P0974
DTC P0974: Open 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 P0974 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 P0974 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 poor connections or loose terminals 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 (31P).
11. Measure resistance between PCM connector terminals C1 and E3.
Is there 12-25 ohms?
YES - Go to step 21.
NO - Go to step 12.
12. Disconnect the shift solenoid valve A connector.
13. Measure shift solenoid valve A resistance at the solenoid valve connector.
Is there 12-25 ohms?
YES - Go to step 14.
NO - Replace shift solenoid valve A, then go to step 15.
14. Check for continuity between shift solenoid valve A connector terminal No. 1 and body ground.
Is there continuity?
YES - Repair open in the wire between PCM connector terminal C1 and shift solenoid valve A, then go to step 15.
NO - Repair open in the wire between shift solenoid valve A and ground (G151), or repair poor ground (G151), then go to step 15.
15. Reconnect all connectors.
16. Turn the ignition switch ON (II).
17. Clear the DTC with the HDS.
18. Test-drive the vehicle for several minutes in the D position through all five gears.
19. Check for DTCs with the HDS.
Is DTC P0974 indicated?
YES - Check for poor connections or loose terminals between shift solenoid valve A and the PCM, then go to step 1.
NO - Go to step 20.
20. Monitor the OBD STATUS for P0974 in the DTCs MENU with HDS.
Does the screen 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 screen indicates FAILED, check for intermittent short to body ground between shift solenoid valve A and the PCM, then go to step 1. If the screen 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. Test-drive the vehicle for several minutes in the D position through all five gears.
23. Check for DTCs with the HDS.
Is DTC P0974 indicated?
YES - Check for intermittent short to body ground between shift solenoid valve C 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 P0974 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 23, go to the indicated DTC's troubleshooting. .
NO - If the screen indicates FAILED, check for intermittent short to body ground 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 screen indicates NOT COMPLETED, go to step 22.