P0973

DTC P0973: Short in Shift Solenoid Valve A 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, and shift to the D position.
3. Check that DTC P0973 recurs.
Is DTC P0973 indicated?
YES - Go to step 7.
NO - Go to step 4.

4. Select Shift Solenoid A in Miscellaneous Test Menu, and test shift solenoid valve A with the HDS.
5. Start the engine, and shift to the D position.
6. Monitor the OBD status for P0973 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 the BLU/BLK wire for an intermittent short to ground between shift solenoid valve A 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 C6 and A9.
Is there less than 12 Ohms?
YES - Go to step 11.
NO - 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.

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





12. Check for continuity between PCM connector terminals C6 and A9.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal C6 and the shift solenoid harness connector, then go to step 13.
NO - Check shift solenoid valve A, and check for a short in the shift solenoid harness in the transmission. Replace shift solenoid valve A and/or shift solenoid harness, then go to step 13.

13. Clear the DTC with the HDS.
14. Start the engine, and shift to the D position.
15. Monitor the OBD status for P0973 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.