Escalade V8-5.7L VIN R (2000)
High Pressure Sensor / Switch: Description and Operation
The system also has a high pressure cutoff switch. This switch is normally closed. The switch opens at 2827-3103 kPa (410-50 psi) in order to interrupt
the voltage to the compressor coil. This stops the compressor from cycling, and prevents the pressure relief valve from discharging refrigerant and oil.
