Low Temperature Protection Control
WARNING: This page is about a different car, the 2003 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.
Auto amplifier will turn the compressor "ON" or "OFF" as determined by a signal detected by ambient sensor.
When ambient temperatures are greater than -2°C (28°F), the compressor turns "ON". The compressor turns "OFF" when ambient temperatures are less than -5°C (23°F).