Mitsubishi Outlander GS45X. Manual - part 1708

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

TSB Revision

AUTOMATIC TRANSAXLE

23C-137

STEP 3. Check the ETACS-ECU, the TCM connector pin 
terminal, and the connection status.
Q: Is the check result normal?

YES : Repair or replace the failure section.
NO :  Replace the TCM.

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: The vehicle does not run at any range (including low power).

.

TROUBLESHOOTING HINTS (THE MOST 
LIKELY CAUSES FOR THIS CONDITION:)

• Malfunction of the engine

• Insufficient transmission fluid level

• Poor adjustment of transaxle control cable

• Malfunction of the torque converter

• Malfunction of the valve body assembly

• A/T failure: Hydraulic system (valve body assem-

bly, oil pump), driving force transmission system 
(parking mechanism, clutch/brake, gears)

DIAGNOSIS

STEP 1. Check the engine performance.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the failure, and perform adjustment.

STEP 2. Check the transaxle control cable.
Check the installation status of transaxle control cable and 
transmission range switch.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Adjust the installation status of transaxle control cable 

and transmission range switch. Refer to 

P.23C-269

.

STEP 3. Check the transmission fluid.
Check the transmission fluid for seizure, fouling, and foreign 
material.
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Go to Step 7.

STEP 4. Check the transmission fluid level.
Check if the transmission fluid level is adequate.
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Check and repair the leakage point of the 

transmission fluid, add the transmission fluid, and 
then go to Step 5.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

TSB Revision

AUTOMATIC TRANSAXLE

23C-138

STEP 5. Perform a hydraulic test.
Refer to 

P.23C-26

.

Q: Is the check result normal?

YES : Go to Step 6.
NO :  Go to Step 7.

STEP 6. Replace the torque converter.
Q: Is the failure resolved?

YES : The procedure is complete.
NO :  Go to Step 7.

STEP 7. Remove the transaxle assembly from the vehicle.
Disassemble and check the transaxle assembly to check if 
there is a foreign material inside.
Q: Is the check result satisfactory?

YES : Replace the transaxle assembly.
NO :  Replace the failure part.

INSPECTION PROCEDURE 2: The vehicle does not run at the "D" or the "R" range.

.

TROUBLESHOOTING HINTS (THE MOST 
LIKELY CAUSES FOR THIS CONDITION:)

• Poor adjustment of transaxle control cable

• A/T failure: Hydraulic system (valve body assem-

bly), driving force transmission system 
(clutch/brake)

DIAGNOSIS

STEP 1. Check the transaxle control cable.
Check the installation status of transaxle control cable and 
transmission range switch.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Adjust the installation status of transaxle control cable 

and transmission range switch. 

P.23C-269

.

STEP 2. Check the transmission fluid.
Check the transmission fluid for seizure, fouling, and level.
Q: Is the check result normal?

YES : The procedure is complete.
NO :  Go to Step 3.

STEP 3. Remove the transaxle assembly from the vehicle.
Disassemble and check the transaxle assembly to check if 
there is a foreign material inside.
Q: Is the check result satisfactory?

YES : Replace the transaxle assembly.
NO :  Replace the failure part.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

TSB Revision

AUTOMATIC TRANSAXLE

23C-139

INSPECTION PROCEDURE 3: The acceleration is poor.

.

TROUBLESHOOTING HINTS (THE MOST 
LIKELY CAUSES FOR THIS CONDITION:)

• Malfunction of the engine

• Malfunction of the TCM

• TCM power supply or ground failure

• Malfunction of the torque converter

• A/T failure: Hydraulic system (valve body assem-

bly), driving force transmission system 
(clutch/brake)

DIAGNOSIS

STEP 1. Check the engine performance.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the failure, and perform adjustment.

STEP 2. Compare with another same model vehicle.
Q: Is there a difference from the same model vehicle?

YES : Go to Step 3.
NO :  The procedure is complete.

STEP 3. Check the TCM power supply and ground.
Q: Is the check result satisfactory?

YES : Go to Step 4.
NO :  Repair the wiring.

STEP 4. Replace the TCM.
Q: Is the failure resolved?

YES : The procedure is complete.
NO :  Go to Step 5.

STEP 5. Check the transmission fluid.
Check the transmission fluid for seizure, fouling, and foreign 
material. Also, check that the fluid level is adequate.
Q: Is the check result normal?

YES : Go to Step 6.
NO :  Go to Step 7.

STEP 6. Replace the torque converter.
Q: Is the failure resolved?

YES : The procedure is complete.
NO :  Go to Step 7.

STEP 7. Remove the transaxle assembly from the vehicle.
Disassemble and check the transaxle assembly to check if 
there is a foreign material inside.
Q: Is the check result satisfactory?

YES : Replace the transaxle assembly.
NO :  Replace the failure part.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

TSB Revision

AUTOMATIC TRANSAXLE

23C-140

INSPECTION PROCEDURE 4: The vehicle moves at the "N" range.

.

TROUBLESHOOTING HINTS (THE MOST 
LIKELY CAUSES FOR THIS CONDITION:)

• Poor adjustment of transaxle control cable

• A/T failure: Hydraulic system (valve body assem-

bly), driving force transmission system 
(clutch/brake)

DIAGNOSIS

STEP 1. Check the engine performance.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the failure, and perform adjustment.

STEP 2. Compare with another same model vehicle.
Q: Is there a difference from the same model vehicle?

YES : Go to Step 3.
NO :  The procedure is complete.

STEP 3. Check the transaxle control cable.
Check the installation status of transaxle control cable and 
transmission range switch.
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Adjust the installation status of transaxle control cable 

and transmission range switch. Refer to 

P.23C-269

.

STEP 4. Check the transmission fluid.
Check the transmission fluid for seizure, fouling, and foreign 
material.
Q: Is the check result normal?

YES : The procedure is complete.
NO :  Go to Step 5.

STEP 5. Remove the transaxle assembly from the vehicle.
Disassemble and check the transaxle assembly to check if 
there is a foreign material inside.
Q: Is the check result satisfactory?

YES : Replace the transaxle assembly.
NO :  Replace the failure part.