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. Turn the ignition switch to ON (II), and wait for 20 seconds.
2. Check the ATF temperature sensor voltage with the HDS in the A/T data list.
Is 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 an intermittent short in the wire between the ATF temperature sensor and the PCM.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the ATF temperature sensor connector at the transmission end cover.
5. Turn the ignition switch to ON (II).
6. Check the ATF temperature sensor voltage with the HDS.
Is ATF TEMP SENSOR voltage 0.07 V or less?
YES - Go to step 7.
NO - Replace the ATF temperature sensor, then go to step 16.
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 ATF temperature sensor connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM connector terminal C3 and ATF temperature sensor connector terminal No. 2, then go to step-16.
NO - Go to step 11.
11. Reconnect all connectors.
12. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
13. Turn the ignition switch to ON (II), and wait for 20 seconds, then start the engine in P. Run the engine for at least 10 seconds.
14. 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 15.
15. Monitor the OBD STATUS for P0712 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS 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 14, go to the indicated DTC's troubleshooting.
NO - 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 13 and recheck.
16. Reconnect all connectors.
17. Clear the DTC with the HDS.
18. Turn the ignition switch to ON (II), and wait for 20 seconds, then start the engine in P. Run the engine for at least 10 seconds.
19. 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 20.
20. Monitor the OBD STATUS for P0712 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated on step 19, go to the indicated DTC's troubleshooting.
NO - Check for poor connections and loose terminals at the ATF temperature sensor and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 18 and recheck.