P0973
DTC P0973: Short in Shift Solenoid Valve A CircuitNOTE:
^ 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. Test-drive the vehicle for several minutes in the D position in all five gears.
3. Check that DTC P0973 recurs.
Is DTC P0973 indicated?
YES-Go to step 7.
NO-Go to step 4.
4. Choose Shift Solenoid A in Miscellaneous Test Menu, and test the shift solenoid valve A with the HDS.
Is the system normal?
YES-Go to step 5.
NO-Go to step 6.
5. Test-drive the vehicle for several minutes in the D position in all five gears.
6. Monitor the OBD status for P0973 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate a fail?
YES-Go to step 7.
NO-Intermittent failure, the system is OK at this time. Check BLU/YEL wire for an intermittent short to ground between shift solenoid valve A and PCM. If the tester indicates NOT COMPLETE, return to step 4 and recheck.
7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connectors B (44P) and C (44P).
10. Measure the resistance between PCM connector terminals C25 and C40 or B43.
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 shift solenoid valve A connector.
12. Check for continuity between PCM connector terminals C25 and C40 or B43.
Is there continuity?
YES-Repair short to ground in the wire between PCM connector terminal C25 and shift solenoid valve A, then go to step 16.
NO-Go to step 13.
13. Measure shift solenoid valve A resistance at the solenoid valve connector.
Is there 12 - 15 Ohms?
YES-Go to step 14.
NO-Replace shift solenoid valve A, then go to step 16.
14. Turn the ignition switch ON (II).
15. Measure the voltage between PCM connector terminals B2 and B43 or C40.
Is there battery voltage?
YES-Check for loose or poor connections at PCM connector terminal B2. 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-Check for blown No. 18 fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between PCM connector terminal B2 and the under-dash fuse/relay box, then go to step 16.
16. Clear the DTC with the HDS.
17. Test-drive the vehicle for several minutes in the D position in all five gears.
18. Monitor the OBD status for P0973 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate a pass?
YES-The problem has been corrected.
NO-Return to step 1 and recheck.