In-Vehicle Temperature Sensor
WARNING: This page is about a different car, the 1998 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Sensor is located behind center of dash, right of steering column. Sensor has dedicated air hose to draw in-vehicle air past to accurately maintain temperature. Sensor resistance decreases as in-vehicle air temperature increases, and increases as in-vehicle temperature decreases.