Page 41 of 3342
![SUBARU LEGACY 1997 Service Repair Manual
4-4d
[TSBO]
BRAKES
[ABS
5
.31
TYPE]
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
B
:
CHECK
LIST
FOR
INTERVIEW
Check
the
following
items
about
the
vehicles
state
.
1
.
THE
STATE
OF
THE
ABS SUBARU LEGACY 1997 Service Repair Manual
4-4d
[TSBO]
BRAKES
[ABS
5
.31
TYPE]
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
B
:
CHECK
LIST
FOR
INTERVIEW
Check
the
following
items
about
the
vehicles
state
.
1
.
THE
STATE
OF
THE
ABS](/manual-img/17/57434/w960_57434-40.png)
4-4d
[TSBO]
BRAKES
[ABS
5
.31
TYPE]
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
B
:
CHECK
LIST
FOR
INTERVIEW
Check
the
following
items
about
the
vehicle's
state
.
1
.
THE
STATE
OF
THE
ABS
WARNING
LIGHT
ABS
warning
light
O
Always
comes
on
.
D
Sometimes
O
Onlyonce
O
Does
not
come
on
o
When
/how
long
does
it
come
on?
:
Ignition
key
position
O
LOCK
D
ACC
OON
(before
starting
engine)
D
START
O
On
afterstarting
(Engine
is
running)
O
On
after
starting
(Engine
is
stop)
Timing
O
Immediately
afterignition
is
ON
.
O
Immediately
after
ignition
starts
.
O
When
advancing
km/h
to
km/h
MPH
to
MPH
D
While
traveling
at
a
constant
speed
km/h
MPH
D
When
decelerating
km/h
to
km/h
MPH
to
MPH
OWhen
turning
to
right
Steering
angle
:
deg
Steering
time
:
sec
D
When
turning
to
left
Steering
angle
:
deg
Steering
time
:
sec
D
When
moving
other
electrical
parts
Parts
name
Operating
condition
2
.
SYMPTOMS
ABS
operating
D
Performsno
work
.
condition
D
Operates
only
when
abruptly
applying
brakes
.
Vehicle
speed
:
km/h
MPH
~
How
to
step
on
brake
pedal
a)
Operating
time
:
sec
b)
Operating
noise
:
O
Produce
/
D
Does
not
produce
oWhat
kind
of
noise?
O
Knock
O
Gong
gong
D
Bong
a
Buzz
D
Gong
gong
buzz
O
Others
c)
Reaction
force
of
brake
pedal
O
Stick
O
Press
down
once
with
a
clunk
O
Press
and
released
D
Others
12
Page 42 of 3342
![SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
[MO]
4-4d
6
.
DiagnosticsChart
for
On-board
Diagnosis
System
Behavior
of
vehicle
a)
Directional
stability
cannotbe
obtained
or
steering
arm
refuses
to
work
when
applying
bra SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
[MO]
4-4d
6
.
DiagnosticsChart
for
On-board
Diagnosis
System
Behavior
of
vehicle
a)
Directional
stability
cannotbe
obtained
or
steering
arm
refuses
to
work
when
applying
bra](/manual-img/17/57434/w960_57434-41.png)
BRAKES
[ABS
5
.31
TYPE]
[MO]
4-4d
6
.
DiagnosticsChart
for
On-board
Diagnosis
System
Behavior
of
vehicle
a)
Directional
stability
cannotbe
obtained
or
steering
arm
refuses
to
work
when
applying
brakes
O
Yes
/
ONo
When
:
D
Vehicle
turns
to
right
o
Vehicle
turns
to
left
D
Spins
D
Others
b)
Directional
stability
cannot
be
obtained
orsteering
arm
refuses
to
work
when
accelerating
O
Yes
/
O
No
When
:
O
Vehicle
turns
to
right
O
Vehicle
turns
to
left
D
Spins
O
Others
c)
Brakes
areout
of
order
:
O
Yes
/
ONo
What
:
O
Braking
distance
is
long
O
Brakes
lockor
drag
D
Pedal
stroke
is
long
D
Pedal
sticks
O
Others
d)
Poor
acceleration
:
D
Yes
/
ONo
What
:
D
Fails
to
accelerate
o
Engine
stalls
o
Others
e)
Occurrence
of
vibration
:
D
Yes
/
[]No
Where
What
kind
f)
Occurrence
of
abnormal
noise
:
O
Yes
/
DNo
Where
What
kind
g)
Occurrence
of
other
phenomena
:
D
Yes
/
ONo
What
kind
3
.
CONDITIONS
UNDER
WHICH
TROUBLE
OCCURS
Environment
a)
Weather
D
Fine
O
Cloudy
O
Rainy
D
Snowy
O
Various/Others
b)
Ambient
temperature
F(°C)
c)
Road
D
Urban
area
D
Suburbs
O
Highway
O
General
road
D
Ascending
slope
O
Descending
slope
O
Paved
road
O
Gavel
road
O
Muddy
road
O
Sandy
place
Cl
Others
d)
Road
surface
D
Dry
D
Wet
O
New-fallen
snow
O
Compressed
snow
O
Frozen
slope
O
Others
13
Page 43 of 3342
4-4d
[TSao]
BRAKES
[ABS
5
.3i
TYPE]
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
Condition
a)
Brakes
Deceleration
:
g
O
Continuous
/
Olntermittent
b)
AcceleratorAcceleration
:
g
O
Continuous
/
O
Intermittent
c)
Vehicle
speed
km/h
MPH
O
Advancing
O
Accelerating
O
Reducing
speed
O
Low
speed
O
Turning
D
Others
d)
Tire
inflation
pressure
Front
RH
tire
:
kPa
Front
LH
tire
:
kPa
Rear
RH
tire
:
kPa
Rear
LH
tire
:
kPa
e)
Degree
of
wear
Front
RH
tire
Front
LH
tire
Rear
RH
tire
Rear
LH
tire
f)
Genuine
parts
are
used
.:
Yes
/
ONo
g)
Chain
is
passed
around
tires
.:
Yes
/
DNo
h)
T
tire
is
used
.:
Yes
/
ONo
i)
Condition
of
suspension
alignment
j)
Loading
state
k)
Repair
parts
are
used
.
:
OYes
/
ONo
What
I)
Others
14
Page 44 of 3342
![SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
[T6D1]4-4d
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
Diagnosisconnector
--J
-\
o
o
Diagnosis
terminals
3
terminal
6
terminal
/
B4M0082D
C
:
INSPECTION
MODE
R SUBARU LEGACY 1997 Service Repair Manual
BRAKES
[ABS
5
.31
TYPE]
[T6D1]4-4d
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
Diagnosisconnector
--J
-\
o
o
Diagnosis
terminals
3
terminal
6
terminal
/
B4M0082D
C
:
INSPECTION
MODE
R](/manual-img/17/57434/w960_57434-43.png)
BRAKES
[ABS
5
.31
TYPE]
[T6D1]4-4d
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
Diagnosisconnector
--J
-\
o
o
Diagnosis
terminals
3
terminal
6
terminal
/
B4M0082D
C
:
INSPECTION
MODE
Reproduce
thecondition
underwhich
the
problem
has
occurred
as
much
as
possible
.
Drive
the
vehicle
at
a
speed
more
than40
km/h
(25
MPH)
forat
least
one
minute
.
D
:
TROUBLE
CODES
When
on-board
diagnosis
of
the
ABS
control
module
detects
a
problem,
the
information
(up
to
a
maximum
of
three)
will
be
stored
in
the
EEP
ROM
asa
trouble
code
.
When
there
are
more
than
three,
the
most
recent
three
will
be
stored
.
(Stored
codes
will
stay
in
memory
until
they
are
cleared
.)
1
.
CALLING
UP
A
TROUBLE
CODE
1)
Take
out
diagnosis
connector
from
side
ofdriver's
seat
heater
unit
.
2)
Turn
ignition
switch
OFF
.
3)
Connect
diagnosis
connector
terminal
6
to
diagnosis
terminal
.
4)
Turn
ignition
switch
ON
.
5)
ABS
warning
light
is
set
in
the
diagnostic
mode
and
blinks
toidentify
trouble
code
.
6)
After
the
start
code
(11)
is
shown,
the
trouble
codes
will
be
shown
in
order
of
the
last
information
first
.
These
repeat
for
a
maximum
of
5
minutes
.
NOTE
:
When
there
are
no
trouble
codes
in
memory,
only
the
start
code
(11)
is
shown
.
Example
of
code
indication
Trouble
code
:
21
ON
111
1
2
1
1
2
OFF
~'2
sec
1
.0s
ec
1
.2
sec
1.2
sec
1
.0
sec
U
~~
U
U
L
.-J
0
.3
sec
0
.3
sec
0
.3
sec
Start
code
Trouble
code
21
Start
code
Trouble
code
21
Trouble
code
:
22,
31
ON
1
1
22
3
1
11
OFF
Start
code
Trouble
code
22
Trouble
code
31Start
code
B4M0232A
15
Page 45 of 3342
4-4d[T6D2]
BRAKES
[ABS
5
.3i
TYPE]
6
.
Diagnostics
Chart
for
On-board
Diagnosis
System
Diagnosis
connector
-J
_
~\~
°°
Diagnosis
terminals
3
terminal
6
terminal
/
84M00820
2
.
CLEARING
MEMORY
1)
After
calling
up
a
trouble
code,disconnect
diagnosis
connector
terminal
6from
diagnosis
terminal
.
2)
Repeat
3
times
within
approx
.
12
seconds
;
connecting
and
disconnecting
terminal
6
and
diagnosis
terminal
for
at
least
0
.05
seconds
each
time
.
Trouble
code
indication
mode
Memory
erase
mode
ABS
warning
lamp
GND
(Low
level)
U
U
GND
open
(High
level)
Terminal
6
Ad
.1
.4
1.5
sec
0
.2
sec
or
more
0
.05
sec
or
more
12sec
or
less
B4M0233D
NOTE
:
After
diagnostics
is
completed,
make
sure
to
clear
mem-
ory
.
Make
sureonly
start
code
(11)
is
shown
after
mem-
ory
is
cleared
.
16
Page 46 of 3342
4-4d
R7ao1
BRAKES
[ABS
5
.3i
TYPE]
7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure
7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure
A
:
ABS
WARNING
LIGHT
DOES
NOT
COME
ON
.
DIAGNOSIS
:
e
ABS
warning
light
circuit
is
open
or
shorted
.
TROUBLE
SYMPTOM
:
e
When
ignition
switch
is
turned
ON
(engine
OFF),
ABS
warning
light
does
not
come
on
.
WIRING
DIAGRAM
:
Fuse
No
.
12
Fuse
F49
f2
B100
ABS
control
module
and
hydraulic
control
unit
c
:
i14
No
.15
L
ABS
Combination
meter
881
0
Diagnosis
°
E
connector
Diagnosis
terminal
IGNsw
SBF-4
FL1.25B
Fuse
SBF-3
No
.19
882
8100
01
11
12
11
1
1
ID
M
131415161
i2
1
4
10
11
1
13141
1
i14
1
11
11
f49
123456789101112131415
16171819
20
2122
23
24252627
1
28
1
29
1
30
13
11
rw
am
84M1230
18
Page 47 of 3342
BRAKES
[ABS
5
.31
TYPE]
[T7A3]
4-4d
7
.
Diagnostics
Chart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure
B1
2345
678910
1112
1
13
1
14
1
15
1
16
1
17
1
18
1
19
.
)
D
V
-
B4M1273A
I7A1
ICHONECK
IF
OTHER
WARNING
LIGHTS
TURN
Turn
ignition
switch
to
ON
(engine
OFF)
.
CHECK
:
Do
other
warning
lights
turn
on?
,rES
:
Go
to
step
7A2
.
No
:
Repair
combination
meter
.
7A2
I
CHECK
ABS
WARNING
LIGHT
BULB
.
1)
Turn
ignition
switch
to
OFF
.
2)
Remove
combination
meter
.
3)
Remove
ABS
warning
light
bulb
from
combination
meter
.
CHECK
:
Is
ABS
warning
light
bulb
OK?
,mss
:
Go
to
step
7A3
.
No
:
Replace
ABS
warning
light
bulb
.
7A3
CHECK
BATTERY
NG
LIGHT
HARNESS
SHO
RT
OF
ABS
WARN-
1)
Disconnect
connector
(B100)
from
connector
(F2)
.
2)
Measure
voltage
between
connector
(B100)
and
chas-
sis
ground
.
Connector
&
terminal
(B100)
No
.
9
(+)
-
Chassis
ground
(
)
:
CHECK
:
Is
thevoltage
less
than
3
V?
vES
:
Go
to
step
7A4
.
No
:
Repair
warning
light
harness
.
19
Page 48 of 3342
4-4d
[r7aa1
BRAKES
[ABS
5
.31
TYPE]
7
.
DiagnosticsChart
for
ABS
Warning
Light
Circuit
and
Diagnosis
Circuit
Failure
2345
67890
B1~
1
11
1
12
1
13
1
14
1516
171819
1:
)
D
84M1273A
7A4
CHECK
BATTERY
NG
LIGHT
HARN
SSORT
OF
ABS
WARN-
1)
Turn
ignition
switch
to
ON
.
2)
Measure
voltage
between
connector
(B100)
and
chas-
sis
ground
.
Connector
&
terminal
(8100)
No
.
9
(+)
-
Chassis
ground
(
)
:
CHECK
:
is
voltage
less
than3
V?
YES
:
Go
to
step
7A5
.
No
:
Repair
warning
light
harness
.
7A5
CHECK
WIRING
HARNESS
.
1)
Turn
ignition
switch
to
OFF
.
2)
Install
ABS
warning
light
bulb
from
combination
meter
.
3)
Install
combination
meter
.
4)
Turn
ignition
switch
to
ON
.
5)
Measure
voltage
between
connector
(B100)
and
chas-
sis
ground
.
Connector
&
terminal
(B100)
No
.
9
(+)
-
Chassis
ground
(-)
:
CHECK
:
Is
voltage
between
10
V
and
15
V?
,rES
:
Go
to
step
7A6
.
No
:
Repair
wiring
harness
.
20