Volkswagen Golf / Golf GTI / Jetta. Manual — part 31

15-19

- Disconnect 6-pin connector from

throttle valve control module
(arrow).

- Open and close expansion tank

cap to release pressure in cooling
system.

- Pull coolant hoses off throttle

valve control module and seal
hose ends.

WARNING!

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

- Pull fuel supply hose -1- (with

white marking) and fuel return
hose -2- (with blue marking) off
fuel rail and collect fuel that may
leak out with a cloth.

- Seal lines to avoid contamination

of fuel system.

- Observe rules for cleanliness

Page 20-14

.

Cylinder head, servicing

15-20

- Remove retaining frame on

cylinder head for fuel lines and
wiring harness (arrows).

Note:

Press buttons on hose couplings to
do so.

- Disconnect vacuum hoses

(arrows) from intake manifold.

- Remove rearmost bolt -1- for

intake manifold support.

- Unclip pressure hose (between

combi-valve and secondary air
pump motor) and all other lines
from retainers on intake manifold
and cylinder head cover.

- Remove guide on cover for

coolant hoses and wiring harness

Page 15-11

, item - 1 -.

Cylinder head, servicing

15-21

- Remove Ground connection on support of

combi-valve

Page 26-25

, item - 9 -.

- Disconnect vacuum hose from variable intake

manifold change-over vacuum actuator.

- Remove two lateral intake manifold support

bolts.

- Remove center, left and right insulation trays:

Repair Manual, Body Exterior, Repair Group

50

- Disconnect connectors from thermal switch and

coolant fan.

- Removing front bumper:

Repair Manual, Body Exterior, Repair Group

63

- Bring lock carrier into service position:

Repair Manual, Body Exterior, Repair Group

50

- Unscrew dipstick guide tube from intake

manifold.

- Remove intake manifold securing bolts and

remove intake manifold together with throttle
valve control module.

Cylinder head, servicing

15-22

- Remove intake manifold and place on a suitable

surface so that vacuum actuator is not
damaged.

Note:

Seal the intake ports in the intake manifold or in

the cylinder head with a clean cloth.

- Remove cylinder head cover.

Installing

Install in reverse sequence ; note the following

points:

Note:

Replace cylinder head cover if damaged or

leaking.

First bolt intake manifold to cylinder head. Then

tighten both bolts of the manifold support.

Ensure tight fit of fuel hoses.

- If necessary replenish coolant

Page 19-15

.

- Check DTC memory:

Repair Manual, 2.8 Liter VR6 4V Fuel Injection

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

Cylinder head, servicing