1997 SUBARU LEGACY ESP

BRAKES
[ABS
5
.31
TYPE]
[T10AB4]
4-4d

10
.
Diagnostics
Chart
withSelect
Monitor

00000
E9
c]['~oo
0000000
000000
1313109
130
e

`"/
II
I
F
I
`'B4M1272A

10AB1
CHECK
VALVERELAY
IN
ABSCM&H/U
.

Measure
resistance
between
ABSCM&H/U
terminals
.

Terminals

No
.
23
(+)
-
No
.
24
(
)
:

CHECK
:
Is
theresistance
more
than
1
MS2?

vES
:
Go
to
step
10AB2
.

No
:
Replace
ABSCM&H/U
.
1
10AB2
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Is
there
poor
contact
in
connectors
between

generator,battery
and
ABSCM&HIU?
<
Ref
.

to
FOREWORD
[T3C1]
.*10>

vES
:
Repair
connector
.

No
:
Go
to
step
10AB3
.

10AB3
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
thecurrent

diagnosis
still
being
output?

0
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AB4
.

CODES
I10AB4
CHECK
ANY

IAPPEARANCE
.

O
THER
TROUBLE
CODES

CHECK
;
Are
other
trouble
codes
being
output?

Proceed
withthe
diagnosis
corresponding
to
the
trouble
code
.

No
:
A
temporary
poor
contact
.

171

4-4d
[T1oaca1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

10AC4
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connector
between

hydraclic
unit,
relay
boxand
ABSCM&HlU?

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

ves
:
Repair
connector
.

No
:
Go
to
step
10AC5
.
1
10AC5
I
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
thecurrent

diagnosis
still
being
output?

YES
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AC6
.

10AC6
I
CHECK

APPEARANCE

.THER
TROUBLE
CODES

Are
other
trouble
codes
being
output?

Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporarypoor
contact
.

174

BRAKES
[ABS
5
.31
TYPE]
IT10AD5]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

ABSCM&H/U

D
II
f"
---
oo~

i
B4M1270A

10AD1
CHECK
MOTOR
RELAY
IN
ABSCM&H/U
.

Measure
resistance
between
ABSCM&H/U
terminals
.

Terminals

No
.
25
-
No
.
26
:

CHECK
.
:
Is
the
resistance
more
than
1
MSZ?

.
Go
to
step
10AD2
.

No
:
Replace
ABSCM&H/U
.

10AD2
CHECK
MOTOR
OPERATION
.

Operate
the
sequence
control
.
<
Ref
.
to
4-4
[W25D1
]
.
>

CHECK
;
Can
motor
revolution
noise
(buzz)
be
heard

when
carrying
out
the
sequence
control?

Go
to
step
10AD3
.

No
:
Replace
ABSCM&H/U
.
1
10AD3
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.I

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connector
between

hydraulic
unit,
relay
box
and
ABSCM&HlU?

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

,rss
:
Repair
connector
.

No
:
Go
to
step
10AD4
.

1
10AD4
I
CHECK
ABSCM&H/U
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
outthe
trouble
code
.

diagnosis
stiff
being
output?

YES
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AD5
.

CHECK
:
is
the
same
trouble
code
as
in
the
current

10AD5
CHECK
ANY
OTHER
TROUBLE
CODES

1APPEARANCE
.
I

Eck
&
-)
:
Are
other
trouble
codes
being
output?

Proceed
with
thediagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

177

BRAKES
[ABS
5
.31
TYPE]
[T10AE8]
4-4d

10
.
DiagnosticsChart
with
Select
Monitor

1
10AE6
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connector
between

generator,
battery
and
ABSCM&HIU?
<
Ref
.

to
FOREWORD
[T3C1]
.*10
>

0
:
Repair
connector
.

No
:
Go
to
step
10AE7
.
1
10AE7
J
CHECK
ABSCM&HlU
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
out
the
trouble
code
.

K
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

,rES
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AE8
.

10AE8
CHECK
ANY
OTHER
TROUBLE
CODES

APPEARANCE
.

CHECK
:
Are
other
trouble
codes
being
output?

Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

181

4-4d
fr1oAFa1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

10AF4I
CHECK
OPEN
CIRCUIT
IN
HARNESS
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Depress
brakepedal
.

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

chassis
ground
.

Connector
&
terminal

(F49)
No
.
2
-
Chassis
ground
:

CHECK
:
Is
thevoltage
between
10
V
and
15
V?

,rES
:
Go
tostep
10AF5
.

No
:
Repair
harness
between
stop
light
switch
and

ABSCM&H/U
connector
.

1
10AF5
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connector
between

stop
light
switch
and
ABSCM&HIU?
<
Ref,
to

FOREWORD
[T3C1]
.*10
>

vES
:
Repair
connector
.

No
:
Go
tostep
10AF6
.

10AF6
I
CHECK
ABSCM&H/U
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
out
the
trouble
code
.

Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

Replace
ABSCM&H/U
.

No
:
Go
to
step
10AF7
.

I10AF7
CHECK
ANY

1APPEARANCE

.THER
TROUBLE
CODES

CHECK
:
Are
other
trouble
codes
being
output?

Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

184

BRAKES
[ABS
5
.31
TYPE]
[T10AG5]
4-4d

10
.
DiagnosticsChart
with
Select
Monitor

1997
(F00)

ABS
4WD
"
AT

H4M
11171

G-SENS
(F
10)

2
.30
V

sannos271

10AG1
HECK
I
US
G
SE
ECT,MONT
OR

OF
ABSCM&H/U

1)
Press
[F],
[0]
and
[0]
on
the
select
monitor
.

2)
Read
the
select
monitor
display
.

CH~K
:
Is
an
ABSCM&HlU
for
4WD
model
installed

on
a
FWD
model?

Replace
ABSCM&H/U
.

No
:
Go
to
step
10AG2
.

I10AG2
CHECK
OUTPUT

I
SELECT
MONITOR

F
G
SENSOR
USING

1)
Press
[F],
[1]
and
[0]
on
the
select
monitor
.

2)
Read
the
select
monitor
display
.

K
:
Is
theindicated
reading
between
2
.1
and
2
.5

V
when
the
G
sensor
is
in
horizontal
posi-

tion?

,rE$
:
Go
to
step
10AG3
.

Go
to
step
10AG6
.
I
10AG3
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connector
between

ABSCM&HIU
and
G
sensor?
<
Ref
.
to
FORE-

WORD
[T3C1]
.*10
>

Repair
connector
.

No
:
Go
tostep
10AG4
.

10AG4
CHECK
ABSCM&HlU
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
out
the
trouble
code
.

c
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

Replace
ABSCM&H1U
.

No
:
Go
to
step
i0AG5
.

10AG5
CHECK
ANY
I
APPEARANCE

.THER
TROUBLE
CODES

CHECK
:
Are
other
trouble
codes
being
output?

Proceed
withthe
diagnosis
corresponding
to
the

trouble
code
.

A
temporary
poor
contact
.

187

BRAKES
[ABS
5
.31
TYPE][T10AG14]
4-4d

10
.
Diagnostics
Chart
withSelect
Monitor

F49

1
23456
7
89
07112131415
1617118119120121122l--,
2
1
3
2425
2630

0

S2
B4M1261A

10AG11
I
PUT
HARNESS
A
DuGROUND
HARNESS
.T

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Measure
resistance
between
ABSCM&H/U
connector

terminals
.

Connector
&
terminal

(F49)
No
.
30
-
No
.
28
:

CHECK
:
Is
theresistance
between
4
.3
and
4
.9
kSZ?

Go
to
step
10AG12
.

No
:
Repair
harness/connector
between
G
sensor
and

ABSCM&H/U
.
I
10AG12
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Is
there
poor
contact
in
connector
between

ABSCM&HlU
and
G
sensor?
<
ReL
to
FORE-

WORD
[T3C1].*T
0
>

Repair
connector
.

No
:
Go
to
step
10AG13
.
f
10AG13
I
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
10AG14
.

10AG14
CHECK
ANY
OTHER
TROUBLE
CODES

APPEARANCE
.

CHECK
:
Are
other
trouble
codes
being
output?

0
:
Proceed
with
thediagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

189

4-4d
R1oaG2o1
BRAKES
[ABS
5
.31
TYPE]
10
.
Diagnostics
Chad
withSelect
Monitor

0

Front

B4M0918A

I
10AG20
I
CHECK
G
SENSOR
.

Measure
voltage
between
G
sensor
connector
terminals
.

Connector
&
terminal
(P71)
No
.
2
(+)
-
No
.
1(
)
:

CHECK
:
Is
the
voltage
between
0
.5
and
0
.9
V
when
G

sensor
is
inclined
backwards
to
90°?

C,rES~
:
Go
to
step
10AG21
.

No
:
Replace
G
sensor
.
1
10AG21
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connector
between

ABSCM&Ht
U
and
G
sensor?
<
Ref
.
to
FORE-

WORD
[T3C1],*10
>

Repair
connector
.

No
:
Go
to
step
10AG22
.

I
10AG22
I
CHECK
ABSCM&H/U
.I

~
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

0
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AG23
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
outthe
trouble
code
.

10AG23
I
O
THER
TROUBLE
CODES

APPEARANCE
.

cK
:
Are
other
trouble
codes
being
output?

Proceed
with
thediagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

192