torque AUDI A4 1999 B5 / 1.G Airbag Service Workshop Manual

69-53

Driver-side airbag unit ( m.y. 1998),
removing and installing


- Disconnect battery Ground (GND) strap.

Note:
Always follow airbag safety precautions when
working on airbag system components ( page
69
-40
).

-
Using T30 Torx bit, unbolt airbag unit on both left and right side of
steering wheel. Tightening torque: 6 Nm (53 in. lb)
- Carefully pull back airbag unit.
- Disconnect harness connector from airbag unit.

WARNING!
No one may be in vehicle when connecting battery Ground (GND)
strap. - Place airbag unit on suitable surface with impact padding facing up.
- When installing, make sure harness connector audibly engages
(clicks).
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69-67


Sport steering wheel spiral spring ( m.y.
1998), removing and installing

Notes:
Wheels must be facing straight ahead.
Before removing spiral spring, remove airbag
unit and steering wheel.
- Remove bolts -1- (3x).
- Tightening torque: 5 Nm (44 in. lb)
- Remove carrier unit. Disconnect harness
connectors.
- Remove bolts -5- (3x).
- Tightening torque: 5 Nm (44 in. lb)
- Remove lower part of carrier unit. Disconnect
harness connectors.
- Remove bolts securing spiral spring.
- Pull spiral spring downward and remove. Do not
rotate spiral spring while it is removed.
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69-68

Spiral spring, removing and installing


Driver-side airbag unit and steering wheel
removed

- Pull steering column all the way out and down.

- Remove bolt -1- (2x).
Tightening torque: 2.8 Nm (25 in. lb)
- Remove handle -2-.

To install, insert upper shell into retaining tab in lower shell, swing down
and install screws. - Remove two Phillips-head screws (arrows).
Tightening torque: 0.6 Nm (5 in. lb)
- Remove upper section of steering column switch -1-.
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69-69


- Remove bolts -2- (2x).
Tightening torque: 0.6 Nm (5 in. lb)
- Remove hex bolt -1-.
Tightening torque: 0.6 Nm (5 in. lb)
- Remove lower trim for steering wheel switch -3-.

Notes: - Disconnect harness connector -1-.
- Release retaining tab (arrows) and pull spiral spring from steering
wheel switch.
Wheels must be in straight-ahead position when removing or installing
spiral spring. A new spiral spring is secured in the centered position using a tie
wrap.
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69-74

Airbag control module -J234-, removing
and installing


- Disconnect battery Ground (GND) strap.

- Remove front center console page 68
-30
.

Note:
If the airbag control module is replaced, the new control module must be
coded. - Disconnect securing bracket at harness connector -3-.
- Disconnect harness connector -3- from control module -1-.
- Remove nuts -2- (3x).
Tightening torque: 6 Nm (53 in. lb)
- Remove airbag control module -J234-.
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69-79

Side airbag unit, removing and installing


WARNING!

Before starting work on seats, connect
VAS5094 airbag adapter page 72
-9 .

Removing

WARNING!
Note:
Illustration is shown without anti-crush fleece. - Remove bolts -2- (2x).
Do NOT reuse bolts -2-. Replace the metal bolts with M5 bolts and
nuts supplied. Drill mounting holes to 5.5 mm.Tightening torque: 5.5 Nm (49 in. lb)
- Carefully disconnect side airbag -1- at retaining clip -5-.
- Remove side airbag -1-.
- Place airbag unit on appropriate surface with impact padding facing up.
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69-86

Removing

- Disconnect battery Ground (GND) strap.

- Remove front seat page 72
-2 .

- Remove lower A-pillar trim page 70
-72
.

- Unclip sill molding and fold upward.

- Pull up floor mat -4- near sensor.

- Disconnect harness connector -2- from crash
sensor for side airbag -1-.

Installing
WARNING! - Remove bolts -3- (2x).
Tightening torque: 6 Nm (53 in. lb)
- Remove crash sensor for side airbag -1-.
- Switch ignition on.
- Close doors.
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69-91


Fig. 1 Igniter at D-pillar
- Engage clip -7- in mount -A-.
- Install bolts -8-.

Tightening torque: 4 Nm (35 in. lb)
Use VAS 5122 and VAG 1783
1 - Side curtain airbag
5 - Igniter
6 - Airbag connector
7 - Clip

Fig. 2 Disconnecting harness connector for side curtain airbag
- Press catches -A- and disconnect harness connector in direction of
arrow.
6 - Side curtain airbag harness connector
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69-92


Fig. 3 Side curtain airbag at lower A-pillar
- Install lower bolt -A- first.
1 - Side curtain airbag
4 - Bolts (2x)
Tightening torque: 4 Nm (35 in. lb)

Fig. 4 Side curtain airbag at upper A-pillar
- Engage clip -3-.
- Bolt -A- must be attached along with A-pillar trim panel.
1 - Side curtain airbag
3 - Clip
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69-98


Fig. 1 Igniter at D-pillar
- Remove bolts -8-.
- Remove airbag in direction of arrow.
- Cable rolled up in delivery condition.
5 - Igniter
6 - Harness connector
7 - Retaining tab
8 - Bolts (2x)
Use VAS 5122 and VAG 1783
Tightening torque: 4 Nm (35 in. lb)
9 - Clip
A - Felt

Fig. 2 Disconnecting harness connector for side curtain airbag
- Press catches -A- and disconnect harness connector in direction of
arrow.
6 - Side curtain airbag harness connector
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