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Outside Air Temperature Sensor - G17-, CHECKING: Function

The ambient or Outside Air Temperature Sensor -G17- is a negative temperature coefficient (NTC) sensor that informs the semiautomatic / automatic temperature control system of outside air temperature. An NTC sensor's resistance decreases as the temperature increases. The computer uses this input along with different in-car temperature sensors to control temperature and blower speed. When there is a problem with this sensor, performance will suffer and the compressor's clutch may not engage.

The Outside Air Temperature Sensor -G17- is also known as the Ambient Air Temperature Sensor (AAT).

Special tools and workshop equipment required 

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