High/Low Pressure Cut-Out Switch

High/low pressure cut-out switch is a dual-pressure switch located forward of left front strut tower, on liquid line. Switch contains 2 sets of contacts. PCM disengages A/C compressor clutch if either set of contacts open.

PCM will de-energize A/C control relay when discharge pressure is greater than 380-401 psi (26.7-28.2 kg/cm² ) and energize A/C control relay when discharge pressure is 200-251 psi (14.1-17.6 kg/cm² ) or less. PCM will energize cooling fan relay for 180 seconds after A/C control relay is de-energized because of pressure switch activation. PCM will de-energize A/C control relay if discharge pressure is less than 40 psi (2.8 kg/cm² ).