Volkswagen Golf / Golf GTI / Jetta. Manual — part 211

24-98

Fuel Pump (FP) Relay -J17- must be OK.,

checking:

Electrical Wiring Diagrams, Troubleshooting &

Component Locations

Checking activation

- First check activation of fuel injectors via Output

Diagnosis Test Mode (DTM)

Page 01-100

.

If activation is OK:

- Remove intake manifold:

Repair Manual, 2.8 Liter VR6 4V Engine

Mechanical, Engine Code(s): BDF; Repair Group
15

Note:

Seal the intake ports in the intake manifold or in

the cylinder head with a clean cloth.

- Pull connector off all fuel injectors.

Components, checking

24-99

Checking resistance of fuel
injectors

Note:

The resistance value is valid when
measured at approx. 20 C. The
resistance value increases at higher
temperatures.

If the specification is not obtained:

Observe the following when
installing fuel injectors:

- Check resistance of fuel injectors

between terminals.

Specification: 13.0 to 19.0

- Replace faulty fuel injector

Page 24-27

, item 7 .

Replace O-rings on all fuel

injectors and moisten them lightly
with clean engine oil.

Insert fuel injectors vertically and

in the correct position into the
fuel rail and secure with retaining
clips.

Set fuel rail with secured fuel

injectors on cylinder head and
press in evenly.

The connectors must audibly

engage in the fuel injectors when
pushed on.

Components, checking

24-100

- Check DTC memory, repair malfunctions if

necessary and then erase DTC memory

01-23

.

- Erase learned values and adapt Motronic

Engine Control Module (ECM) -J220- again

Page 24-182

.

- Read readiness code

Page 01-146

. If DTC

memory has been erased or Motronic Engine
Control Module (ECM) -J220- was disconnected
from battery positive (B+), readiness code must
be generated again

Page 01-149

.

Checking voltage supply

If the LED does not light up:

- Connect VAG 1527 LED test light to terminal 1

and Ground (GND) of relevant fuel injector
connector using adapter cables from VAG 1594.

- Operate starter and check voltage supply for the

fuel injector.

LED must light up

- Switch off ignition.

- Check wire for open circuit between 2-pin

connector terminal 1 and Fuel Pump (FP) Relay
-J17- referring to Electrical Wiring Diagrams.

Wire resistance: max. 1.5

Components, checking

24-101

Checking activation and voltage
supply

The LED does not flicker:

Repair Manual, Electrical

Equipment; Repair Group 92

- Connect VAG 1527 LED test light

to connector terminals of fuel
injector to be tested using cables
from VAG 1594.

- Operate starter and check

activation for fuel injector.

LED must flicker

- Switch off ignition.

- Remove wiper arms and cowl

panel:

- Connect VAG 1598/31 test box to

control module wiring harness.
Engine Control Module (ECM) -
J220- remains disconnected.

Components, checking