Refrigerant Pressure Sensor: Description

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. The voltage signal is sent to ECM, and ECM controls cooling fan system.

Fig 1: Identifying Refrigerant Pressure Sensor Harness Connector

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Refrigerant Pressure Sensor Output Voltage Versus Refrigerant Pressure Graph

Courtesy of NISSAN MOTOR CO., U.S.A.