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
23A-118
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
.
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
.
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
23A-119
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
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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CVT
23A-120
STEP 2. Torque converter stall test implementation
Refer to
.
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
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
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