Ambient Temperature Sensor / Switch HVAC: Testing and Inspection

INSPECT A/C AMBIENT TEMPERATURE SENSOR










a. Remove the A/C ambient temperature sensor.
b. Measure the resistance between terminals 1 and 2 of A/C ambient temperature sensor at each temperature, as shown in the table.

NOTE:
- Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor.
- When measuring, the sensor temperature must be almost the same as the ambient temperature.

HINT: As the temperature increases, the resistance decreases.
If the resistance value is not as specified, replace the sensor.