Evaporator Temperature Sensor
WARNING: This page is about a different car, the 2016 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The evaporator temperature sensor is available only as part of the heater core and evaporator core housing.
The evaporator temperature sensor is an input to the HVAC control module based on the evaporator fin temperature.