Mitsubishi Outlander GS45X. Manual - part 1709

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

23C-141

INSPECTION PROCEDURE 5: Gears cannot be shifted at all, or a certain gear shift (1st to 2nd, 2nd to 
3rd, etc.) is not made.

.

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

• Non-genuine device installation: TCM voltage 

drop

• Improper fixing of the electric wiring, poor inser-

tion of the connector, poor contact of the inside 
PIN

• Poor adjustment of transmission range switch

• Failure of the transmission range switch main unit

• Malfunction of the TCM

• TCM power supply or ground failure

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

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

DIAGNOSIS

STEP 1. Check the electrical equipment.
Q: Is the non-genuine electrical equipment (car navigator, 

audio devices, etc.) installed?
YES : Remove the power supply wiring and signal lines of 

the equipment.

NO :  Go to Step 2

STEP 2. Check the electric system.
Check if there is an improper fixing of the electric wiring, poor 
insertion of the connector, and poor contact.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Adjust and repair.

STEP 3. Check and adjust the transmission range switch.
Refer to 

P.23C-269

, 

P.23C-269

.

If the transmission range switch has a failure, replace it, and 
then check the trouble symptom again.
Q: Is the check result normal?

YES : The procedure is complete.
NO :  Go to Step 4.

STEP 4. Check the TCM power supply and ground.
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Repair the wiring.

STEP 5. Replace the TCM.
Q: Is the failure resolved?

YES : The procedure is complete.
NO :  Go to Step 6.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

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STEP 6. 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 6: The torque converter is not locked up.

.

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

• Poor adjustment of transmission range switch

• Failure of the transmission range switch main unit

• Malfunction of the TCM

• Poor installation of A/T and engine

• Malfunction of the torque converter

DIAGNOSIS

STEP 1. Check and adjust the transmission range switch.
Refer to 

P.23C-269

, 

P.23C-269

.

If the transmission range switch has a failure, replace it, and 
then check the trouble symptom again.
Q: Is the check result normal?

YES : The procedure is complete.
NO :  Go to Step 2.

STEP 2. Replace the TCM.
Q: Is the failure resolved?

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

STEP 3. Check the installation position of the transaxle 
assembly and the engine.
Is the installation of transaxle assembly and the engine nor-
mal? Compare and check the axial direction position with the 
same model vehicle.
Q: Is the check result normal?

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

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

YES : Replace the torque converter.
NO :  Replace the transaxle assembly..

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

23C-143

INSPECTION PROCEDURE 7: The clutch slips when the vehicle starts or during gear shift.

.

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

• Poor adjustment of transaxle control cable

• Inadequate transmission fluid level

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

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

DIAGNOSIS

STEP 1. Check the transaxle control cable. <When the 
clutch slips at vehicle start>
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. Refer to 

P.23C-269

.

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

YES : Go to Step 3.
NO :  Go to Step 5.

STEP 3. Check the transmission fluid level.
Check if the transmission fluid level is adequate.
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Check and repair the leakage point of the 

transmission fluid, add the transmission fluid, and 
then go to Step 4.

STEP 4. Perform a hydraulic test.
Refer to 

P.23C-26

.

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.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

23C-144

INSPECTION PROCEDURE 8: The engine brake is not applied.

.

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

• Poor adjustment of transaxle control cable

• Inadequate transmission fluid level

• Malfunction of the TCM

• 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. Refer to 

P.23C-269

.

STEP 2. Check the transmission fluid.
Check the transmission fluid for burning, fouling, and foreign 
material.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Go to Step 7.

STEP 3. Check the transmission fluid level.
Check if the transmission fluid level is adequate.
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Check and repair the leakage point of the 

transmission fluid, add the transmission fluid, and 
then go to Step 4.

STEP 4. Perform a hydraulic test.
Refer to 

P.23C-26

.

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Go to Step 7.

STEP 5. Replace the TCM.
Q: Is the failure resolved?

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

STEP 6. Compare with another same model vehicle.
Q: Is there a difference from the same model vehicle?

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