Volkswagen Golf / Golf GTI / Jetta. Manual — part 75

20-23

Note:

Press buttons on hose couplings to
do so.

WARNING!

Fuel supply lines are under
pressure! Before removing from
hose connections wrap a cloth
around the connection. Then
release pressure by carefully
pulling hose off connection.

Installing

Install in reverse sequence ; note the
following points:

- Disconnect return line -2- (blue),

supply line -1- (black) and
breather line -3- (white) at
connecting point.

- Seal lines to avoid contamination

of fuel system.

- Remove tensioning strap. When

doing this support fuel tank with
engine/transmission jack VAG
1383 A.

- Lower fuel tank.

Route breather and fuel hoses

kink free.

Ensure tight fit of fuel hoses.

Do not interchange supply and

return hose (return hose blue or
blue markings, supply hose
black).

Components of fuel supply system, servicing

20-24

Note:

After installing fuel gauge sender, check that the

supply, return and breather pipes are still clipped
onto the fuel tank.

- Check DTC memory:

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

& Ignition, Engine Code(s): BDF, Repair Group
01

- Adapt (match) engine control module to throttle

valve control module:

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

& Ignition, Engine Code(s): BDF, Repair Group
24

- Perform work sequence "Procedure after

interrupting voltage supply":

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

& Ignition, Engine Code(s): BDF, Repair Group
24

- Read readiness code:

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

& Ignition, Engine Code(s): BDF, Repair Group
01

- Generate readiness code again if DTC memory

has been erased or engine control module
separated from permanent positive supply:

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

& Ignition, Engine Code(s): BDF, Repair Group
01

Components of fuel supply system, servicing

20-25

Crash fuel shut-off

Function

Models with an airbag are installed with a crash

fuel shut-off system. It reduces the danger of a
fire in a crash as the fuel pump is switched off via
the fuel pump relay.

At the same time this system improves starting of

the engine. When the door is opened the fuel
pump is activated for 2 seconds to build up the
pressure in the fuel system.

When opening the fuel system:

Observe safety precautions

Page 20-12

.

- Check activation of Fuel Pump (FP) relay -J17-

with VAG 1466 A referring to wiring diagram:

Electrical Wiring Diagrams, Troubleshooting &

Component Locations

Components of fuel supply system, servicing

20-26

Fuel pump,
checking

Special tools
and
equipment

3217

Union nut
spanner

VAG 1318

Pressure
gauge

VAG

1318/11
Adapter

VAG

1318/16
Hose
adapter

VAG

1318/17
Adapter

VAG

1318/23
Adapter

Components of fuel supply system, servicing