Manufacturer Code Charts: 40

DTC Troubleshooting: P0741 (40)

DTC P0741:

Torque Converter Clutch Circuit Performance or Stuck OFF

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).

2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.

3. Drain the ATF through a strainer. Inspect the strainer for metal debris or excessive clutch material.

Does the strainer have metal debris or excessive clutch material?

YES -

Replace the transmission, then go to step 12.

NO -

Replace the ATF, then go to step 4.

4. Clear the DTC with the HDS.

5. Select Shift Solenoid D in the Miscellaneous Test Menu, and check that the shift solenoid valve D operates with the HDS.

Is a clicking sound heard?

YES -

Go to step 6.

NO -

Replace shift solenoid valve D Shift Solenoid Valve And Shift Solenoid Wire Harness Replacement, then go to step 11.

6. Run the engine until the engine coolant temperature reaches at least 176 °F (80 °C).

7. Select Clutch Pressure Control (Linear) Solenoid A in the Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve A with the HDS.

Does the HDS indicate NORMAL?

YES -

Go to step 8.

NO -

Follow the instructions indicated on the HDS by the test result, but if the HDS has not determined the cause of the failure, go to step 10. If any part is replaced, go to step 11.

8. Test-drive the vehicle on a level road with a steady throttle at 60 mph (96 km/h) for at least 20 seconds, or test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data. Slow down, and stop the wheels.

9. Monitor the OBD status for P0741 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate FAILED?

YES -

Repair the faulty torque converter clutch hydraulic circuit, lock-up shift valve, or lock-up control valve, or replace the torque converter assembly, then go to step 12.

NO -

Intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, return to step 8 and recheck.�

10. Inspect A/T clutch pressure control solenoid valve A A/T Clutch Pressure Control Solenoid Valve A Test.

Does A/T clutch pressure control solenoid valve A work properly?

YES -

Repair the hydraulic system related to the lock-up shift valve, lock-up control valve, and lock-up timing valve, or replace the transmission, then go to step 12.

NO -

Replace A/T clutch pressure control solenoid valve A A/T Clutch Pressure Control Solenoid Valve A Replacement, then go to step 11.

11. Clear the DTC with the HDS.

12. Test-drive the vehicle on a level road with a steady throttle at 60 mph (96 km/h) for at least 20 seconds, or test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data. Slow down, and stop the wheels.

13. Monitor the OBD status for P0741 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate PASSED?

YES -

Troubleshooting is complete.�

NO -

Return to step 5 and recheck. If the HDS indicates NOT COMPLETED, return to step 12 and recheck.