SENSOR-AMBIENT AIR TEMPERATURE
DESCRIPTION
The ambient temperature sensor is a variable resistor type sensor. it is mounted to the lower front fascia behind the radiator grille and in front of the engine compartment.
The ambient temperature sensor cannot be adjusted or repaired and, if inoperative or damaged, it must be replaced.
OPERATION
The ambient temperature sensor is a variable resistor that operates on a five-volt reference signal sent by the Front Control Module (FCM). The resistance in the sensor changes as temperature changes, changing the temperature sensor signal circuit voltage to the FCM. Based upon the resistance in the sensor, the FCM senses a specific voltage on the temperature sensor signal circuit. The FCM then translates the voltage into a temperature reading that it sent over the Controller Area Network (CAN) data bus to other modules utilizing temperature information.
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Remove the grille, (Refer to 23 - BODY/EXTERIOR/GRILLE - REMOVAL).
3. Disconnect the wire harness connector from the ambient temperature sensor.
4. Release the ambient temperature sensor from the retaining bracket.
5. Remove the ambient temperature sensor from the vehicle.
INSTALLATION
1. Position the ambient temperature sensor in the vehicle.
2. Secure the ambient temperature sensor into the retaining bracket.
3. Connect the wire harness connector to the ambient temperature sensor.
4. Install the grille, (Refer to 23 - BODY/EXTERIOR/GRILLE - INSTALLATION).
5. Connect the battery negative cable.