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. Turn the ignition switch to ON (II).

2. 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 3.

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.�

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

YES -

Go to step 7.

NO -

Replace the ATF temperature sensor Service and Repair, 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 B (44P).

10. 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 B27 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 PCM Update, or substitute a known-good PCM Initial Inspection and Diagnostic Overview.

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

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

Is DTC P0712 indicated?

YES -

If the PCM was updated, substitute a known-good PCM Initial Inspection and Diagnostic Overview, then go to step 13. If the PCM was substituted, go to step 1.

NO -

Go to step 15.

15. 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 14, 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 Initial Inspection and Diagnostic Overview, then go to step 13. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 13.

16. Reconnect all connectors.

17. Clear the DTC with the HDS.

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

19. 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 20.

20. 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 19, 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. If the HDS indicates NOT COMPLETED, go to step 18.