Chassis SUBARU LEGACY 1997 Service Repair Manual

BRAKES
[ABS
5
.31
TYPE]
[T7A3]
4-4d

7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

B1
2345
678910
1112
1
13
1
14
1
15
1
16
1
17
1
18
1
19
.
)

D

V

-
B4M1273A

I7A1
ICHONECK
IF
OTHER
WARNING
LIGHTS
TURN

Turn
ignition
switch
to
ON
(engine
OFF)
.

CHECK
:
Do
other
warning
lights
turn
on?

,rES
:
Go
to
step
7A2
.

No
:
Repair
combination
meter
.

7A2
I
CHECK
ABS
WARNING
LIGHT
BULB
.

1)
Turn
ignition
switch
to
OFF
.

2)
Remove
combination
meter
.

3)
Remove
ABS
warning
light
bulb
from
combination

meter
.

CHECK
:
Is
ABS
warning
light
bulb
OK?

,mss
:
Go
to
step
7A3
.

No
:
Replace
ABS
warning
light
bulb
.

7A3
CHECK
BATTERY

NG
LIGHT
HARNESS

SHO
RT
OF
ABS
WARN-

1)
Disconnect
connector
(B100)
from
connector
(F2)
.

2)
Measure
voltage
between
connector
(B100)
and
chas-

sis
ground
.

Connector
&
terminal
(B100)
No
.
9
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
thevoltage
less
than
3
V?

vES
:
Go
to
step
7A4
.

No
:
Repair
warning
light
harness
.

19

4-4d
[r7aa1
BRAKES
[ABS
5
.31
TYPE]

7
.
DiagnosticsChart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

2345
67890
B1~
1
11
1
12
1
13
1
14
1516
171819
1:
)

D

84M1273A

7A4
CHECK
BATTERY

NG
LIGHT
HARN

SSORT
OF
ABS
WARN-

1)
Turn
ignition
switch
to
ON
.

2)
Measure
voltage
between
connector
(B100)
and
chas-

sis
ground
.

Connector
&
terminal

(8100)
No
.
9
(+)
-
Chassis
ground
(
)
:

CHECK
:
is
voltage
less
than3
V?

YES
:
Go
to
step
7A5
.

No
:
Repair
warning
light
harness
.

7A5
CHECK
WIRING
HARNESS
.

1)
Turn
ignition
switch
to
OFF
.

2)
Install
ABS
warning
light
bulb
from
combination
meter
.

3)
Install
combination
meter
.

4)
Turn
ignition
switch
to
ON
.

5)
Measure
voltage
between
connector
(B100)
and
chas-

sis
ground
.

Connector
&
terminal

(B100)
No
.
9
(+)
-
Chassis
ground
(-)
:

CHECK
:
Is
voltage
between
10
V
and
15
V?

,rES
:
Go
to
step
7A6
.

No
:
Repair
wiring
harness
.

20

BRAKES
[ABS
5
.31
TYPE]
[r7Aal
4-4d

7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

F49

1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
9h0
1
11
1
12
1
13
1
1
411
516
1
17
1
18
1
19
1
20
2
1
23
24
2526
728293031

D

-_
B4M
1243A

7A6
CHECK
BATTERY

NG
LIGHT
HARN

SSORT
OF
ABS
WARN-

1)
Turn
ignition
switch
to
OFF
.

2)
Measure
voltage
between
connector
(F2)
and
chassis

ground
.

Connector
&
terminal

(F2)
No
.
9
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
thevoltage
less
than3
V?

,rES
:
Go
to
step
7A7
.

No
:
Repair
wiring
harness
.

7A7

CHECK
BATTERY

(
NG
LIGHT
HARNESS
.

SHO
RT
OF
ABSWARN-

1)
Turn
ignition
switch
to
ON
.

2)
Measure
voltage
between
connector
(F2)
and
chassis

ground
.

Connector
&
terminal

(F2)
No
.
9
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
voltage
less
than3
V?

vES
:
Go
to
step
7A8
.

No
:
Repair
wiring
harness
.

7A8
CHECK
GROUND
CIRCUIT
OF
ABSCM&H/U
.

Measure
resistance
between
ABSCM&H/U
and
chassis

ground
.

Connector
&
terminal

(F49)
No
.
23
-
GND
:

CHECK
:
Is
theresistance
less
than0
.5
92?

,rES
:
Go
to
step
7A9
.

No
:
Repair
ABSCM&H/U
ground
harness
.

21

4-4d
[r7A9]
BRAKES
[ABS
5
.3i
TYPE]

7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

7A9
CHECK
WIRING
HARNESS
.

Measure
resistance
between
connector
(F2)
and
chassis

ground
.

Connector
&
terminal

(F2)
No
.
9
-
Chassis
ground
:

CHECK
;
Is
the
resistance
less
than0
.5
11?

YES
:
Go
to
step
7A10
.

No
:
Repair
harness/connector
.

7A10
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switchto
OFF
.

CHECK
:
Is
there
poor
contact
in
connectors
between

combination
meter
and
ABSCM&HIU?
<
Ref
.

to
FOREWORD
[T3C1]
.*10
>

ves
:
Repair
connector
.

No
:
Replace
ABSCM&HIU
.

22

BRAKES
[ABS
5
.31
TYPE]
Cr7s3l
4-4d

7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

Diagnosis
connector
--J

1

-1
Di
gnosis
terminals

B4MOBOOA

711311
CHECK

I
CONNECTOR
.

LLATION
OF
ABSCM&H/U

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
ABSCM&HlU
connector
inserted
into

ABSCM
until
the
clamp
locks
onto
it?

,res
:
Go
to
step
71132
.

No
:
Insert
ABSCM&H/U
connector
into
ABSCM&H/U

until
the
clamp
locks
onto
it
.

71132
CHECK
DIAGNOSIS
TERMINAL
.

Measure
resistance
between
diagnosis
terminals
(B81)

and
chassis
ground
.

CHECK
:
Terminals

Diagnosis
terminal
(A)
-
Chassis
ground
:

Diagnosis
terminal
(B)
-
Chassis
ground
:

Is
the
resistance
less
than
0
.5
92?

,rES
:
Go
to
step
71133
.

No
:
Repair
diagnosis
terminal
harness
.

171133
1
CHECK
DIAGNOSIS
LINE
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
diagnosis
terminal
to
diagnosis
connector

(B82)
No
.
6
.

3)
Disconnect
connector
from
ABSCM&H/U
.

4)
Measure
resistance
between
ABSCM&H/U
connector

and
chassis
ground
.

CHECK
:
Connector
&
terminal

(F49)
No
.
4
-
Chassis
ground
:

Is
theresistance
less
than
0
.5
0?

,rES
:
Go
tostep
71134
.

No
:
Repair
harness
connector
between
ABSCM&H/U

and
diagnosis
connector
.

25

4-4d
[T7BaI
BRAKES
[ABS
5
.3i
TYPE]

7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

1~
\

MV

B4M0430

71134
CHECKGENERATOR
.

1)
Start
the
engine
.

2)
Idle
theengine
.

3)
Measure
voltage
between
generator
and
chassis

ground
.

Terminal

Generator
8
terminal
(+)
-
Chassis
ground
(
)
:

CHECK
;
Is
the
voltage
between
10
and
15
V?

vES
:
Go
to
step
7B5
.

No
:
Repair
generator
.

7B5
CHECK
BATTERY
TERMINAL
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
at
battery
terminal?

,rES
:
Repair
battery
terminal
.

No
:
Go
to
step
7B6
.

71136
CHECK
POWER
SUPPLY
OF
ABSCM
.

1)
Disconnect
connector
from
ABSCM&H/U
.

2)
Start
engine
.

3)
Idle
the
engine
.

4)
Measure
voltage
between
ABSCM&H/U
connector
and

chassis
ground
.

Connector
&
terminal

(F49)
No
.
1
(+)
-
Chassis
ground
(-)
:

CHECK
:
Is
thevoltage
between
10
and
15
V?

ves
:
Go
to
step
71137
.

No
:
Repair
ABSCM&H/U
power
supply
circuit
.

71137
1
CHECK
WIRING
HARNESS
.

1)
Disconnect
connector
(F2)
from
connector
(B100)
.

2)
Turn
ignition
switch
to
ON
.

CHECK
:
Does
the
ABS
warning
light
remain
off?

S
:
Go
to
step
7B8
.

No
:
Repair
front
wiring
harness
.

26

BRAKES
[ABS
5
.31
TYPE]
[T7B121
4-4d

7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

7B8
CHECK
PROJECTIONAT
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Check
for
broken
projection
at
the
ABSCM&H/U
termi

nal
.

CHECK
:
Are
the
projection
broken?

,res
:
Go
to
step
7139
.

No
:
Replace
ABSCM&H/U
.

-,
,

00000
~
o
00000
a
oooo1
~oo
oi
"
ooo~~

IIII
`'84M1237A

0

F2

B4M1236A
I

F2

5
4
320
9
1
8
1
7
1
6
1
190
80
7
0
6
~
5
413211

]L

B4M1236A

171319
I
CHECK
ABSCM&H/U
.

Measure
resistance
between
ABSCM&H/U
terminals
.

Terminals

No
.
21
-
No
.
23
:

CHECK
:
Is
the
resistance
more
than
1
MS2?

vES
:
Go
to
step
7810
.

No
:
Replace
ABSCM&H/U
.

7810
CHECK
WIRING
HARNESS
.

Measure
resistance
between
connector
(F2)
and
chassis

ground
.

Connector
&
terminal

(F2)
No
.
9
-
Chassis
ground
:

CHECK
:
Is
the
resistance
less
than0
.5
S2?

vES
:
Go
to
step
7811
.

No
:
Repair
harness
.

7811
CHECK
WIRING
HARNESS
.

1)
Connect
connector
to
ABSCM&H/U
.

2)
Measure
resistance
between
connector
(F2)
and
chas-

sis
ground
.

Connector
&
terminal

(F2)
No
.
9
-
Chassis
ground
:

CHECK
:
Is
the
resistance
more
than
1
MS2?

YES
:
Go
to
step
7812
.

No
:
Repair
harness
.

POOR
CONTACT
IN
ABSCM&H/U
7812

1
CONNECTOR
.
CONNECTOR
.

CHECK
:
Is
there
poor
contact
in
ABSCM&HlU
connec-

tor?
<
Ref
.
to
FOREWORD
[T3C1]
.*10
>

,rES
:
Repair
connector
.

No
:
Replace
ABSCM&H/U
.

27

BRAKES
LABS
5
.31
TYNCJ
Lncs1
'4-ta

7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure

Diagnosisconnector
--J

1-

\~
--~

31

--L
Diagnosis
terminas

S2

B4MOSOOA

7C1
CHECK
DIAGNOSIS
TERMINAL
.

Measure
resistance
between
diagnosis
terminals
(B81)

and
chassis
ground
.

Terminals
Diagnosis
terminal
(A)
-
Chassis
ground
:

Diagnosis
terminal
(B)
-
Chassis
ground
.

E
CHECK
:
Is
the
resistance
less
than
0
.5
fl?

C~
;-E-~s
:
Go
to
step
7C2
.

No
:
Repair
diagnosis
terminal
harness
.

CHECK
DIAGNOSIS
LINE
.

1)
Turn
ignition
switchto
OFF
.

2)
Connect
diagnosis
terminal
to
diagnosis
connector

(B82)
No
.
6
.

3)
Disconnect
connector
from
ABSCM&H/U
.

4)
Measure
resistance
between
ABSCM&H/U
connector

and
chassis
ground
.

Connector
&
terminal

(F49)
No
.
4
-
Chassis
ground
:

CHECK
:
Is
the
resistance
less
than0
.5
S2?

,rES
:
Go
to
step
7C3
.

No
:
Repair
harness
connector
between
ABSCM&H/U

and
diagnosis
connector
.

POOR
CONTACT
IN
ABSCM&H/U
7C3

1
CONNECTOR
.
CONNECTOR
.

CHECK
:
Is
there
poor
contact
in
ABSCM&HI
U
connec-

tor?
<
Ref
.
to
FOREWORD
[T3C1]
.*10
>

vES
:
Repair
connector
.

No
:
Replace
ABSCM&H/U
.

29

BRAKES
[ABS
5
.31
TYPE]
[TSE2]4-4d

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

Except
OUTBACK
model

1
2

D

S2
B4MOSO6E

OUTBACK
model

Front
Rear

1
2
2
1

D

84M
1036C

Except
OUTBACK
model

1
2

-
L
Vq
f
1

B4MO807E

OUTBACK
model

Front
Rear

2
1

D

_v
B4M1037C

$E1
CHECK
ABS
SENSOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABS
sensor
.

3)
Measure
resistance
of
ABS
sensor
connector
terminals
.

Terminal

Front
RH
No
.
1
-
No
.
2
:

Front
LH
No
.
1
-
No
.
2
:

Rear
RH
No
.
1
-
No,
2
:

Rear
LHNo
.
1
-
No
.
2
:

CHECK
:
Is
the
resistance
between
0
.8
and
1
.2
kS2?

,rES
:
Go
to
step
8E2
.

No
:
Replace
ABS
sensor
.

8E2
I
CHECK
BATTERY
SHORT
OF
ABS
SENSOR
.

1)
Disconnect
connector
from
ABSCM&H1U
.

2)
Measure
voltage
between
ABS
sensor
and
chassis

ground
.

Terminal

Front
RH
No
.
1
(+)
-
Chassis
ground
(
)
:

Front
LH
No
.
1
(+)
-
Chassis
ground
(
)
:

Rear
RH
No
.
1
(
+)
-
Chassis
ground
(
)
:

Rear
LH
No
.
1
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
the
voltage
less
than
1
V?

vES
:
Go
to
step
8E3
.

No
:
Replace
ABS
sensor
.

33

4-4d[T8E3]
BRAKES
[ABS
5
.31
TYPE]

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

Except
OUTBACK
model

M112

L
V
21
B4MOB07E

OUTBACK
model

Front
Rear

1
2
DI
2
1

D

_v
-_
B4M1037C

8E3
I
CHECK
BATTERY
SHORT
OF
ABS
SENSOR
.

1)
Turn
ignition
switch
to
ON
.

2)
Measure
voltage
between
ABS
sensor
and
chassis

ground
.

Terminal

Front
RH
No
.
1
(+)
-
Chassis
ground
(
)
:

Front
LHNo
.
1
(+)
-
Chassis
ground
(
)
:

Rear
RH
No
.
1
(+)
-
Chassis
ground
(-)
:

Rear
LH
No
.
1
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
the
voltage
less
than
1
V?

vES
:
Go
tostep
8E4
.

No
:
Replace
ABS
sensor
.

ETWEEN
8E4
CHECK

ABSCM&H
U
AND,ABS
SENSOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
connector
to
ABS
sensor
.

3)
Measure
resistance
between
ABSCM&H/U
connector

terminals
.

Connector
&
terminal

Trouble
code
21
/
(F49)
No
.
11
-
No
.
12
:

Trouble
code
23
/
(F49)
No
.
9
-
No
.
10
:

Trouble
code
25
l
(F49)
No
.
14
-
No
.
15
:

Trouble
code
27
l
(F49)
No
.
7
-
No
.
8
:

CHECK
:
Is
theresistance
between
0
.8
and
1
.2
kSZ?

vES
:
Go
to
step
8E5
.

No
:
Repair
harness/connector
between
ABSCM&H/U

and
ABS
sensor
.

34