In-Vehicle Temperature Sensor
WARNING: This page is about a different car, the 2009 Mercury Mountaineer, 2009 Ford Explorer Sport Trac, and 2009 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The in-vehicle temperature sensor contains a thermistor which measures the in-vehicle air temperature and sends that reading to the HVAC module. A hose and elbow is connected between the heater core and evaporator core housing and the in-vehicle temperature sensor. The automatic temperature control sensor hose and elbow takes air from the heater core and evaporator core housing air stream to create a suction in the in-vehicle temperature sensor. The suction draws in-vehicle air into the in-vehicle temperature sensor and across the thermistor.