Humidity Sensor: Testing and Inspection

Humidity/In-Car Temperature Sensor Test

Humidity Sensor Test

NOTE: Before testing the sensor, check for climate control DTCs.

1. Remove the humidity/in-car temperature sensor Humidity/In-Car Temperature Sensor Replacement.

2. Connect the humidity/in-car temperature sensor 4P connector.

3. Turn the ignition switch to ON (II). Measure the voltage between terminals with the (+) probe on terminal No. 3 and the (-) probe on terminal No. 2 with the connector connected.









4. If the voltage is not as specified, replace the humidity/in-car temperature sensor Humidity/In-Car Temperature Sensor Replacement.

In-Car Temperature Sensor Test

NOTE: Before testing the sensor, check for climate control DTCs.

1. Remove the humidity/in-car temperature sensor Humidity/In-Car Temperature Sensor Replacement.

2. Test the humidity/in-car temperature sensor while holding it in front of the dashboard center vent.

- Measure the resistance with the system set to Max Cool.
- Measure the resistance with the system set to Max Hot.

3. Compare the resistance reading between terminals No. 1 and No. 2 of the humidity/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 humidity/in-car temperature sensor Humidity/In-Car Temperature Sensor Replacement.