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Home >> Cadillac >> 1989 >> Seville Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Automatic >> Component Functions >> Temperature Sensor Inputs >> In-Car Temperature Sensor

In-Car Temperature Sensor

This sensor is located in the instrument panel, to left of center. To provide an accurate in-car temperature a small amount of in-car air is drawn over the thermistor.

This air movement is accomplished through the use of an aspirator. Airflow from the HVAC module creates a slight vacuum at one end of the aspirator which draws in-car air into the aspirator and over the thermistor.