Ambient Temperature Sensor / Switch HVAC: Service and Repair

Inspection

1. Turn the ignition switch OFF.
2. Disconnect the ambient temperature sensor.
3. Check the resistance of the 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. If the problem is corrected, replace the ambient temperature sensor.

Replacement

1. Disconnect the negative (-) battery terminal.
2. Remove the front bumper cover.

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




4. Remove the ambient temperature sensor (B).
5. Install in the reverse order of removal.