P0974

DTC P0974: Open 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. Check that DTC P0974 recurs.
Is DTC P0974 indicated ?
YES - Go to step 5.
NO - Go to step 3.
3. Select SHIFT SOL TEST in MISC. TEST MENU, then carry out A/T SHIFT SOL A test in SHIFT SOL TEST MENU with the HDS.
4. Start the engine in the P position.
5. Check the OBD STATUS in DTCs MENU for a pass/fail test for code P0974.
Did the result indicate a fail?
YES - Go to step 6.
NO - Intermittent failure, the system is OK at this time. If the tester indicates NOT COMPLETE, return to step 3 and recheck.
6. Turn the ignition switch OFF.
7. Jump the SCS line with the HDS.
8. Disconnect PCM connector A (73P).





9. Measure the resistance between PCM connector terminals A11 and A39 or A40.
Is there 12 - 25 ohms ?
YES - Check for loose or poor connections at PCM connector terminal A11. If the connections are 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 10.
10. Inspect shift solenoid valve A.
Is shift solenoid valve A OK ?
YES - Go to step 11.
NO - Replace shift solenoid valve A, then go to step 13.
11. Remove the solenoid harness.





12. Check for continuity between solenoid harness connector terminal No. 4 and shift solenoid valve A connector terminal.
Is there continuity ?
YES - Repair open in the wire between PCM connector terminal A11 and solenoid harness connector, then go to step 13.
NO - Replace solenoid harness, then go to step 13.
13. Clear the DTC with the HDS.
14. Start the engine in the P position.
15. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0974.
Did the result indicate a pass?
YES - The problem has been corrected.
NO - Return to step 1 and recheck.