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 shift solenoid harness connector at the shift solenoid valve 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 and the solenoid harness, then go to step 15.
4. Turn the ignition switch to LOCK (0).
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector B (44P).
7. Check for continuity between shift solenoid harness connector terminal No. 6 and body ground.
Is there continuity?
Yes - Repair short in the wire between PCM connector terminal B27 and shift solenoid harness connector terminal No. 6, then go to step 14.
No - Go to step 8.
8. Check for continuity between shift solenoid harness connector terminal No. 6 and body ground.
Is there continuity?
Yes - Replace the ATF temperature sensor and solenoid harness, then go to step 14.
No - Go to step 9.
9. Reconnect all connectors.
10. Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.
11. With the shift lever in P, turn the ignition switch to ON (II), and wait for 20 seconds. Then start the engine, and let it idle for at least 10 seconds.
12. 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, reinstall the original PCM, then go to step 1.
No - Go to step 13.
13. 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 12, 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, reinstall the original PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 11 and recheck.
14. Reconnect all connectors.
15. Clear the DTC with the HDS.
16. With the shift lever in P, turn the ignition switch to ON (II), and wait for 20 seconds. Then start the engine, and wait for at least 10 seconds.
17. Check for DTC(s) in the DTCs/Freeze Data in 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 18.
18. Monitor the OBD STATUS for P0712 in the DTCs/Freeze Data in Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
Yes - Troubleshooting is complete. If any other DTCs were indicated on step 17, go to the indicated DTC's troubleshooting.
No - Return to step 1. If the HDS indicates NOT COMPLETED, return to step 16 and recheck.