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

69-51


Airbag component locations, overview

Repair Manual, Body On Board Diagnostic
(OBD), Repair Group 01
1 -
Driver-side airbag unit
Removing m.y. 1998 page 69
-53
Removing m.y. 1998 page 69
-54
2 -
Driver-side airbag unit (sport steering
wheel)
Removing m.y. 1998 page 69
-58
Removing m.y. 1998 page 69
-61
3 -
Airbag control module -J234-
Removing and installing page 69
-74
4 -
Passenger-side airbag unit
Removing page 69
-70
Locking and activating (adaptation)
5 -
Seat occupant sensor
Removing and installing page 69
-83
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69-52


6 -
Side airbag
Removing and installing page 69
-75
7 -
Crash sensor for side airbag
Removing and installing page 69
-85
8 -
Spiral spring
Removing and installing m.y. 1998
page 69
-64

Removing and installing from sport steering
wheel m.y. 1998 page 69
-67

Removing and installing m.y. 1998
page 69
-68

9 -
Data Link Connector (DLC)
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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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69-54


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

WARNING!
Follow all safety precautions when working on
the airbag page 69
-40
.
1 -
Steering wheel
Removing page 69
-57
- Secure loose cable at location indicated
by arrow -A-.
2 -
Harness connector for spiral spring
3 -
Harness connector for airbag unit
4 -
Multipoint socket
Always replace60 Nm (44 ft lb)
5 -
Airbag unit
6 -
Threaded bushing
7 -
Torx bolt (T30)
8 -
Torx wrench (T30)
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69-55


Removing
WARNING!
Follow all safety precautions when working on
airbag page 69
-40
. 9 -
Spiral spring
10 -
Harness connector for heated steering
wheel
- Release steering wheel adjuster.
- Pull steering wheel as far out and up as possible.
- Place steering wheel vertical.
-
Remove Torx bolt (T30).-
Turn steering wheel 1/2 turn (180 ) back and
remove second Torx bolt (T30). - Pull connector - 3 - from airbag unit.
- Place airbag unit on appropriate surface with
impact padding facing up.
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69-57


Steering wheel, removing and installing

Removing
Installing - Remove airbag unit page 69
-54
.
- Center steering wheel (wheels are straight).
- Remove bolt - 4 -.
- Disconnect harness connectors - 2 - and - 10 -.
- Center steering wheel (wheels straight).
- When installing, make sure harness connectors
audibly engage (click).
- Replace bolt - 4 - and tighten to 60 Nm (44 ft lb).
- Install airbag unit page Page 69
-54
.
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69-58


Driver-side airbag for sport steering wheel
( m.y. 1998), removing and installing

WARNING!
Follow all safety precautions when working on
airbags page 69
-40
.
1 -
Bolts to secure upper part of carrier unit
5 Nm (44 in. lb)
2 -
Harness connector for airbag unit
3 -
Airbag unit
4 -
Nut for steering wheel 42 Nm (31 ft lb)
5 -
Bolts to secure lower part of carrier unit. 5 Nm (44 in. lb).
6 -
Torx bolt (T30) 6 Nm (53 in. lb)
7 -
Securing cable for spiral spring
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69-60

Airbag sport steering wheel, retrofitting


For vehicles m.y. 1995 that were equipped
with an airbag as standard equipment, an Audi
dealer can retrofit the vehicle with an airbag sport
steering wheel.
The following components are required: airbag
sport steering wheel, airbag unit and applicable
label for the vehicle (e.g. S4).
Remove the sticker with the expiration date from
the new airbag unit and apply it to the airbag
identification plate on the lower driver-side B-
pillar.
If the vehicle does not have a label, note airbag
replacement in the maintenance plan.
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69-61


Driver-side airbag for sport steering wheel
(m.y. 1998 ), removing and installing

WARNING!
Follow all safety precautions when working on
airbags page 69
-40
.
1 -
Sport steering wheel
Removing page 69
-63
2 -
Harness connector for spiral spring
3 -
Airbag unit
4 -
Multipoint socket
Always replace60 Nm (44 ft lb)
5 -
Torx bolt (T30) 7 Nm (62 in. lb)
6 -
Torx wrench (T30)
7 -
Spiral spring
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69-63


Sport steering wheel, removing and
installing

Removing
Installing - Remove airbag unit page Page 69
-61
.
- Center steering wheel (wheels straight).
- Remove bolt - 4 - .
- Center steering wheel (wheels straight).
- Replace bolt - 4 - and tighten to 60 Nm (44 ft lb).
- Install airbag unit page Page 69
-61
.
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