Transmission Fluid Temperature Sensor
The Transmission Fluid Temperature (TFT) sensor is located on the solenoid body assembly in the transmission sump. The Powertrain Control Module (PCM) monitors voltage across the TFT sensor to determine transmission oil temperature. Depending on oil temperature, the PCM controls shift scheduling and Torque Converter Clutch (TCC) operation. TFT sensor inhibits TCC operation during warm-up and locks TCC if transmission fluid temperature is too high. Malfunction of sensor will cause incorrect line pressure and possible lack of TCC operation.