SUBARU LEGACY 1996 Service Repair Manual

B: TROUBLE CODE 11
DIAGNOSIS:
Airbag control module is faulty.
Airbag main harness circuit is open.
Fuse No. 8 is blown.
Body harness circuit is open.
1. Airbag control module inspection
2. Airbag main harness inspection
3. Fuse No. 8 inspection
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
After 20 seconds elapse, remove instrument panel
lower cover, and disconnect (AB3) and (AB8), (AB9)
and (AB10).
G5M0559
1. AIRBAG CONTROL MODULE INSPECTION
1) Disconnect connector (AB6) from airbag control module
and connect it to test harness B2
connector (8B).
2) Connect battery ground cable and turn ignition switch
“ON”. (engine off)
3) Measure voltage across connector (5B) terminal and
chassis ground.
: Connector & terminal
(5B) No. 2 (+)—Chassis ground ():
Is voltage more than 10 V?
: Replace airbag control module.
: Go to step2.


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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

2. AIRBAG MAIN HARNESS INSPECTION
1) Go to step 2) below after performing diagnostics on air-
bag system as per diagnosis procedure under“1. AIR BAG
CONTROL MODULE INSPECTION”previously outlined.
2) Turn ignition switch“OFF”, disconnect battery ground
terminal and then wait at least 20 seconds.
B5M0119B
3) Disconnect body harness connector (B31) from connec-
tor (AB1) at front lower pillar, and connect connector (AB1)
to test harness A connector (2A).
4) Measure resistance between test harness A connector
(5A) terminal and test harness B2 connector (5B) terminal.
: Connector & terminal
(5A) No. 1—(5B) No. 2:
Is resistance less than 10Ω?
: Go to step 5).
: Replace airbag main harness.
5) Measure resistance between (5A) and (5B) connector
terminals and chassis ground.
: Connector & terminal
(5A) No. 1 (+)—Chassis ground ():
Is resistance more than 10 kΩ?
: Go to next.
: Replace airbag main harness.
: Connector & terminal
(5B) No. 2 (+)—Chassis ground ():
Is resistance more than 10 kΩ?
: Go to step3.
: Replace airbag main harness.
G5M0444
3. FUSE No. 8 INSPECTION
1) Turn ignition switch“OFF”, and remove airbag fuse pro-
tector.
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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

G5M0445
2) Remove and visually check fuse No. 8.
: Is fuse No. 8 blown?
: Replace fuse No. 8 if fuse No. 8 blows again,
repair body harness.
: Repair body harness.
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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

C: TROUBLE CODE 12
DIAGNOSIS:
Airbag main harness circuit is open.
Airbag module harness (Driver) circuit is open.
Roll connector circuit is open.
Airbag control module is faulty.
1. Airbag main harness inspection
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
G5M0446
1. AIRBAG MAIN HARNESS INSPECTION
1) Remove lower cover panel , and
connect connector (AB8) below steering column to test
harness C connector (1C).
G5M0559
2) Disconnect connector (AB6)
from airbag control module, and connect it to test harness
B2 connector (8B) terminal.
3) Measure resistance between test harness B2 connec-
tor (5B) and test harness C connector (3C) terminals.
: Connector & terminal
(5B) No. 14—(3C) No. 4:
Is resistance less than 10Ω?
: Go to next.
: Replace airbag main harness.
: Connector & terminal
(5B) No. 1—(3C) No. 3:
Is resistance less than 10Ω?
: Replace airbag control module.
: Replace airbag main harness.
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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

D: TROUBLE CODE 13
DIAGNOSIS:
Airbag main harness circuit is shorted.
Airbag module harness (Driver) is shorted.
Roll connector circuit is shorted.
Airbag control module is faulty.
1. Airbag main harness inspection
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
After 20 seconds elapse, remove instrument panel
lower cover, and disconnect (AB3) and (AB8), (AB9)
and (AB10).
G5M0559
1. AIRBAG MAIN HARNESS INSPECTION
1) Disconnect connector (AB6) from airbag control module
, and connect it to test harness B2
connector (8B).
2) Measure resistance between test harness B2 connec-
tor (5B) terminal.
: Connector & terminal
(5B) No. 1—(5B) No. 14:
Is resistance more than 10 kΩ?
: Replace airbag control module.
: Replace airbag main harness.
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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

E: TROUBLE CODE 14
DIAGNOSIS:
(AB9) and (AB10) are not connected properly.
(AB2) and (AB7) are not connected properly.
(AB3) and (AB8) are not connected properly.
(AB6) is not connected properly to airbag control mod-
ule.
1. Double lock inspection for connectors (AB9)
and (AB10)
2. Airbag control module double lock inspection
at connector (AB6)
3. Double lock inspection for connectors (AB3)
and (AB8)
4. Roll connector double lock inspection at
connectors (AB2) and (AB7)
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
B5M0029A
1. DOUBLE LOCK INSPECTION FOR CONNECTORS
(AB9) AND (AB10)
1) Remove front pillar lower trim (Passenger side). to 5-3 [W5A1].>
2) Check double lock of connectors (AB9) and (AB10).
: Is there poor contact in double lock of con-
nectors (AB9) and (AB10)?
: Repair poor contact in double lock of connectors
(AB9) and (AB10).
: Go to step2.



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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

G5M0449
2. AIRBAG CONTROL MODULE DOUBLE LOCK
INSPECTION AT CONNECTOR (AB6)
Check double lock of connector (AB6) connected to airbag
control module.
: Is there poor contact in double lock of con-
nector (AB6)?
: Repair poor contact in double lock of connector
(AB6).
: Go to step3.
G5M0312
3. DOUBLE LOCK INSPECTION FOR CONNECTORS
(AB3) AND (AB8)
1) Remove lower cover panel.
2) Check double lock of connectors (AB3) and (AB8)
below steering column.
: Is there poor contact in double lock of con-
nectors (AB3) and (AB8)?
: Repair poor contact in double lock of connectors
(AB3) and (AB8).
: Go to step4.
H5M0664
4. ROLL CONNECTOR DOUBLE LOCK INSPECTION
AT CONNECTORS (AB2) AND (AB7)
Remove driver side airbag module ,
and check double lock of connectors (AB2) and (AB7) at
roll connector.
: Is there poor contact in double lock of con-
nectors (AB2) and (AB7)?
: Repair poor contact in double lock of connectors
(AB2) and (AB7).
: Replace airbag control module.
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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

F: TROUBLE CODE 21
DIAGNOSIS:
Airbag control module is faulty.
1. Check if trouble code 21 is indicated.
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
terminal, and then wait at least 20 seconds. 5-5b [W5A0].>
1. CHECK IF TROUBLE CODE 21 IS INDICATED.
Confirm flashing trouble code according to 5-5b [T4A0]
“BASIC DIAGNOSTICS PROCEDURE”.
: Is airbag warning light trouble code 21 indi-
cated?
: Replace airbag control module.
: Clear memory.
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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

G: TROUBLE CODE 22
DIAGNOSIS:
Airbag main harness circuit is open.
Airbag module harness (Passenger) circuit is open.
Airbag control module is faulty.
1. Airbag main harness inspection
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
B5M0120A
1. AIRBAG MAIN HARNESS INSPECTION
1) Remove front pillar lower trim (Passenger side). to 5-3 [W5A1].>, disconnect connector (AB9) and (AB10)
and connect connector (AB9) to test harness C connector
(1C).
G5M0559
2) Disconnect connector (AB6)
from airbag control module, and connect it to test harness
B2 connector (8B) terminal.
3) Measure resistance between test harness B2 connec-
tor (5B) and test harness C connector (3C) terminals.
: Connector & terminal
(5B) No. 6—(3C) No. 4:
Is resistance less than 10Ω?
: Go to next.
: Replace airbag main harness.
: Connector & terminal
(5B) No. 7—(3C) No. 3:
Is resistance less than 10Ω?
: Replace airbag control module.
: Replace airbag main harness.
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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code

H: TROUBLE CODE 31
DIAGNOSIS:
Airbag control module is faulty.
Airbag main harness circuit is open.
Fuse No. 16 is blown.
Body harness circuit is open.
1. Airbag control module inspection
2. Airbag main harness inspection
3. Fuse No. 16 inspection
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
After 20 seconds elapse, remove instrument panel
lower cover, and disconnect (AB3) and (AB8), (AB9)
and (AB10).
G5M0559
1. AIRBAG CONTROL MODULE INSPECTION
1) Disconnect connector (AB6) from airbag control module
, and connect it to test harness B2
connector (8B).
2) Connect battery ground cable and turn ignition switch
“ON”(engine off).
3) Measure voltage across connector (5B) terminal and
chassis ground.
: Connector & terminal
(5B) No. 5 (+)—Chassis ground ():
Is voltage more than 10 V?
: Replace airbag control module.
: Go to step2.


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5-5bSUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code