Caravan AWD V6-201 3.3L (1991)
Low Pressure Sensor / Switch: Description and Operation
The Low Pressure Cut-Off (LPCO) Switch monitors the refrigerant gas pressure on the suction side of the system. The LPCO is located on the expansion
valve, and the expansion valve is silver in color when a fixed displacement compressor is used. The LPCO turns off voltage to the compressor clutch coil
when refrigerant gas pressure drops to levels that could damage the compressor. The LPCO is a sealed factory calibrated unit. It must be replaced if
defective.
