Automatic Transmission
DTC P0766: Shift Solenoid Valve D Stuck OFFNOTE: 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 then 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 13.
NO - Replace the ATF, then go to step 4.
4. Clear the DTC with the HDS.
5. Test-drive the vehicle for several minutes with the shift lever in D, and let the transmission shift through all five gears at least 11 seconds.
6. Turn the ignition switch to LOCK (0), then repeat the test-drive in step 5, then go to step 7.
7. Monitor the OBD STATUS for P0766 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 8.
NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, return to step 5 and recheck.
8. Clear the DTC with the HDS.
9. Select Shift Solenoid D in the Miscellaneous Test Menu, and check then shift solenoid valve D operates with the HDS.
Is a clicking sound heard?
YES - Go to step 10.
NO - Replace shift solenoid valve D, then go to step 13.
10. Test-drive the vehicle for several minutes with the shift lever in D, and let the transmission shift through all five gears at least 11 seconds.
11. Turn the ignition switch to LOCK (0), then repeat the test-drive in step 10, then go to step 12.
12. Monitor the OBD STATUS for P0766 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Repair shift valve D, or replace the transmission, then go to step 13.
NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, return to step 10 and recheck.
13. Test-drive the vehicle for several minutes with the shift lever in D, and let the transmission shift through all five gears at least 11 seconds.
14. Turn the ignition switch to LOCK (0), then repeat the test-drive in step 13, then go to step 15.
15. Monitor the OBD STATUS for P0766 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - If the HDS indicates FAILED, return to step 1 and recheck. If the HDS indicates NOT COMPLETED, return to step 13 and recheck.