Sensor-Ambient Air Temperature: Description
WARNING: This page is about a different car, the 2005 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
The ambient temperature sensor is a variable resistor mounted to a bracket that is secured with a screw to the right side of the radiator yoke, behind the radiator grille and in front of the engine compartment.
For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS article. The ambient temperature sensor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.