Ambient Temperature Sensor / Switch HVAC: Testing and Inspection

AMBIENT TEMPERATURE SENSOR

ON-VEHICLE INSPECTION

1. INSPECT AMBIENT TEMPERATURE SENSOR




a. Disconnect the A6 ambient temperature sensor connector.




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

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 (see the graph). If the resistance value is not as specified, replace the sensor.