Cabin Temperature Sensor / Switch: Description and Operation
IN-CAR TEMPERATURE SENSORIn-Car Temperature Sensor:
The in-car temperature sensor measures the actual air temperature within the passenger compartment. The in-car temperature sensor is located inside of the A/C-heater control behind a vented panel and is not a separate serviceable component. The A/C-heater control must be replaced if there is a fault relating to the in-car temperature sensor.
Air from the passenger compartment flows over the thermistor of the in-car temperature sensor. The thermistor changes resistance with air temperature. The ATC control module measures this resistance and calculates the temperature of the air. The ATC control module then makes adjustments to maintain the selected passenger compartment temperature.