P0980

DTC P0980: Open in Shift Solenoid Valve C Circuit

NOTE:
^ Record all freeze data and review General Troubleshooting Information before you troubleshoot.
^ 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. Start the engine in the P position.
3. Check that DTC P0980 recurs.
Is DTC P0980 indicated?
YES - Go to step 7.
NO - Go to step 4.

4. Select Shift Solenoid C in Miscellaneous Test Menu, and test shift solenoid valve C with the HDS.
5. Start the engine in the P position.
6. Monitor the OBD status for P0980 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 7.
NO - If the tester indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the shift solenoid valve C and PCM. If the tester 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 the resistance between PCM connector terminals C2 and A9.
Is there 12 - 25 ohms?
YES - Check for loose or poor connections at PCM connector terminal C2. If the connection is OK, update the PCM if it does not have the latest software, or Substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Go to step 11.

11. Disconnect the shift solenoid harness connector at the transmission housing.





12. Measure the resistance between shift solenoid harness connector terminal No. 1 and body ground.
Is there 12 - 25 ohms?
YES - Repair open in the wire between PCM connector terminal C2 and the shift solenoid harness connector, then go to step 13.
NO - Check shift solenoid valve C, and check for an open in the shift solenoid harness in the transmission. Replace shift solenoid valve C and/or shift solenoid harness, then go to step 13.

13. Clear the DTC with the HDS.
14. Start the engine in the P position.
15. Monitor the OBD status for P0980 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 1 and recheck.