90 Quattro 20V (Canada) L5-2309cc 2.3L DOHC (7A) (1989)
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High Pressure Sensor / Switch: Description and Operation
A/C Refrigerant High Pressure Switch (-F23-)
A/C Refrigerant High Pressure Switch (5 Cylinder)
The A/C Refrigerant High Pressure Switch (-F23-) turns the radiator cooling fan 2nd stage operation on when refrigerant pressure reaches specified
value. Activation time varies by ambient temperature and engine RPM.
NOTE: This switch can be removed without discharging the refrigerant system.
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Switch has yellow housing or green housing with welded wiring connections.
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Maximum 17.5 bar on high pressure side to activate.
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Closes: 13.1 bar - 17.5 bar (189.9 psi - 253.7 psi).
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Opens: 10.6 bar - 15.0 bar (153.7 psi - 217.5 psi).
