DTC Troubleshooting

DTC P0712: Short in ATF Temperature Sensor Circuit

NOTE:
^ 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 ON (II).
2. Check the ATF TEMP SENSOR voltage in the DATA LIST with the HDS.
Is the 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 intermittent short to body ground in the ATFT wire between the ATF temperature sensor and the PCM.

3. Turn the ignition switch OFF.
4. Disconnect the ATF temperature sensor connector.
5. Turn the ignition switch ON (II).
6. Check the ATF TEMP SENSOR voltage in the DATA LIST with the HDS.
Is the ATF TEMP SENSOR voltage 0.07 V or less?
YES - Go to step 7.
NO - Replace the ATF temperature sensor, then go to step 11

7. Turn the ignition switch OFF.
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 to body ground in the wire between PCM connector terminal C3 and ATF temperature sensor connector terminal No. 2, then go to step 11.
NO - Go to step 17.

11. Reconnect all connectors.
12. Turn the ignition switch ON (II).
13. Clear the DTC with the HDS.
14. Test-drive the vehicle for several minutes in the D position through all five gears.
15. Check for 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 16.

16. Monitor the OBD STATUS for P0712 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other DTCs were indicated in step 15, go to the indicated DTC's troubleshooting.
NO - If the screen 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 screen indicates NOT COMPLETED, go to step 14.

17. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
18. Test-drive the vehicle for several minutes in the D position through all five gears.
19. Check for 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. If the PCM was updated, substitute a known-good PCM, then go to step 18. If the PCM was substituted, 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 screen 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 in step 19, go to the indicated DTC's troubleshooting.
NO - If the screen 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 go to step 18. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 18.