Automatic Transmission
DTC P0776: A/T Clutch Pressure Control Solenoid Valve B Stuck OFFDTC P0777: A/T Clutch Pressure Control Solenoid Valve B Stuck ON
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
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 7.
NO - Replace the ATF, then go to step 4.
4. Clear the DTC with the HDS.
5. Select CLUTCH PRESSURE CONTROL (LINEAR) SOLENOID B in MISCELLANEOUS TEST MENU, and test A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B with the HDS.
Does the screen indicate NORMAL?
YES - Intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, retest A/T clutch pressure control solenoid valve B with the HDS.
NO - Follow the instructions indicated on the HDS for the test result, but if the HDS has not determined the cause of the failure, go to step 6. If any part is replaced, go to step 7.
6. Inspect A/T clutch pressure control solenoid valve B.
Does A/T clutch pressure control solenoid valve B work properly?
YES - Repair the hydraulic system related to shift valve B, or replace the transmission, then go to step 7.
NO - Replace A/T clutch pressure control solenoid valve B, then go to step 7.
7. Reconnect all connectors.
8. Turn the ignition switch to ON (II).
9. Clear the DTC with the HDS.
10. Test-drive the vehicle in D through all five gears.
11. Turn the ignition switch to LOCK (0), and repeat the test-drive in step 10.
12. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0776 or P0777 indicated?
YES - Go to step 4.
NO - If Temporary DTC or DTC P0776 or P0777 is not indicated, or if any other Temporary DTCs are indicated, go to step 13.
13. Monitor the OBD STATUS for P0776 or P0777 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other Temporary DTC or DTCs were indicated on step 12, go to the indicated DTCs troubleshooting.
NO - If the screen indicates FAILED, then go to step 4. If the screen indicates NOT COMPLETED, go to step 10.