PT Cruiser L4-2.4L Turbo (2009)
Low Pressure Sensor / Switch: Description and Operation
A/C Low Pressure Cut Off Switch - Description
DESCRIPTION
The A/C low pressure switch (1) sends a signal to the powertrain control module (PCM) or engine control module (ECM) (depending on engine
application) to regulate the refrigerant system pressure and control A/C evaporator temperature by turning the A/C compressor clutch off and on See:
Compressor HVAC/Description and Operation/A/C Compressor - Operation.
The A/C low pressure switch is mounted on a fitting located on the top of the A/C accumulator. The fitting is equipped with an O-ring seal and
Schrader-type valve.
The A/C low pressure switch can be serviced without discharging the refrigerant system.
