DTC Troubleshooting
DTC P0976: Short in Shift Solenoid Valve B CircuitNOTE:
^ Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
^ 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. Start the engine in P, and wait for at least 1 second.
3. Check that DTC P0976 recurs.
Is DTC P0976 indicated?
Yes - Go to step 7.
No - Go to step 4.
4. Select Shift Solenoid B in the Miscellaneous Test Menu, and test shift solenoid valve B with the HDS.
Is a clicking sound heard?
Yes - Go to step 5.
No - Go to step 7.
5. Start the engine in P, and wait for at least 1 second.
6. Monitor the OBD STATUS for P0976 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate FAILED?
Yes - Go to step 7.
No - Intermittent failure, the system is OK at this time. Check the SH B wire for an intermittent short to ground between shift solenoid valve B and the PCM. If the HDS indicates NOT COMPLETED, return to step 4 and recheck.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connectors B (44P) and C (44P).
10. Measure the resistance between PCM connector terminals B11 and C40.
Is there less than 12 Ohms?
Yes - Go to step 11.
No - Go to step 14.
11. Disconnect the shift solenoid harness connector.
12. Check for continuity between PCM connector terminals B11 and C40.
Is there continuity?
Yes - Repair short in the wire between PCM connector terminal B11 and the shift solenoid harness connector, then go to step 20.
No - Go to step 13.
13. Inspect shift solenoid valve B. Is shift solenoid valve B OK?
Yes - Go to step 14.
No - Replace shift solenoid valve B or the shift solenoid harness, then go to step 20.
14. Reconnect all connectors.
15. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
16. Start the engine in P, and wait for at least 1 second.
17. Test-drive the vehicle so that it shifts from 1st to 3rd gear in D, then drive the vehicle in 3rd gear for at least 1 second. Slow down and stop the wheels.
18. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0976 indicated?
Yes - If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, reinstall the original PCM, then go to step 1.
No - Go to step 19.
19. Monitor the OBD STATUS for P0976 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
Yes - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other DTCs were indicated on step 18, go to the indicated DTC's troubleshooting.
No - Check for poor connections and loose terminals at shift solenoid valve B and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, reinstall the original PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 16 and recheck.
20. Reconnect all connectors.
21. Clear the DTC with the HDS.
22. Start the engine in P, and wait for at least 1 second.
23. Test-drive the vehicle so that it shifts from 1st to 3rd gear in D, then drive the vehicle in 3rd gear for at least 1 second. Slow down and stop the wheels.
24. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0976 indicated?
Yes - Check for poor connections and loose terminals at shift solenoid valve B and the PCM, then go to step 1.
No - Go to step 25.
25. Monitor the OBD STATUS for P0976 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
Yes - Troubleshooting is complete. If any other DTCs were indicated on step 24, go to the indicated DTC's troubleshooting.
No - Check for poor connections and loose terminals at shift solenoid valve B and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 22 and recheck.