Page 89 of 3342
4-4d
[rsuo1
BRAKES
[ABS
5
.3i
TYPE]
8
.
DiagnosticsChart
with
Trouble
Code
by
ABS
Warning
Light
U
:
TROUBLE
CODE
44
-
A
COMBINATION
OF
AT
CONTROL
ABNORMAL
-
DIAGNOSIS
:
a
Combination
of
AT
control
faults
TROUBLE
SYMPTOM
:
e
ABS
does
not
operate
.
WIRING
DIAGRAM
:
F49
ABS
control
module
and
hydraulic
control
unit
ILE
Fuse
IGN
sw
SBF-4
FL]
.25B
No
.16
F45
B62
B54
m
O
JE
Transmission
control
module
X100
B56
854
B55856
1
3
4
6
P11213149
1
49
10
1
11
11
141
1
11
211311411
tl
1611
/11
F49
123456789101112131415
2122
23
242
5
26
617W031
2171
8
2
8100
f45
'1
14
1
B4M
1247
70
Page 90 of 3342
![SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
[TM]
4-4d
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
`L/
Tn
Mark
1
h
.I
t,~
\
;d
ABSCM&HlU
B4M
1248A
181
.11
I
CHECK
SPECIFICATIONS
OF
THE
ABSCM
.
Chec SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
[TM]
4-4d
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
`L/
Tn
Mark
1
h
.I
t,~
\
;d
ABSCM&HlU
B4M
1248A
181
.11
I
CHECK
SPECIFICATIONS
OF
THE
ABSCM
.
Chec](/manual-img/17/57434/w960_57434-89.png)
BRAKES
[ABS
5
.31
TYPE]
[TM]
4-4d
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
`L/
Tn
Mark
1
h
.I
t,~
\
;d
ABSCM&HlU
B4M
1248A
181
.11
I
CHECK
SPECIFICATIONS
OF
THE
ABSCM
.
Check
specifications
of
the
mark
to
the
ABSCM&H/U
.
Mark
Model
C3
AWD
AT
C4
AWD
MT
CHECK
:
Is
an
ABSCM&H/U
for
AT
model
installed
on
a
MT
model?
,res
:
Replace
ABSCM&H/U
.
No
:
Go
to
step
81
.12
.
$U2
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
theresistance
more
than1
MS2?
ves
:
Go
to
step
8U3
.
No
:
Repair
harness
between
TCM
and
ABSCM&H/U
.
181
.13
CHECK
BATTERY
SHORT
OF
HARNESS
.
Measure
voltage
between
ABSCM&H/U
connector
and
chassis
ground
.
Connector
&
terminal
(F49)
No
.
3
(+)
-
Chassis
ground
(
)
:
CHECK
;
Is
thevoltage
less
than
1
V?
YES
:
Go
to
step
8U4
.
No
:
Repair
harness
between
TCM
and
ABSCM&H/U
.
71
Page 91 of 3342
4-4d
muq
BRAKES
[ABS
5
.31
TYPE]
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
B56
1
1
01
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
11
111
.
1211
L
0
V
B4M
1251
A
8U4
CHECK
BATTERY
SHORT
OF
HARNESS
.
1)
Turn
ignition
switch
to
ON
.
2)
Measure
voltage
between
ABSCM&HlU
connector
and
chassis
ground
.
Connector
&
terminal
(F49)
No
.
3
(+)
-
Chassis
ground
(-)
:
CHECK
:
Is
thevoltagelessthan
1
V?
Go
to
step
811
.115
.
No
:
Repair
harness
between
TCM
and
ABSCM&H/U
.
8U5
CHECK
TCM
.
1)
Turn
ignition
switch
to
OFF
.
2)
Connect
all
connectors
to
TCM
.
3)
Turn
ignition
switch
to
ON
.
4)
Measure
voltage
between
TCM
connector
terminal
and
chassis
ground
.
Connector
&
terminal
(B56)
No
.
5
(+)
-
Chassis
ground
(
)
:
CHECK
:
Is
the
voltage
between
10
V
and
15
V?
Go
tostep
8U7
.
Go
tostep
SU6
.
$U6
I
CHECK
AT
.
!s
the
AT
functioning
normally?
,rES
:
Replace
TCM
.
No
:
Repair
AT
.
72
Page 92 of 3342
![SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
ITSUioi
4-4d
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
CHECK
OPEN
CIRCUIT
OF
HARNESS
.
Measure
voltage
between
ABSCM&H/U
connector
and
chassis
ground
.
SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
ITSUioi
4-4d
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
CHECK
OPEN
CIRCUIT
OF
HARNESS
.
Measure
voltage
between
ABSCM&H/U
connector
and
chassis
ground
.](/manual-img/17/57434/w960_57434-91.png)
BRAKES
[ABS
5
.31
TYPE]
ITSUioi
4-4d
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
CHECK
OPEN
CIRCUIT
OF
HARNESS
.
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
15
V?
,rES
:
Go
to
step
81
.18
.
No
:
Repair
harness/connector
between
TCM
and
ABSCM&H/U
.
181
.18
1
CHECK
POOR
CONTACT
IN
CONNECTORS
.I
CHECK
:
Is
there
poor
contact
in
connectors
between
TCM
and
ABSCM&H/U?
<
Ref,
to
FORE-
WORD
[T3C1]
.*10
>
YES
:
Repair
connector
.
No
:
Go
to
step
8U9
.
I
8U9CHECK
ABSCM&H/U
.
1)
Turn
ignition
switchto
OFF
.
2)
Connect
all
connectors
.
3)
Erase
the
memory
.
4)
Perform
inspection
mode
.
5)
Read
out
the
trouble
code
.
CHECK
:
Is
the
same
trouble
code
as
in
the
current
diagnosis
still
being
output?
0
:
Replace
ABSCM&H/U
.
no
:
Go
to
step
81
.110
.
O
CHECK
ANY
I
APPEARANCE
.
O
THER
TROUBLE
CODES
Are
othertrouble
codes
being
output?
Proceed
with
the
diagnosiscorresponding
to
the
trouble
code
.
No
:
A
temporary
poor
contact
.
~3
Page 93 of 3342
4-4d
[TSVO1
BRAKES
[ABS
5
.31
TYPE]
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
V
:
TROUBLE
CODE
51
-
ABNORMAL
VALVERELAY
-
DIAGNOSIS
:
Faulty
valve
relay
TROUBLE
SYMPTOM
:
*
ABS
does
notoperate
.
WIRING
DIAGRAM
:
ABS
control
module
and
hydraulic
control
unit
Fuse
SBF-4
t
No
.
19
Valve
relay
~
F4
Lk
9
F2
8100
Fuse
IGN
sw
SBF-4
FL1.25B
Motor
~
O
No
.18
relay
r
w
m
Solenoid
valve
FL
inlet
FL
outlet
FR
inlet
FR
outlet
RL
inlet
RL
outlet
RR
inlet
RR
outlet
Pump
motor
M
E
100
f49
1234567891011113141
4
16171819202122
23
24
52
X
11
1
14
1
181
~
~
q
27
12
8
1
29
1
30
1
31
1
84M1253
74
Page 94 of 3342
![SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
IT8V3]4-4d
8
.
Diagnostics
Chad
with
Trouble
Codeby
ABS
Warning
Light
F49
1
1
213141516
1
7
1
89
101112131415
161718192
21
23
242526
728293031
D
n
SL
B4M1243A
00000
E3
[ SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
IT8V3]4-4d
8
.
Diagnostics
Chad
with
Trouble
Codeby
ABS
Warning
Light
F49
1
1
213141516
1
7
1
89
101112131415
161718192
21
23
242526
728293031
D
n
SL
B4M1243A
00000
E3
[](/manual-img/17/57434/w960_57434-93.png)
BRAKES
[ABS
5
.31
TYPE]
IT8V3]4-4d
8
.
Diagnostics
Chad
with
Trouble
Codeby
ABS
Warning
Light
F49
1
1
213141516
1
7
1
89
101112131415
161718192
21
23
242526
728293031
D
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[']C~oo
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oo
°~
1
IIII
`
84M1272A
18V-,
CHECK
INPUT
VOLTAGE
OF
ABSCM&H/U
.
1)
Turn
ignition
switch
to
OFF
.
2)
Disconnect
connector
from
ABSCM&H/U
.
3)
Run
the
engine
at
idle
.
4)
Measure
voltage
between
ABSCM&H/U
connector
and
chassis
ground
.
Connector
&
terminal
(F49)
No
.
1
(+)
-
Chassis
ground
(
)
:
(F49)
No
.
24
(+)
-
Chassis
ground
(
)
:
CHEGK
:
Is
the
voltage
between
10
V
and
15
V?
YES
:
Go
to
step
8V2
.
No
:
Repair
harness
connector
between
battery
and
ABSCM&H/U
.
8V2
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
the
resistance
leis
than0
.5
0?
Go
to
step
8V3
.
No
:
Repair
ABSCM&H/U
ground
harness
.
8V3
CHECK
VALVE
.
RELAY
IN
ABSCM&H/U
.
Measure
resistance
between
ABS,CM&H/U
and
terminals
.
Terminals
No
.
23
(+)
-
-
No
.
24
(-)
CHECK
:
Is
theresistance
amore
than
1'
MSZ?
YES
:
Go
to
step
8V4
.
No
:
Replace
ABSCM&H/U
.
75
Page 95 of 3342
4-4d
[rsva]
BRAKES
[ABS
5
.31
TYPE]
I
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
1
8V4
I
CHECKPOOR
CONTACT
IN
CONNECTORS
.
Is
there
poor
contact
in
connectors
between
generator,
battery
and
ABSCM&HIU?
<
Ref
.
to
FOREWORD
[T3C1]
.*10
>
Repair
connector
.
No
:
Go
to
step
8V5
.
8V5
CHECK
ABSCM&H/U
.
1)
Connect
all
connectors
.
2)
Erasethe
memory
.
3)
Perform
inspection
mode
.
4)
Read
out
the
trouble
code
.
CHECK
:
Is
the
same
trouble
code
as
in
thecurrent
diagnosis
still
being
output?
,rES
:
Replace
ABSCM&H/U
.
No
:
Go
to
step
8V6
.
8116
CHECK
ANY
OTHER
TROUBLE
CODES
APPEARANCE
.
CHECK
:
Are
other
trouble
codes
being
output?
Proceed
withthe
diagnosis
corresponding
tothe
trouble
code
.
No
:
A
temporary
poor
contact
.
76
Page 96 of 3342
4-4d
[TSWO]
BRAKES
[ABS
5
.3i
TYPE]
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light
W
:
TROUBLE
CODE
52
-
ABNORMAL
MOTOR
AND/OR
MOTOR
RELAY
-
DIAGNOSIS
:
Faulty
motor
Faulty
motor
relay
Faulty
harness
connector
TROUBLE
SYMPTOM
:
e
ABS
does
not
operate
.
WIRING
DIAGRAM
:
ABS
control
moduleand
hydra
ulic
control
unit
SBF-6
Valve
relay~
F49
F28100
Fuse
IGN
sw
SBF-4
FL1
.25B
I
O---tY
Motor
~
bNo
.18
relay
'-
rw
Qm
Solenoid
valve
FL
inlet
FL
outlet
FR
inlet
FR
outlet
RL
inlet
RL
outlet
RR
inlet
RR
outlet
Pump
motor
M
E
E
F49100
11
3
1
4
1
5
11
1
1
2
13
1
14
1
1
12131
4
16171819
20
2122
1
1819
~
~
17
1
7
111
79
1
-10
1
31
1
2324526
11
1
171
1
31
1
41
1
51
1
6
B4M1255
78