In-Car Temperature Sensor Test

NOTE: Before testing the sensor, check for climate control DTCs (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS ).

Remove the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT ).
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.
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.

Fig 1: Measuring Resistance Reading Between Humidity/In-Car Temperature Sensor Terminals No. 1 And No. 2 With Graph
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the resistance is not as specified, replace the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT ).