S4 V8-4.2L (BHF) (2004)
Low Pressure Sensor / Switch: Description and Operation
Refrigerant Circuit Switches And Sensors And Related Connections
NOTE: Refer to vehicle-specific refrigerant circuit for switching pressures, switch removal/installation and switch layout/design Heating, air
conditioning or Air conditioning.
A/C Refrigerant Low Pressure Switch F73
Function: Switches off compressor in the event of pressure drop in the refrigerant circuit (approx. 2 bar).