Transmission Fluid Temperature (TFT) Sensor

Transmission Electronic Control System

Transmission Fluid Temperature (TFT) Sensor

- The Transmission Fluid Temperature (TFT) sensor is a thermistor-type sensor that varies a reference voltage signal. The resistance in the TFT varies with temperature. The PCM monitors the voltage signal across the TFT and uses this information to determine the TFT.
- The TFT is located on the solenoid body.
- The PCM uses the TFT signal to determine shift scheduling, TCC control and pressure control requirements.

It sends a voltage signal to the PCM. The voltage signal varies with TFT. The PCM uses this signal to determine whether to use a cold start shift schedule. The shift schedule is compensated when the TFT is cold. The PCM also inhibits TCC operation at low TFT and uses it to determine pressure control solenoid operations.