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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.
  • 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 an intermittent short in the ATFT wire between the ATF temperature sensor and the PCM.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the shift solenoid harness connector at the shift solenoid valve cover.
  1. Turn the ignition switch to ON (II).
  1. 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 -
  1. Turn the ignition switch to LOCK (0).
  1. Jump the SCS line with the HDS.
  1. Disconnect PCM connector B (49P).
  1. 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 B28 and shift solenoid harness connector terminal No. 6, then go to Step 16 .
NO -
Go to Step 10 .

  1. Check for continuity between shift solenoid harness connector terminal No. 6 and body ground.
Is there continuity?
YES -
NO -
Go to Step 11 .
  1. Reconnect all connectors.
  1. Start the engine in P, and wait for at least 20 seconds.
  1. Check for Temporary DTCs or 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 15 .
  1. 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 14 , go to the indicated DTC's troubleshooting.■
NO -
Check for an intermittent short 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 13 and recheck.
  1. Reconnect all connectors.
  1. Clear the DTC with the HDS.
  1. Start the engine in P, and wait for at least 20 seconds.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0712 indicated?
YES -
Check for an intermittent short in the wire between the ATF temperature sensor and the PCM, then go to Step 1 .
NO -
Go to Step 20 .
  1. 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 -
Troubleshooting is complete. If any other DTCs were indicated on Step 19 , go to the indicated DTC's troubleshooting.■
NO -
Check for an intermittent short in the wire between the ATF temperature sensor and the PCM. If the HDS indicates NOT COMPLETED, return to Step 18 and recheck.