DTC Troubleshooting

DTC Troubleshooting: P0796 (78), P0797 (78)

DTC P0796:

A/T Clutch Pressure Control Solenoid Valve C Stuck OFF

DTC P0797:

A/T Clutch Pressure Control Solenoid Valve C Stuck ON

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review 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 11.

NO -

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

4. Clear the DTC with the HDS.

5. P0796: Start the engine in P. With the brake pedal pressed, shift to D, and wait for at least 3 seconds, then shift to R. Reverse the vehicle for at least 3 seconds. Slow down, and stop the wheels.

P0797: Test-drive the vehicle with the shift lever in D for at least 11 seconds, and let the transmission shift through all five gears. Slow down, and stop the wheels.

6. Monitor the OBD STATUS for P0796 or P0797 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?

YES -

Go to step 7.

NO -

If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, go to step 5.

7. Clear the DTC with the HDS.

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

Does the HDS indicate NORMAL?

YES -

Intermittent failure, the system is OK at this time.�

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 9. If any part is replaced, go to step 10.

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

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

YES -

Repair the hydraulic system related with shift valve C, or replace the transmission, then go to step 11.

NO -

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

10. Clear the DTC with the HDS.

11. P0796: Start the engine in P. With the brake pedal pressed, shift to D, and wait for at least 3 seconds. Shift to R, wait for at least 3 seconds, then let the transmission shift through all five gears. Slow down, and stop the wheels.

P0797: Test-drive the vehicle with the shift lever in D for at least 11 seconds, and let the transmission shift through all five gears. Slow down, and stop the wheels.

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

Is DTC P0796 or P0797 indicated?

YES -

Go to step 7.

NO -

Go to step 13.

13. Monitor the OBD STATUS for P0796 or P0797 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 12, go to the indicated DTC's troubleshooting.�

NO -

If the HDS indicates FAILED, go to step 7. If the HDS indicates NOT COMPLETED, go to step 11.