P0977

DTC P0977: Open in Shift Solenoid Valve B Circuit

2006 Model

NOTE:
^ Record all freeze data and review General Troubleshooting Information before you troubleshoot.
^ This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Clear the DTC with the HDS.
2. Test drive the vehicle for several minutes in the D position through all five gears.
3. Check that DTC P0977 recurs.
Is DTC P0977 indicated?
YES - Go to Step 7.
NO - Go to step 4.

4. Choose Shift Solenoid B in Miscellaneous Test Menu, and test shift solenoid valve B with the HDS.
5. Test drive the vehicle for several minutes in the D position through all five gears.
6. Monitor the OBD status for P0977 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to Step 7.
NO - If the tester indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at shift solenoid valve B and PCM. If the tester indicates NOT COMPLETED, return to step 4 and recheck.

7. Turn the ignition switch OFF.
8. Jump the SCS line with HDS.
9. Disconnect PCM connectors A (31P) and C (22P).





10. Measure the resistance between PCM connector terminals C8 and A3.
Is there 12 - 25 Ohms?
YES - Check for loose or poor connections at PCM connector terminal C8. If the connection is OK, update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Go to Step 11.

11. Disconnect shift solenoid valve B connector.





12. Measure the resistance between the shift solenoid valve B connector terminals.
Is there 12 - 25 Ohms?
YES - Go to Step 13.
NO - Replace shift solenoid valve B, then go to step 14.





13. Check for continuity between shift solenoid valve B connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair open in the wire between PCM connector terminal C8 and shift solenoid valve B, then go to step 14.
NO - Repair open in the wire between shift solenoid valve B and ground (G151), or repair poor ground (G151), then go to step 14.

14. Clear the DTC with the HDS.
15. Test-drive the vehicle for several minutes in the D position through all five gears.
16. Monitor the OBD status for P0977 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 7 and recheck.