Ambient Air Temperature (AAT) Sensor
The Ambient Air Temperature (AAT) sensor is an input to the PCM. If the temperature is below approximately 0 deg. C (32 deg. F), the PCM does not allow the A/C compressor clutch to engage.
The Ambient Air Temperature (AAT) sensor is an input to the PCM. If the temperature is below approximately 0 deg. C (32 deg. F), the PCM does not allow the A/C compressor clutch to engage.