light SUBARU LEGACY 1996 Service User Guide

SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
[TaD2]
5-5b

4
.
Diagnostics
Chart
for
On-board
Diagnostic
System

Trouble
code/Contents
of
troubles
Memory
function
Contents
of
diagnosis
Page

1)
Airbag
warning
light
is
faulty
.

2)
Airbag
control
module
to
airbag
warning
light

Airbag
warning
light
remains
on
.
Not
provided
.
harness
circuit
is
shorted
or
open
.
32
3)
Grounding
circuit
is
faulty
.
4)
Airbag
control
module
is
faulty
.

5)
(AB1)
and
(B39)arenot
connected
properly
.

1)
Fuse
No
.
15
is
blown
.

2)
Body
harness
circuit
is
open
.

Airbag
warning
light
remains
off
.
Not
provided
.
3)
Airbag
warning
light
is
faulty
.
35
4)
Airbag
main
harness
is
faulty
.

5)
Airbag
control
module
is
faulty
.

Warning
light
indicates
trouble
code,

then
normal
code
.
(Flashing
trouble
Provided
.
Airbag
system
component
parts
are
faulty
.
38

code
.)

1)
Airbag
connector
is
faulty
.

Warning
light
indicates
trouble
code,
2)
Fuse
No
.
16
is
blown
.

then
normal
code
.
(Flashing
normal
Not
provided
.
3)
Airbag
main
harness
is
faulty
.
41

code
.)
4)
Airbag
control
module
is
faulty
.

5)
Body
harness
is
faulty
.

[NOTE]
Dr
:
Driver
side
Ps
:
Passenger
side

2
.
HOW
TOREAD
TROUBLE
CODES

TheAIRBAG
warning
light
flashes
a
code
corresponding

to
the
faulty
parts
.

The
long
segment
(1.2
secon)
indicates
a
"ten",
and
the

short
segment
(0
.3
secon)
indicates
a
"one"
.

Example
:

ON
Flashing10
111
p
~
J
~
L
J
1
code
12
:
OFF

1
.2
0
.3
0
.3
0
.3
0
.3
1
2
(Sec)

ON
Flashing
OFF
10
10

70
.3171d
.2
_

11

10
code
21
:

T
12
0
.3
1
.2
0
.3
(Sec)

Flashing
ON

normal
OFF
code
:
1
0
.6
0
.6
(Sec)

85M01
17A

11

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

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

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

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
[T5NO]
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)

5
.
Diagnostics
Chart
with
Trouble
Code

1
.
Double
lockinspection
for
connectors(AB1)

and
(B31)

2
.
Inspection
of
body
harness,
connector
and

airbag
warning
light

1
3
.
Grounding
circuit
inspection

B31

ABi
~~>`

1,~\
1
ti
BSM0122B
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)
arenot
connected
properly
.

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)
.

2)
Check
double
lock
of
connectors
(AB1)
and
(B31)
.

CHECK
:
Is
there
poor
contact
in
double
lock
of
con-

nectors
(A81)
and
(831)?

Repair
poor
contact
in
double
lock
of
connect
o

(A131)
and
(B31)
.

No
:
Go
to
step
2
.

32

rs

SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
[T5N2]
5-5b

5
.
Diagnostics
Chart
with
Trouble
Code

B31
1A

5A
r
.~
..

,fl((
i

1
23
45B
7
89
101
.112131415
761718
I

B5M0123B

i

1
2
31
5
8789
[
lo
l
l1
1
12
1
13
1
14
1
15
1
16
1
17
1
.
t18
20

i

G5M0559
I

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)
.

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
tostep
3)
.

Go
tonext
~
.

~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

connectors
(AB1)
and
(B31)
.

4)
Remove
instrument
panel
lower
cover
and
disconnect

(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)
.

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

SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
[T502]
5-5b

5
.
Diagnostics
Chart
with
Trouble
Code

O
:
AIRBAG
WARNING
LIGHT
REMAINSOFF
.

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
1
.
Fuse
No
.
15inspection

1
2
.
Body
harness
inspection

3
.
Airbag
warning
light
module
(in
combination

meter)
inspection

1
4
.
Airbag
main
harness
Inspection

CAUTION
:

Before
performing
diagnostics
on
airbag
system,
turn

ignition
switch
"OFF",
disconnect
battery
ground

terminal,
and
then
wait
at
least
20
seconds
.

1
.
FUSE
No
.
15
INSPECTION

Remove
and
visually
check
fuse
No
.
15
.

CHECK
;
Is
fuse
No
.
15
blown?

(]
ES
:
Replace
fuse
No
.
15
.

If
fuse
No
.
15
blows
again,
go
to
step
2
.

No
:
Go
to
step
2
.

2
.
BODY
HARNESS
INSPECTION

Turn
ignition
switch
"ON"
(engine
off)
to
make
sure
other

warning
lights
(in
combination
meter)
illuminate
.

CHECK
:
Do
all
the
warning
lights
(in
combination

meter)
except
airbag
warning
light
come
on?

vES
:
Go
to
step
3
.

No
:
Repair
body
harness
.

35

5-5b
(T503]
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)

5
.
Diagnostics
Chart
with
Trouble
Code

B31

AB1

r
`,~~,
;
r
:cr

B5M01228

0)0
0

J
J

AB

B8

.
.o/

G5M0312

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)
fromcon-

nector
(AB1),

3)
Connect
battery
ground
cable
and
turn
ignition
switch

"ON"
(engine
off)
to
make
sure
airbag
warning
light
illu-

minates
.

CHECK
:
Does
the
airbag
warning
light
come
on?

vss
:
Go
to
step
4
.

Replace
airbag
warning
light
module

4
.
AIRBAG
MAIN
HARNESS
INSPECTION

1)
Turn
ignition
switch
"OFF",
disconnect
battery
ground

cable
and
then
wait
atleast
20
seconds
.

2)
Connect
body
harness
connector
(B31)
and
connector

(AB1)
.

3)
Disconnect
connectors
(AB3)
and
(AB8)
below
steering

column
.
<
Ref
.
to
5-5[M2-6]
.*1
>

4)
Disconnect
connector
(AB6)
from
airbag
control
mod-

ule
.
<
Ref
.
to
5-5
[W6A0]
.*2
>

5)
Connect
battery
ground
cable
and
turn
ignition
switch

"ON"
to
make
sure
airbag
warning
light
illuminates
.

CHECK
:
Does
the
airbag
warning
light
come
on?

Replace
airbag
control
module
.

No
:
Replace
airbag
main
harness
.

36

5-5b
[TSPO]
SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)

5
.
DiagnosticsChart
with
Trouble
Code

P
:
WARNING
LIGHT
INDICATES
TROUBLE

CODE,
THEN
NORMAL
CODE
.

-
FLASHING
TROUBLE
CODE
.
-

DIAGNOSIS
:

Airbagsystem
component
parts
are
faulty
.

1
.
Airbag
component
parts
appearance

inspection

1
2
.
Airbag
component
parts
vibration
inspection

1
3
.
Showering
Inspection
to
body

CAUTION
:

Beforeperforming
diagnostics
on
airbag
system,
turn

ignition
switch
"OFF",
disconnect
battery
ground
cable,

and
thenwait
at
least
20
seconds
.

38