Ambient Temperature Sensor / Switch HVAC: Description and Operation

AMBIENT AIR TEMPERATURE SENSOR




1. The air temperature sensor located at the front of the engine radiator, detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperatures, and decrease with higher temperatures.
2. The sensor output will be used for discharge temperature sensor, sensor fail-safe, temperature regulation door control, blower motor level control, mix mode control and in-car humidity control.