Refrigerant Pressure Sensor
WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
The refrigerant pressure sensor is installed at the liquid tank of the air conditioner system. The sensor uses an electrostatic volume pressure transducer to convert refrigerant pressure to voltage. VCM calculates refrigerant pressure based on the voltage and sends a refrigerant pressure signal to the A/C amp. Furthermore, VCM uses the voltage signal to the cooling fan control.