DTC Troubleshooting
DTC Troubleshooting: P0712 (28)
DTC P0712:
Short in ATF Temperature Sensor Circuit
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- 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), or press the engine start/stop button to select the ON mode.
2. Check the ATF Temp Sensor (V) 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 an intermittent short to body ground in the ATFT wire between the ATF temperature sensor and the PCM.�
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Disconnect the ATF temperature sensor connector at the transmission end cover.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Check the ATF Temp Sensor (V) with the HDS in the A/T Data List.
Is the ATF Temp Sensor (V) 0.07 V or less?
YES -
Go to step 7.
NO -
Replace ATF temperature sensor Service and Repair, then go to step 11.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector C (49P).
10. Check for continuity between ATF temperature sensor connector terminal No. 2 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between PCM connector terminal C33 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 to ON (II), or press the engine start/stop button to select the ON mode.
13. Clear the DTC with the HDS.
14. Start the engine in P, and wait for at least 20 seconds.
15. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0712 indicated?
YES -
Check for an 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 HDS indicate PASSED?
YES -
Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 15, go to the indicated DTC's troubleshooting.�
NO -
If the HDS indicates FAILED, check for an 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 14.
17. Reconnect all connectors.
18. Update the PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good PCM.
19. Start the engine in P, and wait for at least 20 seconds.
20. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0712 indicated?
YES -
Check for an 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 19. If the PCM was substituted, go to step 1.
NO -
Go to step 21.
21. 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 20, go to the indicated DTC's troubleshooting.�
NO -
If the HDS indicates FAILED, check for an 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 19. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 19.