In-Vehicle Temperature/Humidity Sensor

The in-vehicle temperature/humidity sensor operates in the following manner:

• A thermistor in the in-vehicle temperature/humidity sensor measures air temperature inside the passenger compartment.
• A humidity transducer in the in-vehicle temperature/humidity sensor measures in-vehicle humidity.
• A hose and elbow is connected between the plenum chamber and the in-car temperature/humidity sensor.
• Airflow through the plenum chamber creates a venturi-type suction through the hose which draws passenger compartment air through the in-vehicle temperature/humidity sensor and across the thermistor and humidity transducer.