A4 Quattro Sedan L4-1.8L Turbo (AWM) (2001)
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Low Pressure Sensor / Switch: Description and Operation
Refrigerant System (R-134a), Components
A/C Refrigerant Low Pressure Switch -F73-
Function
Switches A/C Clutch -N25- OFF if system suction pressure is too low (low refrigerant charge). This switch protects the compressor if the refrigerant
system is empty.
