DTC Troubleshooting
DTC Troubleshooting: P0976 (8)
DTC P0976:
Short in Shift Solenoid Valve B Circuit
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine in P, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0976 indicated?
YES -
Go to step 8.
NO -
Go to step 5.
5. 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 6.
NO -
Go to step 8.
6. Start the engine in P, and wait for at least 1 second.
7. Monitor the OBD status for P0976 in the DTCs MENU with the HDS.
Does the HDS indicate FAILED?
YES -
Go to step 8.
NO -
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for an intermittent short to body ground in the wire between shift solenoid valve B and the PCM. If the HDS indicates NOT COMPLETED, go to step 5.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Measure the resistance between PCM connector terminal C28 and body ground.
Is there less than 12 Ohms?
YES -
Go to step 12.
NO -
Go to step 24.
12. Disconnect the shift solenoid wire harness connector.
13. Check for continuity between PCM connector terminal C28 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between PCM connector terminal C28 and the shift solenoid wire harness connector, then go to step 18.
NO -
Go to step 14.
14. Test shift solenoid valve B Shift Solenoid Valve Test, Replacement, and Shift Solenoid Wire Harness Replacement (A/T).
Is shift solenoid valve B OK?
YES -
Go to step 15.
NO -
Replace shift solenoid valve B or the shift solenoid wire harness Shift Solenoid Valve Test, Replacement, and Shift Solenoid Wire Harness Replacement (A/T), then go to step 21.
15. Disconnect PCM connector B (49P).
16. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
17. Measure the voltage between PCM connector terminal B2 and body ground.
Is there battery voltage?
YES -
Go to step 24.
NO -
Check foe a blown No. 13 (15 A) fuse in the driver's under-dash fuse/relay box. If the fuse is blown, replace it. If the fuse blows again, repair a short in the No. 13 (15 A) fuse circuit. If the fuse is OK, repair an open in the wire between PCM connector terminal B2 and the driver's under-dash fuse/relay box, then go to step 18.
18. Reconnect all connectors.
19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
20. Clear the DTC with the HDS.
21. Start the engine in P, wait for at least 1 second, then test-drive the vehicle in D. Drive the vehicle in 3rd or 4th gear for at least 1 second. Slow down, and stop the wheels.
22. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0976 indicated?
YES -
Check for an 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 23.
23. 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 in step 22, go to the indicated DTC's troubleshooting.�
NO -
If the HDS indicates FAILED, check for an 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 21.
24. Reconnect all connectors.
25. Update the PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good PCM.
26. Start the engine in P, wait for at least 1 second, then test-drive the vehicle in D. Drive the vehicle in 3rd or 4th gear for at least 1 second. Slow down, and stop the wheels.
27. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0976 indicated?
YES -
Check for an 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, then go to step 26. If the PCM was substituted, go to step 1.
NO -
Go to step 28.
28. 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 in step 27, go to the indicated DTC's troubleshooting.�
NO -
If the HDS indicates FAILED, check for an 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, then go to step 26. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 26.