SUBARU LEGACY 1999 Service Repair Manual

3. Airbag Module
A: REMOVAL AND INSTALLATION
CAUTION:
IThe airbag module (driver, passenger and
side) must not be disassembled. The airbag
module cannot be used again once inflated.
G5M0299
IWhen removing and installing the airbag
module (driver, passenger and side), the opera-
tor should stand, as much as possible, on the
side of the airbag module.
G5M0300
IAfter removal, the airbag module (driver,
passenger and side) should be kept away from
heat and light sources, and stored on a clean,
flat surface to prevent from any damage to its
lower structure.
G5M0301
IDo not check airbag module (driver, passen-
ger and side) continuity with airbag removed
from the vehicle body.
G5M0302
IReplace airbag module (driver, passenger
and side) with a new one, should any of the
following conditions develop:
IPad surface is scratched or cracked.
IConnector harness is damaged.
IInflator side structure of module is
cracked or deformed.
IModule is excessively stained with water,
oil, etc.
IModule was accidentally dropped.
IThe front seat assembly is damaged or
deformed.
IThe removed front seat with the airbag mod-
ule must be kept on its back. At this time, keep
the module side at least 200 mm (7.87 in) away
from walls or other objects.
B5M0515A
IWhen storing a removed airbag module
(driver and passenger), be sure to place it in
parallel with floor with the pad facing up. Do
not place it against a wall, or place anything on
the pad; otherwise, a dangerous condition may
be created if the module malfunctions.
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[W3A0]5-5SERVICE PROCEDURE
3. Airbag Module

G5M0604
1. DRIVER'S AIRBAG MODULE
1) Set front wheels in straight ahead position.
2) Turn ignition switch off.
3) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.
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5-5[W3A1]SERVICE PROCEDURE
3. Airbag Module

4) Using TORXTBIT T30, remove two TORXT
bolts.
H5M0662A
5) Disconnect airbag connector on back of airbag
module.
H5M0664
6) Refer toªCAUTIONºfor handling of a removed
airbag module.
7) Installation is in the reverse order of removal.
CAUTION:
Do not allow harness and connectors to inter-
fere or get caught with other parts.
2. PASSENGER'S AIRBAG MODULE
1) Remove instrument panel. [W1A0].>
2) Remove four bolts and then carefully remove
airbag module.
B5M0098
3) Refer toªCAUTIONºfor handling of a removed
airbag module.
4) Installation is in the reverse order of removal.CAUTION:
Do not allow harness and connectors to inter-
fere or get caught with other parts.
3. SIDE AIRBAG MODULE
The side airbag module cannot be detached from
the front seat assembly. When replacing side air-
bag module, replace front seat assembly. 5-3 [W100].>
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[W3A3]5-5SERVICE PROCEDURE
3. Airbag Module

4. Main Harness
A: REMOVAL AND INSTALLATION
1) Turn ignition switch off.
2) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.
3) Remove lower cover.
Disconnect airbag connector (AB3) and (AB8)
below steering column.
CAUTION:
Do not reconnect airbag connector at steering
column until main harness are securely re-in-
stalled.
G5M0312
4) Remove console box.
5) Disconnect connector from airbag control mod-
ule.
6) Disconnect body harness connector (B31) from
connector (AB1).
NOTE:
The following procedures for removal are for ªLHD
modelº. The procedures for ªRHD modelº are sym-
metrically opposite.
B5M0103B
7) Remove front side sill cover and then discon-
nect airbag connector (AB9) and (AB10). 5-5 [M2F2].>
B5M0029A
8) Roll up floor mat and side sill lower cover of
both side and then remove main harness.
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5-5[W4A0]SERVICE PROCEDURE
4. Main Harness

9) Disconnect front sub sensor connector (A), side
airbag sensor connector (B) (side airbag equipped
model) and then remove protector (C).
10) Detach clips and then remove airbag main
harness.
B5M0516A
11) Installation is in the reverse order of removal.
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[W4A0]5-5SERVICE PROCEDURE
4. Main Harness

5. Airbag Control Module
A: REMOVAL AND INSTALLATION
CAUTION:
IDo not disassemble the airbag control mod-
ule.
G5M0322
IIf the airbag control module is deformed, or
if water damage is suspected, replace the air-
bag control module with a new genuine part.
G5M0323
IAfter removal, keep the airbag control mod-
ule on a dry, clean surface away from heat and
light sources, and moisture and dust.
G5M0324
1) Turn ignition switch off.
2) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.3) Remove lower cover.
Disconnect airbag connector (AB3) and (AB8)
below steering column.
CAUTION:
Do not reconnect airbag connector at steering
column until airbag control module is securely
re-installed.
G5M0312
4) Remove console box.
5) Disconnect connector from airbag control mod-
ule.
6) Using TORX
TBIT T40 (Tamper resistant type),
remove two TORXTbolts. Discard the old TORXT
bolts.
CAUTION:
Use new TORX
Tbolts during re-assembly.
B5M0105
7) Installation is in the reverse order of removal.
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5-5[W5A0]SERVICE PROCEDURE
5. Airbag Control Module

6. Combination Switch
A: REMOVAL
1) Turn ignition switch off.
2) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.
3) Remove lower cover.
Disconnect airbag connector (AB3) and (AB8)
below steering column.
CAUTION:
Do not reconnect airbag connector at steering
column until combination switch is securely re-
installed.
G5M0312
4) Disconnect combination switch connectors
from body harness connector.
5) Set front wheels in straight ahead position.
Using TORX
TBIT T30, remove two TORXTbolts.
H5M0662A
6) Disconnect airbag connector on back of airbag
module. Remove airbag
module, and place it with pad side facing upward.

H5M0664
7) Using steering puller, remove steering wheel.
CAUTION:
Do not allow connector to interfere when
removing steering wheel.
G5M0332
8) Remove steering column covers.
9) Removing two retaining screws, remove combi-
nation switch.
B5M0106
B: ADJUSTMENT
1. CENTERING ROLL CONNECTOR
Before installing steering wheel, make sure to cen-
ter roll connector built into combination switch.
1) Make sure that front wheels are positioned
straight ahead.
2) Install steering gearbox, steering shaft and
combination switch properly. Turn roll connector
pin (A) clockwise until it stops.
3) Then, back off roll connector pin (A) approxi-
mately 2.65 turns until ªGº marks aligned.
B5M0457A
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[W6B1]5-5SERVICE PROCEDURE
6. Combination Switch

C: INSTALLATION
CAUTION:
Failure to do this might damage roll connector.
1) Before installing combination switch, check to
ensure that combination switch is off and front
wheels are set in the straight ahead position.
2) Install column cover and center roll connector.
3) Install steering wheel in neutral position. Care-
fully insert roll connector pin (A) into hole on steer-
ing wheel.
NOTE:
If steering wheel angle requires fine adjustment,
adjust tie-rod.
B5M0457A
4) Install airbag module and lower cover in the
reverse order of removal.
7. Front Sub Sensor
A: REMOVAL AND INSTALLATION
CAUTION:
IIf the front end of the vehicle body is dam-
aged by a collision, be sure to check the left
and right front sub sensors, even if the airbag
was not inflated. If any damage to the sensor or
any deformation of the sensor mount is found,
replace with a new genuine part.
G5M0291
IWhen painting or performing sheet metal
work on the front part of vehicle body, includ-
ing the front wheel apron, front fender and
front side frame, take utmost care not to apply
dryer heat, painting mist, or the flame of the
welding burner directly to the front sub sen-
sors and wire harness of the airbag system.
G5M0310
1. FRONT SUB SENSOR HARNESS
1) Turn ignition switch off.
2) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.
3) Remove lower cover.
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5-5[W6C0]SERVICE PROCEDURE
7. Front Sub Sensor

C: INSTALLATION
CAUTION:
Failure to do this might damage roll connector.
1) Before installing combination switch, check to
ensure that combination switch is off and front
wheels are set in the straight ahead position.
2) Install column cover and center roll connector.
3) Install steering wheel in neutral position. Care-
fully insert roll connector pin (A) into hole on steer-
ing wheel.
NOTE:
If steering wheel angle requires fine adjustment,
adjust tie-rod.
B5M0457A
4) Install airbag module and lower cover in the
reverse order of removal.
7. Front Sub Sensor
A: REMOVAL AND INSTALLATION
CAUTION:
IIf the front end of the vehicle body is dam-
aged by a collision, be sure to check the left
and right front sub sensors, even if the airbag
was not inflated. If any damage to the sensor or
any deformation of the sensor mount is found,
replace with a new genuine part.
G5M0291
IWhen painting or performing sheet metal
work on the front part of vehicle body, includ-
ing the front wheel apron, front fender and
front side frame, take utmost care not to apply
dryer heat, painting mist, or the flame of the
welding burner directly to the front sub sen-
sors and wire harness of the airbag system.
G5M0310
1. FRONT SUB SENSOR HARNESS
1) Turn ignition switch off.
2) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.
3) Remove lower cover.
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5-5[W6C0]SERVICE PROCEDURE
7. Front Sub Sensor

4) Disconnect airbag connector (AB3) and (AB8)
below steering column.
CAUTION:
Do not reconnect airbag connector at steering
column until front sub sensors are securely re-
installed.
G5M0312
5) Remove front side sill cover and then discon-
nect front sub sensor connector. [M2F2].>
B5M0517
6) Remove front wheel and mud guard.
7) Disconnect connector from front sub sensor
assembly.
B5M0518
8) Remove wiring harness clips.
G5M0315
9) Remove grommet and then detach front sub
sensor harness.
G5M0316
2. FRONT SUB SENSOR ASSEMBLY
1) Turn ignition switch off.
2) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.
3) Remove front wheel and mud guard.
4) Disconnect connector from front sub sensor
assembly.
B5M0518
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[W7A2]5-5SERVICE PROCEDURE
7. Front Sub Sensor