Refrigerant Pressure Sensor / Switch: Description and Operation

A/C PRESSURE SENSOR
The A/C refrigerant pressure sensor is a 3-wire piezoelectric pressure transducer.operate.
The A/C pressure signal can be between 0-5 volts. When the A/C refrigerant pressure is low, the signal value is near 0 volts. When the A/C refrigerant Pressure is high, the signal value is near 5 volts.
The PCM Converts voltage signal to pressure value