F 250 2WD Super Duty V8-5.4L (2008)
High Pressure Sensor / Switch: Description and Operation
HIGH-PRESSURE CUTOFF SWITCH
The high-pressure cutoff switch is used to interrupt A/C compressor operation in the event of excessively high discharge pressure in the high-pressure
side of the refrigerant system. The PCM monitors the contacts in the high-pressure cutoff switch (and A/C cycling switch) through the ACCS circuit.
When the ACCS circuit is open, the PCM will disengage the A/C compressor clutch.
The high-pressure cutoff switch is located on a Schrader-type valve fitting on the compressor-to-condenser discharge line. It is not necessary to recover
the refrigerant to remove the high-pressure cutoff switch.
