Aisin 81-40LE - Automatic Transmission (Non European Emissions)

DTC P0712 (Non European Emissions)

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0712 Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage

Conditions for Setting the DTC

* The transmission control module (TCM) detects that the analog-to-digital (A/D) value of the transmission fluid temperature (TFT) sensor signal is less than 10 for 5 minutes continuously after 1 occurrence of this detection. A/D value 10: 24 Mv
* The TCM does not detect pass criteria achieved.

Action Taken When the DTC Sets

* TCM will request the illumination of hold lamp and store DTC when TCM detects a failure on the first ignition cycle.
* TCM judges the temperature of the transmission fluid is 200°C (392°F)
* No lockup control
* No 4th gear
* No self-learning control
* No timing solenoid control N-D

Conditions for Clearing the DTC

* The TCM turns off the hold lamp when no further failures are detected on the next ignition cycles.
* The scan tool can clear the DTC from the TCM history.
* The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault.
* The TCM detects the temperature of the transmission fluid is between 0° and 150°C (302°F) for 10 seconds continuously.

Cause of Failure

* Wiring harness or connector between TFT sensor and TCM
* TFT sensor
* TCM