DTC Troubleshooting
DTC Troubleshooting: P0976 (8)
DTC P0976:
Shift Solenoid Valve B Circuit (Short)
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information How To Troubleshoot The A/T System.
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
K24Z6 Engine
1. Clear the DTC with the HDS.
2. Start the engine in P, and wait for at least 1 second.
3. Check if DTC P0976 recurs.
Is DTC P0976 indicated?
YES -
Go to step 7.
NO -
Go to step 4.
4. Select Shift Solenoid Valve 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 MENU with the HDS.
Does the HDS indicate FAILED?
YES -
Go to step 7.
NO -
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check the SHB wire for intermittent short to ground between shift solenoid valve B and the PCM. If the HDS indicates NOT COMPLETED, go to step 4 P0976 and recheck.�
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector B (49P).
10. Measure the resistance between PCM connector terminal B12 and body ground.
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 terminal B12 and body ground.
Is there continuity?
YES -
Repair short in the wire between PCM connector terminal B12 and the shift solenoid harness connector, then go to step 20.
NO -
Go to step 13.
13. Inspect shift solenoid valve B Shift Solenoid Valve Test, Replacement, And Shift Solenoid Wire Harness Replacement.
Is shift solenoid valve B OK?
YES -
Go to step 14.
NO -
Replace shift solenoid valve B or the shift solenoid harness Shift Solenoid Valve Test, Replacement, And Shift Solenoid Wire Harness Replacement, 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 PCM Update, or substitute a known-good PCM Initial Inspection and Diagnostic Overview.
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 Pending or Confirmed DTCs with the HDS.
Is DTC P0976 indicated?
YES -
If the PCM was updated, substitute a known-good PCM Initial Inspection and Diagnostic Overview, 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 MENU with the HDS.
Does the HDS indicate PASSED?
YES -
If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair. If any other Pending or Confirmed DTCs were indicated on step 18 P0976, go to the indicated DTC's troubleshooting.�
NO -
If the HDS indicates FAILED, check for intermittent short to body ground in the wire between shift solenoid valve B and the PCM. If the PCM was updated, substitute a known-good PCM Initial Inspection and Diagnostic Overview, then recheck. If the PCM was substituted, reinstall the original PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 16 P0976 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 Pending or Confirmed DTCs with the HDS.
Is DTC P0976 indicated?
YES -
Check for intermittent short to body ground in the wire between 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 MENU with the HDS.
Does the HDS indicate PASSED?
YES -
Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated on step 24 P0976, go to the indicated DTC's troubleshooting.�
NO -
If the HDS indicates FAILED, check for intermittent short to body ground in the wire between shift solenoid valve B and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 22 P0976 and recheck.