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SYMPTOMS Mitsubishi Lancer Evolution X

Continuously Variable Transaxle On-Vehicle Service - Except Lancer Evolution 4 illustrations ~1659 words

SYMPTOMS

TCM cannot be turned ON.

  1. Damaged wiring harness and connectors
  2. Malfunction of TCM
  1. STEP 1. Check the following connector: A-15X CVT control relay connector C-41 TCM connector Check each terminal for imperfect contact. Q: Is the check result normal? YES: Go to Step 2. NO: Repair the defective connector.
  2. STEP 2. Check for open circuit in the wiring harness between the relay box connector and the TCM connector. Between A-15X CVT control relay connector (terminal No. 3) and C-41 TCM connector (terminal No. 12) Between A-15X CVT control relay connector (terminal No. 3) and C-41 TCM connector (terminal No. 25) Q: Is the check result normal? YES: Go to Step 3. NO: Repair the wiring harness.
  3. STEP 3. Check for open circuit in the wiring harness between the TCM connector and the ground. Between C-41 TCM (terminal No. 13) and ground Between C-41 TCM (terminal No. 26) and ground Q: Is the check result normal? YES: Go to Step 4. NO: Repair the wiring harness.
  4. STEP 4. Retest the system. Recheck the trouble symptom. Q: Does the malfunction take place again? YES: Replace TCM. NO: Intermittent malfunction

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

  1. Malfunction of the transmission range switch
  2. Malfunction of CVT assembly
  3. Damaged wiring harness and connectors
  4. Malfunction of TCM
  1. 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 .
  2. STEP 2. Check of the transmission range switch and shift control cable Refer to «TRANSMISSION RANGE SWITCH AND CONTROL CABLE ADJUSTMENT»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution) . Q: Is the check result normal? YES: Go to Step 4 . NO: Adjust the transmission range switch and the control cable.
  3. STEP 3. Transmission range switch continuity check Refer to «TRANSMISSION RANGE SWITCH CONTINUITY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__transmission-range-switch-continuity-check) . Q: Is the check result normal? YES: Go to Step 4. NO: Replace the transmission range switch.
  4. 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.

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

  1. Abnormal line pressure
  2. Malfunction of TCM
  3. Malfunction of CVT assembly
  1. STEP 1. Engine idling speed check Q: Is the check result normal? YES: Go to Step 2. NO: Refer to the appropriate Engine troubleshooting service information.
  2. STEP 2. Line pressure check Carry out "hydraulic test" (Refer to «HYDRAULIC PRESSURE TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__hydraulic-pressure-test) ). Q: Is the check result normal? YES: Go to Step 3. NO: Repair according to the hydraulic pressure test diagnosis table.
  3. 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.

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

  1. Malfunction of forward clutch
  2. Malfunction of torque converter
  3. Malfunction of CVT assembly
  4. Malfunction of valve body assembly
  5. Malfunction of TCM
  1. 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.
  2. STEP 2. Torque converter stall test implementation Refer to «TORQUE CONVERTER STALL TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__torque-converter-stall-test) . 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 .
  3. STEP 3. Forward clutch pressure check Carry out "hydraulic test" (Refer to «HYDRAULIC PRESSURE TEST»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__hydraulic-pressure-test) ). Q: Is the check result normal? YES: Replace the forward clutch. NO: Replace the valve body assembly.
  4. 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.

Scheme 58

Scheme 58: Inspection Procedure 5: Cannot be Changed in Sport Mode. < Vehicles with sport mode >
Scheme 58: Inspection Procedure 5: Cannot be Changed in Sport Mode. < Vehicles with sport mode >

Gears cannot be changed even when the selector lever is moved to "+" or "-" position during sport mode.

  1. Damaged wiring harness and connectors
  2. Malfunction of TCM
  3. Malfunction of selector lever assembly (Faulty shift switch assembly)
  1. STEP 1. M.U.T.-III data list Item 52: Select switch (up) Item 53: Select switch (down) (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__data-list-reference-table) .) Q: Is the check result normal? YES: Intermittent malfunction NO: Go to Step 2.
  2. STEP 2. Shift switch assembly single unit check Refer to «SHIFT SWITCH ASSEMBLY CONTINUITY CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__shift-switch-assembly-continuity-check) . Q: Is the check result normal? YES: Go to Step 3. NO: Replace the selector lever assembly.
  3. STEP 3. Check the following connector: C-27 selector lever assembly connector C-40 TCM connector C-128 intermediate connector Check the terminals for a contact status problem and internal short circuit. Q: Is the check result normal? YES: Go to Step 4. NO: Repair the connector concerned.
  4. STEP 4. Check for open circuit and short to ground in the wiring harness between the selector lever assembly connector and the TCM connector. Between C-27 selector lever assembly connector (terminal No. 7) and body ground Between C-27 selector lever assembly connector (terminal No. 8) and C-40 TCM connector (terminal No. 35) Between C-27 selector lever assembly connector (terminal No. 9) and C-40 TCM connector (terminal No. 44) Between C-27 selector lever assembly connector (terminal No. 10) and C-40 TCM connector (terminal No. 43) Between C-27 selector lever assembly connector (terminal No. 8) and body ground Between C-27 selector lever assembly connector (terminal No. 9) and body ground Between C-27 selector lever assembly connector (terminal No. 10) and body ground Q: Is the check result normal? YES: Go to Step 5. NO: Repair the wiring harness.
  5. STEP 5. Retest the system. Q: Does the malfunction take place again? YES: Replace TCM. NO: Intermittent malfunction

Scheme 59

Scheme 59: Inspection Procedure 6: Cannot be Changed with the Paddle Shift. < Vehicles with sport mode >
Scheme 59: Inspection Procedure 6: Cannot be Changed with the Paddle Shift. < Vehicles with sport mode >

The transaxle does not upshift or downshift when the paddle shift is operated.

  1. Malfunction of paddle shift switch
  2. Damaged wiring harness and connectors
  3. Malfunction of TCM
  1. STEP 1. M.U.T.-III data list Item 54: Paddle switch (up) Item 55: Paddle switch (down) (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__data-list-reference-table) .) Q: Is the check result normal? YES: Intermittent malfunction NO: Go to Step 2.
  2. STEP 2. Check the following connector: C-41 TCM connector C-210 paddle shift switch connector C-127 intermediate connector Check the contact status of the terminals. Q: Is the check result normal? YES: Go to Step 3. NO: Repair the damaged connector.
  3. STEP 3. Paddle shift switch single unit check Refer to «PADDLE SHIFT SWITCH CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution) . Q: Is the check result normal? YES: Go to Step 4. NO: Replace the paddle shift assembly.
  4. STEP 4. Check for open circuit in the wiring harness between the TCM connector and the paddle shift switch connector Between C-41 TCM connector (terminal No. 22) and C-210 paddle shift switch connector (terminal No. 1) Between C-41 TCM connector (terminal No. 21) and C-210 paddle shift switch connector (terminal No. 3) Between C-210 paddle shift switch connector (terminal No. 2) and the body ground Q: Is the check result normal? YES: Go to Step 5. NO: Repair the wiring harness.
  5. STEP 5. Retest the system. Q: Is the check result normal? YES: Intermittent malfunction NO: Replace TCM.
  1. Thermal deterioration of the transmission fluid
  2. Damaged wiring harness and connectors
  3. Malfunction of the transmission fluid temperature sensor
  4. Clogged coolant system
  5. Clogged air-cooled transmission fluid cooler system
  6. Malfunction of the thermo valve
  7. Malfunction of TCM
  8. Malfunction of CVT assembly

Scheme 60

Scheme 60: DIAGNOSIS PROCEDURE
Scheme 60: DIAGNOSIS PROCEDURE

Scheme 61

Scheme 61
Scheme 61
  1. STEP 1. M.U.T.-III special function Check the deterioration level of the transmission fluid. NOTE: The transmission fluid deterioration level is the accumulation of the values counted depending on the fluid temperature of a certain period of time, and it shows the thermal deterioration level of the transmission fluid. Q: Is the deterioration level of the transmission fluid less than 210,000? YES: Go to Step 2. NO: Replace the transmission Fluid.
  2. STEP 2. M.U.T.-III data list Item 5: Transmission fluid temperature sensor (Refer to «DATA LIST REFERENCE TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution__data-list-reference-table) .) Q: Is the check result normal? YES: Go to Step 3. NO: Diagnosis code No. P0712, P0713: Diagnose the transmission fluid temperature sensor. Refer to «DTC P0712: MALFUNCTION OF TRANSMISSION FLUID TEMPERATURE SENSOR (SHORT); DTC P0713: MALFUNCTION OF TRANSMISSION FLUID TEMPERATURE SENSOR (OPEN)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution) .
  3. STEP 3. Air-cooled transmission fluid cooler system clogging check < 2.4 L engine > Check if the air-cooled transmission fluid cooler system is clogged according to the following procedure. CAUTION: Do not reuse the drained transmission fluid. Remove the transmission fluid cooler hose assembly. Blow air into the transmission fluid cooler hose assembly, and check that the air comes out from the opposite side. Blow air into the air-cooled transmission fluid cooler (A in the figure), and check that the air comes out from the opposite side (B in the figure). Install the parts, and replenish the transmission fluid to the specified quantity. Q: Is the check result normal? YES: Go to Step 4. NO: Replace the part(s) having damage or other problems.
  4. STEP 4. Thermo valve check Refer to «THERMO VALVE CHECK»(/mitsubishi/lancer-evolution/x-2007-2016/remont/automatic-trans/#continuously-variable-transaxle-on-vehicle-service-except-lancer-evolution) . Q: Is the check result normal? YES: Go to Step 5. NO: Replace the thermo valve.
  5. STEP 5. Coolant system clogging check Check if the coolant system is clogged according to the following procedure. CAUTION: Do not reuse the drained coolant. Drain the coolant. Remove water feed hose A, water feed hose B and water return hose A. Blow air into the removed parts, and check that the air comes out from the opposite side. Blow air into the coolant outlet (A in the figure), and check that the air comes out from the opposite side (B in the figure). Install the parts, and replenish the coolant to the specified quantity. Q: Is the check result normal? YES: Go to Step 6. NO: Replace the part(s) having damage or other problems.
  6. STEP 6. Retest the system. Q: Does a malfunction take place again? YES: Replace the CVT assembly. NO: Intermittent malfunction