sensor SUBARU FORESTER 1999 Service Owner's Guide

1. General
A: PRECAUTION
IIf any of the airbag system parts such as
sensors, airbag module, airbag control module and
harness are damaged or deformed, replace with
new genuine parts.
G5M0291
IWhen servicing, be sure to turn the ignition
switch off, disconnect the negative (þ) battery ter-
minal then the positive (+) terminal in advance, and
wait for more than 20 seconds before starting
work.
G5M0292
IWhen checking the system, be sure to use a
digital circuit tester. Use of an analog circuit tester
may cause the airbag to activate erroneously. Do
not directly apply the tester probe to any connec-
tor terminal of the airbag. When checking, use a
test harness.
G5M0293
G5M0294
3
[W1A0]5-5SERVICE PROCEDURE
1. General

I: FRONT SUB SENSOR
1. INSPECTION STANDARD
ICheck the front section (Refer to shaded area of
vehicle in figure) for damage, regardless of
whether or not airbag is deployed.
G5M0311
IThe designated trouble code is output during
self-diagnosis. <Ref. to 5-5 [T4A0].>
2. REPLACEMENT STANDARD
IBracket is deformed.
IHousing is cracked or deformed.
IThe label (that identifies the manufacturing num-
ber) is peeled or deteriorated.
IHarness circuit is broken, lead wire is exposed,
corrugated tube is cracked, etc.
IFront sub sensor determined as faulty as a
result of Diagnostics.
IAirbag is deployed (replace all front sub sen-
sors).
IFront sub sensor dropped to the floor/ground.
J: SIDE AIRBAG SENSOR
1. INSPECTION STANDARD
ICheck the side section (Refer to shaded area of
vehicle in figure) for damage, regardless of
whether or not airbag is deployed.
B5M0514
IThe designated trouble code is output during
self-diagnosis. <Ref. to 5-5 [T4A0].>
2. REPLACEMENT STANDARD
IBracket is deformed.
IHousing is cracked or deformed.
IThe label (that identifies the manufacturing num-
ber) is peeled or deteriorated.
IHarness circuit is broken, lead wire is exposed,
corrugated tube is cracked, etc.
ISide airbag sensor determined as faulty as a
result of Diagnostics.
ISide airbag is deployed (replace side airbag
sensor on the deployed side).
ISide airbag sensor dropped to the floor/ground.
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[W2J2]5-5SERVICE PROCEDURE
2. Inspection and Replacement Standards

5. Side Airbag 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 front seat <Ref. to 5-3 [W100].> and
roll up floor mat <Ref. to 5-3 [W5A3].>.
4) Remove console box. <Ref. to 5-4 [W1A0].>
5) Disconnect the two 12-pin yellow connectors
from airbag control module.
6) Remove side airbag sensor <Ref. to 5-5
[W7A0].> and then disconnect connector from side
airbag sensor. <Ref. to 5-5 [M2F3].>
7) Detach clips and then remove side airbag har-
ness.
S5M0307
8) Install in the reverse order of removal.
6. 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. <Ref. to 5-4 [W1A0].>
4) Remove instrument panel console. <Ref. to 5-4
[W1A0].>
5) Disconnect connector from airbag control mod-
ule.
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5-5[W5A0]SERVICE PROCEDURE
5. Side Airbag Harness

6) Using T40 TORXTbit (Tamper resistant type),
remove the four TORXTbolts in numerical
sequence shown in figure. Discard the old TORXT
bolts.
CAUTION:
Use new TORXTbolts during re-assembly.
S5M0219A
7) Install in the reverse order of removal.
7. Side Airbag Sensor
A: REMOVAL AND INSTALLATION
CAUTION:
IIf the side of the vehicle body is damaged by
a collision, be sure to check the left and right
side airbag 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.
IWhen painting or performing sheet metal
work on the side part of vehicle body, including
the side sill, center pillar, front and rear doors,
take utmost care not to apply dryer heat, paint-
ing mist, or the flame of the welding burner
directly to the side airbag sensors and wire
harness of the airbag system.
1) Turn ignition switch off.
2) Disconnect ground cable from battery and wait
for at least 20 seconds before starting work.
3) Remove center pillar lower trim. <Ref. to 5-3
[W5A1].>
4) Detach ELR of front seat belt. <Ref. to 5-3
[W3A0].>
5) Remove the two TORXTbolts and then detach
side airbag sensor while disconnecting connector.
<Ref. to 5-5 [M2F4].>
S5M0308
6) Install in the reverse order of removal.
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[W7A0]5-5SERVICE PROCEDURE
7. Side Airbag Sensor

9. 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 front side sill cover and then discon-
nect front sub sensor connector. <Ref. to 5-5
[M2F5].>
B5M0517
4) Remove front wheel and mud guard.
5) Disconnect connector from front sub sensor
assembly. <Ref. to 5-5 [M2F4].>
S5M0335
6) Remove wiring harness clips.
G5M0315
7) Remove grommet and then detach front sub
sensor harness.
G5M0316
8) Install in the reverse order of removal.
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5-5[W9A0]SERVICE PROCEDURE
9. Front Sub Sensor

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. <Ref. to 5-5 [M2F4].>
S5M0335
5) Remove front sub sensor.
S5M0336
6) Install in the reverse order of removal.
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[W9A2]5-5SERVICE PROCEDURE
9. Front Sub Sensor