Transmission Fluid Temperature (TFT) Sensor
WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The TFT sensor twist-locks into the solenoid body. The TFT is a temperature-sensitive device called a thermistor. As the TFT rises, the TFT sensor resistance decreases. The PCM monitors the voltage across the TFT sensor to determine TFT . The PCM uses the TFT signal as an input to determine cold and hot temperature shift scheduling and TCC operation.