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. 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 2.
NO - Intermittent failure, the system is OK at this time. Check for an intermittent short in the ATFT wire between the ATF temperature sensor and the PCM.
2. Disconnect the ATF temperature sensor connector at the transmission end cover.
3. Check the ATF TEMP SENSOR voltage with the HDS.
Is the ATF TEMP SENSOR voltage 0.07 V or less?
YES - Go to step 4.
NO - Go to step 8.
4. Turn the ignition switch to LOCK (0).
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector C (44P).
7. Check for continuity between ATF temperature sensor connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair a short to ground in the wire between PCM connector terminal C28 and the ATF temperature sensor connector No. 2 terminal, then go to step 9.
NO - Go to step 13.
8. Replace the ATF temperature sensor.
9. Reconnect all connectors.
10. Turn the ignition switch to ON (II).
11. Clear the DTC with the HDS.
12. Start the engine in P, and let it run for at least 20 seconds.
13. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0712 indicated?
YES - Check for poor connections or loose terminals at the ATF temperature sensor and the PCM, then go to step 1.
NO - Go to step 14.
14. 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 Temporary DTC or DTCs were indicated on step 13, go to the indicated DTCs troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals at the ATF temperature sensor and the PCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 12.
15. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
16. Start the engine in P, and let it run for at least 20 seconds.
17. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0712 indicated?
YES - Check for poor connections or loose terminals at the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 16. If the PCM was substituted, go to step 1.
NO - If Temporary DTC or DTC P0712 is not indicated, or if any other Temporary DTCs or DTCs are indicated, go to step 18.
18. 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 Temporary DTCs or DTCs were indicated on step 17, go to the indicated DTCs troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals at the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 16. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 16.