P0777

DTC 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.
NO - Replace the ATF, then go to step 4.

4. Turn the ignition switch ON (II).
5. Clear the DTC with the HDS.
6. Choose Clutch Pressure Control (Linear) Solenoid B in Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve B with the HDS.
Is the result 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 by the test result, if the tester has not determined the cause of the failure, go to step 7. If any part is replaced, go to step 8.

7. 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 with shift valve B, or replace the transmission, then go to step 8.
NO - Replace A/T clutch pressure control solenoid valve B, then go to step 8.

8. Turn the ignition switch ON (II).
9. Clear the DTC with the HDS.
10. Test-drive the vehicle in the D position through all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
11. Repeat the test-driving in step 10.
12. Check for DTCs with the HDS.
Is DTC P0777 indicated?
YES - Go to step 5.
NO - Go to step 13.

13. Monitor the OBD STATUS for P0777 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated in step 12, go to the indicated DTC's troubleshooting.
NO - If the screen indicates FAILED, go to step 5. If the screen indicates NOT COMPLETED, go to step 10.