wire SUBARU LEGACY 1997 Service Repair Manual

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

6
.
Diagnostics
Chart
for
On-board
Diagnosis
System

I
TROUBLE
OCCURS
.I

Is
Select
Monitor
available?
I
Yes
1
10
.
Diagnostic
Chart
with
Select
1
Monitor
.

Ask
the
customer
when
and
how
the
trouble
occurred
using
interview
check
list
.

6
.
Diagnostics
Chart
for
On-board

Diagnosis
System

A
:
BASIC
DIAGNOSTICS
PROCEDURE

I
PRE-INSPECTION
I

I
CALLING
UPA
TROUBLE
CODE
.
I

No
trouble
code
is
readable
.
Inspection
using
Diagnostic
Chart
for
Warning
Light
Failure
.

Record
all
trouble
codes
.
Only
the
start
code
is
issued
.

Trouble
codes
are
issued
.

Perform
diagnostics
in
accordance
with
trouble
code
.

Trouble
code
I
Repair
.
designated
.

Clear
memory
.

I
INSPECTION
MODE
I

I
CALLING
UPA
TROUBLE
CODE
.

Only
the
star
t
code
is
issued
.

CONFIRMATION
TEST

END

Inspection
using
General
Diagnostics
chart
.

B4M
1051
A

CAUTION
:

Remove
foreign
matter
(dust,
water,
etc
.)
from
the

ABSCM&H/U
connector
during
removal
and
installation
.

NOTE
:

e
To
check
harness
for
broken
wires
or
short
circuits,

shake
it
while
holding
it
or
the
connector
.

*
When
ABS
warning
light
illuminates,
read
and
record

trouble
code
indicated
by
ABS
warning
light
.

11

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

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

B
:
TROUBLE
CODE
21
(FRONT
RH)

C
:
TROUBLE
CODE
23
(FRONT
LH)

D
:
TROUBLE
CODE
25
(REAR
RH)

E
:
TROUBLE
CODE
27
(REAR
LH)

-
ABNORMAL
ABS
SENSOR
(OPEN
CIRCUIT

OR
INPUT
VOLTAGE
TOO
HIGH)
-

DIAGNOSIS
:

"
Faulty
ABS
sensor
(Broken
wire,
input
voltage
too
high)

Faulty
harness
connector

TROUBLE
SYMPTOM
:

*
ABS
does
notoperate
.

WIRING
DIAGRAM
:

F49

ABS
control
module
and
hydraulic
control
unit

OUTBACK
with
steproof
model
B~5
O
O
P8
OO
Ft
100

1
3
1
10
70969
4
78

Rear
ABS
sensor
LH

RearABS
sensor
RH

r----------------
I
OUTBACK
with
steproof
model
I
I
Q
I

RearABS-C~l
sensor
LH

I
I

RearABS
j
~--m
sensor
RH

I
Q
I
------------J

Front
ABS
sensorLH

Front
ABS
sensor
RH

f{9

1
345678911112131415
1116
1
17
1
18
1
19
1
2
0
2
122
4
26
7
1
28
1
29
130131
1

B4M1238

32

4-4d
[TSFO]
BRAKES
[ABS
5
.31
TYPE]
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

F
:
TROUBLE
CODE
22
(FRONT
RH)

G
:
TROUBLE
CODE
24
(FRONT
LH)

H
:
TROUBLE
CODE
26
(REAR
RH)

I
:
TROUBLE
CODE
28
(REAR
LH)

-
ABNORMAL
ABS
SENSOR
(ABNORMAL
ABS
SENSOR
SIGNAL)
-

DIAGNOSIS
:

"
Faulty
ABS
sensor
signal
(noise,
irregular
signal,
etc
.)

Faulty
harness/connector

TROUBLE
SYMPTOM
:

9
ABS
does
not
operate
.

WIRING
DIAGRAM
:

f49

ABS
control
module
and
hydraulic
control
unit

OUTBACK
withstep
OO
roof
model
815
86

LL
]
Iwl

_-^
B15

~
B~~
_____===_-r
m--~~
Front
ABS
~
sensorLH

----
---
-----------
Front
ABS
-
-
----------
[Z1-1
~
sensor
RH

Twisted
~-
wire
F1Pt
OO

Twisted
wire
~
::M

Ft
100

1
3
1
10
4
78

Rear
ABS
sensorLH

RearABS
sensor
RH

I
OUTBACK
withsteproof
model
I
I
~
I

RearABS
«7
sensor
LH

II

RearABS
j

BE
sensor
RH

L-
-
-
--
-
-
-
-
-
-
-
-
-
--
-

QD

1
1
~
131415
1
§
17181911011111211
14
1

J
116117118119120121
223
24
6
2718
2930
31

B4M1238

40

BRAKES
[ABS
5
.31
TYPE]
IT8117i
4-4d

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

814
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HlU
and
ABS
sensor?
<
Ref,
to

FOREWORD
[T3C1]
.*10
>

,rES
:
Repair
connector
.

No
:
Go
to
step8115
.

18115
1
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
is
the
cartelephone
orthe
wireless
transmit-

ter
properly
installed?

Go
to
step
8116
.

No
:
Properly
install
the
car
telephone
or
the
wireless

transmitter
.

6
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

Are
noise
sources
(such
as
an
antenna)

installed
near
the
sensor
harness?

8100

1
1
-
1
2
01
19
1
1
81
17
11
6
11
!
98
7
65432
1111
11

D

fl
-0
Q
0

B4M1244A

vES
:
Install
the
noise
sources
apart
from
the
sensor

harness
.

No
:
Go
to
step
8117
.

8117
CHECK
SHIELD
CIRCUIT
.

1)
Connect
all
connectors
.

2)
Measure
resistance
between
shield
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
22
I
(8100)
No
.
11
-
Chassis
ground
:

Trouble
code
24
/
(8100)
No
.
2
-
Chassis
ground
:

Trouble
code
26
/
Go
to
step
8118
.

Trouble
code
28
/
Go
to
step
8118
.

CHECK
;
Is
the
resistance
less
than
0
.5
0?

Go
to
step
8118
.

No
:
Repair
shield
harness
.

45

BRAKES
[ABS
5
.31
TYPE]
Rsss1
4-4d

8
.
DiagnosticsChart
with
Trouble
Code
by
ABS
Warning,Light

M

1
23
45
6
718
1101111121131141151
1116117118119121211
'9t,-73
24-
2526
71281203*
01311111

B4M1243A

8S1
CHECK
GROUND
CIRCUIT
OF
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Measure
resistance
between
ABSCM&H/U
and
chassis

ground
.

Connector
&
terminal

(F49)
No
.
23
-
Chassis
ground
:

CHECK
;
Is
the
resistance
less
than
0
.5
0?
Go
to
step
8S2
.

No
:
Repair
ABSCM&H/U
ground
harness
.

8S2
CHECKPOOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

battery,ignition
switch
and
ABSCM&HlU?

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

vES
:
Repair
connector
.

No
:
Go
tostep
8S3
.

8S3
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
thecar
telephone
orthe
wireless
transmit-

ter
properly
installed?

,rES
:
Go
to
step
8S4
.

No
:
Properly
install
thecar
telephone
or
the
wireless

transmitter
.

8S4
CHECK
SOURCES
OFSIGNAL
NOISE
.

CHECK
;
Are
noise
sources
(such
asan
antenna)

installed
near
the
sensorharness?

,rES
:
Install
the
noise
sources
apartfrom
the
sensor

harness
.

No
:
Go
to
step
8S5
.

8S5
I
CHECK
ABSCM&HIU
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
out
the
trouble
code
.

CHECK
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

Replace
ABSCM&H/U
.

No
:
Go
to
step
8S6
.

63

4-4d
[T1
0A01
BRAKES
[ABS
5
.3i
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

10
.
Diagnostics
Chart
with
Select

Monitor

I
TROUBLE
OCCURS
.I

A
:
BASIC
DIAGNOSTIC
CHART

Is
Select
Monitor
available?
No

Yes

Ask
the
customer
when
and
how
the
trouble
occurred
using
interview
check
list
.

I
PRE-INSPECTION
I

Use
select
monitor,
retrieve
trouble
code
in
function
mode
FBiand
record
the
code
.

Perform
diagnostics
in
accordance
with
trouble
code
.
No
corresponding
trouble
code

Diagnostics
Chart
for
On-board
Diagnosis
System

Inspection
using
General
Diagnostics
chart

Trouble
code
is
designated
or
ABS
warning
light
constantly
remains
on
.

Repair
.

Clear
memory
.

I
INSPECTION
MODE
I

Use
select
monitor,
retrieve
trouble
code
in
function
model
FB1and
recordthe
code
.

No
trouble
code
is
designated
and
ABS
warning
light
goes
out
after
turning
on
.

I
CONFIRMATION
TEST
I

END

B4M1076A

CAUTION
:

Remove
foreign
matter
(dust,
water,
etc
.)
from
the

ABSCM&H/U
connector
during
removal
and
installation
.

NOTE
:

To
check
harness
for
broken
wires
or
short
circuits,
shake

it
while
holding
it
or
the
connector
.

102

BRAKES
[ABS
5
.31
TYPE]
[T10H0]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

DIAGNOSIS
:

"
Faulty
ABS
sensor(Broken
wire,
input
voltage
too
high)

Faulty
harness
connector

TROUBLE
SYMPTOM
:

9
ABS
does
not
operate
.

WIRING
DIAGRAM
:

F49

ABS
control
module
and
hydraulic
control
unit

OUTBACK
with
step
roof
model
Bt5
O

O
P8
O
P8

[ft
LwI

O
8100

815

Front
ABS
sensorLH

Front
ABS
sensor
RH
Twisted
wire
Ft
Pt
OO

WEB
i
Twisted
wire

W
EB-

(2D

F1
100

F
172
-1
F3
1
F
U=
10
1
4
15161
7
1
8

Rear
ABS
sensor
LH

RearABS
sensor
RH

t
OUTBACK
with
step
roof
model
III

Rear
ABS
sensor
LH

j
~
RearABS
j
7
sensor
RH

I
~
I
L---------------J

F49

12345678910111131415
1
16
1
17
1
18
1
19
111
202122
23
4
252627
1
28
1
29
001
31

B4M1238

113

BRAKES
[ABS
5
.3i
TYPE]
[T10L0]4-4d

10
.
Diagnostics
Chart
withSelect
Monitor

DIAGNOSIS
:

"
Faulty
ABS
sensor
signal
(noise,
irregular
signal,
etc
.)

Faulty
harness/connector

TROUBLE
SYMPTOM
:

e
ABS
does
not
operate
.

WIRING
DIAGRAM
:

9

ABS
control
module
and
hydraulic
control
unit

Twisted
wire
Ft
0

8100

815

Front
ASS
sensorLH

RearABS
sensorLH
Rear
ABS
sensor
RH

r----------------
1
OUTBACK
with
step
roof
model
I

I
Q
I

RearABS
7
sensor
LH
I
~
III
j
~
Rear
ASS
j
sensor
RH

I
O
I
L---
.
.
.---------J

OUTBACK
with
steproof
model
B~5
O

OOOO
fl

(i~]
DO`]
478
1
10

F49

1234567891011131415
1617181920
1
212
23
4
5
26
218930
13
1
1

B4M1238

Front
ASS
sensor
RH

123

4-4d
[T1
01-111
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withselect
monitor

FR
(F05)

30
km/h

B4M0922

(SELECT

CHECK
OUTPUT
MONITOR

F
ABS
SENSOR
USING

Read
the
ABS
sensor
output
corresponding
to
the
faulty

system
in
the
select
monitor
function
mode
.

NOTE
:

The
select
monitor
display
shows
that
the
front
right
wheel

is
rotating
at
30
km/h
.

CHECK
:
Does
the
speed
indicated
on
the
display

change
in
response
to
the
speedometer

reading
during
acceleration/deceleration

when
the
steering
wheel
is
in
the
straight-

ahead
position?

Go
to
step
1012
.

No
:
Go
to
step
10L8
.

I1011-2
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HfU
and
ABS
sensor?

,rES
:
Repair
connector
.

No
:
Go
to
step
10L3
.

10L3
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
the
cartelephone
orthe
wireless
transmit-

ter
properly
installed?

Go
to
step
10L4
.

No
:
Properly
install
the
car
telephone
or
the
wireless

transmitter
.

1
10L4
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

Are
noise
sources
(such
as
an
antenna)

installed
near
the
sensorharness?

Install
the
noise
sources
apartfromthe
sensor

harness
.

No
:
Go
to
step
10L5
.

124

4-4d
[TioL2y1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
monitor

8100

98
7161
F
5T43
J2~
.
1~2
191
7
6
5141
1
11
1

D

S2
0
.
ij

B4M
1244A

1021
I
CHECKPOOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HlU
and
ABS
sensor?
<
Ref
.
to

FOREWORD
[T3C1]
.*10
>

,res
:
Repair
connector
.

No
:
Go
to
step
10L22
.

1022
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
the
cartelephone
orthewireless
transmit-
ter
properly
installed?

,res
:
Go
to
step
10L23
.

No
:
Properly
install
the
car
telephone
or
the
wireless

transmitter
.

1
10L23
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Are
noise
sources
(such
as
an
antenna)

installed
near
the
sensorharness?

Install
the
noise
sources
apartfrom
the
sensor

harness
.

No
:
Go
tostep
10L24
.

10L24
CHECK
SHIELDCIRCUIT
.

1)
Connect
all
connectors
.

2)
Measure
resistance
between
shield
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
22
I
(8100)
No
.
11
-
Chassis
ground
:

Trouble
code
24
/
(8100)
No
.
2
-
Chassis
ground
:

Trouble
code
26
l
Go
to
step
10L25
.

Trouble
code
28
/
Go
to
step
10L25
.

CHECK
:
Is
the
resistance
less
than0
.5
S2?

vES
:
Go
tostep
10L25
.

No
:
Repair
shield
harness
.

130