Volkswagen Golf / Golf GTI / Jetta. Manual — part 195

24-34

To prevent injuries to persons and/or damage to

the fuel injection and ignition system, the
following must be noted:

WARNING!

Fuel system is under pressure! Before
opening the system place a cloth around the
connection. Then release pressure by
carefully loosening the connection.

Do not touch or disconnect ignition coils when

the engine is running or being turned at starter
speed.

The ignition must be switched off before

connecting or disconnecting injection or ignition
system wiring or tester cables.

Observe following if test and measuring

instruments are required during a road test:

Test and measuring instruments must be

secured to rear seat and operated by a 2nd
person from this location.

WARNING!

If test and measuring instruments are
operated from front passenger's seat and the
vehicle is involved in an accident, there is a
possibility that the person sitting in this seat
may receive serious injuries when the airbag
is triggered.

Fuel injection system, servicing

24-35

If the engine is to be turned at starter speed,

without starting:

Note:

Removing fuse 29 interrupts the voltage supply to
the fuel injectors.

- Remove fuse 29 (fuel pump) from fuse holder.

- Remove engine cover.

Note:

Mark connector and component before
disconnecting.

- Disconnect connectors from ignition coils 1

through 6.

Fuel injection system, servicing

24-36

Rules for cleanliness

When working on the fuel supply/fuel injection

system, pay careful attention to the following 5
Rules of Cleanliness:

Thoroughly clean all unions and the adjacent

areas before disconnecting.

Place parts that have been removed on a clean

surface and cover. Do not use fluffy cloths!

Carefully cover opened components or seal, if

the repair cannot be carried out immediately.

Only install clean components: Only unpack

replacement parts immediately prior to
installation. Do not use parts that have been
stored loose (e.g. in tool boxes etc.).

When the system is open: Do not work with

compressed air if this can be avoided. Do not
move vehicle unless absolutely necessary.

Fuel injection system, servicing

24-37

Engine code

BDF

Idling check

idle speed

1)

rpm

640 TO 720

2)

Motronic Engine Control Module (ECM) -J220-

3)

System designation

Motronic ME7.1.1

Part number

Parts catalog

Governed speed

rpm from approx. 6500

1)

idle speed check

Page 24-125

2)

Not adjustable

3)

Replacing Motronic Engine Control Module (ECM) -J220-

Page 24-162

Fuel injection system, servicing