In-Vehicle Temperature Sensor - Expedition

The in-vehicle temperature sensor contains a thermistor, which measures the in-vehicle air temperature and sends that reading to the EATC module. An aspirator hose and elbow is connected between the heater core and evaporator core housing and the in-vehicle temperature sensor. The aspirator hose uses airflow through the heater core and evaporator core housing to create a venturi-type suction to draw in-vehicle air through the in-vehicle temperature sensor and across the thermistor.