1996 SUBARU LEGACY warning

E: DIAGNOSTICS PROCEDURE
Airbag warning light stays on after 8 seconds.
1) Perform on-board diagnostic.
2) Are trouble codes 2, 4, 12, 13, 22, 23, 24 or 32 indicated?
Record trouble codes.
3) If“NO”, proceed with diagnostics and repair according to trouble code indicated then perform step 29).
4) If“YES”, proceed by turning ignition switch“OFF”, disconnect battery ground cable, and wait 20 seconds. If codes 12 or 13 are
indicated proceed to step 5). If codes 12 or 13 are not indicated proceed to step 6).
5) Remove driver side airbag module and connect test harness C
connector (1C) to (AB7).
Connect airbag resistor to test harness C connector (3C). Pro-
ceed to step 19).
G5M0430
6) If codes 4 or 22 are indicated, proceed to step 7). If codes 4 or 22 are not indicated proceed to step 11).
7) Turn ignition switch“OFF”, disconnect battery ground cable,
and wait 20 seconds. Disconnect passenger side airbag mod-
ule connector (AB9) to (AB10). Connect
test harness C connector (1C) to (AB9).
Connect airbag resistor to test harness C connector (3C).
B5M0118A
8) Reconnect battery ground cable and turn ignition switch“ON”, does airbag warning light go out after 8 seconds and remain“OFF”
for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.)
9) If“YES”, turn ignition switch“OFF”, disconnect battery ground cable, and wait 20 seconds. Install a new passenger side airbag
module then proceed to step 29).
10) If“NO”proceed to step 1).
11) Remove lower cover panel and connect test harness C con-
nector (1C) to (AB8) with airbag resis-
tor attached to test harness C connector (3C).
Turn ignition switch“ON”. Does airbag warning light go“OFF”
after 8 seconds and remain off for more than 30 seconds?
See notes 1) and 2). (Refer to end of chart.)
If“YES”proceed to step 5).
If“NO”proceed to step 12).
G5M0429
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5-5SUPPLEMENTAL RESTRAINT SYSTEM
4. Diagnostics Chart for On-board Diagnostic System

12) Turn ignition switch“OFF”, disconnect battery ground cable,
and wait 20 seconds. Connect connector (AB3) to (AB8). Dis-
connect passenger side airbag module connector (AB9) to
(AB10).
Connect test harness C connector (1C) to (AB9). Connect
airbag resistor to test harness C connector (3C).
B5M0118A
13) Reconnect battery ground cable and turn ignition switch“ON”. Does airbag warning light go“OFF”after 8 seconds and remain off
for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.)
14) If“YES”, proceed to step 9).
15) If“NO”, turn ignition switch“OFF”, disconnect battery ground
cable, and wait 20 seconds. Disconnect connector (AB3) to
(AB8). Connect test harness C connector (1C) to (AB8). Con-
nect airbag resistor to test harness C connector (3C).
G5M0429
16) Reconnect battery ground cable and turn ignition switch“ON”. Does airbag warning light go“OFF”after 8 seconds and remain off
for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.)
17) If“YES”, turn ignition switch“OFF”, disconnect battery ground cable and wait 20 seconds. Install a new passenger side airbag
module then proceed to step 5).
18) If“NO”, proceed with diagnostics according to trouble code indicated during on-board diagnostic. Proceed to step 29).
19) Reconnect battery ground cable and turn ignition switch“ON”, does airbag warning light go out after 8 seconds and remain
“OFF”for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.)
20) If“YES”, turn ignition switch“OFF”, disconnect battery ground cable and wait 20 seconds. Install driver side airbag module to 5-5 [W3B0].> and proceed to step 29).
21) If“NO”, remove lower cover panel and connect test harness
C connector (1C) to (AB8) with airbag
resistor attached to test harness C connector (3C).
Turn ignition switch“ON”. Does airbag warning light go“OFF”
after 8 seconds and remain off for more than 30 seconds?
See notes 1) and 2). (Refer to end of chart.)
If“YES”proceed to step 22).
If“NO”proceed to step 23).
G5M0429
22) If“YES”, replace combination switch, and proceed to step 26).
23) If“NO”, proceed with diagnostics and repair according to trouble code indicated, then perform step 24).
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5-5SUPPLEMENTAL RESTRAINT SYSTEM
4. Diagnostics Chart for On-board Diagnostic System

24) Turn ignition switch“OFF”, disconnect battery ground cable,
and wait 20 seconds. Remove driver side airbag module and
connect test harness C connector (1C) to (AB7) [W3A1].> with airbag resistor attached to test harness C con-
nector (3C).
G5M0430
25) Reconnect battery ground cable and turn ignition switch“ON”. Does airbag warning light go“OFF”after 8 seconds and remain off
for more than 30 seconds? See notes 1) and 2). (Refer to end of chart.) If“YES”, proceed to step 26). If“NO”, proceed to step
27).
26) Turn ignition switch“OFF”, disconnect battery ground cable, and wait 20 seconds. Install driver side airbag module [W3B0].> and proceed to step 27).
27) Replace combination switch, and proceed to step 26).
28) Reconnect battery and turn ignition switch“ON”. Does airbag warning light go off after 8 seconds and remain off for more than 30
seconds? See notes 1) and 2). (Refer to end of chart.) If“YES”, proceed to step 29). If“NO”, proceed to step 31).
29) Perform clear memory procedure.
30) If memory cannot be cleared, another trouble code exists. Return to step 1).
31) Turn ignition switch“OFF”, disconnect battery ground cable, and wait 20 seconds. Replace driver side airbag module. 5-5 [W3A1].> Proceed to step 28).
NOTES:
1) Always remember to secure the green double locks before turning the ignition switch “ON”.
2) In some cases the airbag warning light will go “OFF” after 8 seconds but will turn “ON” again within 30 seconds. In this
case continue diagnostics with the basic diagnostics procedures or trouble code procedures.
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5-5SUPPLEMENTAL RESTRAINT SYSTEM
4. Diagnostics Chart for On-board Diagnostic System

N: AIRBAG WARNING LIGHT REMAINS ON.
DIAGNOSIS:
Airbag warning light is faulty.
Airbag control module to airbag warning light harness
circuit is shorted or open.
Grounding circuit is faulty.
Airbag control module is faulty.
(AB1) and (B31) are not connected properly.
1. Double lock inspection for connectors (AB1)
and (B31)
O.K.
Not O.K.
Apply double lock.
2. Inspection of body harness, connector and
airbag warning light
O.K.
Not O.K.
Repair body harness or replace airbag main harness
or warning light.
3. Grounding circuit inspection
O.K.
Not O.K.
Repair body grounding circuit or replace airbag main
harness.
Replace airbag control module.
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
B5M0122B
1. DOUBLE LOCK INSPECTION FOR CONNECTORS
(AB1) AND (B31)
1) Remove front pillar lower trim (Driver side).
2) Check double lock of connectors (AB1) and (B31).



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5-5SUPPLEMENTAL RESTRAINT SYSTEM
5. Diagnostics Chart with Trouble Code

B5M0123B
2. INSPECTION OF BODY HARNESS, CONNECTOR
AND AIRBAG WARNING LIGHT
1) Turn ignition switch“OFF”and connect body harness
connector (B31) to test connector A connector (1A).
G5M0455
2) Connect battery ground cable and turn ignition switch
“ON”, (engine off) and connect connectors (3A) and (4A) to
check if warning light goes out. If it does, go to step 4)
below. If it remains on, check body harness and repair if
necessary.
B5M0124A
3) If body harness is satisfactory, replace airbag warning
light module

1. After problem has been eliminated, discon-
nect connectors (3A) and (4A).
G5M0559
4) Turn ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds, and re-connect
connectors (AB1) and (B31).
5) Remove instrument panel lower cover and disconnect
(AB3) with (AB8), then disconnect connector (AB6) from
airbag control module, and connect
it to test harness B2 connector (8B).
G5M0458
6) Connect battery ground cable and turn ignition switch
“ON,”(engine off) and connect connectors (6B) and (7B) to
check if warning light goes out. If it does, go to“3.
GROUNDING CIRCUIT INSPECTION”. If it remains on,
replace airbag main harness. After problem has been
eliminated, disconnect connectors (6B) and (7B).
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5-5SUPPLEMENTAL RESTRAINT SYSTEM
5. Diagnostics Chart with Trouble Code

O: AIRBAG WARNING LIGHT REMAINS OFF.
DIAGNOSIS:
Fuse No. 15 is blown.
Body harness circuit is open.
Airbag warning light is faulty.
Airbag main harness is faulty.
Airbag control module is faulty.
1. Fuse No. 15 inspection
O.K.
Not O.K.
Replace fuse No. 15.
2. Body harness inspection
O.K.
Not O.K.
Repair body harness.
3. Airbag warning light module (in combination
meter) inspection
O.K.
Not O.K.
Replace airbag warning light module.
4. Airbag main harness inspection
O.K.
Not O.K.
Replace airbag main harness.
Replace airbag control module.
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
terminal, and then wait at least 20 seconds.
G5M0460
1. FUSE No. 15 INSPECTION
1) Remove and visually check fuse No. 15.
2) If fuse is blown, replace it with a new one. After con-
necting battery cable and turning ignition switch“ON”,ifit
blows again, proceed to“2. BODY HARNESS INSPEC-
TION”.
2. BODY HARNESS INSPECTION
Turn ignition switch“ON”(engine off) to make sure other
warning lights (in combination meter) illuminate. If they do
not, check body harness.




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5-5SUPPLEMENTAL RESTRAINT SYSTEM
5. Diagnostics Chart with Trouble Code

B5M0122B
3. AIRBAG WARNING LIGHT MODULE (IN
COMBINATION METER) INSPECTION
1) Turn ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
2) Disconnect body harness connector (B31) from connec-
tor (AB1).
B5M0124A
3) Connect battery ground cable and turn ignition switch
“ON”(engine off) to make sure airbag warning light illumi-
nates.
If it does not, replace airbag warning light module

1.
G5M0312
4. AIRBAG MAIN HARNESS INSPECTION
1) Turn ignition switch“OFF”, disconnect battery ground
cable and then wait at least 20 seconds.
2) Connect body harness connector (B31) and connector
(AB1).
3) Disconnect connectors (AB3) and (AB8) below steering
column.
G5M0313
4) Disconnect connector (AB6) from airbag control mod-
ule.
5) Connect battery ground cable and turn ignition switch
“ON”to make sure airbag warning light illuminates.
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5-5SUPPLEMENTAL RESTRAINT SYSTEM
5. Diagnostics Chart with Trouble Code

P: WARNING LIGHT INDICATES TROUBLE
CODE, THEN NORMAL CODE.
—FLASHING TROUBLE CODE.—
DIAGNOSIS:
Airbag system component parts are faulty.
1. Selection of check parts
2. Airbag component parts appearance
inspection
O.K.
Not O.K.
Replace faulty parts.
3. Airbag component parts vibration inspection
O.K.
Not O.K.
Replace faulty parts.
4. Showering inspection to body
O.K.
Not O.K.
Replace faulty parts.
Clear memory.
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch“OFF”, disconnect battery ground
cable, and then wait at least 20 seconds.




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5-5SUPPLEMENTAL RESTRAINT SYSTEM
5. Diagnostics Chart with Trouble Code