Air Conditioning (A/C) Pressure Sensor

The A/C pressure sensor is located in the high pressure (discharge) side of the A/C system. The A/C pressure sensor provides a voltage signal to the PCM that is proportional to the A/C pressure. The PCM uses this information for A/C clutch control, fan control and idle speed control.

Fig 1: A/C Pressure Sensor Output Voltage VS Pressure Chart

Courtesy of FORD MOTOR CO.

Fig 2: Typical A/C Pressure Sensor

Courtesy of FORD MOTOR CO.