1997 SUBARU LEGACY ignition

4-4d
[TSJs1
BRAKES
[ABS
5
.31
TYPE]

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

G4M0700
I

G4M0701

CHECK
INSTALLATION
OF
TONE
WHEEL
.

Tightening
torque
:

13
f
3
N~m
(1.3
f
0
.3
kg-m,
9
f
2
.2
ft-Ib)

CHECK
:
Are
the
tone
wheel
installation
bolts
tight-

ened
securely?

,res
:
Go
to
step
8J7
.

No
:
Tightentone
wheel
installation
bolts
securely
.

8J7
I
CHECK
ABS
SENSOR
GAP
.

Measure
tone
wheel
to
pole
piece
gap
over
entire
perim-

eter
of
the
wheel
.

CHECK
:
Is
the
gap
within
thespecifications
shown
in

the
following
table?

Front
wheel
Rear
wheel

Specifications
0
.9
-
1.4
mm

(0
.035
-
0
.055
in)
0
.7
-
1.2
mm

(0
.028
-
0
.047
in)

,
.ES
:
Go
tostep
8J8
.

No
:
Adjust
the
gap
.

NOTE
:

Adjustthe
gap
using
spacer
(Part
No
.
26755AA000)
.
If

spacers
cannot
correct
the
gap,
replace
worn
sensor
or

worn
tone
wheel
.

18,18
1
CHECK
OSCILLOSCOPE
.

Is
an
oscilloscopeavailable?

YES
:
Go
to
step
8J9
.

No
:
Go
to
step
8,1110
.

8J9
I
CHECK
ABS
SENSOR
SIGNAL
.

1)
Raise
all
four
wheels
of
ground
.

2)
Turn
ignition
switch
OFF
.

3)
Connect
theoscilloscope
to
the
connector
(F1)
or
con-

nector(B100)
.

4)
Turn
ignition
switch
ON
.

50

t
Sensor
gap

Sensor
gap

4-4d[T8J13]
BRAKES
[ABS
5
.3i
TYPE]

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

8
.113
CHECK
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
all
connectors
.

3)
Erase
the
memory
.

4)
Perform
inspection
mode
.

5)
Read
outthe
trouble
code
.

CHECK
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

.rES
:
Replace
ABSCM&H/U

No
:
Go
to
step
8J14
.

CHECK
ANYOTHER
TROUBLE
CODES

APPEARANCE
.

CHECK
:
Are
other
trouble
codes
being
output?

,rES
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporarypoor
contact
.

52

BRAKES
[ABS
5
.31
TYPE]
IT8N3I4-4d

8
.
DiagnosticsChart
with
Trouble
Code
by
ABS
Warning
Light

819
11
Oil
111
21131141

4

161171181191212112
9
23
24
25
26
1
2
81
2
1301
31
1

F=_1

V
B4
M
1234A

F49

1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
101112131415
11
16
1
17
1
18
1
19
1
2
01
212
23
24
25
26
L-~
7
1
28
1
2001
11

]L
COO
B4M
1243A

$N1
I
CHECK
INPUT
VOLTAGE
OF
ABSCM&H/U
.

1)
Disconnect
connector
from
ABSCM&H/U
.

2)
Run
theengine
at
idle
.

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

chassis
ground
.

Connector
&
terminal

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

CHECK
;
Is
the
voltage
between
10
V
and
15
V?

,rES
:
Go
tostep
8N2
.

No
:
Repair
harness
connector
between
battery,
igni-

tion
switch
and
ABSCM&H/U
.

$N2
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
less
than
0
.5
S2?

Go
to
step
8N3
.

No
:
Repair
ABSCM&H/U
ground
harness
.

$N3
I
CHECKPOOR
CONTACT
IN
CONNECTORS
.

Is
there
poor
contact
in
connectors
between

generator,
battery
and
ABSCM&HlU?
<
Ref
.

to
FOREWORD
[T3C1]
.*10
>

YES
:
Repair
connector
.

No
:
Go
to
step
8N4
.

55

BRAKES
[ABS
5
.31
TYPE]
[T8R3]
4-4d

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

F49

1
1
213
1
4
1
5
1
6
1
7
1
8
9
1
10
1
11
1
12
1
131
415
1
16
1
17
1
18
1
19
1
2
21
23
242526
728293031
1

D
~

]LB4M1243A

181111
1
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
15V?

,rES
:
Go
to
step
8112
.

No
:
Repair
harness
connector
between
battery,igni-
tion
switch
and
ABSCM&H/U
.

181112
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
than0
.5
S2?

Go
to
step
8R3
.

No
:
Repair
ABSCM&H/U
ground
harness
.

18113
1
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Is
there
poor
contact
in
connectors
between

generator,
battery
and
ABSCM&HIU?
c
Ref
.

to
FOREWORD
[T3C1
]
.*10
>

,rES
:
Repair
connector
.

No
:
Go
to
step
8114
.

59

BRAKES
[ABS
5
.31
TYPE]
Rsss1
4-4d

8
.
DiagnosticsChart
with
Trouble
Code
by
ABS
Warning,Light

M

1
23
45
6
718
1101111121131141151
1116117118119121211
'9t,-73
24-
2526
71281203*
01311111

B4M1243A

8S1
CHECK
GROUND
CIRCUIT
OF
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Measure
resistance
between
ABSCM&H/U
and
chassis

ground
.

Connector
&
terminal

(F49)
No
.
23
-
Chassis
ground
:

CHECK
;
Is
the
resistance
less
than
0
.5
0?
Go
to
step
8S2
.

No
:
Repair
ABSCM&H/U
ground
harness
.

8S2
CHECKPOOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

battery,ignition
switch
and
ABSCM&HlU?

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

vES
:
Repair
connector
.

No
:
Go
tostep
8S3
.

8S3
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
thecar
telephone
orthe
wireless
transmit-

ter
properly
installed?

,rES
:
Go
to
step
8S4
.

No
:
Properly
install
thecar
telephone
or
the
wireless

transmitter
.

8S4
CHECK
SOURCES
OFSIGNAL
NOISE
.

CHECK
;
Are
noise
sources
(such
asan
antenna)

installed
near
the
sensorharness?

,rES
:
Install
the
noise
sources
apartfrom
the
sensor

harness
.

No
:
Go
to
step
8S5
.

8S5
I
CHECK
ABSCM&HIU
.

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?

Replace
ABSCM&H/U
.

No
:
Go
to
step
8S6
.

63

BRAKES
[ABS
5
.3i
TYPE]
[T8T3]
4-4Q

8
.
DiagnosticsChart
with
Trouble
Code
by
ABS
Warning
Light

\
7<
1

o

~
-
%mnn>>fl
5

B4M0430

F49

1
234
5
6
7
819
110111112113114115

4
1
18
22112
W23193123
1
24
1
25
1
26

L
F
a=--]

V

B4M1234A

18T1
I
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
17
V?

Go
to
step
8T2
.

No
:
Repair
generator
.

8T2
CHECK
BATTERY
TERMINAL
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Are
the
positive
and
negative
battery
termi-

nals
tightly
clamped?

ves
:
Go
to
step
8T3
.

No
:
Tighten
the
clamp
of
terminal
.

8T3
CHECK
INPUT
VOLTAGE
OF
ABSCM&H/U
.

1)
Disconnect
connectorfrom
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
17
V?

YES
:
Go
to
step
8T4
.

No
:
Repair
harness
connector
between
battery,
igni-

tion
switch
and
ABSCM&H/U
.

67

4-4d
[T8T4l
BRAKES
[ABS
5
.31
TYPE]
8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

(~~O

a

1
23
4
567
819110111112113114115
16171819
2
1
23
2425
26
7
1281
2
91

]C
-_
84M1243A

$T4
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
less
than
0
.5
0?

vES
:
Go
to
step
8T5
.

No
:
Repair
ABSCM&H/U
ground
harness
.

CHECKPOOR
CONTACT
IN
CONNECTORS
.I

Is
there
poor
contact
in
connectors
between

generator,
battery
and
ABSCM&HIU?
<
Ref
.

to
FOREWORD
[T3C1]
.*10
>

Repair
connector
.

No
:
Go
to
step
8T6
.

18T6
i
CHECK
ABSCM&HIU
.

1)
Connect
ail
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
outthe
trouble
code
.

diagnosis
still
being
output?

,mss
:
Replace
ABSCM&H/U
.

No
:
Go
tostep
8T7
.

CHECK
;
Is
the
same
trouble
code
as
in
thecurrent

CHECK
ANY
OTHER
TROUBLE
CODES

APPEARANCE
.

CHECK
:
Are
other
trouble
codes
being
output?

Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporarypoor
contact
.

68

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