Humidity Sensor: Testing and Inspection

Humidity/In-Car Temperature Sensor Test

Test

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

1. Humidity Sensor - Test





NOTE: The climate control unit receives humidity (%) data via digital transmission.

1. Turn the ignition switch to LOCK (0).

2. Press and hold both the AUTO (A) and RECIRCULATION (B) buttons, then start the engine.

3. After the engine starts, release both buttons. The climate control unit will flash the sensor number and then the value for that sensor.

4. Press the REAR WINDOW DEFOGGER button (C) until the humidity "C" is displayed. For details about the displayed content.

5. If the value is far from the actual humidity, replace the humidity/in-car temperature sensor.

2. In-Car Temperature Sensor - Test





NOTE: The climate control unit receives in-car temperature (°C) data via digital transmission.

1. Turn the ignition switch to LOCK (0).

2. Press and hold both the AUTO (A) and RECIRCULATION (B) buttons, then start the engine.

3. After the engine starts, release both buttons. The climate control unit will flash the sensor number and then the value for that sensor.

4. Press the REAR WINDOW DEFOGGER button (C) until the in-car temperature "2" is displayed. For details about the displayed content.

5. If the value is far from the actual in-car temperature, replace the humidity/in-car temperature sensor.