SUBARU FORESTER 2004 Service Repair Manual
Manufacturer: SUBARU, Model Year: 2004, Model line: FORESTER, Model: SUBARU FORESTER 2004Pages: 2870, PDF Size: 38.67 MB
Page 171 of 2870
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:
Page 172 of 2870
AB-40
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
Step Check Yes No
1 CHECK COMBINATION METER.
Turn the ignition switch to ON, and confirm that
warning lights equipped in the combination
meter are turned on.Do the warning lights not for
airbag turn on?Go to step 2.Repair the combi-
nation meter
power supply.
Meter System.>
2 CHECK FUSE NO. 14 (IN FUSE&RELAY
BOX).
Remove the fuse No. 14 and perform visual
inspection.Is the fuse No. 14 (in fuse &
relay box) blown out? Replace the fuse
No. 14. If fuse No.
14 blows again, go
to step 3. Go to step 3.
3 CHECK AIRBAG WARNING LIGHT CIRCUIT
(IN COMBINATION METER).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB1) from
(B31).
3) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Go to step 4.Replace the airbag
warning light bulb
or combination
meter printed cir-
cuit.
Meter Assembly.>
4 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (AB1) to (B31).
3) Disconnect the connector (AB3) from the
airbag control module.
4) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Replace the airbag
control module.
Module.>Replace the airbag
main harness with
body harness.
Page 173 of 2870
AB-41
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
2. RHD MODEL
WIRING DIAGRAM:
AB-00740
12
34561
2345678910123456789101112131415161718192021222324252627282930
B31 i11AB3
i10
B:
C: i10
i11
AIRBAG
WARNING
LIGHTCOMBINATION
METERB9
B8
B10
NO.14
i3B38 20
10
16
AIRBAG CONTROL MODULEAB3
B31
AB1
1
3
AIRBAG
CIRCUIT
E
BATTERY
1234567891011121314151617
1819202122232425262728
IGNITION
SWITCH
Page 174 of 2870
AB-42
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
Step Check Yes No
1 CHECK COMBINATION METER.
Turn the ignition switch to ON, and confirm that
warning lights equipped in the combination
meter are turned on.Do the warning lights not for
airbag turn on?Go to step 2.Repair the combi-
nation meter
power supply.
Meter System.>
2 CHECK FUSE NO. 14 (IN FUSE&RELAY
BOX).
Remove the fuse No. 14 and perform visual
inspection.Is the fuse No. 14 (in fuse &
relay box) blown out?Replace the fuse
No. 14. If fuse No.
14 blows again, go
to step 3. Go to step 3.
3 CHECK AIRBAG WARNING LIGHT CIRCUIT
(IN COMBINATION METER).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB1) from
(B31).
3) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Go to step 4.Replace the airbag
warning light bulb
or combination
meter printed cir-
cuit.
Meter Assembly.>
4 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (AB1) to (B31).
3) Disconnect the connector (AB3) from the
airbag control module.
4) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Replace the airbag
control module.
Module.>Replace the airbag
main harness with
body harness.
Page 175 of 2870
AB-43
AIRBAG SYSTEM (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
12.List of Diagnostic Trouble Code (DTC)
A: LIST
DTCMemory func-
tionContents of diagnosis Index No.
11 Provided. Airbag main harness circuit is open, shorted or
shorted to ground.
Airbag module harness circuit (driver) is open,
shorted or shorted to ground.
Roll connector circuit is open, shorted or shorted
to ground.
Airbag control module is faulty.
Driver’s airbag module is faulty.
with Diagnostic Trouble
Code (DTC).>
12 Provided. Airbag main harness circuit is open, shorted or
shorted to ground.
Airbag module harness circuit (passenger) is
open, shorted or shorted to ground.
Airbag control module is faulty.
Passenger’s airbag module is faulty.
with Diagnostic Trouble
Code (DTC).>
15 Provided. Airbag main harness circuit (driver) is shorted to
power supply.
Airbag module harness (driver) is shorted to power
supply.
Roll connector is shorted to power supply.
Airbag control module is faulty.
Driver’s airbag module is faulty.
with Diagnostic Trouble
Code (DTC).>
16 Provided. Airbag main harness circuit (passenger) is shorted
to power supply.
Airbag module harness (passenger) is shorted to
power supply.
Airbag control module is faulty.
Passenger’s airbag module is faulty.
with Diagnostic Trouble
Code (DTC).>
21 Provided. Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
22 Provided.Front airbag module and seat belt pretensioner (LH/
RH) are inflated.
with Diagnostic Trouble
Code (DTC).>
23 Not provided.(AB3), (AB7) and (AB8) are not connected properly
to airbag control module.
with Diagnostic Trouble
Code (DTC).>
24 Not provided. Airbag control module is faulty.
Airbag main harness circuit is open.
Fuse No. 11 (in joint box) is blown.
Body harness circuit is open.
with Diagnostic Trouble
Code (DTC).>
25 Provided. Airbag control module is faulty.
Airbag main harness circuit is open.
Fuse No. 6 (in joint box) is blown.
Body harness circuit is open.
with Diagnostic Trouble
Code (DTC).>
31 Provided. Front sub-sensor harness circuit (RH) is shorted,
opened or shorted to power supply.
Airbag main harness circuit is shorted, opened or
shorted to power supply.
Front sub-sensor (RH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
Page 176 of 2870
AB-44
AIRBAG SYSTEM (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
32 Provided. Front sub-sensor harness circuit (LH) is shorted,
opened or shorted to power supply.
Airbag main harness circuit is shorted, opened or
shorted to power supply.
Front sub-sensor (LH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
41 Provided. Side airbag harness (RH) is faulty.
Side airbag module (RH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
42 Provided. Side airbag harness (LH) is faulty.
Side airbag module (LH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
45 Provided. Side airbag harness (RH) is shorted to power sup-
ply.
Side airbag module (RH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
46 Provided. Side airbag harness (LH) is shorted to power sup-
ply.
Side airbag module (LH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
51 Provided. Side airbag sensor (RH) is faulty.
Side airbag harness (RH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
52 Provided. Side airbag sensor (LH) is faulty.
Side airbag harness (LH) is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
53 Provided. Side airbag sensor (RH) is faulty.
with Diagnostic Trouble
Code (DTC).>
54 Provided. Side airbag sensor (LH) is faulty.
with Diagnostic Trouble
Code (DTC).>
55 Provided. Side airbag module is operate.
with Diagnostic Trouble
Code (DTC).>
61 Provided. Seat belt pretensioner circuit (RH) is open, shorted
or shorted to ground.
Airbag control module is faulty.
Pretensioner is faulty.
Pretensioner harness is faulty.
with Diagnostic Trouble
Code (DTC).>
62 Provided. Seat belt pretensioner circuit (LH) is open, shorted
or shorted to ground.
Airbag control module is faulty.
Pretensioner is faulty.
Pretensioner harness is faulty.
with Diagnostic Trouble
Code (DTC).>
65 Provided. Seat belt pretensioner circuit (RH) is shorted to
power supply.
Pretensioner is faulty.
Pretensioner harness is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).> DTCMemory func-
tionContents of diagnosis Index No.
Page 177 of 2870
AB-45
AIRBAG SYSTEM (DIAGNOSTIC)
List of Diagnostic Trouble Code (DTC)
66 Provided. Seat belt pretensioner circuit (LH) is shorted to
power supply.
Pretensioner is faulty.
Pretensioner harness is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
72 Provided. Airbag main harness circuit is open, shorted or
shorted to ground.
Airbag module harness circuit (passenger) is
open, shorted or shorted to ground.
Airbag control module is faulty.
Passenger’s airbag module is faulty.
with Diagnostic Trouble
Code (DTC).>
76 Provided. Airbag main harness circuit (passenger) is shorted
or shorted to power supply.
Airbag module harness circuit (passenger) is
shorted to power supply.
Airbag control module is faulty.
Passenger’s airbag module is faulty.
with Diagnostic Trouble
Code (DTC).>
81 Provided. Lap seat belt pretensioner circuit (RH) is open,
shorted or shorted to ground.
Lap pretensioner is faulty.
Lap pretensioner harness is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).>
85 Provided. Lap seat belt pretensioner circuit (RH) is shorted to
power supply.
Lap pretensioner is faulty.
Lap pretensioner harness is faulty.
Airbag control module is faulty.
with Diagnostic Trouble
Code (DTC).> DTCMemory func-
tionContents of diagnosis Index No.
Page 178 of 2870
AB-46
AIRBAG SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
13.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC 11
DIAGNOSIS:
Airbag main harness circuit is open, shorted or shorted to ground.
Airbag module harness circuit (Driver) is open, shorted or shorted to ground.
Roll connector circuit is open, shorted or shorted to ground.
Driver’s airbag module 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.
When replacing the airbag module, seat belt pretensioner, roll connector, control module and sen-
sor, confirm that airbag warning light is turn normally after reconnect the each parts.
When inspecting the airbag main harness, disconnect the driver’s airbag module and passenger’s
airbag module connectors for safety reasons.
WIRING DIAGRAM:
AB-00741
AB3
AB21
AB26
AB222
11
14
13
AB21AB3AB2
1212
AIRBAG CONTROL MODULE
STEERING
ROLL CONNECTOR
INFLATOR
(DRIVER SIDE)
1234567891011121314151617
1819202122232425262728
Page 179 of 2870
AB-47
AIRBAG SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK DRIVERS AIRBAG MODULE.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Remove the driver’s airbag module.
3) Connect the connector (1N) in test harness
N to connector (AB2).
4) Connect the airbag resistor to connector
(2N) in test harness N.
5) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on normally?Replace the
driver’s airbag
module.
Airbag Module.>Go to step 2.
2 CHECK ROLL CONNECTOR.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 second.
2) Disconnect the test harness N from the
connector (AB2).
3) Remove the instrument panel lower cover,
disconnect the connector (AB26) from (AB21)
and connect the connector (1F) in test harness
F to connector (AB21).
4) Connect the airbag resistor to connector
(3F) in test harness F.
5) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light turn
on normally?Replace the roll
connector.
nector.>Go to step 3.
3 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the ground cable, and wait more than 20 sec-
onds.
2) Disconnect the airbag resistor from the
connector (3F) in test harness F.
3) Remove the glove box, and disconnect con-
nectors (AB4) and passenger’s airbag module
(AB27).
4) Disconnect the connector (AB3) from the
airbag control module, and connect the con-
nector (1R) in test harness R.
5) Measure the resistance between connector
(2R) in test harness R and the connector (3F)
in test harness F.
Connector & terminal
(2R) No. 2 — (3F) No. 4:
(2R) No. 4 — (3F) No. 3: Is the resistance less than 10
Ω?Go to step 4.Replace the airbag
main harness with
body harness.
4 CHECK AIRBAG MAIN HARNESS.
Measure the resistance of the connector (2R)
in test harness R.
Connector & terminal
(2R) No. 2 — (2R) No. 4:
(2R) No. 4 — Chassis ground:
(2R) No. 2 — Chassis ground:Is the resistance more than 1
MΩ?Replace the airbag
control module.
Module.>Replace the airbag
main harness with
body harness.
Page 180 of 2870
AB-48
AIRBAG SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
B: DTC 12
DIAGNOSIS:
Airbag main harness circuit is open, shorted or shorted to ground.
Airbag module harness circuit (Passenger) is open, shorted or shorted to ground.
Passenger’s airbag module 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.
When replacing the airbag module, seat belt pretensioner, roll connector, control module and sen-
sor, confirm that airbag warning light is turn normally after reconnect the each parts.
When inspecting the airbag main harness, disconnect the airbag module connector of the driver
and passenger seats for safety reasons.
WIRING DIAGRAM:
AB-00742
AB3 INFLATOR
(PASSENGER SIDE)
AB4
AB4
AB27
11
10 3
47
8
1
2
AIRBAG CONTROL MODULEAB3
12341234567891011121314151617
1819202122232425262728