SUBARU LEGACY 1997 Service Repair Manual

4-4d
[T1oYO]
BRAKES
[ABS
5
.3i
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

D
"
NEW
44
(FBI)

CCM
LINE

B4M0964

Y
:
TROUBLE
CODE
44
CCM
LINE

-
A
COMBINATION
OF
AT
CONTROL

ABNORMALS
-

DIAGNOSIS
:

9
Combination
of
AT
control
faults

TROUBLE
SYMPTOM
:

9
ABS
does
not
operate
.

WIRING
DIAGRAM
:

F49

ABS
control
module
and
hydraulic
control
unit

Fuse
IGN
sw
SBF-4
FL1
.25B

No
.
16

f45B61B54

m

JE
O

~--I
1
1
Transmission
control
module

3100
B56

834855B56

1
44
1
4
910
1/16191
1
011
1
1121
191101
1
11121131141
1A

F49

123456789101112131415

16Y8"2
1819
ZO2
1
2324
5
2627
9
30
31

8100

f45

1
10

B4M1247

158

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

4-4d
[T11ova1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

1
10Y4
I
CHECK
A7
.

1s
the
AT
functioning
normally?

0
:
Replace
TCM
.

No
:
Repair
AT
.

1
10Y5
I
CHECK
OPEN
CIRCUIT
OFHARNESS
.I

Measure
voltage
between
ABSCM&HlU
connector
and

chassis
ground
.

Connector
&
terminal

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

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

c~c~c
:
Is
thevoltage
more
than
10V?

Go
to
step
10Y6
.

No
:
Repair
harness/connector
between
AT
control

moduleand
ABSCM&H/U
.

10Y6
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Is
there
poor
contact
in
connectors
between

AT
control
module
and
ABSCM&HIU?
<
Ref
.

to
FOREWORD
[T3CI]
.*10
>

Repair
connector
.

Go
to
step
10Y7
.

I
10Yt
ICHECK
ABSCM&H/U
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3}
Perform
inspection
mode
.

4}
Read
outthe
trouble
code
.

O
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

0
:
Replace
ABSCM&H/U
.

o
:
Go
to
step
10Y8
.

10Y8
CHECK
ANY

I
APPEARANCE

.THER
TROUBLE
CODES

cK
:
Are
other
trouble
codes
being
output?

0
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

160

4-4d
[T1
0Z0]
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

D
"
NEW
44
(FBI)

CCM
OPEN

B4M0965

Z
:
TROUBLE
CODE
44
CCM
OPEN

-
A
COMBINATIONOF
AT
CONTROL

ABNORMALS
-

DIAGNOSIS
:

9
Combination
of
AT
control
faults

TROUBLE
SYMPTOM
:

9
ABS
does
notoperate
.

WIRING
DIAGRAM
:

Fuse
IGN-1sw
SBF-4
FL1
.258

F49

ABS
control
module
and
hydraulic
control
unit

No
.
16

J

Ei

E

Transmission
control
module

3D100

P1
1213149161
1213141bl6l/lb
1
/1
b19liull
11121
19110111114131141A
glIZ11311411511611
/JIM

(~D

r--l
112131415161718191101llll2ll-3Fl4Tl-51

q

11611711811912012122
23
24
25
26
27
1
28
1
29
1
30
1
31
1

8100

F45

4=1
1161718-19
21131
1
41
1
10

B4M1247
I

162

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

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

10
.
Diagnostics
Chart
with
Select
Monitor

D
"
NEW
51
(FBI)

V
.
RELAY

B4M0968

AA
:
TROUBLE
CODE
51
V
.
RELAY

-
ABNORMAL
VALVERELAY
-

DIAGNOSIS
:

Faulty
valve
relay

TROUBLE
SYMPTOM
:

9
ABS
does
not
operate
.

WIRING
DIAGRAM
:

ABS
control
module
and
hydraulic
control
unit
Fuse
SBF-4

No
.
19
Valve
relay
F49

F2
8100
Fuse
IGNsw
SBF-4
FL1
.258

Motor
d
I
No
.18
vv
~
relay
l-

r
w
Qm

Solenoid
valve

FL
inlet

FL
outlet

FR
inlet

FR
outlet

RL
inlet

RL
outlet

RR
inlet

RR
outlet

Pump
motor

M

E

1~
F49

123456789101112131415
46
~
~
16111819
20
2122
23242526
1
11
1
12
1
13
11
4
1
51
1
61
1
71
1
81
1
912
0
1
2728293031

84M1253

166

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

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

10
.
Diagnostics
Chart
withSelect
Monitor

J
10AA4
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?

ves
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AA5
.

10AA5
CHECK
ANY
OTHER
TROUBLE
CODES
APPEARANCE
.

CHECK
;
Are
other
trouble
codes
being
output?

,rES
:
Proceed
with
thediagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

168

4-4d
[ryonBO1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

D~NEW
51
(FBI)

V
.RELAY
ON

B4M0802

AB
:
TROUBLE
CODE
51
V
.
RELAY
ON

-
VALVE
RELAY
ON
FAILURE
-

DIAGNOSIS
:

Faulty
valve
relay

TROUBLE
SYMPTOM
:

*
ABS
does
not
operate
.

WIRING
DIAGRAM
:

ABS
control
module
and
hydraulic
control
unit
Fuse
SBF-4

w-
No
.19

Valve
b
relay
~
F49

0
8100
Fuse
IGN
sw
SBF-4
FL1.258

Motor
No
.18v
~v
relay

w
Qm

Solenoid
valve

FL
inlet

FL
outlet

FR
inlet

FR
outlet

RL
inlet

RL
outlet

RR
inlet

RR
outlet

Pump
motor

M

E

F49

1234567891011113141
1
it
i
~-
76819309
;0
122
23
24

B4M1253

170