DTC P0741: Damper Clutch System (Stuck off), DTC P0742 Damper Clutch System (Stuck on): Diagnosis
- STEP 1. Hydraulic pressure test
Refer to HYDRAULIC PRESSURE TESTS .
Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Repair or replace the failure section.
- STEP 2. Check the lock-up and low-reverse brake linear solenoid.
Check for P2763 (lock-up and low-reverse brake linear solenoid open) and P2764 (lock-up and low-reverse brake linear solenoid short). Refer to DTC P2763: LOCK-UP AND LOW-REVERSE BRAKE LINEAR SOLENOID VALVE SYSTEM (OPEN CIRCUIT); DTC P2764: LOCK-UP AND LOW-REVERSE BRAKE LINEAR SOLENOID VALVE SYSTEM (SHORT CIRCUIT) .
Q: Is the check result normal?
- YES: Go to Step 3.
- NO: Repair or replace the failure section.
- STEP 3. Check the transmission fluid temperature sensor, input shaft speed sensor, and output shaft speed sensor.
Check the following DTCs: P0712 (Transmission fluid temperature sensor (short circuit)), P0713 (Transmission fluid temperature sensor (open circuit)), P0715 (Input shaft speed sensor) and P0720 (output shaft speed sensor).
Refer to DTC P0712: TRANSMISSION FLUID TEMPERATURE SENSOR SYSTEM (SHORT CIRCUIT) < P0712 >, DTC P0713: TRANSMISSION FLUID TEMPERATURE SENSOR SYSTEM (OPEN CIRCUIT) < P0713 >, DTC P0715: INPUT SHAFT SPEED SENSOR SYSTEM < P0715 >, DTC P0720: OUTPUT SHAFT SPEED SENSOR SYSTEM < P0720 >.
Q: Is the check result normal?
- YES: Go to Step 4.
- NO: Repair or replace the failure section.
- STEP 4. Check the malfunction of CAN communication system.
Q: Are the DTC for CAN communication system malfunction (U0001, U0100, U0141, P1705, P1706) stored?
- YES: Repair or replace the failure section.
- NO: Go to Step 5.
- STEP 5. Check the TCM connector pin terminal and the connection status.
Q: Is the check result normal?
- YES: Replace the TCM, and then go to Step 6.
- NO: Repair or replace the failure section.
- STEP 6. Erase the DTC, and drive the vehicle for a while.
Check that the normal code is displayed.
Q: Is the check result normal?
- YES: The procedure is complete.
- NO: Go to Step 7.
- STEP 7. Check the installation position of the engine and A/T.
Q: Is the check result normal?
- YES: Replace the transaxle assembly.
- NO: Repair or replace the failure section.