AUDI A4 1999 B5 / 1.G Seatbelts Workshop Manual

69-1


Seat belts

Safety precautions for handling
pyrotechnic seat belt tensioners


WARNING!

Testing, removing, installing and repair work
must only be carried out by properly
qualified personnel.
When connecting the seat belt tensioner unit,
all mechanical components (including those
of the three-point seat belt) must be properly
attached.
Only the technician carrying out the work
may be present inside the vehicle.
The seat belt tensioner components cannot
be opened or repaired; always use new
components.
Seat belt tensioner units which have been
dropped from a height of more than 20
inches must not be installed in a vehicle.
Seat belt tensioner units which are
mechanically damaged (dents, cracks) must
always be replaced.
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The seat belt tensioner unit should not be
removed from its packaging until just before
it is to be installed.
If the installation work is interrupted, return
the seat belt tensioner unit to its packaging.
Never point the open end of a seat belt
tensioner at another person.
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69-2

WARNING!

Always wash your hands after handling seat
belt tensioners which have been triggered.
Observe all transportation regulations for
explosive substances.
Do not leave an uninstalled seat belt
tensioner unit unattended.
Seat belt tensioner units must not be treated
with grease, cleaners or similar substances.
Seat belt tensioner units must not be
exposed to temperatures above 100 C (212
F), even for short periods.
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69-3

Pyrotechnic seat belt tensioners,
disposal


WARNING!

Improper disposal of pyrotechnic seat belt
tensioner units (gas generators) which have
not been triggered creates a hazard.
Pyrotechnic seat belt tensioner units (gas
generators) must be rendered inoperable
before disposing because pyrotechnic
devices can cause injury if disposed of
improperly (e.g. using a blow torch).
Seat belts which need to be removed (e.g.
after an accident in which the seat belt
tensioner was not activated) must be
triggered before removal.
This does not apply to seat belts with
malfunctions (e.g. sticking or failure to
retract) which must be returned to the
Warranty Parts Test Center for analysis.
Observe all transportation regulations for
explosive substances.
Procedure for rear belt tensioners is
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analogous to front (shelf, remove trim on
side of trim or remove 2/3 of backrest cover).
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69-4

Procedure for triggering pyrotechnic belt
tensioners

Notes:

Whenever possible, pyrotechnic belt tensioners
must be deployed outside the vehicle. Use
Airbag and Pyrotechnic Deployment Device J-
44210 and follow instructions in booklet.
The procedure that follows is for deployment of
tensioners mounted inside a vehicle.

- Remove upper B-pillar trim page 70
-75
.

- Remove lower B-pillar trim page 70
-75
.

- Remove outer seat belt anchor page 69
-
13
.

- Using scissors, cut belt webbing above seat belt
tongue (about 20 cm above belt retractor).

- Disconnect harness connector from belt
retractor and connect wiring harness (Part No.
8D1 971 259) to belt tensioner.

-
Cut harness connector at opposite end, insulate
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both ends of cable, pull cable housing apart until
ends of cable are at least 30 cm apart.
Vehicle must not be occupied

- Open windows and close doors.

- Using wiring harness and an external battery
(located outside vehicle), activate gas generator
(maintain minimum 10 m distance).
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69-5

- Air out vehicle after triggering.

After removal, the belts can be disposed of as
commercial waste.
Wash your hands after handling belt tensioners
that have fired.
Follow safety and handling instructions for
pyrotechnic belt tensioners.
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69-6


Seat belt attachment points, overview

1 -
Three-point seat belt with seat belt height
adjuster and belt tensioner
Removing page 69
-7
2 -
Buckle attachment point
Removing page 69
-12
3 -
Attachment point for outer floor assembly
Removing page 69
-13
4 -
Left and right-rear three-point seat belt
Sedan:
Removing page 69
-15
Avant:
Removing page 69
-18
5 -
Rear center three-point seat belt
Floor rear backrestRemoving page Page 69
-22
6 -
Attachment point for center floor
assembly
Removing page 69
-25
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69-7


Three-point seat belt with seat belt height
adjuster and belt tensioner, removing and
installing

Notes:
Function check after installing trim: 1 -
Seat belt height adjuster
Removing:
- Remove upper B-pillar trim page 70
-
75
.
- Remove shouldered nut -3- and bolt -2-.
- Remove seat belt height adjuster -1- up
and out of position -A-.
Installing:
- Guide seat belt height adjuster switch -4-
into height adjuster assembly -1-.
Do not press switch -4- when installing.Height adjuster must audibly engage into
all five of the possible positions (even in
the top position). Switch must return by itself to upper
position after being actuated.
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