In-car Temperature Sensor Test

RHD type: .

1.Remove the in-car temperature sensor.

2.Check for a change in resistance by heating the sensor with a hair dryer or cooling the sensor in a cool cup of water.

3.Compare the resistance reading between the No. 1 and No. 2 terminals of the in-car temperature sensor with the specifications shown in the graph; the resistance should be within the specifications.


4.If the resistance is not as specified, replace the in-car temperature sensor.

Incorrectly applying power and ground to the in-car temperature sensor will damage it. Follow the instructions carefully.

5.Connect battery power to the No. 4 terminal of the in-car temperature sensor, and ground the No. 3 terminal; the aspirator fan should run.

6.If the aspirator fan did not run in 5, replace it.