Humidity/In-Car Temperature Sensor Removal, Installation, and Test: Test

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Honda Odyssey, 2024 Honda Odyssey, 2023 Honda Odyssey, 2022 Honda Odyssey, and 2021 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

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

Humidity Sensor

Humidity Sensor - Test

Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.

1. Connect the humidity/in-car temperature sensor connector.

2. Turn the vehicle to the ON mode.

3. 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.

In-Car Temperature Sensor

In-Car Temperature Sensor - Test

Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.

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

Measure the resistance with the system set to MAX COOL (Lo).
Measure the resistance with the system set to MAX HOT (Hi).

2. Compare the resistance readings with the specifications shown in the graph, the resistance should be within the specifications.

3. If the resistance is not as specified, replace the humidity/in-car temperature sensor.