Toyota
Dodge Durango
 Service Manual
Overhead Console Systems » Description and operation
Ambient temperature sensor

DESCRIPTION

Ambient air temperature is monitored by the compass mini-trip computer module through the ambient temperature sensor. 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 Overhead Console in the Contents of Group 8W - Wiring Diagrams.

The ambient temperature sensor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.

OPERATION

The ambient temperature sensor is a variable resistor that operates on a five-volt reference signal sent to it by the compass mini-trip computer module.

The resistance in the sensor changes as temperature changes, changing the temperature sensor signal circuit voltage to the compass mini-trip computer module.

Based upon the resistance in the sensor, the compass mini-trip computer module senses a specific voltage on the temperature sensor signal circuit, which it is programmed to correspond to a specific temperature.

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