Driver Side Footwell Air Discharge Temperature Sensor
WARNING: This page is about a different car, the 2017 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
The driver side footwell air discharge temperature sensor is an input to the FCIM. The driver side footwell air discharge temperature sensor contains a thermistor. The sensor varies its resistance with the temperature. As the temperature rises, the resistance falls. As the temperature falls, the resistance rises. The FCIM uses the sensor information to maintain the desired temperature of the passenger cabin air.