Chassis SUBARU LEGACY 1997 Service Owner's Guide

4-4d
[T1ocs1
BRAKES
[ABS
5
.3i
TYPE]

10
.
DiagnosticsChart
with
Select
Monitor

F49

1
2
3L415161718
9
1
10
1
11
1
12
1
13
1
14
1
15
6171819
221
232425
26
I
U
71
28121301311

D
~

SC
B4M
1243A

I
10C5
I
CHECK
POWER
SUPPLY
OF
ABSCM&H/U
.

1)
Disconnect
connectorfrom
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?

,rES
:
Go
to
step
10C6
.

No
:
Repair
ABSCM&H/U
power
supply
circuit
.
I
10C6
I
CHECK
GROUND
CIRCUIT
OF
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Measure
resistance
between
ABSCM&H/U
connector

and
chassis
ground
.

Connector
&
terminal

(F49)
No
.
23
-
Chassis
ground
:

CHECK
;
Is
theresistance
less
than0
.5
0?

Repair
harness/connector
between
ABSCM&H/U

and
select
monitor
.

No
:
Go
to
step
10C7
.

106

BRAKES
[ABS
5
.31
TYPE]
[T10D5]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

00000
~
oooii
00000
n
0000^JO~001
'00

(III
`'B4M1237A

B4M1236A
I

F2

9
1817161
54
3
2
l
9
B
7
6543
211
~

84M
1236A

1ODII
I
CHECK
WIRING
HARNESS
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
(F2)
from
connector
(B100)
.

3)
Turn
ignition
switch
to
ON
.

CHECK
:
Does
the
ABS
warning
light
remain
off?

Go
to
step
10132
.

No
:
Repair
front
wiring
harness
.

10D2
CHECK
PROJECTION
AT
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Check
for
broken
projection
at
the
ABSCM&H/U
termi-

nal
.

CHECK
:
Are
the
projection
broken?

Go
to
step
103
.

No
:
Replace
ABSCM&H/U
.
1
10D3
I
CHECKABSCM&H/U
.

Measure
resistance
between
ABSCM&H/U
terminals
.

Terminals

No
.
21
-
No
.
23
:

!s
the
resistance
more
than
1
MS2?

Go
to
step
1101134
.

No
:
Replace
valve
relay
.
1
10134
1
CHECK
WIRING
HARNESS
.
I

Measure
resistance
between
connector
(F2)
and
chassis

ground
.

Connector
&
terminal

(F2)
No
.
9
-
Chassis
ground
:

is
the
resistance
less
than
0
.5
S2?

Go
to
step
10135
.

o
:
Repair
harness
.
1
10D5
I
CHECK
WIRING
HARNESS
.
I

1)
Connect
connector
to
ABSCM&H/U
.

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

sis
ground
.

Connector
&
terminal

(F2)
No
.
9
-
Chassis
ground
:

Is
the
resistance
more
than
1
mil?

Go
tostep
10D6
.

Repair
harness
.

109

F2
.

4-4d
ITyoNS1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

Except
OUTBACK
model

1
2

D

84M0806E

OUTBACK
model

Front
Rear

zt

D

B4M
1036C

Except
OUTBACK
model

1
2

0

-V+

B4M0807E

OUTBACK
model

Front
Rear

1
22
1

D

_v+
-_
B4M
1037C
10H8
CHECK
ANY

I
APPEARANCE

.THER
TROUBLE
CODES

CHECK
;
Are
other
trouble
codes
being
output?

vES
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporarypoor
contact
.

NOTE
:

Check
harness
and
connectors
between
ABSCM&H/U

and
ABS
sensor
.

10H9
CHECK
ABS
SENSOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABS
sensor
.

3)
Measure
resistanceof
ABS
sensor
connector
terminals
.

Terminal

Front
RH
No
.
1
-
No
.
2
:

Front
LHNo
.
1
-
No
.
2
:

Rear
RH
No
.
1
-
No
.
2
:

Rear
LH
No
.
1
-
No
.
2
:

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

~
:
Go
to
step
10H10
.

No
:
Replace
ABS
sensor
.

10H10
CHECK
BATTERY
SHORT
OF
ABS
SENSOR
.

1)
Disconnect
connector
from
ABSCM&H/U
.

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?

Go
to
step
10H11
.

No
:
Replace
ABS
sensor
.

116

BRAKES
[ABS
5
.3i
TYPE]
[710H12]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

Except
OUTBACK
model

1
2

0

L
EV
B4M0807E

OUTBACK
model

Front
hear

2
1

D

-
B4M1037C

11
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
.
i
(+)
-
Chassis
ground
(-)
:

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

CHECK
:
Is
the
voltage
less
than
1
V?

Go
to
step
10H72
.

No
:
Replace
ABS
sensor
.

2
CHECK

I
ABSCM&H
UNAND/ABSSENSOR
BETWEEN

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
I
(F49)
No
.
11
-
No
.
12
:

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

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

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

CHECK
;
Is
theresistance
between
0
.8
and
1
.2
kS2?

YES
:
Go
tostep
10H13
.

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

and
ABS
sensor
.

117

4-4d
[r1oHy3l
BRAKES
[ABS
5
.31
TYPE]
10
.
Diagnostics
Chart
withSelect
Monitor
F49

B4M1240A
I

I

-

r10H13
CHECK
BATTERY
SHORT
OFHARNESS
.

Measure
voltage
between
ABSCM&H/U
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
21
I
(F49)
No
.
11
(+)
-
Chassis
ground

Trouble
code
23
/
(F49)
No
.
9
(+)
-
Chassis
ground

Trouble
code
25
/
(F49)
No
.
14
(+)
-
Chassis
ground

l-)~

Trouble
code
27
/
(F49)
No
.
7
(+)
-
Chassis
ground

CHECK
:
Is
thevoltage
less
than
1
V?

,rES
:
Go
to
step
10H14
.

No
:
Repair
harness
between
ABSCM&H/U
and
ABS

sensor
.

I10H14
CHECK
BATTERY
SHORT
OFHARNESS
.

1)
Turn
ignition
switch
to
ON
.

2)
Measure
voltage
between
ABSCM&H/U
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
21
/
(F49)
No
.
11
(+)
-
Chassis
ground

Trouble
code
23
/
(F49)
No
.
9
(+)
-
Chassis
ground

(-)

Trouble
code
25
I
(F49)
No
.
14
(+)
-
Chassis
ground

Trouble
code
27
/
(F49)
No
.
7
(+)
-
Chassis
ground

(-)

CHECK
:
Is
thevoltage
less
than
1
V?

,rES
:
Go
to
step
10H15
.

No
:
Repair
harness
between
ABSCM&H/U
and
ABS

sensor
.
1
10H15
I
CHECK
INSTALLATION
OF
ABS
SENSOR
.

Tightening
torque
:

32
±
10
N~m
(3
.3
f
1
.0
kg-m,
24
f
7
ft-Ib)

CHECK
:
Are
the
ABS
sensor
installation
bolts
tight-

ened
securely?

,res
:
Go
to
step
10H16
.

No
:
Tighten
ABS
sensor
installation
bolts
securely
.

118

4-4d
[TloHis1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

Except
OUTBACK
model

iz

L
j
B4M0818E

OUTBACK
model

Front
Rear

1
2
2
1

D

84M1042C

1
10H19
I
CHECK
GROUND
SHORT
OF
ABS
SENSOR
.

1)
Turn
ignition
switchto
ON
.

2)
Measure
resistance
between
ABS
sensor
and
chassis

ground
.

Terminal

Front
RH
No
.
7
-
Chassis
ground
:

Front
LH
No
.
1
-
Chassis
ground
:

Rear
RH
No
.
1
-
Chassis
ground
:

Rear
LHNo
.
1
-
Chassis
ground
:

CHECK
:
is
the
resistance
more
than
1
Mn?

,mss
:
Go
to
step
10H20
.

No
:
Replace
ABS
sensor
and
ABSCM&H1U
.

[
MI-120
I
CHECK
GROUND
SHORT
OF
HARNESS
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
connector
to
ABS
sensor
.

3)
Measure
resistance
between
ABSCM&H/U
connector

terminal
and
chassis
ground
.

Connector
&
terminal

Trouble
code
21
l
(F49)
No
.
11
-
Chassis
ground
:

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

Trouble
code
25
l
(F49)
No,
14
-
Chassis
ground
:

Trouble
code
27
I
(F49)
No
.
7
-
Chassis
ground
:

CHECK
:
Is
the
resistance
more
than
1
1140?

,rES
:
Go
to
step
10H21
.

No
:
Repair
harness
between
ABSCM&H/U
and
ABS

sensor
.

And
replace
ABSCM&H/U
.

CHECKPOOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HlU
and
ABS
sensor?
<
Ref
.
to

FOREWORD
[T3C1]
.*10
>

vES
:
Repair
connector
.

No
:
Go
to
step
10H22
.

120

BRAKES
[ABS
5
.31
TYPE]
[r1oLs1
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

8100

1
91817161
5
1
4
1
3
21
2
191
76
51
11
11

J

84M1244A

10L5
CHECK
SHIELD
CIRCUIT
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
all
connectors
.

3)
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
10L6
.

Trouble
code
28
I
Go
to
step
10L6
.

CHECK
:
Is
the
resistance
less
than0
.5
S2?

Go
to
step
10L6
.

No
:
Repair
shield
harness
.

10L6
CHECK
ABSCM&H/U
.

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
the
current

diagnosis
still
being
output?

Replace
ABSCM&H/U
.

No
:
Go
to
step
10L7
.

10L7
CHECK
ANY
OTHER
TROUBLE
CODES

APPEARANCE
.

CHECK
:
Are
othertrouble
codes
being
output?

Proceed
withthe
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
noise
interference
.

11011-8
1
CHECK
INSTALLATION
OF
ABS
SENSOR
.
I

Tightening
torque
:

32
f
10
N~m
(3
.3
f
1
.0
kg-m,
24
f
7
ft-Ib)

Are
the
ABS
sensor
installation
bolts
tight-

ened
securely?

Go
to
step
10L9
.

Tighten
ABS
sensor
installation
bolts
securely
.

125

4-4d
[T1oLis1
BRAKES
[ABS
5
.3i
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

Except
OUTBACK
model

1
2

D

S2
B4M0806E

OUTBACK
model

Front
Rear

1
22
1

i
J

D

.0
0
.
B4M1036C

Except
OUTBACK
model

1
2

L
j
B4M0818E

OUTBACK
model

Front
Rear

1
22
1

D

134M
1042C

10L16
CHECK
RESISTANCE
OF
ABS
SENSOR
.

1)
Turn
ignition
switch
OFF
.

2)
Disconnect
connector
from
ABS
sensor
.

3)
Measure
resistance
between
ABS
sensor
connector
ter-

minals
.

Terminal

Front
RH
No
.
1
-
No
.
2
:

Front
LHNo
.
1
-
No
.
2
:

Rear
RHNo
.
1
-
No
.
2
:

Rear
LHNo
.
1
-
No
.
2
:

cF+ECK
:
Is
the
resistance
between
0
.8
and
1
.2
kS2?

Go
to
step
10L17
.

No
:
Replace
ABS
sensor
.

10L17
CHECK
GROUND
SHORT
OF
ABS
SENSOR
.

Measure
resistance
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
resistance
more
than1
MW

Go
to
step
10L18
.

No
:
Replace
ABS
sensor
.

128

BRAKES
[ABS
5
.31
TYPE]
[T10L20)
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

F49

1
1
2131415
1
6
1
7
1
89
101112131415
1
16
1
17
1
18
1
19
1
2
01
212
23
242526
La
728293031

-_
B4M
1243A
8
(CHECK
HARNESS/CONNECTOR
BETWEEN

ABSCM&H/U
ANDABS
SENSOR
.

1)
Connect
connector
to
ABS
sensor
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Measure
resistance
at
ABSCM&H/U
connector
termi-

nals
.

Connector
&
terminal

Trouble
code
22
l
(F49)
No
.
11
-
No
.
12
:

Trouble
code
24
/
(F49)
No
.
9
-
No
.
10
:

Trouble
code
26
/
(F49)
No
.
14
-
No
.
15
:

Trouble
code
28
/
(F49)
No
.
7
-
No
.
8
:

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

,rES
:
Go
to
step
10L19
.

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

and
ABS
sensor
.

1
10L19
I
CHECK
GROUND
SHORT
OF
HARNESS
.

Measure
resistance
between
ABSCM&H/U
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
22
l
(F49)
No
.
11
-
Chassis
ground
:

Trouble
code
24
I
(F49)
No
.
9
-
Chassis
ground
:

Trouble
code
26
l
(F49)
No
.
14
-
Chassis
ground
:

Trouble
code
28
1
(F49)
No
.
7
-
Chassis
ground
:

CHECK
:
Is
the
resistance
more
than
1
MSZ?

,rES
:
Go
to
step
10L20
.

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

and
ABS
sensor
.

10L20
CHECK
GROUND
CIRCUIT
OF
ABSCM&H/U
.

Measure
resistance
between
ABSCM&H/U
and
chassis

ground
.

Connector
&
terminal

(F49)
No
.
23
-
GND
:

CHECK
:
Is
the
resistance
less
than0
.5
SZ?

,rES
:
Go
to
step
10L21
.

No
:
Repair
ABSCM&H/U
ground
harness
.

129

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