P0777

DTC P0777: A/T Clutch Pressure Control Solenoid Valve B Stuck ON

NOTE: Record all freeze data and review General Troubleshooting Information before you troubleshoot.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Check to be sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF through a strainer. Inspect the ATF and strainer for metal debris or burnt fluid.
Has the ATF deteriorated?
YES - Replace ATF, and go to step 4.
NO - Go to step 8.
4. Clear the DTC with the HDS.
5. Test-drive the vehicle in the [D] position in all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
6. Retest-drive the vehicle in the [D] position in all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
7. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0777.
Did the result indicate a fail?
YES - Go to step 8.
NO - Intermittent failure, the system is OK at this time. If the tester indicates NOT COMPLETE, return to step 5 and recheck.
8. Clear the DTC with the HDS.
9. Select LINEAR SOL TEST in MISC. TEST MENU, then carry out LINEAR SOL B TEST in LINEAR SOL TEST MENU with the HDS.
Is the system OK?
YES - Intermittent failure, the system is OK at this time. If the tester indicates NOT COMPLETE, return to step 9 and recheck.
NO - Follow instructions indicated on the HDS by the test result, but the tester has not determined the cause of the failure, go to step 10. If any part was replaced, go to step 11.
10. Inspect A/T clutch pressure control solenoid valve B.
Does the A/T clutch pressure control solenoid valve B work properly?
YES - Repair hydraulic system related with ship valve B, or replace the transmission, then go to step 11.
NO - Replace A/T clutch pressure control solenoid valve B, then go to step 11.
11. Clear the DTC with the HDS.
12. Test-drive the vehicle in the [D] position in all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
13. Retest-drive the vehicle in the [D] position in all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
14. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0777.
Did the result indicate a pass?
YES - The problem has been corrected.
NO - Return to step 1 and recheck.