P0712

DTC P0712: Short in ATF Temperature Sensor Circuit

NOTE:
^ Record all freeze data 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 ATF temperature sensor voltage with the HDS in the A/T data list.
Is ATF temperature sensor voltage 0.07 V or less?
YES - Go to step 2.
NO - Intermittent failure, the system is OK at this time. Check for intermittent short in the wires between the ATF temperature sensor and PCM.
2. Disconnect the ATF temperature sensor connector at the transmission end cover.
3. Check ATF temperature sensor voltage with the HDS.
Is ATF temperature sensor voltage 0.07 V or less?
YES - Go to step 4.
NO - Replace ATF temperature sensor, then go to step 8.
4. Turn the ignition switch OFF.
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector C (22P).





7. Check for continuity between ATF temperature sensor connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair short to ground between PCM connector terminal C3 and the ATF temperature sensor connector terminal No. 2 then, go to step 8.
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.
8. Clear the DTC with the HDS.
9. Test-drive the vehicle for several minutes in the D position through all five gears.
10. 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.
NO - Return to step 1 and recheck.