Volkswagen Golf Quiz
Fuel supply system - Petrol engines

Connection diagram - activated charcoal filter

In this manual: Fuel supply system - Petrol engines
General body repairs, exterior — 230General body repairs, interior — 279General information, paint — 133Vechile- specific paint information — 27Heating, air conditioning — 156Auxiliary heater — 58Air conditioning system with refrigerant R134a — 1297- speed dual clutch gearbox 0CW — 544- cylinder injection engine(1.4 1 direct inction. turbocharger) — 182Fuel supply system - Petrol engines — 59Running gear, axles, steering — 221Brake system — 92Wheels and Tyres guide — 12Guide for using trailers — 11Wheels and Tyres Guide - General Information — 121Brake system (hybrid) — 73Electrical system — 326Communication — 65Electrical system, general information — 111
~1min read
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

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A quick Volkswagen Golf quiz: every answer comes with an explanation and a link to the manual page.