A4 Sedan L4-1.8L Turbo (AEB) (1997)
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High Pressure Sensor / Switch: Description and Operation
Refrigerant System (R-134a), Components
A/C Refrigerant High Pressure Switch -F23- and A/C Clutch Switch -F118-
NOTE: Beginning with m.y. 1997, A/C pressure switch -F129- replaces pressure switches -F23-, and -F118-.
Both switches are incorporated into a single housing.
F23 function
-
Switches coolant fan (V7) to second speed when A/C system pressure increases.
F118 function
-
Switches A/C clutch -N25- OFF if system pressure is too high.
