Volkswagen Golf / Golf GTI / Jetta. Manual — part 76

20-27

VAG 1332

Torque
wrench
(40...200
Nm)

VAG

1348/3A
Remote
control
with
adapter
cable VAG
1348/3-2

VAG 1466

A Test
system

VAG 1527

B Diode
test lamp

VAG 1594

A Adapter
set

VAG 1715

Multimeter

Measuring

container

Wiring

diagram

Components of fuel supply system, servicing

20-28

Test conditions

Note:

See functional description of crash
fuel shut-off

Page 20-25

.

Checking function and voltage
supply

Fuse 28 must be OK.

Battery voltage must be at least

11.5 V.

All electrical consumers, e.g.

lights and rear window defroster
must be switched off.

If the vehicle is equipped with air

conditioning, this must be
switched off.

Selector lever must be in

position "P" or "N" on vehicles
with an automatic transmission.

- Fold rear seat bench forward.

- Remove cover from fuel delivery

unit.

- Briefly operate starter.

Fuel pump must audibly run.

- Switch ignition off.

Components of fuel supply system, servicing

20-29

If the fuel pump does not run:

- Remove cover in front of fuse

holder.

Fuel pump runs:

Electrical Wiring Diagrams,

Troubleshooting & Component
Locations

Fuel pump does not run:

- Pull fuse No. 28 (for fuel pump)

out of fuse holder.

- Connect remote control VAG

1348/3A to contact 28a to fuel
pump and battery positive (+)
using adapter cable VAG 1348/3-
2.

- Operate remote control.

- Check activation of Fuel Pump

(FP) relay -J17- with VA. 1466 A
referring to wiring diagram:

- Remove 4-pin connector from

flange (arrow).

Components of fuel supply system, servicing

20-30

LED does not light-up:

Electrical Wiring Diagrams,

Troubleshooting & Component
Locations

- Connect diode test lamp VAG

1527 B to outer contacts of
connector using adapter cables
from VAG 1594 A.

- Operate remote control.

LED must light up

- Locate and eliminate open circuit

referring to wiring diagram:

LED lights up (voltage supply

OK):

If no open circuit can be found:

- Remove union nut with spanner

3217.

- Check that electrical wires

between flange and fuel pump are
connected.

- Fuel pump faulty, replace fuel

delivery unit

Page 20-15

,

Removing and installing fuel
delivery unit.

Components of fuel supply system, servicing