Ambient 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 ambient temperature sensor is an encapsulated thermistor that provides the ATC ECU with an input of external air temperature. The sensor is attached to the cooling fan mounting bracket in front of the condenser.