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Home >> Honda >> 2004 >> CR-V 4WD L4-2.4L >> Repair and Diagnosis >> Heating and Air Conditioning >> Refrigerant Pressure Sensor / Switch >> Description and Operation
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Refrigerant Pressure Sensor / Switch: Description and Operation

How the Circuit Works

The heater control unit-panel controls the blower controls, air delivery, and A/C compressor controls automatically. With the ignition switch in ON (II), battery voltage is supplied through fuse 14. The control unit-panel is grounded at G501

A/C Pressure Switch

The A/C pressure switch is located in the condenser outlet line where refrigerant is in a high temperature/high pressure liquid state. The switch will sense abnormally high or low pressure, and open the circuit. This removes ground from the ECM/PCM, and turns off the compressor.
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