A6 Quattro Sedan V6-2.8L (AFC) (1995)
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High Pressure Sensor / Switch: Service and Repair
Function
Switches A/C clutch OFF if system pressure is too high.
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Switch identification: red housing with bonded wire connections.
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Switch located on left side of condenser.
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Switch opens (compressor OFF): 28.2-31.0 bar (409-450 psi).
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Switch closes (compressor ON): 10.3-17.2 bar (149-250 psi).
Removing And Installing
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Remove electrical connector and unscrew high pressure switch -F118-. Refrigerant system remains closed (Schrader valve under switch).
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Install new O-ring -A- (7.6 mm x 1.8 mm), lubricate with refrigerant (PAG) oil and ensure proper seating in groove.
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Torque switch to 5 Nm (44 in lb).
