Ambient Temperature Sensor / Switch HVAC: Service and Repair

Inspection

1. Turn the ignition switch OFF.
2. Disconnect ambient temperature sensor.
3. Check the resistance of ambient temperature sensor between terminal "+" and "-" whether it is changed by changing of the ambient temperature.




Specification





4. If the measured resistance is not within specification, substitute with a known-good ambient temperature sensor and check for proper operation.
5. Replace the ambient temperature sensor if it is proved that there is a problem with the sensor.

Replacement

1. Disconnect the negative (-) battery terminal.
2. Remove the engine room RH side under cover.

3. Disconnect the ambient temperature sensor connector (A).




4. Remove the ambient temperature sensor (A).




5. Install in the reverse order of removal.