1997 SUBARU LEGACY ignition

BRAKES
[ABS
5
.31
TYPE]
[T10W4]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

-
%mnnnur

B4M0430

[1
_
Owl
CHECKGENERATOR
.

1)
Start
engine
.

2)
Idling
after
warm-up
.

3)
Measure
voltage
between
generator
B
terminal
and

chassis
ground
.

Terminal

Generator
B
terminal
-
Chassis
ground
:

CHECK
:
Is
thevoltage
between
10
V
and
15
V?

U
:
Go
tostep
10W2
.

No
:
Repair
generator
.

1OW2
CHECK
BATTERY
TERMINAL
.

Turn
ignition
switch
to
OFF
.

Are
the
positive
and
negative
battery
termi-

nals
tightly
clamped?

0
:
Go
to
step
10W3
.

No
:
Tighten
the
clamp
of
terminal
.

(CHECK
INPUT
VOLTAGE
OF
ABSCM&H/U
.

F49

1
1
2131415
1
6
1
7
1
89
1
10
1
11
1
12
1
13
1
14
11
5
1
16
71819
2
1
23242526
728293031
1

'L
L
a
84M1243A

1)
Disconnect
connector
from
ABSCM&H/U
.

2)
Run
the
engine
at
idle
.

3)
Measure
voltage
between
ABSCM&H/U
connector
and

chassis
ground
.

Connector
&
terminal

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

CHECK
:
Is
thevoltage
between
10
V
and
15
V?

,rES
:
Go
to
step
10W4
.

No
:
Repair
harness
connector
between
battery,
igni-

tion
switch
and
ABSCM&H/U
.

10W4
CHECK
GROUND
CIRCUIT
OF
ABSCM&HIU
.

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
the
resistance
less
than
0
.5
SZ?

,rES
:
Go
tostep
10111115
.

No
:
Repair
ABSCM&H/U
ground
harness
.

151

BRAKES
[ABS
5
.31
TYPE]
[T1
0X3]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

l

o

-
-
;mnnwr

B4M0430

F49

I,vC~j
84M
1234A
I

10X1
CHECKGENERATOR
.

1)
Start
engine
.

2)
Idling
after
warm-up
.

3)
Measure
voltage
between
generator
B
terminal
and

chassis
ground
.

Terminal

Generator
B
terminal
-
Chassis
ground
:

K
;
Is
the
voltage
between
10
V
and
17V?

~,rES~
:
Go
tostep
10X2
.

No
:
Repair
generator
.

10X2
I
CHECK
BATTERY
TERMINAL
.

Turn
ignition
switch
to
OFF
.

CHECK
;
Are
the
positive
and
negative
battery
termi-

nals
tightly
clamped?

Go
to,
step
10X3
.

No
:
Tighten
the
clamp
of
terminal
.

10X3
I
CHECK
INPUT
VOLTAGEOF
ABSCM&H/U
.

1)
Disconnect
connector
from
ABSCM&H/U
.

2)
Run
the
engine
at
idle
.

3)
Measure
voltage
between
ABSCM&H/U
connector
and

chassis
ground
.

Connector
&
terminal

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

CHECK
:
Is
thevoltage
between
10
V
and
17V?

,rES
:
Go
to
step
10X4
.

No
:
Repair
harness
connector
between
battery,
igni-

tion
switch
and
ABSCM&H/U
.

155

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

10
.
Diagnostics
Chart
withSelect
Monitor

(~4~

a
11
6M
8119120121
242526
7
8293031
1

SL
B4M1243A

10X4
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
the
resistance
less
than
0
.5
0?

0
:
Go
to
step
10X5
.

No
:
Repair
ABSCM&H/U
ground
harness
.

10X5
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.
I

Is
there
poor
contact
in
connectors
between

generator,
battery
and
ABSCM&HlU?
<
Ref
.

to
FOREWORD
[T3C1]
.*10
>

Repair
connector
.

No
:
Go
to
step
10X6
.

10X6
CHECK
ABSCM&H/U
.

1)
Connect
all
connectors
.

2}
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
out
the
trouble
code
.

~HEC~c
:
Is
the
same
trouble
code
as
in
the
current

diagnosis
still
being
output?

Replace
ABSCM&H/U
.

No
:
Go
to
step
10X7
.

10X7
CHECK
ANY

I
APPEARANCE
.

O
THER
TROUBLE
CODES

CHECK
:
Are
other
trouble
codes
being
output?

0
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

156

BRAKES
[ABS
5
.31
TYPE]
[T10Y3]
4-4d

10
.
Diagnostics
Chart
withSelect
Monitor

1997
(F00)

AB
S
4WD
"
AT

H4M
1117'

B56

110191817
1
6
5
43
2
1
0
1
91
1
0
1
71
1
1
4i
1
1211

0
L
V

84M
1251
A

1
CHECK

I
USING
SELECT
.

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

2)
Read
the
select
monitor
display
.

CHECK
:
Is
an
ABSCM&HI
U
for
AT
model
installed
on

a
MT
model?

vES
:
Replace
ABSCM&H/U
.

No
:
Go
tostep
10Y2
.
1
10Y2
I
CHECK
GROUND
SHORT
OF
HARNESS
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
two
connectors
from
TCM
.

3)
Disconnect
connector
from
ABSCM&H/U
.

4)
Measure
resistance
between
ABSCM&H/U
connector

and
chassis
ground
.

Connector
&
terminal

(F49)
No
.
3
-
Chassis
ground
:

CHECK
:
Is
the
resistance
more
than
1
1140?

,rES
:
Go
to
step
10Y3
.

No
:
Repair
harness
between
TCM
and
ABSCM&H/U
.

10Y3
CHECK
TCM
.

1)
Connect
all
connectors
to
TCM
.

2)
Turn
ignition
switch
to
ON
.

3)
Measure
voltage
between
TCM
connector
terminal
and

chassis
ground
.

Connector
&
terminal

(B55)
No
.
5
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
thevoltage
between
10
V
and
15
V?

Go
to
step
10Y5
.

No
:
Go
tostep
10Y4
.

159

BRAKES
[ABS
5
.31
TYPE]
[T1
0Z2]
4-4d
10
.
Diagnostics
Chart
withSelect
Monitor

1021
CHECK
BATTERY
SHORT
OF
HARNESS

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
two
connectors
from
AT
control
module
.

3)
Disconnect
connector
from
ABSCM&H/U
.

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

chassis
ground
.

Connector
&
terminal

(F49)
No
.
3
(+)
-
Chassis
ground
(-)
:

CHECK
:
Is
the
voltage
less
than
1
V?

,rES
:
Go
to
step
1022
.

No
:
Repair
harness
between
AT
control
module
and

ABSCM&H/U
.

CHECK
BATTERY
SHORT
OFHARNESS
.t

1)
Turn
ignition
switch
to
ON
.

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

chassis
ground
.

Connector
&
terminal

(F49)
No
.
3
(+)
-
Chassis
ground
(-)
:

CHECK
:
Is
the
voltage
less
than
1
V?

Go
to
step
1023
.

No
:
Repair
harness
between
AT
control
module
and

ABSCM&H/U
.

163

4-4d
[T1oza1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

I
10Z3
I
CHECK
OPEN
CIRCUIT
OF
HARNESS
.I

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
all
connectors
to
TCM
.

3)
Turn
ignition
switch
to
ON
.

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

chassis
ground
.

Connector
&
terminal

(F49)
No
.
3
(+)
-
Chassis
ground
()
:

(F49)
No
.
31
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
thevoltage
between
10
V
and
13
V?

Go
to
step
1024
.

No
:
Repair
harness/connector
between
TCM
and

ABSCM&H/U
.
1
10Z4
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.I

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connectors
between

A
T
control
module
and
ABSCM&H/U?
<
Ref
.

to
FOREWORD
(T3C1]
.*10
>

,res
:
Repair
connector
.

No
:
Go
to
step
1025
.

diagnosis
still
being
output?

0
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
1026
.

10Z5
I
CHECK
ABSCM&HIU
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
outthe
trouble
code
.

CHECK
:
!s
the
same
trouble
code
as
in
the
current

1026
CHECK
ANY
OTHER
TROUBLE
CODES

APPEARANCE
.

CHECK
:
Are
other
trouble
codes
being
output?

.rES
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

164

BRAKES
[ABS
5
.3i
TYPE]
[T10AA3]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

F49

1
1
2
1
3
1415
1
6
1
7
1
8
9
01112131415
~I61718192
21
23
4
1
2526
1281261301311

LeRVI
B4M1254A

a

112131415161718
9l101111121131141151
11611711811912
1_~23
1
242526
728293031

D
n

SL
f
B4M1243A

1
10AA1
I
CHECK
INPUT
VOLTAGE
OF
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Run
the
engine
atidle
.

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

chassis
ground
.

Connector
&
terminal

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

(F49)
No
.
24
(+)
-
Chassis
ground
(-)
:

CHECK
:
Is
thevoltage
between
10
V
and
15
V?

,rES
:
GO
t0
step
10AA2
.

No
:
Repair
harness
connector
between
battery
and

ABSCM&H/U
.
I
10AA2
I
CHECK
GROUND
CIRCUIT
OF
ABSCM&HIU
.

1)
Turn
ignition
switchto
OFF
.

2)
Measure
resistance
between
ABSCM&H/U
connector

and
chassis
ground
.

Connector
&
terminal

(F49)
No
.
23
-
Chassis
ground
:

CHECK
:
Is
the
resistance
less
than
0
.5
SZ?

0
:
Go
to
step
10AA3
.

No
:
Repair
ABSCM&H/U
ground
harness
.
I
10AA3
I
CHECKPOOR
CONTACT
IN
CONNECTORS
.
I

CHECK
:
Is
there
poor
contact
in
connectors
between

generator,
battery
and
ABSCM&HlU?
<
Ref
.

to
FOREWORD
[T3C1]
.*10>

vES
:
Repair
connector
.

No
:
Go
tostep
10AA4
.

167

BRAKES
[ABS
5,3i
TYPE]
[T10AC3]
4-4d

10
.
DiagnosticsChart
with
Select
Monitor

(~4~)

11
21
3141516171819
110111112113114115
1110171101912012112-
128129301311
23
1
24
1
25
1
26

v
BW
1256A

F49

1
234
5
6
7
8
9
101112131415
61
1819
2
21
26
7
8293
31
23
2425
1

D
n

]L

B4M1257A

10AC1
CHECK
INPUT
VOLTAGEOF
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Turn
ignition
switch
to
ON
.

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

chassis
ground
.

Connector
&
terminal

(F49)
No
.
25
(+)
-
Chassis
ground
(
)
:

CHECK
;
Is
the
voltage
between
10
V
and
13
V?

Go
to
step
10AC2
.

No
:
Repair
harness/connector
between
battery
and

ABSCM&H/U
and
check
fuse
SBF6
.
1
10AC2
I
CHECK
GROUND
CIRCUIT
OF
MOTOR
.
I

1)
Turn
ignition
switch
to
OFF
.

2)
Measure
resistance
between
ABSCM&H/U
connector

and
chassis
ground
.

Connector
&
terminal

(F49)
No
.
26
-
Chassis
ground
:

CHECK
:
Is
theresistance
less
than0
.5
S2?

,rES
:
Go
to
step
10AC3
.

No
:
Repair
ABSCM&H/U
ground
harness
.

1
10AC3
I
CHECK
MOTOR
OPERATION
.I

Operate
tine
check
sequence
.
<
Ref
.
to
4-4
[W25D1
].
>

NOTE
:

Use
the
diagnosis
connector
to
operate
the
sequence

control
.

Can
motor
revolution
noise
(buzz)
be
heard

when
carrying
out
the
check
sequence?

Go
to
step
10AC4
.

No
:
Replace
ABSCM&H1U
.

173