DTC Troubleshooting

DTC Troubleshooting: P0741 (40)

DTC P0741:

Torque Converter Clutch Hydraulic Circuit Stuck OFF

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information How to Troubleshoot the A/T System.

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 ATF Replacement 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 13.

NO -

Replace the ATF ATF Replacement, then go to step 4.

4. Turn the ignition switch to ON (II).

5. Clear the DTC with the HDS.

6. Select Shift Solenoid Valve E in the Miscellaneous Test Menu, and check that shift solenoid valve E operates with the HDS.

Is a clicking sound heard?

YES -

Go to step 7.

NO -

Replace shift solenoid valve E Shift Solenoid Valve Test, Replacement, and Shift Solenoid Wire Harness Replacement (A/T), then go to step 11.

7. Run the engine until the Engine Coolant Temperature reaches 176 °F (80 °C) with the HDS.

8. Select Clutch Pressure Control (Linear) Solenoid Valve 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 9.

NO -

Follow the instructions indicated on the HDS according to the test result. Go to step 11 if a part is replaced.

9. Test-drive the vehicle on a level road with a steady speed at 60 mph (96 km/h) for at least 20 seconds.

10. Monitor the OBD STATUS for P0741 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?

YES -

Repair the faulty torque converter clutch mechanism, the torque converter clutch hydraulic circuit, the lock-up shift valve, or the lock-up control valve, or replace the transmission, then go to step 13.

NO -

If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, go to step 9.

11. Turn the ignition switch to ON (II).

12. Clear the DTC with the HDS.

13. Test-drive the vehicle on a level road with a steady speed 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.

14. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0741 indicated?

YES -

Go to step 5.

NO -

Go to step 15.

15. Monitor the OBD STATUS for P0741 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 14, go to the indicated DTC's troubleshooting.

NO -

If the HDS indicates FAILED, go to step 5. If the HDS indicates NOT COMPLETED, go to step 13.