Passat Sedan 4Motion W8-4.0L (BDP) (2002)
High Pressure Sensor / Switch: Description and Operation
High Pressure Sensor G65, Refrigerant Circuit And Connections
Switches And Sensors On Refrigerant Circuit And Corresponding Connections
NOTE: Switch pressures, removing and installing switches as well as switch arrangement and version, refer to vehicle specific refrigerant circuit.
High Pressure Sensor G65
This High Pressure Sensor G65 is installed instead of A/C Pressure Switch F129.
When a voltage is applied, the high pressure sensor generates a square wave signal or a data telegram. This signal changes along with pressure in the
system.
The downstream control modules (Coolant Fan Control (FC) Control Module, Engine Control Module (ECM), A/C Control Head E87 or Climatronic
Control Module J255, etc.) use this signal to calculate pressure in the refrigerant circuit and accordingly to activate coolant fans and motor, A/C Clutch
N25 or to change activation of A/C Compressor Regulator Valve N280.