Refrigerant Pressure Sensor: Description

The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent to ECM, and ECM controls cooling fan system.

Fig 1: Refrigerant Pressure Sensor Output Voltage Versus Refrigerant Pressure Graph

Courtesy of NISSAN NORTH AMERICA, INC.