Refrigerant Pressure Sensor / Switch: Description and Operation
A/C PRESSURE TRANSDUCERDESCRIPTION
A/C pressure transducer convert the pressure value of high pressure line into voltage value after measure it. By converted voltage value, engine ECU controls cooling fan by operating it high speed or low speed. Engine ECU stop the operation of compressor when the temperature of refrigerant line is so high or so low irregularly to optimize air conditioning system.