P0973
DTC P0973: Short in Shift Solenoid Valve A CircuitNOTE:
^ Before you troubleshoot, record all freeze data-and any on-board snapshot with the HDS, 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. Turn the ignition switch to ON (II).
2. Clear the DTC: with the HDS.
3. Test-drive the vehicle in 2nd gear with the shift lever in D, for at least 1 second.
4. Check for DTCs with the HDS.
Is DTC P0973 indicated?
YES - Go to step 8.
NO - Go to step 5.
5. Select Shift Solenoid Valve A in the Miscellaneous Test Menu, and test shift solenoid valve A with the HDS.
Is a clicking sound heard?
YES - Go to step 6.
NO - Go to step 8.
6. Test-drive the vehicle in 2nd gear with the shift lever in D, for at least 1 second.
7. Monitor the OBD STATUS for P0973 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 intermittent short to body ground in the wire between shift solenoid valve A and the PCM. If the HDS indicates NOT COMPLETED, go to step 5.
8. Turn the ignition switch to LOCK (0).
9. Jump the SCS line with the HDS.
10. Disconnect PCM connectors B (44P) and C (44P).
11. Measure the resistance between PCM connector terminals B10 and C40.
Is there less than 12 ohms
YES - Go to step 12.
NO - Go to step 21.
12. Disconnect the shift solenoid harness connector.
13. Check for continuity between PCM connector terminals B10 and C40.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal B10 and the shift solenoid harness connector, then go to step 15.
NO - Go to step 14.
14. Inspect shift solenoid valve A and the shift solenoid harness.
Is shift solenoid valve A and the harness OK
YES - Go to step 21.
NO - Replace shift solenoid valve A or the shift solenoid harness, then go to step 15.
15. Reconnect all connectors.
16. Turn the ignition switch to ON (II).
17. Clear the DTC with the HDS.
18. Start the engine with the shift lever in P, and wait for at least 1 second. Then drive the vehicle in 2nd gear in D, for at least 1 second.
19. Check for DTCs with the HDS.
Is DTC P0973 indicated?
YES - Check for intermittent short to body ground in the wire between shift solenoid valve A and the PCM, then go to step 1.
NO - Go to step 20.
20. Monitor the OBD STATUS for P0973 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated in step 19, 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 A and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 18.
21. Update the PCM if it does not have the latest software, or substitute a known, good PCM.
22. Start the engine with the shift lever in P, and wait for at least 1 second. Then drive the vehicle in 2nd gear in D, for, at least 1 second.
23. Check for DTCs with the HDS.
Is DTC P0973 indicated?
YES - Check for intermittent short to body ground in the wire between shift solenoid valve A and the PCM. If the PCM was updated, substitute a known good PCM, then go to step 22. If the PCM was substituted, go to step 1.
NO - Go to step 24.
24. Monitor the OBD STATUS for P0973 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. If any other DTCs were indicated in step 23, 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 A and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 22. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 22.