In-car temperature sensor
WARNING: This page is about a different car, the 2004 Land Rover Discovery, 2003 Land Rover Discovery, and 2002 Land Rover Discovery. However, it is still accessible from the selected car via links, so may be relevant.
The in-car temperature sensor is an encapsulated thermistor that provides the ATC ECU with an input of cabin air temperature. The sensor is integrated into the inlet of an electric fan, which is installed behind a grille in the fascia outboard of the steering column. The fan runs continuously, while the ignition is on, to draw air through the grille and across the sensor.