1997 SUBARU LEGACY ABS

BRAKES
[ABS
5
.31
TYPE]
[T9R0]
4-4d

9
.
Select
Monitor
Function
Mode

G-SENS
(FE14)

2
.27
V

B4M0939
I

LED
No
.
Signal
name
Display

1
Motor
relay
monitor
MM

2
Stop
tight
switch
131

3
AT
ABS
signal
AT

4
CCM
signal
cm

5
ABS
signal
AO

s
-
-

--

a
--

9
--

10
l
-

MM
131
AT
CM
AO

uoona

ooao
,o

CODE
21
(
F
E
16
)

FR
.
SS
HARD

H4
M
1151

P
:
MODE
FE14

-
G
SENSOR
OUTPUTVOLTAGE
(G-SENS)
-

9
Refers
to
vehicle
acceleration
detected
by
the
analog
G

sensor
at
the
time
of
malfunction
.
It
appears
on
the
select

monitor
display
in
volts
.

NOTE
:

Only
AWD
model

Q
:
MODE
FE15

-
ON
H
OFF
SIGNAL
-

"
ON
or
OFF
is
indicated
at
the
timeof
malfunction
.

"
Requirement
for
LED
"ON"

LED
No
.
1
Motor
relay
is
turned
ON
.

LED
No
.
2Stop
light
switch
is
turned
ON
.
(With
brake

pedal
depressed
.)

LED
No
.
3
ABS
control
operates
.

LEDNo
.
4
ABS
control
operates
.

LED
No
.
5
ABS
control
operates
.

R
:
MODE
FE16

-
TROUBLE
CODE
(CODE)
-

e
When
freeze
frame
data
is
stored
in
memory,
trouble

code
appears
on
monitor
.

NOTE
:

The
monitor
as
shown,
indicates
trouble
code
21
.

101

4-4d
[T1
0A01
BRAKES
[ABS
5
.3i
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

10
.
Diagnostics
Chart
with
Select

Monitor

I
TROUBLE
OCCURS
.I

A
:
BASIC
DIAGNOSTIC
CHART

Is
Select
Monitor
available?
No

Yes

Ask
the
customer
when
and
how
the
trouble
occurred
using
interview
check
list
.

I
PRE-INSPECTION
I

Use
select
monitor,
retrieve
trouble
code
in
function
mode
FBiand
record
the
code
.

Perform
diagnostics
in
accordance
with
trouble
code
.
No
corresponding
trouble
code

Diagnostics
Chart
for
On-board
Diagnosis
System

Inspection
using
General
Diagnostics
chart

Trouble
code
is
designated
or
ABS
warning
light
constantly
remains
on
.

Repair
.

Clear
memory
.

I
INSPECTION
MODE
I

Use
select
monitor,
retrieve
trouble
code
in
function
model
FB1and
recordthe
code
.

No
trouble
code
is
designated
and
ABS
warning
light
goes
out
after
turning
on
.

I
CONFIRMATION
TEST
I

END

B4M1076A

CAUTION
:

Remove
foreign
matter
(dust,
water,
etc
.)
from
the

ABSCM&H/U
connector
during
removal
and
installation
.

NOTE
:

To
check
harness
for
broken
wires
or
short
circuits,
shake

it
while
holding
it
or
the
connector
.

102

BRAKES
[ABS
5
.31
TYPE]
[T10B0]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

B
:
LIST
OF
TROUBLE
CODE

Code
Display
screen
(FBi)
Contents
of
diagnosis
Ref
.
to

-
ERROR
3
(1)
Select
monitor
communication
failure
[T10COJ*10

11
NO
TROUBLE
Although
no
trouble
appears
on
the
select
monitor
display,
the
ABS
warning
light
remains
on
.
[T10D0]*10

21
FR
.
SS
HARD
Open
circuit
orinput
voltage
too
high
of
FR
sensor
[T10E0]*10

22
FR
.
SS
SOFT
Abnormal
ABS
sensor
signal
of
FRsensor
[T1010J*10

23FL
.
SS
HARD
Open
circuit
orinput
voltage
too
high
of
FLsensor
[T10F0]*10

24FL
.
SS
SOFT
Abnormal
ABS
sensor
signal
of
FL
sensor
[T10J0]*10

25
RR
.
SS
HARD
Open
circuit
orinput
voltage
too
high
of
RR
sensor[T10G0]*10
26
RR
.
SS
SOFT
Abnormal
ABS
sensor
signal
of
RR
sensor[T10K0]*10
27
RL
.
SS
HARD
Open
circuit
orinput
voltage
too
high
of
RL
sensor
[T10H0]tr10

28
RL
.
SS
SOFT
Abnormal
ABS
sensor
signal
of
RL
sensor
[T10L0]*10

29
EITHER
.
SS
SOFT
Abnormal
ABS
sensor
signal
(any
one
of
four)
JT10M0]{r10

31
FR
.
EV
VALVE
Abnormal
FR
inlet
valve
[T10N0]*10

32
FR
.
AV
VALVE
Abnormal
FR
outlet
valve
[T10R0]*10

33
FL
.
EV
VALVE
Abnormal
FL
inlet
valve
[T1000]*10

34
FL
.
AV
VALVE
Abnormal
FL
outlet
valve
[T10S0]xr10

35
RR
.
EV
VALVE
Abnormal
RR
inlet
valve
[T10P0]*10

36
RR
.
AV
VALVE
Abnormal
RR
outlet
valve
[T10T0]*10

37
RL
.
EV
VALVE
Abnormal
RL
inlet
valve
[T10QO]*10

38
RL
.
AV
VALVE
Abnormal
RL
outlet
valve[T10U0]tr10

41
ECU
Abnormal
ABSCM&H/U
[T10V0)*10

42
LOW
VOLTAGE
Source
voltage
is
low
.
[T10W0]tr10

HIGH
VOLTAGE
Source
voltage
is
high
.
[T10X0]*10

44
CCM
LINE
A
combination
of
AT
control
abnormals
(ABS
not
in
control)
[T10Y0]*10

CCM
OPEN
A
combination
of
AT
control
abnormals
(ABS
in
control)
[T10Z0]*10

V
.
RELAY
Abnormal
valve
relay
[T10AA0]*10
51
V
.
RELAY
ON
Valve
relay
ON
failure
[T10AB0]*10

M
.
RELAY
OPEN
Open
circuit
of
motor
relay
[T10AC0]*10

52
M
.
RELAY
ON
Motor
relay
ON
failure
[T10AD0]tr10

MOTOR
Abnormal
motor
[T10AE0]*10

54
BLS
Abnormal
stop
light
switch
[T10AF0]*10

G
SENSOR
LINE
Open
or
short
circuit
of
G
sensor
[T10AG0]*10

G
SENSOR
+B
Battery
short
of
G
sensor
[T10AH0]*10
56
G
SENSOR
H
~x
Abnormal
G
sensor
high
V
output
[T10A10]*10

G
SENSOR
STICK
I
G
sensor
output
is
stuck
.
[T10AJ0]*10

NOTE
:

High
~t
means
high
friction
coefficient
against
road

surface
.

103

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

10
.
Diagnostics
Chart
with
Select
Monitor

*~k*~k~~*~k***~k~k~k

ERROR
3

84M0943

C
:
ERROR
3
(1)

-
SELECT
MONITOR
COMMUNICATION

FAILURE
-

DIAGNOSIS
:

Faulty
harness
connector

TROUBLE
SYMPTOM
:

"
ABS
warning
light
remains
on
.

"
ERROR
3
or
1
appears
on
the
select
monitor
display
.

WIRING
DIAGRAM
:

F49

ABS
control
module
and
hydrauliccontrol
unit

S8F-4

818

Data
link
connector

FL1.258

8100
878
F49

1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
1
10
1
11
1
12
1
13
1415
1116
1
17
1
18
1
19
1
20
12
1
2
23
425
96
49
~0L_LLl~J
1116
1
17
1
18
1
19
1
20
12
1
2
23
45
26
1
1
1
1
41
11
9
0
128
293031

84M1266

f2
8100
Fuse
IGNsw

No
.18o-

104

Generator

BRAKES
[ABS
5
.3i
TYPE]
[T1
0C4]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

1~
\

v
ILIA

m(l
(l
n
!~
5r
J
%

B4M0430

1
10C1
I
CHECKGENERATOR
.I

1)
Start
the
engine
.

2)
Idle
the
engine
.

3)
Measure
voltage
between
generator
and
chassis

ground
.

Terminal

Generator
B
terminal
(+)
-
Chassis
ground
(
)
:

CHECK
;
Is
the
voltage
between
10
and
15
V?

Go
tostep
10C2
.

No
:
Repair
generator
.

10C2
CHECK
BATTERY
TERMINAL
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
at
battery
terminal?

,rES
:
Repair
battery
terminal
.

No
:
Go
to
step
10C3
.

10C3
CHECK
I
MONITOR
.

MMUNICATION
OF
SELECT

Using
the
select
monitor,
check
whether
communication

to
other
system(suchas
engine,
AT,
etc
.)
can
be
executed

normally
.

CHECK
:
Are
the
name
and
year
ofthe
system
dis-

played
on
theselect
monitor?

Go
to
step
10C4
.

No
:
Repair
select
monitor
communication
cable
and

connector
.

10C4
CHECK
I
CONNECTOR
.

INSTALLATION
OF
ABSCM&H/U

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
ABSCM&HIU
connector
inserted
into

ABSCM&HlU
until
the
clamp
locks
onto
it?

Go
to
step
10C5
.

n~o
:
Insert
ABSCM&H/U
connector
into
ABSCM&H/U

until
the
clamp
locks
onto
it
.

105

4-4d
[T1ocs1
BRAKES
[ABS
5
.3i
TYPE]

10
.
DiagnosticsChart
with
Select
Monitor

F49

1
2
3L415161718
9
1
10
1
11
1
12
1
13
1
14
1
15
6171819
221
232425
26
I
U
71
28121301311

D
~

SC
B4M
1243A

I
10C5
I
CHECK
POWER
SUPPLY
OF
ABSCM&H/U
.

1)
Disconnect
connectorfrom
ABSCM&H/U
.

2)
Start
engine
.

3)
Idle
the
engine
.

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

chassis
ground
.

Connector
&
terminal

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

CHECK
;
Is
thevoltage
between
10
and
15
V?

,rES
:
Go
to
step
10C6
.

No
:
Repair
ABSCM&H/U
power
supply
circuit
.
I
10C6
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
theresistance
less
than0
.5
0?

Repair
harness/connector
between
ABSCM&H/U

and
select
monitor
.

No
:
Go
to
step
10C7
.

106

BRAKES
[ABS
5
.31
TYPE]
[710C8]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

(~§)
(~~o
1
2
3
4
5
171819
11
011
111
2113114115
1617184
2
212
23
2425
26
1
Q2
Y131
1
2n
171
9
.
1

D

Lt
10
0
.

B4M
1267A

10C7
CHECK
HARNESS/CONNECTOR
BETWEEN

ABSCM&H/U
AND
DATA
LINK
CONNECTOR
.

1)
Turn
ignition
switch
OFF
.

2)
Measure
resistance
between
ABSCM&H/U
connector

and
data
link
connector
.

Connector
&
terminal

(F49)
No
.
20
-
(B78)
No
.
3
:

(F49)
No
.
5
-
(B78)
No
.
2
:

CHECK
:
Is
the
resistance
less
than0
.5
SZ?

,rES
:
Repair
harness
and
connector
between

ABSCM&H/U
and
data
fink
connector
.

No
:
Go
to
step
10C8
.
(
10C8
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HI
U
and
data
link
connector?
<
Ref
.

to
FOREWORD
[T3C1]
.*10>

,rES
:
Repair
connector
.

No
:
Replace
ABSCM&H/U
.

107

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

10
.
Diagnostics
Chart
withSelect
Monitor

D
"
ALL
11
(FBI)

NO
TROUBLE

B4M0944

D
:
NO
TROUBLE

-
ALTHOUGHNO
TROUBLE
APPEARS
ON

THESELECT
MONITOR
DISPLAY,
THE
ABS

WARNING
LIGHT
REMAINS
ON
-

DIAGNOSIS
:

*
ABS
warning
light
circuit
is
shorted
.

TROUBLE
SYMPTOM
:

"
ABS
warning
light
remains
on
.

"
NO
TROUBLE
displayed
on
the
select
monitor
.

NOTE
:

When
the
ABS
warning
light
is
OFF
and
"NO
TROUBLE"

is
displayed
on
the
select
monitor,
thesystem
is
in
normal

condition
.

WIRING
DIAGRAM
:

F49
F2
8100

ABS
control
module
and
hydraulic
control
unit

Fuse

No
.18

Fuse

C
:0
No
.15

ABS

Combination
meter

oDiagnosis°
E
connector
g

Diagnosis
terminal

IGN
sw
SBF-4
FL1
.25B

r
w
m

Fuse
SBF-3

No
.
19

981
BI00

121314
IC
;
;l
EEL
r-1
M
~1
1
111
2
1
1
31141
1
10
46

i14

1
1
12131
4
1516
111

i2
F19

1234567891111131415
1819
201122
23
4
2526
M78
1
27,9
1
30
13
11

84M1230
I
108