Jetta Sedan L5-2.5L (BGP) (2005)
High Pressure Sensor / Switch: Description and Operation
High Pressure Sensor G65
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.