DTC Troubleshooting

DTC P0777: CVT Driven Pulley Pressure Control Valve Stuck ON

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

1. Turn the ignition switch to ON (II).
2. Check for Temporary DTCs or DTCs with the HDS.

Are any other Temporary DTCs or DTCs indicated simultaneously with DTC P0777?

YES - Go to the indicated DTC's troubleshooting, and recheck.

NO - Go to step 3.

3. Clear the DTC with the HDS.
4. Warm up the engine until the engine coolant temperature reaches 176° F (80° C).
5. Check the IMA battery level gauge in the gauge control module (tach).

Does the IMA battery level gauge indicate more than 4 segments?

YES - Go to step 6.

NO - Run the engine with the shift lever in P, at 3,500 rpm until the IMA battery level gauge indicates at least 4 segments, then go to step 6.

6. Shift the shift lever to D.
7. Keep pressing the brake pedal for 5 seconds.
8. Accelerate from a stop at full throttle, and test-drive the vehicle on a flat road for about 15 seconds. Do not release the accelerator during the test-drive.
9. Slow down to a stop. After stopping keep pressing the brake pedal for 5 seconds.
10. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0746, P0777, or P1899 indicated?

YES - The CVT driven pulley pressure control valve may be stuck ON or the CVT drive pulley pressure control valve may be stuck OFF:
^ DTC P0746 is indicated, replace the CVT drive pulley pressure control valve.
^ DTC P0777 is indicated, replace the CVT driven pulley pressure control valve.
^ DTC P1899 is indicated, replace the CVT drive pulley pressure control valve and CVT driven pulley pressure control valve as a set.
If any part was replaced, go to step 12.

NO - Go to step 6, and repeat the test-drive. If the HDS does not indicate a DTC after the test-drive has been done four times, the problem was an intermittent failure; the system is OK at this time.

11. Turn the ignition switch to ON (II).
12. Clear the DTC with the HDS.
13. Start the engine.
14. Shift the shift lever to D.
15. Keep pressing the brake pedal for 5 seconds.
16. Accelerate from a stop at full throttle, and test-drive the vehicle on a flat road for about 15 seconds. Do not release the accelerator during the test-drive.
17. Slow down to a stop. After stopping keep pressing the brake pedal for 5 seconds.
18. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0777 indicated?

YES - Replace the transmission.

NO - Go to step 19.

19. Monitor the OBD STATUS for P0777 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 18, go to the indicated DTC's troubleshooting.

NO - If the HDS indicates FAILED, check for poor connections or loose terminals between the CVT driven pulley pressure control valve and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 13.