System Description
WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
A/C auto amp. controls A/C compressor operation by ambient temperature and signal from ECM.
Low Temperature Protection Control
A/C auto amp. will turn the A/C compressor ON or OFF as determined by a signal detected by ambient sensor.
When ambient temperature is greater than 4°C (39°F), the A/C compressor turns ON. The A/C compressor turns OFF when ambient temperature is less than 2.5°C (37°F).