rd gear with accelerator released 0% Driving at constant speed of 70 km/h in 3rd gear Approx. 70 - 90 % Driving at 50 km/h in 3rd gear with accelerator fully closed Approx. 100 - 300 rpm* Driving at constant speed of 70 km/h in 3rd gear Approx. 0 - 10 rpm 54 Control relay output voltage Ignition switch : OFF Ignition switch: ON ® OFF Battery voltage (mV) ® 0 mV 57 Engine volumetric efficiency Selector lever position: N N range with accelerator pedal released ® depressed. Data changes 61 Inhibitor switch Ignition switch: ON Engine: Stopped Selector lever position: P P Selector lever position: R R Selector lever position: N N Selector lever position: D D Selector lever position: 3 3 Selector lever position: 2 2 Selector lever position: L L Mode control switch position HOLD ON AUTO OFF Selector lever position: L, 2, 3, D Driving at constant speed of 10 km/h in 1st gear 1st Driving at constant speed of 30 km/h in 2nd gear 2nd Driving at constant speed of 50 km/h in 3rd gear 3rd Driving at constant speed of 70 km/h in 4th gear 4th Engine: Idling Selector lever position: N Accelerator pedal: Released ON Accelerator pedal: Halfly depressed OFF Engine: Idling Selector lever position: N A/C switch: ON ON A/C switch: OFF OFF 62 63 64 65 HOLD mode signal Shift position Idle position switch Dual pressure switch 23-41 AUTOMATIC TRANSMISSION - Troubleshooting Item No. Check item Check requirement 66 While auto-cruise operating Auto-cruse-ECU signal Normal value Plain road OFF Sloping road ON NOTE *: The damper clutch is released when the accelerator is fully closed (Idle position switch: ON). ACTUATOR TEST JUDGEMENT VALUE 23100820065 Item No. Check item Test content Check requirement Normal value 1 Low reverse solenoid valve 2 Underdrive solenoid valve Second solenoid valve 4 Overdrive solenoid valve 6 Damper clutch control solenoid valve 12 A/T control relay Ignition switch: ON Selector lever position: P Engine: 0 r/min Vehicle speed: 0 km/h (Vehicle stopped) Throttle (Accelerator) opening voltage: Less than 0 V Idle switch: ON The operation sound should be audible when the solenoid valve is driven. 3 Drive the solenoid valve specified by the MUT-II at 50 % duty for 5 seconds. No other solenoid valve should be energised. Control relay is OFF for 3 seconds. Data list No. 54 (1) During test: 0 mV (2) Normal: Battery voltage [mV] INVECS-II CANCEL COMMAND 23100950023 Item No. Item Content Remarks 14 INVECS-II Stop the INVECS-II control and change gears according to the standard shift pattern. Use this function when carrying out procedure 8 in the road tests. 23-42 AUTOMATIC TRANSMISSION - Troubleshooting CHECK AT A/T-ECU TERMINALS 23100840207 Terminal No. Check item Check requirement Standard value 1 Underdrive solenoid valve Selector lever position: D (1st gear) Battery voltage Selector lever position: P Approx.7 - 9 V Ignition switch: OFF 0V Ignition switch: ON Battery voltage Ignition switch: OFF 0V Ignition switch: ON Battery voltage No OD-OFF request Battery voltage OD-OFF request 0V A/C switch: OFF 0V A/C switch: ON Battery voltage Ignition switch: OFF 0V Ignition switch: ON Battery voltage 2 3 8 10 11 Solenoid valve power supply Solenoid valve power supply Auto-cruse control unit A/C compressor load signal Power supply 12 Earth Always 0V 13 Earth Always 0V 14 Overdrive solenoid valve Selector lever position: D (3rd gear) Battery voltage Selector lever position: P Approx. 7 - 9 V Damper clutch control solenoid valve Selector lever position: L (1st gear) Battery voltage Selector lever position: 3 (50 km/h in 3rd gear) Other than battery voltage Second solenoid valve Selector lever position: 2 (2nd gear) Battery voltage Selector lever position: P Approx. 7 - 9 V Ignition switch: ON (except during shifting) 4 - 5V 15 16 21 Engine-ECU torque reduction request signal 23-43 AUTOMATIC TRANSMISSION - Troubleshooting Terminal No. Check item Check requirement Standard value 23 Diagnosis control - - 24 Power supply Ignition switch: OFF 0V Ignition switch: ON Battery voltage 25 Earth Always 0V 26 Earth Always 0V 31 Input shaft speed sensor Measure between terminal No. 31 and No. 43 by an oscilloscope. Engine: 2,000 r/min Selector lever position: 3 Refer to P.23-45, Oscilloscope inspection procedure. 32 Output shaft speed sensor Measure between terminal No. 32 and No. 43 by an oscilloscope. Engine: 2,000 r/min Selector lever position: 3 Refer to P.23-45, Oscilloscope inspection procedure. 33 Crank angle sensor Engine: Idling 2.0 - 2.4 V 36 Idle position switch Engine: Idling 0V Engine: Other than idling 5V 38 Back up power suuply Ignition switch: OFF Battery voltage 43 Sensor earth Always 0V 44 Oil temperature sensor ATF temperature: 25 _C 3.8 - 4.0 V ATF temperature: 80 _C 2.3 - 2.5 V Throttle position sensor (TPS) Accelerator pedal position sensor (APS) Accelerator pedal: Released (Engine stopped) 0.5 - 1.0 V Accelerator pedal: Depressed (Engine stopped) 4.5 - 5.0 V 53 Communication with engine-ECU Communication with TCL-ECU Engine: Idling Selector lever position: D Other than 0 V 54 Communication with engine-ECU Communication with TCL-ECU Engine: Idling Selector lever position: D Other than 0 V 55 Inhibitor switch P Selector lever position: P Battery voltage Selector lever position: Other than above 0V Selector lever position: N Battery voltage Selector lever position: Other than above 0V Selector lever position: 3 Battery voltage Selector lever position: Other than above 0V 45 56 57 Inhibitor switch N Inhibitor switch 3 23-44 AUTOMATIC TRANSMISSION - Troubleshooting Terminal No. Check item Check requirement Standard value 58 Inhibitor switch L Selector lever position: L Battery voltage Selector lever position: Other than above 0V Brake pedal: Depressed Battery voltage Brake pedal: Released 0V Selector lever position: D (1st gear) Battery voltage Selector lever position: D (2nd gear) Approx. 7 - 9 V 59 62 Stop lamp switch Low and reverse solenoid valve 63 Diagnosis output Normal (No diagnosis code output) 0 ® 5 V flashing 65 Wide open throttle switch Accelerator pedal: Released 4.5 - 5.5 V Accelerator pedal: Depressed Less than 0.4 V Selector lever position: R Battery voltage Selector lever position: Other than above 0V Selector lever position: D Battery voltage Selector lever position: Other than above 0V Selector lever position: 2 Battery voltage Selector lever position: Other than above 0V When stopped 0V Move forward slowly 0 ® 5 V flashing Select HOLD mode Battery voltage Select AUTO mode 0V Ignition switch: OFF 0V Ignition switch: ON Battery voltage Ignition switch: ON 0V 66 67 68 69 70 71 72 Inhibitor switch R Inhibitor switch D Inhibitor switch 2 Vehicle speed sensor Mode control switch A/T control relay Earth AUTOMATIC TRANSMISSION - Troubleshooting OSCILLOSCOPE INSPECTION PROCEDURE 23-45 23100850064 Check item Check requirement Crank angle sensor Selector lever position: N Idling (Vehicle stopped) Waveform A Input shaft speed sensor Selector lever position: 3 Driving at constant speed of 50 km/h in 3rd gear (Engine: 1,800 - 2,100 r/min) Waveform B Ignition switch: ON Selector lever position: P Engine: 0 r/min Vehicle speed: 0 km/h (Vehicle stopped) Throttle (Accelerator) opening angle: Less than 1 V Idle switch: ON Force drive each solenoid valve (Actuator test) Waveform C Output shaft speed sensor Normal condition (Waveform sample) Vehicle speed sensor Low reverse solenoid valve Underdrive solenoid valve Second solenoid valve Overdrive solenoid valve Damper clutch control solenoid valve Waveform sample Waveform A Waveform B (V) Waveform C (V) 60 (V) 5 5 40 20 0 0 (ms) (ms) 0 (ms) 23-46 AUTOMATIC TRANSMISSION - On-vehicle Service ON-VEHICLE SERVICE 23100090237 ESSENTIAL SERVICE AUTOMATIC TRANSMISSION FLUID CHECK 1. Drive the vehicle until the fluid temperature rises to the normal temperature (70 - 80_C). 2. Park the vehicle on a level surface. 3. Move the selector lever through all positions to fill the torque converter and the hydraulic circuits with fluid, and then move the selector lever to the N position. 4. After wiping off any dirt around the oil level gauge, remove the oil level gauge and check the condition of the fluid. NOTE If the fluid smells as if it is burning, it means that the fluid has been contaminated by the particles from the bushes and friction materials, a transmission overhaul and flushing the cooler line may be necessary. 5. Check that the fluid level is at the HOT mark on the oil level gauge. If the fluid level is lower than this, pour in more fluid until the level reaches the HOT mark. Automatic transmission fluid: Dia Queen ATF SP II or equivalent NOTE If the fluid level is low, the oil pump will draw in air along with the fluid, which will cause bubbles to form inside the hydraulic circuit. This will in turn cause the hydraulic pressure to drop, which will result in late shifting and slipping of the clutches and brakes. If there is too much fluid, the gears can churn it up into foam and cause the same conditions that can occur with low fluid levels. In either case, air bubbles can cause overheating and oxidation of the fluid which can interfere with normal valve, clutch, and brake operation. Foaming can also result in fluid escaping from the transmission vent, in which case it may be mistaken for a leak. 6. Securely insert the oil level gauge. 7. The fluid and oil filters should always be replaced in the following conditions: When troubleshooting the transmission When overhauling the transmission When the oil is noticeably dirty or deteriorates (driving under the severe condition) Furthermore, the oil filters are special filters which are only to be used for the automatic transmission. AUTOMATIC TRANSMISSION - On-vehicle Service 23-47 AUTOMATIC TRANSMISSION FLUID REPLACEMENT 23100100251 If you have a fluid changer, use this changer to replace the fluid. If you do not have a fluid changer, replace the fluid by the following procedure. 1. Disconnect the hose shown in the illustration which connects the transmission and the oil cooler (inside the radiator). 2. Start the engine and let the fluid drain out. Running conditions: N range with engine idling Caution The engine should be stopped within one minute after it is started. If the fluid has all drained out before then, the engine should be stopped at that point. Discharge volume: Approx. 3.5 L 3. Remove the drain plug from the bottom of the transmission case to drain the fluid. Discharge volume: Approx. 2.0 L 4. Replace the oil filters. (Refer to P.23-48.) 5. Install the drain plug via a new gasket, and tighten it to the specified torque. Tightening torque: 32 Nm 6. Pour the new fluid in through the oil filler tube. Adding volume: Approx. 5.5 L Caution Stop pouring if the full volume of fluid cannot be poured in. 7. Repeat the procedure in step 2. NOTE Drain the fluid from the cooler hose 7 L at least. Then drain the fluid a little and check the fluid for dirt. If it has been contaminated, repeat the steps 6 and 7. 8. Pour the new fluid in through the oil filler tube. Adding volume: Approx. 3.5 L 23-48 AUTOMATIC TRANSMISSION - On-vehicle Service 9. Reconnect the hose which was disconnected in step 1 above, and firmly replace the oil level gauge. 10. Start the engine and run it at idle for 1 - 2 minutes. 11. Move the selector lever through all positions, and then move it to the N position. 12. Check that the fluid level is at the COLD mark on the oil level gauge. If the level is lower than this, pour in more fluid. 13. Drive the vehicle until the fluid temperature rises to the normal temperature (70 - 80_C), and then check the fluid level again. The fluid level must be at the HOT mark. NOTE The COLD level is for reference only; the HOT level should be regarded as the standard level. Apply ATF to O-ring 14. Firmly insert the oil level gauge into the oil filler tube. 23101050067 OIL FILTER REPLACEMENT 1. Use the special tool (MB991610) to remove the automatic transmission oil filter. 2. Clean the filter bracket side mounting surface. 3. Apply a small amount of automatic transmission fluid to the O-ring of the new oil filter. 4. Use the special tool (MB991610) to install the automatic transmission oil filter. NOTE Tightening torque: 12 Nm 5. Check the quantity of the automatic transmission fluid. (Refer to P.23-46.) THROTTLE POSITION SENSOR ADJUSTMENT Refer to GROUP 13A - On-vehicle Service. 23100190142 ACCELERATOR PEDAL POSITION SENSOR ADJUSTMENT Refer to GROUP 13A - On-vehicle Service. 23100250048 23-49 AUTOMATIC TRANSMISSION - On-vehicle Service INHIBITOR SWITCH CONTINUITY CHECK Items 23100140345 Terminal No. 1 2 3 4 5 6 7 8 9 10 P R N D Inhibitor switch 3 2 L P R N D 3 2 L Transmission control cable Manual control lever Adjusting nut INHIBITOR SWITCH AND CONTROL CABLE 23100150096 ADJUSTMENT 1. Set the selector lever to the “N” position. 2. Loosen the control cable to manual control lever coupling nut to free the cable and lever. 3. Set the manual control lever to the neutral position. 23-50 AUTOMATIC TRANSMISSION - On-vehicle Service 10 - 12 Nm Mounting bolts A 4. Loosen the inhibitor switch body mounting bolts and the turn the inhibitor switch body so the hole in the end of the manual control lever and the hole (cross section A-A in the figure on the left) in the flange of the inhibitor switch body flange are aligned. 5. Tighten the inhibitor switch body mounting bolts to the specified torque. Be careful at this time that the position of the switch body is not changed. A Manual control lever Section A-A Hole in end Hole in flange Manual control lever Inhibitor switch body 12 Nm Adjusting nut Manual control lever 6. Gently pull the transmission control cable in the direction of the arrow, and then tighten the adjusting nut. 7. Check that the selector lever is in the “N” position. 8. Check that each range on the transmission side operates and functions correctly for each position of the selector lever. 23-51 AUTOMATIC TRANSMISSION - On-vehicle Service A/T CONTROL COMPONENT LOCATION 23100860234 Name Symbol Name Symbol Accelerator position sensor (with idle position switch) C Mode control switch L A/T control relay M Oil temperature sensor G A/T-ECU K Output shaft speed sensor E Crank angle sensor B Shift indicator lamp I Diagnosis connector O Solenoid valve G Dual pressure switch A Stop lamp switch P Engine ECU K TCL-ECU J Inhibitor switch F Throttle position sensor (with idle position switch) C Input shaft speed sensor H Vehicle speed sensor D Wide open throttle switch N C D B E A F G H I P O K N M L J 23-52 AUTOMATIC TRANSMISSION - On-vehicle Service A/T CONTROL COMPONENT CHECK 23100900011 CRANK ANGLE SENSOR CHECK Refer to GROUP 13A - Troubleshooting. THROTTLE POSITION SENSOR CHECK Refer to GROUP 13A - On-vehicle Service. 23100390030 ACCELERATOR PEDAL POSITION SENSOR CHECK 23100420029 Refer to GROUP 13H - On-vehicle Service. OIL TEMPERATURE SENSOR CHECK 1. Remove the oil temperature sensor. 23100450035 Oil temperature sensor 2. Measure the resistance between terminals No. 1 and No. 2 of the oil temperature sensor connector. Standard value: ATF Oil temperature (_C) Resistance (kW) 0 16.7- 20.5 100 0.57- 0.69 INHIBITOR SWITCH CHECK Refer to P.23A-49. 23100140352 STOP LAMP SWITCH CHECK Refer to GROUP 35 - Brake Pedal. 23100910014 VEHICLE SPEED SENSOR CHECK Refer to GROUP 54 - On-vehicle Service. 23100460038 AUTOMATIC TRANSMISSION - On-vehicle Service 23-53 DUAL POSITION PRESSURE SWITCH CHECK 23100470031 Refer to GROUP 55 - On-vehicle Service. IDLE POSITION SWITCH CHECK Refer to GROUP 13A - On-vehicle Service. 23100410033 MODE CONTROL SWITCH CHECK Refer to P.23-65. 23100920048 WIDE OPEN THROTTLE SWITCH CHECK Refer to P.23-64. 23100890080 A/T CONTROL RELAY CHECK 1. Remove the A/T control relay. 23100930065 2. Use jumper wires to connect A/T control relay terminal 2 to the battery ( - ) terminal and terminal 4 to the battery (+) terminal. 3. Check the continuity between terminal 1 and terminal 3 of the A/T control relay when the jumper wires are connected to and disconnected from the battery. Jumper wire Continuity between terminals No. 1 and No. 3 Connected Continuity Disconnected No continuity 4. If there is a problem, replace the A/T control relay. 23-54 Overdrive solenoid valve AUTOMATIC TRANSMISSION - On-vehicle Service Underdrive solenoid valve 23100940013 SOLENOID VALVE CHECK 1. Remove the valve body cover. 2. Disconnect the connectors of each solenoid valve. Second solenoid valve Low and reverse solenoid valve Damper clutch solenoid valve 3. Measure the resistance between terminals 1 and 2 of each solenoid valve. Standard value: Name Resistance Damper clutch solenoid valve 2.7 - 3.4 W (at 20_C) Low and reverse solenoid valve Second solenoid valve Underdrive solenoid valve Overdrive solenoid valve 4. If the resistance is outside the standard value, replace the solenoid valve. TORQUE CONVERTER STALL TEST Reverse clutch Torque converter Low-reverse Underdrive brake clutch 23100540206 This test measures the maximum engine speed when the selector lever is at the D or R position and the torque converter stalls to test the operation of the torque converter, starter motor and one-way clutch operation and the holding performance of the clutches and brakes in the transmission. Caution Do not let anybody stand in front of or behind the vehicle while this test is being carried out. 1. Check the automatic transmission fluid level and temperature and the engine coolant temperature. D Fluid level: At the HOT mark on the oil level gauge D Fluid temperature: 80 - 100_C D Engine coolant temperature: 80 - 100_C AUTOMATIC TRANSMISSION - On-vehicle Service 23-55 2. Check both rear wheels (left and right). 3. Pull the parking brake lever on, with the brake pedal fully depressed. 4. Start the engine. 5. Move the selector lever to the D position, fully depress the accelerator pedal and take a reading of the maximum engine speed at this time. Caution 1. The throttle should not be left fully open for any more than eight seconds. 2. If carrying out the stall test two or more times, move the selector lever to the N position and run the engine at 1,000 r/min to let the automatic transmission fluid cool down before carrying out subsequent tests. Standard value Stall speed: 2,100 - 2,600 r/min 6. Move the selector lever to the R position and carry out the same test again. Standard value Stall speed: 2,100 - 2,600 r/min TORQUE CONVERTER STALL TEST JUDGEMENT RESULTS a. Stall speed is too high in both D and R ranges D Low line pressure D Low & reverse brake slippage b. Stall speed is too high in D range only D Underdrive clutch slippage c. Stall speed is too high in R range only D Reverse clutch slippage d. Stall speed too low in both D and R ranges D Malfunction of torque converter D Insufficient engine output 23-56 AUTOMATIC TRANSMISSION - On-vehicle Service HYDRAULIC PRESSURE TEST 23100550216 1. Warm up the engine until the automatic transmission fluid temperature is 80 - 100_C. 2. Jack up the vehicle so that the wheels are free to turn. 3. Connect the special tools (2,942 kPa oil pressure gauge [MD998330] and joints [MD998332, MD998900]) to each pressure discharge port. 4. Measure the hydraulic pressure at each port under the conditions given in the standard hydraulic pressure table, and check that the measured values are within the standard value ranges. 5. If a value is outside the standard range, correct the problem while referring to the hydraulic pressure test diagnosis table. AUTOMATIC TRANSMISSION - On-vehicle Service 23-57 STANDARD HYDRAULIC PRESSURE TEST <4G63> Measurement condition Standard hydraulic pressure kPa Selector lever position Shift position Engine speed (r/min) Underdrive clutch pressure Reverse clutch pressure Overdrive clutch pressure Low and reverse brake pressure Second brake pressure Torque converter pressure P - 2,500 - - - 310 - 390 - 310 - 390 R Reverse 2,500 - 1,320 1,720 - 1,320 1,720 - 500 - 700 N - 2,500 - - - 310 - 390 - 310 - 390 D 1st gear 2,500 1,010 1,050 - - 1,010 1,050 - 500 - 700 2nd gear 2,500 1,010 1,050 - - - 1,010 1,050 500 - 700 3rd gear 2,500 590 - 690 - 590 - 690 - - 450 - 650 4th gear 2,500 - - 590 - 690 - 590 - 690 450 - 650 <6A13> Measurement condition Standard hydraulic pressure kPa Selector lever position Shift position Engine speed (r/min) Underdrive clutch pressure Reverse clutch pressure Overdrive clutch pressure Low and reverse brake pressure Second brake pressure Torque converter pressure P - 2,500 - - - 260 - 340 - 260 - 340 R Reverse 2,500 - 1,320 1,720 - 1,320 1,720 - 500 - 700 N - 2,500 - - - 260 - 340 - 260 - 340 D 1st gear 2,500 1,010 1,050 - - 1,010 1,050 - 500 - 700 2nd gear 2,500 1,010 1,050 - - - 1,010 1,050 500 - 700 3rd gear 2,500 780 - 880 - 780 - 880 - - 450 - 650 4th gear 2,500 - - 780 - 880 - 780 - 880 450 - 650 23-58 AUTOMATIC TRANSMISSION - On-vehicle Service HYDRAULIC PRESSURE TEST DIAGNOSIS TABLE Trouble symptom Probable cause All hydraulic pressures are high. Incorrect transmission control cable adjustment Malfunction of the regulator valve All hydraulic pressures are low. Incorrect transmission control cable adjustment Malfunction of the oil pump Clogged internal oil filter Clogged external oil filter Clogged oil cooler Malfunction of the regulator valve Malfunction of the relief valve Incorrect valve body installation Hydraulic pressure is abnormal in “R” range only. Malfunction of the regulator valve Clogged orifice Incorrect valve body installation Hydraulic pressure is abnormal in “3” or “4” range only. Malfunction of the overdrive solenoid valve Malfunction of the overdrive pressure control valve Malfunction of the regulator valve Malfunction of the switch valve Clogged orifice Incorrect valve body installation Only underdrive hydraulic pressure is abnormal. Malfunction of the oil seal K Malfunction of the oil seal L Malfunction of the oil seal M Malfunction of the underdrive solenoid valve Malfunction of the underdrive pressure control valve Malfunction of check ball Clogged orifice Incorrect valve body installation Only reverse clutch hydraulic pressure is abnormal. Malfunction of the oil seal A Malfunction of the oil seal B Malfunction of the oil seal C Clogged orifice Incorrect valve body installation AUTOMATIC TRANSMISSION - On-vehicle Service Trouble symptom Probable cause Only overdrive hydraulic pressure is abnormal. Malfunction of the oil seal D Malfunction of the oil seal E Malfunction of the oil seal F Malfunction of the overdrive solenoid valve Malfunction of the overdrive pressure control valve Malfunction check ball Clogged orifice Incorrect valve body installation Only low and reverse hydraulic pressure is abnormal. Malfunction of the oil seal I Malfunction of the oil seal J Malfunction of the low and reverse solenoid valve Malfunction of the low and reverse pressure control valve Malfunction of the switch valve Malfunction of the fail safe valve A Malfunction of check ball Clogged orifice Incorrect valve body installation Only second hydraulic pressure is abnormal. Malfunction of the oil seal G Malfunction of the oil seal H Malfunction of the oil seal O Malfunction of the second solenoid valve Malfunction of the second pressure control valve Malfunction of the fail safe valve B Clogged orifice Incorrect valve body installation Only torque converter pressure is abnormal. Malfunction of the oil cooler Malfunction of the oil seal N Malfunction of the damper clutch control solenoid valve Malfunction of the damper clutch control valve Malfunction of the torque converter pressure control valve Clogged orifice Incorrect valve body installation Pressure applied to non operating element. Incorrect transmission control cable adjustment Malfunction of the manual valve Malfunction of check ball Incorrect valve body installation 23-59 23-60 AUTOMATIC TRANSMISSION - On-vehicle Service OIL SEAL LAYOUT E F G H J I D C B A O K L M N 23-61 AUTOMATIC TRANSMISSION - On-vehicle Service HYDRAULIC CIRCUIT 23100880070 PARKING AND NEUTRAL 1 2 3 6 4 6 6 5 6 7 8 9 10 11 12 13 14 15 19 17 21 16 20 24 18 22 23 25 26 R ND P3 2 L 27 29 28 30 31 32 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Reverse clutch Low-reverse brake Second brake Underdrive clutch Overdrive clutch Accumulator Check ball Damper clutch Fail safe valve A Fail safe valve B Damper clutch control valve Switch valve Automatic transmission fluid cooler Lubrication Low-reverse pressure control valve Second pressure control valve Underdrive pressure control valve 18. Overdrive pressure control valve 19. Damper clutch control solenoid valve 20. Low-reverse solenoid valve 21. Second solenoid valve 22. Underdrive solenoid valve 23. Overdrive solenoid valve 24. Torque converter pressure control valve 25. Regulator valve 26. Manual valve 27. Oil filter 28. Oil pump 29. Oil strainer 30. Oil filter (Built in type) 31. Relief valve 32. Oil pan 23-62 AUTOMATIC TRANSMISSION - On-vehicle Service LINE PRESSURE ADJUSTMENT Adjusting screw 23100170122 1. Discharge the automatic transmission fluid, and then remove the valve body cover. 2. Turn the adjusting screw shown in the illustration at left to adjust the underdrive pressure to the standard value. The pressure increases when the screw is turned to the left. NOTE When adjusting the underdrive pressure, adjust to the middle of the standard value range. Standard value: 1,010 - 1,050 kPa Change in pressure for each turn of the adjusting screw: 35 kPa 3. Install the valve body cover, and pour in the standard volume of automatic transmission fluid. 4. Carry out a hydraulic pressure test. (Refer to P.23-56.) Readjust the line pressure if necessary. SELECTOR LEVER OPERATION CHECK 23100130090 Push button Button not pressed Button pressed 1. Shift selector lever to each range and check that lever moves smoothly and is controlled. Check that position indicator is correct. 2. Check the selector lever can be moved to each position (by button operation as shown in the illustration). 3. Start the engine and check if the vehicle moves forward when the selector lever is moved from N or D, and moves backward when moved to R. 4. When the shift lever malfunctions, adjust control cable and selector lever sleeve. Check for worm shift lever assembly sliding parts. 23-63 AUTOMATIC TRANSMISSION - Transmission Control TRANSMISSION CONTROL 23100660247 REMOVAL AND INSTALLATION Pre-removal and Post-installation Operation D Air Cleaner Assembly Removal and Installation D Battery and Battery Tray Removal and Installation D Lower Cover and Side Cover Removal and Installation (Refer to GROUP 52A - Instrument Panel.) D Floor Console Box Removal and Installation (Refer to GROUP 52A.) Caution: SRS Be careful not to subject the SRS-ECU to any shocks during removal and installation of the transmission control cable and selector lever assembly. 2 9 1 12 Nm 3 4 6 8 12 Nm 7 5 12 Nm 7 Transmission control cable removal steps 1. Foot rest 2. Engine-ECU, A/T-ECU and A/T control relay assembly "AA 3. Nut 4. Adjuster 5. Transmission control cable connection 6. Transmission control cable assembly Selector lever assembly removal steps 5. Transmission control cable connection 7. Wiring harness connector 8. Selector lever assembly A/T-ECU removal steps 1. Foot rest 2. Engine-ECU, A/T-ECU and A/T control relay assembly Wide open throttle switch removal step 9. Wide open throttle switch 23-64 AUTOMATIC TRANSMISSION - Transmission Control INSTALLATION SERVICE POINT Nut Manual control lever "AA NUT INSTALLATION 1. Put the selector lever in the “N” position. 2. Loosen the adjusting nut, gently pull the transmission control cable in the direction of the arrow and tighten the nut. INSPECTION 23100890097 WIDE OPEN THROTTLE SWITCH CHECK OFF ON Switch position Terminal No. 1 OFF ON 2 23-65 AUTOMATIC TRANSMISSION - Transmission Control SELECTOR LEVER ASSEMBLY 23100680168 DISASSEMBLY AND REASSEMBLY 1 2 3 4 6 2 Nm 5 8 10 2 Nm 7 12 14 11 11 15 13 Nm 13 9 Disassembly steps 1. Push button 2. Spring 3. Bumper 4. Adjuster 5. Shift knob 6. Indicator panel assembly 7. Switch holder 8. A/T mode changeover switch 9. 10. 11. 12. 13. 14. 15. Bolt Shift lever assembly Bushing Detent spring Pipe Position indicator lamp assembly Bracket assembly INSPECTION 23100670059 A/T MODE CHANGEOVER SWITCH CHECK Switch position Terminal No. 1 OFF ON 2 4 3 5 23-66 AUTOMATIC TRANSMISSION - Transmission Assembly TRANSMISSION ASSEMBLY 23100570274 REMOVAL AND INSTALLATION Pre-removal Operation D Carry out the essential service for the troubleshooting (Refer to P.23-46.) D Transmission Fluid Draining (Refer to P.23-47.) D Under Cover Removal D Battery and Battery Tray Removal D Air Cleaner Assembly Removal 12 Nm 3 Post-installation Operation D Air Cleaner Assembly Installation D Battery and Battery Tray Installation D Under Cover Installation D Transmission Fluid Supplying (Refer to P.23-47.) D Check the Dust Cover for Cracks or Damage by Pushing it with Finger. D Selector Lever Operation Check D Speedometer Operation Check D Wheel Alignment Adjustment (Refer to GROUP 33A - On-vehicle Service.) 4 6 2 8 103 Nm 11 44 Nm 7 5 17 88 Nm*1 12 98 - 118 Nm*1 1 10 17 10 - 12 Nm 81 Nm 14 13 30 Nm 30 Nm 24 - 33 Nm 9 67 - 78 Nm 81 Nm 16 98 - 118 Nm Removal steps 1. Transmission control cable connection 2. Transmission fluid cooler hoses connection 3. Bolt 4. Input shaft speed sensor connector 5. Output shaft speed sensor connector 6. Inhibitor switch connector 7. A/T control solenoid valve assembly connector 8. Vehicle speed sensor connector 9. Starter motor <6A1> 15 88 Nm AA" AB" 10. 11. 12. 13. 14. 15. 16. 17. Tie rod end connection Stabilizer link connection Damper fork No. 2 stay Lateral lower arm connection No. 3 stay Compression lower arm connection Drive shaft AC" Caution *1: Indicates parts which should be temporarily tightened, and then fully tightened with the vehicle on the ground in the unladen condition. 23-67 AUTOMATIC TRANSMISSION - Transmission Assembly 57 Nm 20 18 49 Nm 10 - 12 Nm 30 Nm 81 Nm*2 26 21 19 21 45 - 52 Nm 27 26 24 49 Nm 25 Nm 49 Nm 57 Nm*2 25 44 Nm 7 Nm 10 Nm 9 Nm 23 22 69 Nm 93 Nm 69 - 78 Nm 18. Starter motor <4G6> 19. Transmission assembly upper part coupling bolts AD" 20. Transmission mount bracket "BA 21. Transmission mount stopper AE" D Engine and transmission assembly supporting 22. Centermember assembly 23. Rear roll stopper 24. Bell housing cover <4G6> 25. Cover <6A1> 26. Transmission assembly lower part coupling bolts AF" "AA 27. Transmission assembly AF" Caution Mounting locations marked by *2 should be provisionally tightened, and then fully tightened after placing the vehicle horizontally and loading the full weight of the engine on the vehicle body. 23-68 AUTOMATIC TRANSMISSION - Transmission Assembly REMOVAL SERVICE POINTS Cord AA" TIE ROD END DISCONNECTION Ball joint MB990635 or MB991113 Caution 1. Use the special tool to loosen the tie rod end mounting nut. Only loosen the nut; do not remove it from the ball joint. 2. Support the special tool with a cord, etc. not to let it come off. Nut AB" NO.3 STAY REMOVAL No.3 stay is tightened together with the crossmember. Therefore, after removing No.3 stay, install the nut and bolt to the crossmember provisionally. No.3 stay Crossmember Transmission side Pry bar AC" DRIVE SHAFT DISCONNECTION 1. Insert a pry bar between the transmission case and the drive shaft as shown to remove the drive shaft. NOTE Do not remove the hub and knuckle from the drive shaft. Caution Always use a pry bar, or the TJ will be damaged. 2. Suspend the removed drive shaft with a wire so that there are no sharp bends in any of the joints. 3. Use a shop towel to cover the transmission case not to let foreign material get into it. AD" TRANSMISSION MOUNT BRACKET REMOVAL Jack up the transmission assembly gently with a garage jack, and then remove the transmission mount bracket. AUTOMATIC TRANSMISSION - Transmission Assembly MZ203827 23-69 AE" ENGINE AND TRANSMISSION ASSEMBLY SUPPORTING Set the special tool to the vehicle to support the engine and transmission assembly. MB991453 Drive plate bolts AF" TRANSMISSION ASSEMBLY LOWER PART COUPLING BOLTS/TRANSMISSION ASSEMBLY REMOVAL 1. Support the transmission assembly by using a transmission jack. 2. Remove the drive plate bolts while turning the crank shaft. 3. Press in the torque converter to the transmission side so that the torque converter does not remain on the engine side. 4. Remove the transmission assembly lower bolts and lower the transmission assembly. INSTALLATION SERVICE POINTS "AA TRANSMISSION ASSEMBLY INSTALLATION After securely inserting the torque converter into the transmission side so that the value shown in the illustration becomes the reference value, install the transmission assembly to the engine. A Reference value (A): Approx. 12.2 mm "BA TRANSMISSION MOUNT STOPPER INSTALLATION Install the transmission mount stopper so that the arrow points as shown in the illustration. Engine side Arrow Transmission mount bracket Transmission mount stopper NOTES
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.2 Linearized : Yes Encryption : Standard V1.2 (40-bit) User Access : Print, Fill forms, Extract, Assemble, Print high-res Create Date : 1998:03:02 11:35:56 Producer : Acrobat Distiller 3.0J (Windows 版) Author : Made by MMC Creator : ADOBEPS4.DRV Version 4.11 Title : Workshop Manual GALANT Modify Date : 2000:07:19 19:24:58 Subject : 23, Automatic Transmission, English Page Count : 70 Page Mode : UseOutlinesEXIF Metadata provided by EXIF.tools