Volkswagen Golf / Golf GTI / Jetta. Manual — part 50

15-89

- Release brake and accelerator pedals.

If "Sys. OK." appears in display zone 3:

- Press

key.

- Press keys 0 and 6 for function "End output" and

confirm entry with Q key.

- Switch ignition off.

If "Syst.n.OK." appears in display zone 3:

- Press

key.

- Check DTC memory:

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

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

- 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

Valve gear, servicing

15-90

If no DTC is stored in DTC memory:

- Press keys 0 and 6 for function "End output" and

confirm entry with Q key.

- Switch ignition off.

- Check Camshaft Position (CMP) sensors -G40-

and -G163- (connections may be interchanged):

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

& Ignition, Engine Code(s): BDF, Repair Group
28

- Check oil pressure

Page 17-19

, Checking oil

pressure and oil pressure switch.

- Check valve timing

Page 15-37

.

When no faults can be located:

- Replace exhaust camshaft timing adjuster

Page 15-69

, Removing and installing camshaft

Valve gear, servicing

15-91

Valve guides, checking

Special tools and equipment

Test sequence

VW 387 Universal dial gauge

bracket

Dial gauge

Note:

The end of the valve stem must be
flush with the guide. Due to the slight
difference in stem diameters, ensure
that only an intake valve is used in
the intake guide and an exhaust
valve in the exhaust guide.

If rock tolerance is exceeded:

- Insert a new valve into guide.

- Determine rock.

Wear limit: 0.8 mm

- Replace cylinder head.

Valve gear, servicing

15-92

Valve stem
seals,
replacing

(with cylinder
head
installed)

Special tools
and
equipment

VW

541/1A
Assembly
lever with
press
piece VW
541/6

2036

Assembly
tool with
adapter
plate
2036/1

3122 B

Spark plug
wrench

3364

Puller

3365

Installation
tool

T40012

Adapter

Valve gear, servicing