Ambient Temperature Sensor: Description
WARNING: This page is about a different car, the 2005 Dodge SX, 2005 Dodge SRT-4, and 2005 Dodge Neon. However, it is still accessible from the selected car via links, so may be relevant.
Ambient air temperature is monitored by the Compass Temperature Mirror through a PCI databus message from the NGC engine controller. The ambient temperature sensor is the source for the NGC engine controller. The sensor is a variable resistor mounted in front the radiator, behind the grille, near the left lower side of the radiator support assembly. See Fig 1.
For complete circuit diagrams, refer to the appropriate wiring information in ELECTRICAL. The ambient temperature sensor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.