Air Outlet Temperature Sensor: Description
WARNING: This page is about a different car, the 2004 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.
The air outlet temperature sensor is a two-wire temperature sensing element that detects the temperature of the air coming out of the heater housing unit. The sensor is attached to heater housing unit directly behind the ATC heater-A/C control panel. The thermistor will change resistance as the temperature changes.