Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1996 1996 Service Manual 1996 LEGACY RHD (RIGHT HAND DRIVE) SERVICE MANUAL SUPPLEMENT Troubleshooting Section MSA5T9603A29724
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5-5b [75G03 SUPPLEMENTAL 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.
1 . AIRBAG MAIN HARNESS INSPECTION
m
3C 1) Remove front pillar lower trim (Passenger side) . < Ref.
to 5-3 [W5A1] .*1 >, disconnect connector (AB9) and
AB9 (AB10) and connect connector (AB9) to test harness C
3 4 5 b
1C connector (1C) .
`r 3C
B5M0120A
2) Disconnect connector (AB6) < Ref. to 5-5 [W6A0] .*2 >
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.
CHECK : Connector & terminal
(5B) No. 6 - (3C) No. 4:
Is resistance less than 10 91?
Go to next CHECK
No : Replace airbag main harness.
CHECK : Connector & terminal
(58) No. 7 - (3C) No. 3:
Is resistance less than 10 S2?
,rES : Replace airbag control module .
No : Replace airbag main harness.
24
SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE) [T5H11 5-5b
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 1 . Airbag control module inspection
1 2. Airbag main harness Inspection
1 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).
1 . AIRBAG CONTROL MODULE INSPECTION
1) Disconnect connector (AB6) from airbag control mod-
ule < Ref. to 5-5 [W6A0] .*2 >, and connect it to test har-
ness 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.
CHECK : Connector & terminal
(5B) No. 5 (+) - Chassis ground ():
Is voltage more than 10 V?
Replace airbag control module.
No : Go to step 2.
25
5-5b [T5H2] SUPPLEMENTAL 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
airbag system as her diagnosis procedure under "1 . AIR-
BAG CONTROL MODULE INSPECTION" previously out-
lined.
2) Turn ignition switch "OFF", disconnect battery ground
cable and then wait at least 20 seconds.
B31 3) Disconnect connector (AB1) from body harness con-
AB1
nector (B31) at front lower pillar (driver side), and connect
2A connector (AB1) to test harness A connector (2A) .
5A 4) Measure resistance between test harness A connector
I (5A) and test harness B2 connector (5B) terminals.
rrrrr CHECK : Connector & terminal
1 214 e (5A) No. 9 - (58) No . 5:
s6'
Is resistance less than 10 S2?
9 1 10 111 112 13 14 IS 18 17 18
B5M01198 ves : Go to step 5).
No : Replace airbag main harness.
5) Measure resistance between each terminal of connec-
tors (5A) and (5B) and chassis ground .
CHECK : Connector & terminal
(5A) No. 9 (+) - Chassis ground ():
,rES : Go to next
No : Replace airbag main harness.
CHECK : Connector & terminal
(5B) No. 5 (+) - Chassis ground ():
Is resistance more than 10 K2?
,mss : Go to step 3.
No : Replace airbag main harness.
3. FUSE No. 16 INSPECTION
Make sure ignition switch is turned "OFF", then remove
and visually check fuse No. 16 .
CHECK : Is fuse No. 16 blown?
,res : Replace fuse No. 16. If fuse No . 16 blows again,
repair body harness.
No : Repair body harness.
26
SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE) [T511] 5-5b
5. Diagnostics Chart with Trouble Code
I: TROUBLE CODE 33
DIAGNOSIS:
* Airbag module is inflated .
1 . Check it trouble code 33 Is Indicated .
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch "OFF", disconnect battery ground
terminal, and then wait at least 20 seconds. < Ref. to 5-5
[W6A0] .*2 >
1 . CHECK IF TROUBLE CODE 33 IS INDICATED.
Confirm flashing trouble code according to [T4A0]*2
"BASIC DIAGNOSTICS PROCEDURE" .
CHECK : Is airbag warning light trouble code 33 indi-
cated?
~,rES'~ : Replace airbag control module .
No : Clear memory.
27
5-5b [TWO] SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code
J: TROUBLE CODE 34
DIAGNOSIS:
9 Airbag main harness circuit (Passenger) is shorted to
power supply .
* Airbag module harness (Passenger) is shorted to power
supply .
9 Airbag control module is faulty .
r 1 . Airbag main harness inspection
l
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch "OFF", disconnect battery ground termi-
nal and then wait at least 20 seconds.
After 20 seconds elapse, remove instrument panel
lower cover, and disconnect (AB3) and (AB8), (AB9) and
(AB10).
1 . AIRBAG MAIN HARNESS INSPECTION
1) Disconnect connector (AB6) from airbag control mod-
ule < Ref. to 5-5 [W6A0] .*2 >, and connect it to test har-
ness 132 connector (8B) .
2) Connect battery ground cable and turn ignition switch
"ON" (engine off) .
3) Measure voltage across each test harness 132 connec-
tor (5B) terminal and chassis ground .
CHECK : Connector & terminal
(5B) No. 6 (+) - Chassis ground ():
Is voltage less than 1 V?
ves : Go to next CHECK
No : Replace airbag main harness .
CHECK ; Connector & terminal
(5B) No. 7 (+) - Chassis ground ():
Is voltage less than 1 V?
,rES : Replace airbag control module.
No : Replace airbag main harness.
28
SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE) [T5K1] 5-Sb
5. Diagnostics Chart with Trouble Code
K: TROUBLE CODE 41
DIAGNOSIS :
Airbag main harness circuit (Driver) is shorted to
ground .
" Airbag module harness (Driver) is shorted to ground.
" Roll connector circuit is shorted to ground .
" 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).
1 . AIRBAG MAIN HARNESS INSPECTION
1) Disconnect connector (AB6) from airbag control mod-
i ule < Ref . to 5-5 [W6A0] .*2 >, and connect it to test har-
8B ness B2 connector (8B) .
1 2 3 4 5 6 7 8 9
1101 11 112 1 13 1 14 115 116 117 1 18 119 1201 2) Measure resistance between test harness 132 connec-
tor (5B) terminals and chassis ground .
CHECK : Connector & terminal
(58) No. 1 (+) - Chassis ground ():
is resistance more than 200 S2?
GSM0559 I
Go to next CHECK
No : Replace airbag main harness.
CHECK : Connector & terminal
(5B) No. 14 (+) - Chassis ground ():
Is resistance more than 200 S2?
0 : Replace airbag control module.
No : Replace airbag main harness.
29
5-5b [750] SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code
L: TROUBLE CODE 42
DIAGNOSIS :
* Airbag main harness circuit (Passenger) is shorted to
ground .
* Airbag module harness circuit (Passenger) is shorted to
ground .
e 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).
1 . AIRBAG MAIN HARNESS INSPECTION
1) Disconnect connector (AB6) from airbag control mod-
ule < Ref. to 5-5 [W6A0] .*2>, and connect it to test har-
ness 132 connector (8B) .
2) Measure resistance between test harness 132 connec-
tor (5B) terminals and chassis ground .
CHECK ; Connector & terminal
(5B) No. 6 (+) - Chassis ground ():
Is resistance more than 200 S2?
,mss : Go to next CHECK
No : Replace airbag main harness.
CHECK : Connector & terminal
(5B) No. 7 (+) - Chassis ground (-):
Is resistance more than 200 0?
YES : Replace airbag control module.
No : Replace airbag main harness.
30
SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE) [T5M1] 5-5b
5. Diagnostics Chart with Trouble Code
M: TROUBLE CODE 43
DIAGNOSIS:
* 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 .
1 . Airbag main harness Inspection
CAUTION:
Before performing diagnostics on airbag system, turn
ignition switch "OFF", disconnect battery ground termi-
nal and then wait at least 20 seconds.
After 20 seconds elapse, remove instrument panel
lower cover, and disconnect (AB3) and (AB8), (AB9) and
(AB10).
1 . AIRBAG MAIN HARNESS INSPECTION
1) Disconnect connector (AB6) from airbag control mod-
ule < Ref. to 5-5 [W6A0] .*2 >, and connect it to test har-
ness 132 connector (8B) .
2) Connect battery ground cable and turn ignition switch
"ON" (engine off) .
3) Measure voltage across each test harness 132 connec-
tor (5B) terminal and chassis ground .
CHECK : Connector & terminal
(5B) No. 1 (+) - Chassis ground ():
Is voltage less than 1 V?
YES . G o to next CHECK
No : Replace airbag main harness.
CHECK : Connector & terminal
(58) No. 14 (+) - Chassis ground (-):
Is voltage less than 1 V?
vES : Replace airbag control module.
No : Replace airbag main harness.
31
5-5b [T5NO] SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Chart with Trouble Code
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)
2. Inspection of body harness, connector and
airbag warning light
1 3. Grounding circuit inspection
CAUTION :
Before performing diagnostics on airbag system, turn
ignition switch "OFF", disconnect battery ground cable
and then wait at least 20 seconds.
1 . DOUBLE LOCK INSPECTION FOR CONNECTORS
(AB1) AND (B31)
1) Remove front pillar lower trim (Driver side) .
B31 2) Check double lock of connectors (AB1) and (B31) .
CHECK : Is there poor contact in double lock of con-
nectors (A81) and (831)?
ABi ~~>` Repair poor contact in double lock of connecto rs
(A131) and (B31) .
No : Go to step 2.
1,~\ 1
ti BSM0122B
32
SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE) [T5N2] 5-5b
5. Diagnostics Chart with Trouble Code
2. INSPECTION OF BODY HARNESS, CONNECTOR
B31
1A AND AIRBAG WARNING LIGHT
1) Turn ignition switch "OFF" and connect body harness
connector (B31) to test connector A connector (1A) .
5Ar.~.
,fl(( i
1 2 3 4 5 B 7 8
9 101.112131415 761718
I
B5M0123B
2) Connect battery ground cable and turn ignition switch
"ON", (engine off) and connect connectors (3A) and (4A) .
CHECK ; Does the airbag warning light come off?
,rES : Go to step 3).
Go to next ~ .
~K : Is there anything unusual to body harness?
Repair body harness.
Replace airbag warning light module 1~ .
NOTE :
After problem has been eliminated, disconnect connectors
(3A) and (4A) .
3) Turn ignition switch "OFF", disconnect battery ground
cable and then wait at least 20 seconds, and re-connect
i connectors (AB1) and (B31) .
4) Remove instrument panel lower cover and disconnect
1 2 31 5 8 7 8 9
.
[lo ll11 121 131 141 15 1 16 1 17 1 t18 20
(AB3) with (AB8), then disconnect connector (AB6) from
airbag control module, < Ref. to 5-5 [W6A0] .*2 > and
connect it to test harness 132 connector (8B) .
i
G5M0559 I
5) Connect battery ground cable and turn ignition switch
"ON," (engine off) and connect connectors (6B) and (7B) .
CHECK : Does the airbag warning light come on?
0 : Go to step 3 .
No : Replace airbag main harness .
NOTE :
After problem has been eliminated, disconnect connectors
(6B) and (7B) .
33
5-5b [T5N3] SUPPLEMENTAL RESTRAINT SYSTEM (ELECTRIC SENSOR TYPE)
5. Diagnostics Ch art with Trouble Code
3. GROUNDING CIRCUIT INSPECTION
B31
1A 1) Turn ignition switch "OFF", disconnect battery ground
-; cable and then wait at least 20 seconds. Disconnect con-
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