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 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.