P0973
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. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle for several minutes in the D position through all five gears.
4. Check for DTCs with the HDS.
Is DTC P0973 indicated?
YES - Go to step 8.
NO - Go to step 5.
5. 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 6.
NO - Go to step 8.
6. Test drive the vehicle for several minutes in the D position through all five gears.
7. Monitor the OBD STATUS for P0973 in the DTCs MENU with HDS.
Does the screen indicate FAILED?
YES - Go to step 8.
NO - 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 screen indicates NOT COMPLETED, go to step 5.
8. Turn the ignition switch OFF.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connectors B (24P), C (22P), and (31 P).
11. Measure resistance between PCM connector terminals C1 and E3.
Is there less than 12 ohms?
YES - Go to step 12.
NO - Go to step 23.
12. Disconnect the shift solenoid valve A connector.
13. Check for continuity between PCM connector terminals C1 and E3.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C1 and shift solenoid valve A, then go to step 17.
NO - Go to step 14.
14. Measure shift solenoid valve A resistance at the solenoid valve connector.
Is there 12-15 ohms?
YES - Go to step 15.
NO - Replace shift solenoid valve A, then go to step 17.
15. Turn the ignition switch ON (II).
16. Measure voltage between PCM connector terminals E10 and E3.
Is there battery voltage?
YES - Go to step 23.
NO - Check for blown No. 18 fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between PCM connector terminal E10 and the under-dash fuse/relay box, then go to step 17.
17. Reconnect all connectors.
18. Turn the ignition switch ON (II).
19. Clear the DTC with the HDS.
20. Test-drive the vehicle for several minutes in the D position through all five gears.
21. 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 22.
22. Monitor the OBD STATUS for P0973 in the DTCs MENU with HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated in step 21, go to the indicated DTC's troubleshooting.
NO - If the screen 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 screen indicates NOT COMPLETED, go to step 20.
23. Update the PCM if it does not have the latest software, or substitute a known good PCM.
24. Test-drive the vehicle for several minutes in the D position through all five gears.
25. 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 24. If the PCM was substituted, go to step 1
NO - Go to step 26.
26. Monitor the OBD STATUS for P0973 in the DTCs MENU with HDS.
Does the screen 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 25, go to the indicated DTC's troubleshooting. a
NO - If the screen 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 24. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 24.