Ambient Temp Sensor: Description
Ambient air temperature is monitored by the Electronic Vehicle Information Center Computer (EVIC) through ambient temperature sensor messages received from the Powertrain Control Module (PCM) over the Programmable Communications Interface (PCI) data bus network. The PCM receives a hard wired input from the ambient temperature sensor. The ambient temperature sensor is a variable resistor mounted in front the radiator, behind the grille, near the center of the vehicle. See Fig 1.
Refer to POWERTRAIN CONTROL MODULE for more information. For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS . The ambient temperature sensor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.