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Home >> Audi >> 1994 >> 100CS Quattro Sedan V6-2.8L (AAH) >> Repair and Diagnosis >> Heating and Air Conditioning >> Refrigerant Pressure Sensor / Switch >> Service and Repair
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Refrigerant Pressure Sensor / Switch: Service and Repair

Function
Switches coolant fan -V7- to 2nd speed operation.
- Switch identification: green housing with bonded wire connections
- Switch located on left side of condenser
- Switch closes (2nd speed ON): 1.42 - 17.4 bar (206 - 252 psi)
- Switch opens (2nd speed OFF): 11.7 - 15.0 bar (170 - 218 psi)

Removing and installing



- Remove electrical connector and unscrew high pressure switch -F23-.
Refrigerant system remains closed (Schrader valve under switch)
- Install new O-ring -A- (7.6 mm x 1.8 mm), lubricate with refrigerant (PAG) oil and ensure proper seating in groove.
- Torque switch to 5 Nm (44 in lb).
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