Transmission Fluid Temperature (TFT) Sensor

The TCM utilizes one transmission fluid temperature sensor located on the main control valve body. The TCM uses the sensor input to activate various shift strategies.

The sensor is in the form of a temperature dependent resistor. The temperature sensor performs plausibility checks on each sensor reading. Obviously, the transmission oil temperature should not jump in value excessively between sensor readings. If the inputs from the temperature sensor are outside the working range it possible that the sensor is short or open circuit.