Ambient Temperature Sensor / Switch HVAC: Testing and Inspection

Inspection

1. Turn the ignition switch OFF.
2. Disconnect ambient temperature sensor.
3. Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing 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.