Mitsubishi Outlander GS45X. Manual - part 1640

DIAGNOSIS

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CVT

23A-117

SYMPTOMS

TCM cannot be turned ON.

.

PROBABLE CAUSES

• Damaged wiring harness and connectors

• Malfunction of TCM

DIAGNOSTIC PROCEDURE

STEP 1. Check the following connector:

• A-18X CVT control relay connector

• C-38 TCM connector

Check each terminal for imperfect contact.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the defective connector.

STEP 2. Check for open circuit in the wiring harness 
between the relay box connector and the TCM connector.

• Between A-18X CVT control relay connector (terminal No.3) 

and C-38 TCM connector (terminal No.12)

• Between A-18X CVT control relay connector (terminal No.3) 

and C-38 TCM connector (terminal No.25)

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Repair the wiring harness.

STEP 3. Check for open circuit in the wiring harness 
between the TCM connector and the ground.

• Between C-38 TCM (terminal No.13) and ground

• Between C-38 TCM (terminal No.26) and ground

Q: Is the check result normal?

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

STEP 4. Retest the system.
Recheck the trouble symptom.
Q: Does the malfunction take place again?

YES : Replace TCM.
NO :  Intermittent malfunction

DIAGNOSIS

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CVT

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Inspection Procedure 2: Vehicle Creeps in the N Range.

.

SYMPTOMS

Engine torque is transferred to the driveshaft in the N 
range, and the vehicle consequently moves forward 
or rearward.

.

PROBABLE CAUSES

• Malfunction of the transmission range switch

• Malfunction of CVT assembly

• Damaged wiring harness and connectors

• Malfunction of TCM

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III data list
Item 49: Transmission range switch
Check that the service data changes when the selector lever is 
moved to all ranges.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Go to Step 3.

STEP 2. Check of the transmission range switch and shift 
control cable
Refer to 

P.23A-144

.

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Adjust the transmission range switch and the control 

cable.

STEP 3. Transmission range switch continuity check
Refer to 

P.23A-143

.

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Replace the transmission range switch.

STEP 4. Retest the system.

• Replace TCM.

• Recheck the trouble symptom.

Q: Does the malfunction take place again?

YES : Replace the CVT assembly.
NO :  The inspection is complete.

DIAGNOSIS

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CVT

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Inspection Procedure 3: Shock is experienced during N to D and/or N to R shifting operation.

.

SYMPTOMS

Deep shock is experienced when the selector lever is 
moved from the N to R range or from the N to D 
range.

.

PROBABLE CAUSES

• Abnormal line pressure

• Malfunction of TCM

• Malfunction of CVT assembly

DIAGNOSTIC PROCEDURE

STEP 1. Engine idling speed check
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Refer to the "Engine troubleshooting."

STEP 2. Line pressure check
Carry out "hydraulic test" (Refer to 

P.23A-27

).

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Repair according to the hydraulic pressure test 

diagnosis table.

STEP 3. Retest the system.

• Replace TCM.

• Recheck the trouble symptom.

Q: Does the malfunction take place again?

YES : Replace the CVT assembly.
NO :  The inspection is complete.

Inspection Procedure 4: Poor Acceleration or Incomplete Shifting Operation

.

SYMPTOMS

Vehicle does not creep. Incomplete shifting operation 
or extremely poor acceleration is observed.

.

PROBABLE CAUSES

• Malfunction of forward clutch

• Malfunction of torque converter

• Malfunction of CVT assembly

• Malfunction of valve body assembly

• Malfunction of TCM

DIAGNOSTIC PROCEDURE

STEP 1. Engine-related troubleshooting check
Check for engine malfunction.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Carry out the engine-related troubleshooting.

DIAGNOSIS

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STEP 2. Torque converter stall test implementation
Refer to 

P.23A-25

.

Q: Is the check result normal?

YES : Go to Step 3.
NO (stall speed is low.) : Replace the torque converter.
NO (stall speed is high.) : Go to Step 4.

STEP 3. Forward clutch pressure check
Carry out "hydraulic test"(Refer to 

P.23A-27

).

Q: Is the check result normal?

YES : Replace the forward clutch.
NO :  Replace the valve body assembly.

STEP 4. Retest the system.
Replace TCM, and then recheck symptoms.
Q: Does the malfunction take place again?

YES : Replace the CVT assembly.
NO :  The inspection is complete.

Inspection Procedure 5: Cannot be Changed in Sport Mode.

SHIFT
SWITCH

SPORT
MODE

AUTO
MODE

SELECT
SWITCH

SELECTOR
LEVER
ASSEMBLY

TRANSAXLE
CONTROL MODULE

Shift switch assembly system circuit

ACA03154