Cabin Temperature Sensor / Switch: Description and Operation

In Car Temperature Sensor





An intake grille (mounted on the fascia, outboard of the steering column and below the EOD vent) houses the aspirator thermistor. The remotely mounted motor/fan assembly draws cabin air through the grille and thus over the thermistor; a flexible hose connects both components.

The electrical resistance of the thermistor changes in response to variations in air temperature, this change being converted into an electrical signal. The A/CCM uses this signal to adjust the temperature, airflow and air distribution from the air conditioning unit.