Savana 1/2 Ton Van V8-5.7L VIN R (2001)
Refrigerant Pressure Sensor / Switch: Description and Operation
A/C PRESSURE SWITCHES
The A/C system is protected by two pressure switches. The A/C high pressure switch interrupts the A/C request signal when the A/C line pressure
exceeds a predetermined value. The A/C low pressure switch interrupts the A/C low pressure switch signal when the A/C line pressure drops below a
predetermined value. When the PCM stops receiving the required signals, the A/C compressor clutch relay control circuit is no longer grounded, thus
shutting off the compressor.
