Sable V6-3.0L DOHC VIN S (2002)
Low Pressure Sensor / Switch: Description and Operation
The low charge protection switch is used to prevent A/C compressor damage in the event of a low refrigerant charge.
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The electrical switch contacts open when the suction pressure drops below normal levels. The contacts close when the suction pressure rises.For
information regarding operating pressure(s) specifications, refer to Specifications.
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When the low charge protection switch contacts open, the A/C clutch field coil is de-energized and compressor operation stops.
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The low charge protection switch is mounted on a Schrader valve-type fitting on the top of the suction accumulator/drier.
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A valve depressor, located inside the threaded end of the low charge protection switch, presses in on the Schrader valve stem, allowing the suction
pressure inside the suction accumulator/drier to control the operation of the low charge protection switch.
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It is not necessary to discharge the refrigerant system to remove the low charge protection switch.
