2004 SUBARU FORESTER sensor

AB-20
AIRBAG SYSTEM (DIAGNOSTIC)
Electrical Components Location
2. RHD MODEL
(a) To body harness (b) To seat belt pretensioner (LH) (c) To seat belt pretensioner (RH)
(1) Front sub sensor (LH) (6) Passenger’s airbag inflator (13) Side airbag sensor (RH)
(2) Front sub sensor (RH) (7) Roll connector (14) Side airbag inflator (LH)
(3) Front sub sensor harness (LH) (8) Airbag main harness (15) Side airbag inflator (RH)
(4) Front sub sensor harness (RH) (9) Driver’s airbag inflator (16) Lap pretensioner
(5)
Airbag control module with built-in
safety and electric sensor(10) Side airbag harness (LH)
(12) Side airbag sensor (LH)
Connector
No.(AB1) (AB2) (AB3) (AB4) (AB7) (AB8) (AB9) (AB10) (AB11) (AB12) (AB13) (AB14)
Pole 622841212242422
Color Yellow Yellow Yellow Yellow Yellow Yellow Yellow Yellow Yellow Yellow Yellow Yellow
Male/Female Male Female Female Female Female Female Female Female Female Female Female Male
Connector
No.(AB15) (AB18) (AB19) (AB20) (AB21) (AB25) (AB26)
Pole 2222222
Color Yellow Yellow Yellow Yellow Yellow Orange Orange
Male/Female Female Female Female Female Female Female Male
AB-00738
(1)
(2)
(5)
(6)
(8)
(7)
(11)
(13)
(12)(10)
(b)
(c) (a)
(9)
(14)
(15)
(3)(4)
(16)
AB14
AB15
AB13
AB26
AB21
B31
AB2
AB25
AB20
AB12
AB18
AB7AB1
AB3AB8
AB19
AB10
AB11AB9
AB4

AB-22
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Control Module I/O Signal
WI-03205
AIRBAG CONTROL MODULE
L1G2YBr 1BR
2
AB13 (YELLOW) (BLACK)
(YELLOW)(YELLOW) INFLATOR (DRIVER SIDE)STEERING
ROLL CONNECTOR FRONT SUB SENSOR LH
FRONT SUB SENSOR RH
INFLATOR (PASSENGER SIDE)
(YELLOW)AB15(YELLOW)AB3
(YELLOW)
AB18
AB2
AB3
AB15AB18
AB4
GA
LWG
YLYWYBY
AB21
AB26YL 2YW1
15 26
YBrBR
9 20
13 147 8
YL 2YW 1Y
2
BW
28
YB
1
YGYR
11 10
YR 4YG
3
1212
AB21
BW
GAB-1
B
27
B
A/B(L)-02
A/B(L)-02
1234567891011121314151617
1819202122232425262728
AB4
1
234
AB14
AB13
LW 2G1
AB2
21

AB-23
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Control Module I/O Signal
WI-03411
YB 1YG 2YB 6YG 5B9G12L10W7B10G7L9W12
YB 1YG 2YB 1YG 2B 4G 3L 2W
1B 4G
3L
2W 1
AB7AB8
AB10AB12AB9
YR
2YR 1
YR 1YR 2AB19
AB20AB12
AB10AB8AB7
AB19
AB11AB9 (YELLOW)
(YELLOW)(YELLOW)
(YELLOW)(YELLOW) (YELLOW) (YELLOW)
(YELLOW)
AB11
YR 5YR 6
YR 1YR 2AB20
AIRBAG CONTROL MODULE
SIDE AIR BAG
SENSOR RH SIDE AIR BAG
SENSOR LH
INFLATOR
(SIDE LH)INFLATOR
(SIDE RH)
1221
34
123456
78910111210 11 12
123456
789
PRETENSIONER
LHPRETENSIONER
RH
A/B(L)-03A/B(L)-03

AB-25
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Control Module I/O Signal
WI-03207
AIRBAG CONTROL MODULE
L1G2P1Br 2
INFLATOR (DRIVER SIDE)FRONT SUB SENSOR LH
FRONT SUB SENSOR RH
INFLATOR (PASSENGER SIDE)
AB2
AB3
AB15AB18
AB4
GA
LG
YYBYBY
AB14
AB13P2Br
PBr 1
15 26
PBR
9 20
13 147 8
Y 2YB 1Y 2
B
28
YB 1
YGYR
11 10
YR 4YG 3B
A/B(R)-02
A/B(R)-02
STEERING
ROLL CONNECTOR
AB21
AB26Y2YB 1
AB13 (YELLOW) (BLACK)
(YELLOW)(YELLOW) (YELLOW)AB15(YELLOW)AB3
(YELLOW)
AB18
1212
AB211234567891011121314151617
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AB4
1
234
AB2
21

AB-26
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Control Module I/O Signal
WI-03208
YG 2YB 1YG 6YB 5W7L10G12B9W12L9G7B10
YG 2YB 1YG 1YB 2W 1L 2G 3B 4W 1L 2G 3B 4
AB7AB8
AB10AB12AB9
YR 2Y1
YR 1Y 2AB19
AB20
AB25
AB12
AB10AB8AB7
AB19
AB11
AB9
AB11
YR 5Y6
YR 1Y 2AB20
AIRBAG CONTROL MODULE
SIDE AIRBAG
SENSOR RH SIDE AIRBAG
SENSOR LH
INFLATOR
(SIDE LH)INFLATOR
(SIDE RH)
1234
21
123456
78910111210 11 12
123456
789
PRETENSIONER
LHPRETENSIONER
RH
YR 3Y4
YR 1Y 2AB25
LAP
SEAT BELT
PRETENSIONER
A/B(R)-03A/B(R)-03
(YELLOW) (YELLOW)
(YELLOW)(YELLOW)
(YELLOW)
(YELLOW)(YELLOW)
21(YELLOW)
(YELLOW)

AB-29
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Connector
5. FRONT SUB-SENSOR AND SIDE AIR-
BAG SENSOR
1) How to disconnect:
Holding outer part (A), pull it in the direction of the
arrow.
CAUTION:
When pulling, be sure to hold onto the connec-
tor and not the wire.
2) How to connect:
Holding the connector, and push it in carefully until
a connecting sound is heard.
CAUTION:
 Outer (A) moves back, and so do not put your
hand on the outer part.
 Be sure to insert the connector in until it
locks. Then pull on it gently to make sure that it
is locked.
6. LAP PRETENSIONER
1) How to disconnect:
(1) Using a flat tip screwdriver, pry the push
lock (A) upward to unlock.
(2) Pull the connector to disconnect from lap
pretensioner.
CAUTION:
When pulling the side lock, be sure to hold onto
the connector and not the wire.
2) How to connect:
Connect the connector in reverse order of discon-
necting. At this time, be sure to insert the connector
in until connecting sound is heard.
CAUTION:
 Be sure to insert the connector in until it
locks.
Then pull on it gently to make sure that it is
locked.
 Be sure to push the push lock in.
AB-00024
AB-00025
AB-00115
(A)
AB-00026
AB-00027

AB-34
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
11.Airbag Warning Light Failure
A: AIRBAG WARNING LIGHT REMAINS ON.
DIAGNOSIS:
 Airbag warning light unit is faulty.
 Airbag control module to airbag warning light circuit is shorted or open.
 Grounding circuit is faulty.
 Airbag control module is faulty.
 (AB1) and (B31) are not connected properly.
 (AB3) is not connected properly to the airbag control module.
CAUTION:
 Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground cable from battery, and wait more than 20 seconds before starting to work.
 After replacing the airbag module, seat belt pretensioner, roll connector, control module or sensor,
reconnect each part and confirm that the airbag warning light operates properly.
 When inspecting the airbag main harness, disconnect the airbag module connector of the driver
and passenger seats for safety reasons.

AB-39
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
B: AIRBAG WARNING LIGHT REMAINS OFF.
DIAGNOSIS:
 Fuse No. 14 (in fuse box) is blown.
 Body harness circuit is open.
 Airbag warning light is faulty.
 Airbag main harness is faulty.
 Airbag control module is faulty.
CAUTION:
 Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground cable from battery, and wait more than 20 seconds before starting to work.
 After replacing the airbag module, seat belt pretensioner, roll connector, control module or sensor,
reconnect each part and confirm that the airbag warning light operates properly.
 When inspecting the airbag main harness, disconnect the airbag module connector of the driver
and passenger seats for safety reasons.
1. LHD MODEL
WIRING DIAGRAM:
AB-00739
12
34561
2345678910123456789101112131415161718192021222324252627282930
B31 i11AB3
i10
B:
C: i10
i11
AIRBAG
WARNING
LIGHTCOMBINATION
METERB9
B8
B10
NO.14
i3B38 28
i2B37 19
5
AIRBAG CONTROL MODULEAB3
B31
AB1
3
3
AIRBAG
CIRCUIT
E
BATTERY
1234567891011121314151617
1819202122232425262728
IGNITION
SWITCH
B: C: