DTC Troubleshooting

DTC Troubleshooting: P0796 (78-3)

DTC P0796:

A/T Clutch Pressure Control Solenoid Valve C 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.
- If DTC P0796 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 5th gear because of the fail-safe function, but if that DTC is a Pending DTC, the transmission does not shift to any gear other than 3rd or 6th gear because of the fail-safe function.

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.

NO -

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

4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

5. Clear the DTC with the HDS.

6. 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 -

Faulty A/T clutch pressure control solenoid valve C, shift valve C, D inhibitor valve, reverse inhibitor valve, or shift fork shaft. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) Secondary Valve Body Replacement (A/T), the main valve body (shift valve C, D inhibitor valve, or reverse inhibitor valve), the regulator valve body (shift fork shaft), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.