DTC Troubleshooting
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 temperature sensor voltage with the HDS in the A/T data list.
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 - Replace the ATF temperature sensor, then go to step 12.
4. Turn the ignition switch OFF.
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector B (44P).
7. Check for continuity between ATF temperature sensor connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal B27 and ATF temperature sensor connector terminal No. 2, then go to step 12.
NO - Go to step 8.
8. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
9. Test-drive the vehicle for several minutes in the D position through all five gears.
10. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0712 indicated?
YES - If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1.
NO - Go to step 11.
11. Monitor the OBD status for P0712 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result 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 on step 10, go to the indicated DTC's troubleshooting.
NO - If the HDS indicates FAILED, check for poor connections and loose terminals at the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, return to step 9 and recheck.
12. Clear the DTC with the HDS.
13. Test-drive the vehicle for several minutes in the D position through all five gears.
14. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0712 indicated?
YES - Check for poor connections and loose terminals at the ATF temperature sensor and the PCM, then go to step 1.
NO - Go to step 15.
15. Monitor the OBD status for P0712 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated on step 14, go to the indicated DTC's troubleshooting.
NO - If the HDS indicates FAILED, go to step 1. If the HDS indicates NOT COMPLETED, return to step 13 and recheck.