Automatic Transmission
DTC P0980: Open in Shift Solenoid Valve C 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. Start the engine in the P position, and wait for at least 1 second.
4. Test-drive the vehicle in 1st gear in the D position for at least 1 second.
5. Check for DTCs with the HDS.
Is DTC P0980 indicated?
YES - Go to step 9.
NO - Go to step 6.
6. Select Shift Solenoid C in the Miscellaneous Test Menu, and test shift solenoid valve C with the HDS.
Is a clicking sound heard?
YES - Go to step 7.
NO - Go to step 9.
7. Start the engine in the P position, and wait for at least 1 second.
8. Test-drive the vehicle in 1st gear in the D position for at least 1 second.
9. Monitor the OBD STATUS for P0980 in the DTCs MENU with the HDS.
Does the screen indicate FAILED?
YES - Go to step 10.
NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals between shift solenoid valve C and the PCM. If the screen indicates NOT COMPLETED, go to step 6.
10. Turn the ignition switch OFF.
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector C (44P).
13. Measure the resistance between PCM connector terminals C18 and C40.
Is there 12 - 25 ohms?
YES - Go to step 25.
NO - Go to step 14.
14. Disconnect the solenoid harness connector.
15. Check for continuity between PCM connector terminal C18 and solenoid harness connector terminal No. 2.
Is there continuity?
YES - Go to step 16.
NO - Repair open in the wire between PCM connector terminal C18 and the solenoid harness connector, then go to step 18.
16. Remove the solenoid harness connector.
17. Check for continuity between solenoid harness connector terminal No. 2 and the shift solenoid valve C connector terminal.
Is there continuity?
YES - Replace shift solenoid valve C, then go to step 18.
NO - Replace the solenoid harness, then go to step 18.
18. Reconnect all connectors.
19. Turn the ignition switch ON (II).
20. Clear the DTC with the HDS.
21. Start the engine in the P position, and wait for at least 1 second.
22. Test-drive the vehicle in 1st gear in the D position for at least 1 second.
23. Check for DTCs with the HDS.
Is DTC P0980 indicated?
YES - Check for poor connections or loose terminals between shift solenoid valve C and the PCM, then go to step 1.
NO - Go to step 24.
24. Monitor the OBD STATUS for P0980 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated in step 23, go to the indicated DTC's troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals between shift solenoid valve C and the PCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 21.
25. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
26. Start the engine in the P position, and wait for at least 1 second.
27. Test-drive the vehicle in 1st gear in the D position for at least 1 second.
28. Check for DTCs with the HDS.
Is DTC P0980 indicated?
YES - Check for poor connections or loose terminals between shift solenoid valve C 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 29.
29. Monitor the OBD STATUS for P0980 in the DTCs MENU with the 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 28, go to the indicated DTC's troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals between shift solenoid valve C 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 screen indicates NOT COMPLETED, go to step 26.