DTC Troubleshooting

DTC Troubleshooting: P0712 (28)

DTC P0712:

ATF Temperature Sensor (Short)

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information How To Troubleshoot The A/T System.
- 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 (V) 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 TATF wire between the ATF temperature sensor and the PCM.�

2. Turn the ignition switch to LOCK (0).

3. Disconnect the ATF temperature sensor connector at the transmission end cover.

4. Turn the ignition switch to ON (II).

5. Check the ATF temperature sensor voltage with the HDS.

Is the ATF Temp Sensor (V) 0.07 V or less?

YES -

Go to step 6.

NO -

Replace ATF temperature sensor Service and Repair, then go to step 15.

6. Turn the ignition switch to LOCK (0).

7. Jump the SCS line with the HDS.

8. Disconnect PCM connector C (49P).

9. Check for continuity between ATF temperature sensor connector terminal No. 2 and body ground.





Is there continuity?

YES -

Repair short to body ground in the wire between PCM connector terminal C33 and ATF temperature sensor connector terminal No. 2, then go to step 15.

NO -

Go to step 10.

10. Reconnect all connectors.

11. Update the A/T software in the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM.

12. Start the engine in P, and wait for at least 20 seconds.

13. Check for Pending or Confirmed DTCs 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 14.

14. Monitor the OBD STATUS for P0712 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair. If any other Pending or Confirmed DTCs were indicated in step 13, go to the indicated DTC's troubleshooting.�

NO -

If the HDS indicates FAILED, check for intermittent short to body ground in the wire between 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, go to step 12.

15. Reconnect all connectors.

16. Clear the DTC with the HDS.

17. Start the engine in P, and wait for at least 20 seconds.

18. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0712 indicated?

YES -

Check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1.

NO -

Go to step 19.

19. Monitor the OBD STATUS for P0712 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 18, go to the indicated DTC's troubleshooting.�

NO -

If the HDS indicates FAILED, check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1 and recheck. If the HDS indicates NOT COMPLETED, go to step 17 and recheck.