Transmission
DTC P0973: Short in Shift Solenoid Valve A 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. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
3. Check that DTC P0973 recurs.
Is DTC P0973 indicated?
YES - Go to step 7.
NO - Go to step 4.
4. Choose Shift Solenoid A in Miscellaneous Test Menu, and test shift solenoid valve A with the HDS.
Is a clicking sound heard?
YES - Go to step 5.
NO - Go to step 7.
5. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
6. Monitor the OBD status for P0973 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 7.
NO - Intermittent failure, the system is OK at this time. Check for an intermittent short to ground in the wire between shift solenoid valve A and the PCM. If the HDS indicates NOT COMPLETED, return to step 4 and recheck.
7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connectors A (31P) and C (22P).
10. Measure resistance between PCM connector terminals C6 and A9.
Is there less than 12 Ohms?
YES - Go to step 11.
NO - Go to step 17.
11. Disconnect the shift solenoid harness connector.
12. Check for continuity between PCM connector terminals C6 and A9.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C6 and the shift solenoid harness connector, then go to step 14.
NO - Go to step 13.
13. Inspect shift solenoid valve A and the shift solenoid harness.
Are shift solenoid valve A and the harness OK?
YES - Go to step 17.
NO - Replace shift solenoid valve A or the shift solenoid harness, then go to step 14.
14. Clear the DTC with the HDS.
15. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
16. Monitor the OBD status for P0973 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Check for intermittent short to body ground in the wire between shift solenoid valve A and the PCM, then go to step 1.
17. Update the PCM if it does not have latest software, or substitute a known-good PCM.
18. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
19. Monitor the OBD status for P0973 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.
NO - If the PCM was updated and screen indicates FAILED, substitute a known-good PCM, then go to step 18. If the PCM was substituted, check for intermittent short to body ground in the wire between shift solenoid valve A and the PCM, then go to step 1 and recheck. If the screen indicates NOT COMPLETED, go to step 18.