VW Golf manuals

Volkswagen Golf Service & Repair Manual: Connection diagram - activated charcoal filter

  Note
Fuel tank leak detection takes advantage of the fact that a vacuum develops naturally in the fuel system as the fuel in the tank cools. The variables temperature and pressure are necessary for fuel tank leak detection. The temperature sensor is integrated into the control unit for fuel tank leak detection -J909-. The tank pressure sensor -G400- is fitted in the pressure control valve. The system is deemed leak-free if 2.5 mbar vacuum is measured as the tank temperature drops. If no vacuum develops, there is a leak in the fuel system, and an entry will be made in the event memory of the engine control unit.
   

Connection diagram - activated charcoal filter

1 -  Activated charcoal filter
Fitting location: In rear right wheel housing beneath liner
Removing and installing → Chapter.
2 -  Air filter
3 -  Pressure regulating valve
With tank pressure sensor -G400-
4 -  Breather line
From activated charcoal filter to engine
5 -  Cap
The gasket must not be dirty or damaged
6 -  Control unit for fuel tank leak detection -J909-
With temperature sensor
7 -  Fuel supply line
Black
8 -  Breather line
White
9 -  Activated charcoal filter solenoid valve 1 -N80-
Checking → Vehicle diagnostic tester
Activated charcoal filter with fuel tank leak detection
...

Assembly overview - activated charcoal filter system
1 -  Connecting hose From air filter to pressure control valve 2 -  Hose clips 3 -  Pressure regulating v ...

Other materials:

Removing and installing front turn signal bulb -M5-/-M7- (gas discharge headlights)
  Note Removal and installation are described for the left side. Removal and installation on the right side are carried out in the same way. If the left turn signal bulb on vehicles with TDI engine cannot be remo ...

Repairs to contacts in contact housings
If necessary, first open or disengage the secondary locking mechanism of the contact housing → Chapter.     –  Disengage the contact (primary locking mechanism) using the approp ...

Subsequent bleeding of hydraulic system
  Note Carry out subsequent bleeding when: brake pedal travel is too long or so-called »soft brake pedal« Subsequent bleeding requires the assistance of a second mechanic. –&n ...

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