SUBARU LEGACY 1996 Service Repair Manual
Page 151 of 2890
5-5b
[TaE1)
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
4
.
DiagnosticsChart
for
On-board
Diagnostic
System
E
:
DIAGNOSTICS
PROCEDURE
1
.
AIRBAG
WARNING
LIGHT
STAYS
ON
AFTER
8
SECONDS
.
1)
Perform
on-board
diagnostic
.
<
Ref
.
to
5-5
[T4130]
.
*2>
2)
Are
trouble
codes
4,
12,
13,
22,
34,
41,
42
or
43
indi-
cated?
<
Ref
.
to
5-5
[T4D1
]*2-[T4D2]
.*2
>
Record
trouble
codes
.
If
"YES"
proceed
to
step
4)
.
If
"NO"
proceed
to
step
3)
.
3)
Proceed
with
diagnostics
and
repair
according
to
trou-
ble
code
indicated
then
perform
step
15)
.
4)
If
codes
4,
22,34,
42are
indicated,
proceed
tostep
5)
.
If
codes
4,
22,
34,
42
arenot
indicated,
proceed
to
step
10)
.
5)
If
codes
12,
13,
41,
43
are
indicated,
proceed
tostep
6)
.
If
codes
12,13,41,
43are
not
indicated,
proceed
to
step
11)
.
6)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Disconnect
passenger
side
airbag
module
connector
(AB9)
to
(AB10)
.
<
Ref
.
to
5-5
[W3A2]
.*1
>
Connect
test
harness
C
connector
(1
C)
to
(AB9)
.
Connect
airbag
resistorto
test
harness
C
connector
(3C)
.
Remove
lower
coverpanel
and
connect
test
harness
C
connector
(1C)
to
(AB8)
<
Ref
.
to
5-4
[W1A0)
.*1
>
with
airbag
resistor
attached
to
test
harness
C
connector
(3C)
.
Connect
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
"NOTE
:"
.
If
"YES"
proceed
tostep
7)
.
If
"NO"
proceed
tostep
3)
.
7)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Connect
passenger
side
air-
bagmodule
connector
(AB9)
to
(AB10)
.
Connect
battery
ground
cable
and
turn
ignition
switch
"ON"
.
Does
airbag
warning
light
go
"OFF"
after
8
seconds
and
remain
offfor
more
than
30
seconds?
See
"NOTE
:"
.
If
"YES"
proceed
to
step
8)
.
If
"NO"
proceed
tostep
13)
.
12
Page 152 of 2890
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
[T4E1]
5-5b
4
.
Diagnostics
Chart
for
On-board
Diagnostic
System
8)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Connect
connector
(A138)to
(AB3)
.
Remove
driver
side
airbag
moduleand
connect
test
harness
C
connector
(1C)
to
(AB7)
.
<
Ref
.
to
5-5
[W3A1]
.*1
>
Connect
airbag
resistorto
test
harness
C
connector
(3C)
.
Connect
battery
ground
cable
and
turn
ignition
switch
"ON"
.
Does
airbag
warning
light
go
"OFF"
after
8
seconds
and
remain
off
for
more
than
30seconds?
See
"NOTE
:"
.
If
"YES"
proceed
to
step
9)
.
If
"NO"
proceed
to
step
14)
.
9)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Replace
with
a
new
driver
side
airbag
module
.
<
Ref
.
to
5-5
[W3A1
]
.*1
>
Proceed
tostep
15)
.
10)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Remove
lower
cover
panel
and
connect
test
harness
C
connector
(1C)
to
(AB8)
<
Ref
.
to
5-4
[W1A0]
.*1
>
with
airbag
resistor
attached
to
test
harness
C
connector
(3C)
.
Connect
battery
ground
cable
and
turn
ignition
switch
"ON"
.
Does
airbag
warning
light
go
"OFF"
after
8
seconds
and
remain
off
for
more
than30
seconds?
See
"NOTE
:"
.
If
"YES"
proceed
to
step
8)
.
If
"NO"
proceed
to
step
3)
.
13
Page 153 of 2890
5-5b
[T4Ey]
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
4
.
Diagnostics
Chart
for
On-board
Diagnostic
System
11)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Disconnect
passen-
ger
side
airbag
module
connector
(AB9)
to
(AB10)
.
<
Ref
.
to
5-5
[W3A2]
.*1
>
Connect
test
harness
C
connector
(1C)
to
(AB9)
.
Connect
airbag
resistorto
test
harness
C
connector
(3C)
.
Connect
battery
ground
cable
and
turn
ignition
switch
"ON"
.
Does
airbag
warning
light
go
"OFF"
after
8
seconds
and
remain
off
for
more
than30
seconds?
See
"NOTE
:"
.
If
"YES"
proceed
to
step
12)
.
If
"NO"
proceed
to
step
3)
.
12)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Replace
with
a
new
passenger
side
airbag
module
<
Ref
.
to
5-5
[W3A2]
.*1
>
then
proceed
to
step
15)
.
13)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable
and
wait
20
seconds
.
Replace
with
a
new
passenger
side
airbag
module
<
Ref
.
to
5-5
[W3A2]
.*1
>
then
proceed
to
step
7)
.
14)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable,
and
wait
20
seconds
.
Replace
with
a
new
combination
switch,
<
Ref
.
to
5-5
[W7A0]
.*2
>
and
install
driver
side
airbag
module
<
Ref
.
to
5-5
[W3A1
]
.*1
>
.
Connect
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
"NOTE
:"
.
If
"YES"
proceed
to
step
16)
.
If
"NO"
proceed
to
step
9)
.
15)
Connect
battery
ground
cable
and
turn
ignition
switch
"ON"
.
Does
airbag
warning
light
go
"OFF"
after
8
seconds
and
remain
off
for
more
than30
seconds?
See
"NOTE
:"
.
If
"YES"
proceed
to
step
16)
.
If
"NO"
proceed
to
step
1)
.
16)
Perform
clear
memory
procedure
.
<
Ref
.
to
5-5
[T4C0]
.*2
>
If
memory
cannot
be
cleared,
another
trouble
code
exists
.
Return
to
step
1)
.
If
memory
can
be
cleared,
proceed
to
step
17)
.
17)
END
NOTE
:
e
Always
remember
to
secure
the
greendouble
locks
before
turning
the
ignition
switch
"ON"
.
9
In
some
cases
the
airbag
warning
light
will
go
"OFF"
after
8
seconds
but
will
turn
"ON"
again
within
30
sec-
onds
.
In
this
case
continue
diagnostics
with
the
basic
diagnostics
procedures
or
trouble
code
procedures
.
14
Page 154 of 2890
5-5b
[75G03
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
5
.
Diagnostics
Chart
with
Trouble
Code
1
.
Airbag
main
harness
inspection
m
3C
345
b
AB9
1C
`r
3C
B5M0120A
G
:
TROUBLE
CODE
22
DIAGNOSIS
:
"
Airbag
main
harness
circuit
is
open
.
"
Airbag
module
harness
(Passenger)
circuit
is
open
.
"
Airbag
control
module
is
faulty
.
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
1)
Remove
front
pillar
lower
trim
(Passenger
side)
.
<
Ref
.
to
5-3
[W5A1]
.*1
>,disconnect
connector
(AB9)
and
(AB10)
and
connect
connector
(AB9)
to
test
harness
C
connector
(1C)
.
(5B)
No
.
6
-
(3C)
No
.
4
:
Is
resistance
less
than10
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
.
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
24
Page 155 of 2890
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)
fromairbag
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
than10
V?
Replace
airbag
control
module
.
No
:
Go
to
step
2
.
25
Page 156 of 2890
5-5b
[T5H2]
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
5
.
Diagnostics
Chart
with
Trouble
Code
2
.
AIRBAG
MAIN
HARNESS
INSPECTION
B31
AB1
2A
5A
I
rrrrr
e
1
214s6'
9
1
10
1
11
1
12
1314IS18
17
18
B5M01198
1)
Go
to
step
2)
below
after
performing
diagnostics
on
airbag
system
asher
diagnosis
procedure
under
"1
.
AIR-
BAG
CONTROLMODULE
INSPECTION"
previouslyout-
lined
.
2)
Turn
ignition
switch
"OFF",
disconnect
battery
ground
cable
and
then
wait
at
least
20
seconds
.
3)
Disconnect
connector
(AB1)from
body
harness
con-
nector
(B31)
at
front
lower
pillar
(driver
side),
and
connect
connector
(AB1)
to
test
harness
A
connector
(2A)
.
4)
Measure
resistance
between
test
harness
A
connector
(5A)
and
test
harness
B2
connector
(5B)
terminals
.
CHECK
:
Connector
&
terminal
,mss
:
Go
to
step
3
.
No
:
Replace
airbag
main
harness
.
(5A)
No
.
9
-
(58)
No
.
5
:
Is
resistance
less
than
10
S2?
ves
:
Go
tostep
5)
.
No
:
Replace
airbag
main
harness
.
5)
Measure
resistance
between
each
terminalof
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
than10
K2?
3
.
FUSENo
.
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
Page 157 of 2890
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
Page 158 of 2890
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
thenwait
at
least
20
seconds
.
After
20
seconds
elapse,
remove
instrumentpanel
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
totest
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
Page 159 of 2890
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)
.
12
3
4
5
67
89
1
10
1
11
1
12
1
13
1
14
1
15
1
16
1
17
1
18
1
19
1
2
01
8B
i
GSM0559
I
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
B2
connector
(8B)
.
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?
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
Page 160 of 2890
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