DTC Troubleshooting: P0712 (28-3)

DTC P0712:  Short in ATF Temperature Sensor Circuit

NOTE:

1.Check ATF temperature sensor voltage with the HDS in the A/T data list.

Is ATF temperature sensor voltage 0.07 V or less?


YES - Go to 2.


NO - Intermittent failure, the system is OK at this time. Check for intermittent short in the wires between the ATF temperature sensor and PCM.n


2.Disconnect the shift solenoid harness connector at the shift solenoid valve cover.

3.Check ATF temperature sensor voltage with the HDS.

Is ATF temperature sensor voltage 0.07 V or less?


YES - Go to 4.


NO - Check for a short to ground in the shift solenoid harness wire in the transmission. If the wire is OK, replace ATF temperature sensor, then go to 8.


4.Turn the ignition switch OFF.

5.Jump the SCS line with the HDS.

6.Disconnect PCM connector C (22P).

7.Check for continuity between shift solenoid harness connector terminal No. 6 and body ground.

 

Is there continuity?


YES - Repair short to ground in the wire between PCM connector terminal C14 and the shift solenoid harness connector, then go to 8.


NO - Check for a short to ground in the shift solenoid harness wire in the transmission. If the wire is OK, update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original  PCM.n


8.Clear the DTC with the HDS.

9.Test-drive the vehicle for several minutes in the D position in all five gears.

10.Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P0712.

Did the result indicate a pass?


YES - The problem has been corrected.n


NO - Return to 1 and recheck.n