1997 SUBARU LEGACY sensor

4-4d
ITyoNS1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

Except
OUTBACK
model

1
2

D

84M0806E

OUTBACK
model

Front
Rear

zt

D

B4M
1036C

Except
OUTBACK
model

1
2

0

-V+

B4M0807E

OUTBACK
model

Front
Rear

1
22
1

D

_v+
-_
B4M
1037C
10H8
CHECK
ANY

I
APPEARANCE

.THER
TROUBLE
CODES

CHECK
;
Are
other
trouble
codes
being
output?

vES
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporarypoor
contact
.

NOTE
:

Check
harness
and
connectors
between
ABSCM&H/U

and
ABS
sensor
.

10H9
CHECK
ABS
SENSOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABS
sensor
.

3)
Measure
resistanceof
ABS
sensor
connector
terminals
.

Terminal

Front
RH
No
.
1
-
No
.
2
:

Front
LHNo
.
1
-
No
.
2
:

Rear
RH
No
.
1
-
No
.
2
:

Rear
LH
No
.
1
-
No
.
2
:

CHECK
:
Is
the
resistance
between
0
.8
and
1
.2
kS2?

~
:
Go
to
step
10H10
.

No
:
Replace
ABS
sensor
.

10H10
CHECK
BATTERY
SHORT
OF
ABS
SENSOR
.

1)
Disconnect
connector
from
ABSCM&H/U
.

2)
Measure
voltage
between
ABS
sensor
and
chassis

ground
.

Terminal

Front
RH
No
.
1
(+)
-
Chassis
ground
(-)
:

Front
LH
No
.
1
(+)
-
Chassis
ground
(-)
:

Rear
RH
No
.
1
(+)
-
Chassis
ground
(-)
:

Rear
LH
No
.
1
(+)
-
Chassis
ground
(
)
:

CHECK
;
Is
the
voltage
less
than
1
V?

Go
to
step
10H11
.

No
:
Replace
ABS
sensor
.

116

BRAKES
[ABS
5
.3i
TYPE]
[710H12]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

Except
OUTBACK
model

1
2

0

L
EV
B4M0807E

OUTBACK
model

Front
hear

2
1

D

-
B4M1037C

11
I
CHECK
BATTERY
SHORT
OF
ABS
SENSOR
.

1)
Turn
ignition
switch
to
ON
.

2)
Measure
voltage
between
ABS
sensor
and
chassis

ground
.

Terminal

Front
RH
No
.
1
(+)
-
Chassis
ground
(-)
:

Front
LHNo
.
1
(+)
-
Chassis
ground
(-)
:

Rear
RH
No
.
i
(+)
-
Chassis
ground
(-)
:

Rear
LHNo
.
1
(+)
-
Chassis
ground
(
)
:

CHECK
:
Is
the
voltage
less
than
1
V?

Go
to
step
10H72
.

No
:
Replace
ABS
sensor
.

2
CHECK

I
ABSCM&H
UNAND/ABSSENSOR
BETWEEN

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
connector
to
ABS
sensor
.

3)
Measure
resistance
between
ABSCM&H/U
connector

terminals
.

Connector
&
terminal

Trouble
code
21
I
(F49)
No
.
11
-
No
.
12
:

Trouble
code
23
I
(F49)
No
.
9
-
No,
10
:

Trouble
code
25
I
(F49)
No
.
14
-
No
.
15
:

Trouble
code
27
I
(F49)
No
.
7
-
No
.
8
:

CHECK
;
Is
theresistance
between
0
.8
and
1
.2
kS2?

YES
:
Go
tostep
10H13
.

No
:
Repair
harness/connector
between
ABSCM&H/U

and
ABS
sensor
.

117

4-4d
[r1oHy3l
BRAKES
[ABS
5
.31
TYPE]
10
.
Diagnostics
Chart
withSelect
Monitor
F49

B4M1240A
I

I

-

r10H13
CHECK
BATTERY
SHORT
OFHARNESS
.

Measure
voltage
between
ABSCM&H/U
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
21
I
(F49)
No
.
11
(+)
-
Chassis
ground

Trouble
code
23
/
(F49)
No
.
9
(+)
-
Chassis
ground

Trouble
code
25
/
(F49)
No
.
14
(+)
-
Chassis
ground

l-)~

Trouble
code
27
/
(F49)
No
.
7
(+)
-
Chassis
ground

CHECK
:
Is
thevoltage
less
than
1
V?

,rES
:
Go
to
step
10H14
.

No
:
Repair
harness
between
ABSCM&H/U
and
ABS

sensor
.

I10H14
CHECK
BATTERY
SHORT
OFHARNESS
.

1)
Turn
ignition
switch
to
ON
.

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

chassis
ground
.

Connector
&
terminal

Trouble
code
21
/
(F49)
No
.
11
(+)
-
Chassis
ground

Trouble
code
23
/
(F49)
No
.
9
(+)
-
Chassis
ground

(-)

Trouble
code
25
I
(F49)
No
.
14
(+)
-
Chassis
ground

Trouble
code
27
/
(F49)
No
.
7
(+)
-
Chassis
ground

(-)

CHECK
:
Is
thevoltage
less
than
1
V?

,rES
:
Go
to
step
10H15
.

No
:
Repair
harness
between
ABSCM&H/U
and
ABS

sensor
.
1
10H15
I
CHECK
INSTALLATION
OF
ABS
SENSOR
.

Tightening
torque
:

32
±
10
N~m
(3
.3
f
1
.0
kg-m,
24
f
7
ft-Ib)

CHECK
:
Are
the
ABS
sensor
installation
bolts
tight-

ened
securely?

,res
:
Go
to
step
10H16
.

No
:
Tighten
ABS
sensor
installation
bolts
securely
.

118

BRAKES
LABS
5
.31
TYPE]
[T10H18]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

G4M0700I

G4M0701
I

10H16
I
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
thetone
wheel
installation
bolts
tight-

ened
securely?

vES
:
Go
to
step
10H17
.

No
:
Tightentone
wheel
installation
bolts
securely
.

(CHECK
ABS
SENSOR
GAP
.

Measure
tone
wheel-to-poke
piece
gap
over
entire
perim-

eterof
the
wheel
.

CHECK
:
Is
the
gap
within
the
specifications
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)

,rES
:
Go
tostep
10H18
.

No
:
Adjust
the
gap
.

NOTE
:

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

spacers
cannot
correct
the
gap,
replace
worn
sensor
or

worn
tone
wheel
.

10H18
CHECK
HUB
RUNOUT
.

Measure
hub
runout
.

CHECK
:
Is
the
runout
less
than0
.05
mm
(0
.0020
in)?

Go
tostep
10H19
.

No
:
Repair
hub
.

119

T
Sensorgap
Sensor
gap

4-4d
[TloHis1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

Except
OUTBACK
model

iz

L
j
B4M0818E

OUTBACK
model

Front
Rear

1
2
2
1

D

84M1042C

1
10H19
I
CHECK
GROUND
SHORT
OF
ABS
SENSOR
.

1)
Turn
ignition
switchto
ON
.

2)
Measure
resistance
between
ABS
sensor
and
chassis

ground
.

Terminal

Front
RH
No
.
7
-
Chassis
ground
:

Front
LH
No
.
1
-
Chassis
ground
:

Rear
RH
No
.
1
-
Chassis
ground
:

Rear
LHNo
.
1
-
Chassis
ground
:

CHECK
:
is
the
resistance
more
than
1
Mn?

,mss
:
Go
to
step
10H20
.

No
:
Replace
ABS
sensor
and
ABSCM&H1U
.

[
MI-120
I
CHECK
GROUND
SHORT
OF
HARNESS
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
connector
to
ABS
sensor
.

3)
Measure
resistance
between
ABSCM&H/U
connector

terminal
and
chassis
ground
.

Connector
&
terminal

Trouble
code
21
l
(F49)
No
.
11
-
Chassis
ground
:

Trouble
code
23
/
(F49)
No
.
9
-
Chassis
ground
:

Trouble
code
25
l
(F49)
No,
14
-
Chassis
ground
:

Trouble
code
27
I
(F49)
No
.
7
-
Chassis
ground
:

CHECK
:
Is
the
resistance
more
than
1
1140?

,rES
:
Go
to
step
10H21
.

No
:
Repair
harness
between
ABSCM&H/U
and
ABS

sensor
.

And
replace
ABSCM&H/U
.

CHECKPOOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HlU
and
ABS
sensor?
<
Ref
.
to

FOREWORD
[T3C1]
.*10
>

vES
:
Repair
connector
.

No
:
Go
to
step
10H22
.

120

BRAKES
[ABS
5
.31
TYPE]
[T10H23]
4-4d

10
.
DiagnosticsChart
with
Select
Monitor
~10H22
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
10H23
.

10H23
CHECK
ANY
I
APPEARANCE

.THER
TROUBLE
CODES

CHECK
:
Are
other
trouble
codes
being
output?

U
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

A
temporary
poor
contact
.

NOTE
:

Check
harness

and
ABS
sensor
.

and
connectors
between
ABSCM&H/U

121

4-4d
[T1o1o1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

D
"
NEW
22
(FBI)

FR
.SS
SOFT

84M0812

D
"
NEW
24
(FBI)

FL
.SS
SOFT

84M0949

D
"
NEW
26
(FBI)

RR
.SS
SOFT

84M0950

D
"
NEW
28
(FBI)

RL
.SS
SOFT

B4M0951

1
:
TROUBLE
CODE
22
FR
.
SSSOFT

-
ABNORMAL
FRONT
RH
ABS
SENSOR

(ABNORMAL
ABS
SENSOR
SIGNAL)
-

J
:
TROUBLE
CODE
24
FL
.
SS
SOFT

-
ABNORMAL
FRONT
LH
ABS
SENSOR

(ABNORMAL
ABS
SENSOR
SIGNAL)
-

K
:
TROUBLE
CODE
26
RR
.
SS
SOFT

-
ABNORMAL
REAR
RH
ABS
SENSOR

(ABNORMAL
ABS
SENSOR
SIGNAL)
-

L
:
TROUBLE
CODE
28
RL
.
SS
SOFT

-
ABNORMAL
REAR
LH
ABS
SENSOR

(ABNORMAL
ABS
SENSOR
SIGNAL)
-

122

BRAKES
[ABS
5
.3i
TYPE]
[T10L0]4-4d

10
.
Diagnostics
Chart
withSelect
Monitor

DIAGNOSIS
:

"
Faulty
ABS
sensor
signal
(noise,
irregular
signal,
etc
.)

Faulty
harness/connector

TROUBLE
SYMPTOM
:

e
ABS
does
not
operate
.

WIRING
DIAGRAM
:

9

ABS
control
module
and
hydraulic
control
unit

Twisted
wire
Ft
0

8100

815

Front
ASS
sensorLH

RearABS
sensorLH
Rear
ABS
sensor
RH

r----------------
1
OUTBACK
with
step
roof
model
I

I
Q
I

RearABS
7
sensor
LH
I
~
III
j
~
Rear
ASS
j
sensor
RH

I
O
I
L---
.
.
.---------J

OUTBACK
with
steproof
model
B~5
O

OOOO
fl

(i~]
DO`]
478
1
10

F49

1234567891011131415
1617181920
1
212
23
4
5
26
218930
13
1
1

B4M1238

Front
ASS
sensor
RH

123