DTCP0070-00: Ambient Air Temperature Sensor Circuit: General Description

The Ambient air Temperature Sensor (ATS) senses the ambient temperature. PCM receives the intake air temperature and ambient air temperature at the same time to precisely control the intake air quantity supplied through the turbocharger. The electrical resistance of the thermistor decreases as the temperature increases, and vice versa. This sensor has a Negative Temperature Coefficient (NTC) and its resistance is in inverse proportion to the temperature.