Automatic Transmission
DTC P0712: Short in ATF Temperature Sensor 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 to ON (II).
2. Check the ATF TEMP SENSOR voltage in the DATA LIST with the HDS.
Is the ATF TEMP SENSOR voltage 0.07 V or less?
YES - Go to step 3.
NO - Intermittent failure, the system is OK at this time. Check for intermittent short to body ground in the ATFT wire between the ATF temperature sensor and the PCM.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the shift solenoid harness connector.
5. Turn the ignition switch to ON (II).
6. Check the ATF TEMP SENSOR voltage in the DATA LIST with the HDS.
Is the ATF TEMP SENSOR voltage 0.07 V or less?
YES - Go to step 7.
NO - Go to step 11.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector C (22P).
10. Check for continuity between shift solenoid harness connector terminal No. 6 and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between PCM connector terminal C14 and shift solenoid harness connector terminal No. 6, then go to step 12.
NO - Go to step 11.
11. Check for continuity between shift solenoid harness connector terminal No. 6 and body ground.
Is there continuity?
YES - Replace the ATF temperature sensor, then go to step 12.
NO - Go to step 18.
12. Reconnect all connectors.
13. Turn the ignition switch to ON (II).
14. Clear the DTC with the HDS.
15. Start the engine with the shift lever in P, and wait for at least 20 seconds.
16. Check for DTCs with the HDS.
Is DTC P0712 indicated?
YES - Check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1.
NO - Go to step 17.
17. Monitor the OBD STATUS for P0712 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated in step 16, go to the indicated DTC's troubleshooting.
NO - If the screen indicates FAILED, check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 15.
18. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
19. Start the engine with the shift lever in P, and wait for at least 20 seconds.
20. Check for DTCs with the HDS.
Is DTC P0712 indicated?
YES - Check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 19. If the PCM was substituted, go to step 1.
NO - Go to step 21.
21. Monitor the OBD STATUS for P0712 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 20, go to the indicated DTC's troubleshooting.
NO - If the screen indicates FAILED, check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 19. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 19.