specifications SUBARU LEGACY 1997 Service User Guide

BRAKES
[ABS
5
.3i
TYPE]
IT8Y3J4-4d

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

`G/

Tn]
1
Mark

~-ABSCM&HlU
g4M1248A

P11

2
1

D

+V-

B4M0911
B

8YI
CHECK

TURNING

LL
FOUR
WHEELS
FOR
FREE

CHECK
:
Have
the
wheels
been
turned
freely
suchas

when
the
vehicle
is
lifted
up,
or
operatedon
a
rolling
road?

The
ABS
is
normal
.
Erase
the
trouble
code
.

Go
to
step
8Y2
.

CHECK
SPECIFICATIONS
OF
ABSCM&HIU
.

Check
specifications
of
the
mark
to
the
ABSCM&H/U
.

Mark
Model

C3
AWD
AT

C4
AWD
MT

1
'
he
an
dRSCM
fnr
dWn
MAIIPI
inciallprl
nna
FWD
model?

CAUTION
:

Be
sure
to
turn
ignition
switch
to
OFF
when
removing

ABSCM&H/U
.

,rES
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
8Y3
.

18Y3
I
CHECK
INPUT
VOLTAGEOF
G
SENSOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Remove
console
box
.

3)
Disconnect
G
sensor
from
body
.
(Do
not
disconnect

connector
.)

4)
Turn
ignition
switch
to
ON
.

5)
Measure
voltage
between
G
sensor
connector
termi-

nals
.

Connector
&
terminal
(P11)
No
.
1
(+)
-
No
.
3
(
)
:

CHECK
:
Is
thevoltage
between
4
.75
and
5
.25
V?

Go
to
step
8Y4
.

No
:
Repair
harness/connector
between
G
sensor
and

ABSCM&H/U
.

85

BRAKES
[ABS
5
.31
TYPE]
[T10H7]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

G4M0700

G4M0701

I
OH4
CHECK
ABS
SENSOR
GAP
.

Measure
tone
wheel-to-pole
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
to
step
10H5
.

No
:
Adjust
the
gap
.

NOTE
:

Adjust
the
gap
using
spacers
(Part
No
.
26755AA000)
.
If

spacers
cannot
correct
the
gap,
replace
worn
sensor
or

worn
tone
wheel
.

10H5
CHECK
HUB
RUNOUT
.

Measure
hub
runout
.

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

Go
to
step
10H6
.

No
:
Repair
hub
.

10H6
I
CHECKPOOR
CONTACT
IN
CONNECTORS
.
I

Turn
ignition
switch
to
OFF
.

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
10H7
.

I7Uli7
(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
the
current

diagnosis
still
being
output?

vES
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10H8
.

115

t
Sensor
gap

Sensor
gap

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
[TIoL9]
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

G4M0700I

G4M0701
I

10L9
I
CHECK
INSTALLATION
OFTONE
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
10L10
.

No
:
Tighten
tone
wheel
installation
bolts
securely
.
1
10L10
I
CHECK
ABS
SENSOR
GAP
.

Measure
tone
wheel
to
pole
piece
gap
over
entire
perim-

eter
of
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)

vES
:
Go
to
step
10L11
.

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
.
1
10L11
I
CHECK
OSCILLOSCOPE
.
I

CHECK
;
Is
an
oscilloscopeavailable?

,rES
:
Go
to
step
10L12
.

No
:
Go
to
step
10L13
.

1
10L12
I
CHECK
ABS
SENSOR
SIGNAL
.

1)
Raise
all
four
wheels
of
ground
.

2)
Turn
ignition
switch
OFF
.

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

nector
(B100)
in
accordance
with
trouble
code
.

4)
Turn
ignition
switch
ON
.

126

t
Sensorgap
Sensorgap

BRAKES
[ABS
5
.31
TYPE]
[T10M5]
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

iomi
CHECK

(FREE
Y'FOR

THE

AILONG
TIMEVE

TURNED

CHECK
:
Check
if
the
wheels
have
been
turned
freely

for
more
than
one
minute,
suchas
when
the

vehicle
is
jacked-up,
under
full-lock
corner-

ing
or
when
fire
is
not
in
contact
with
road

surface
.

,rES
:
The
ABS
is
normal
.
Erase
the
trouble
code
.

NOTE
:

When
the
wheels
turn
freelyfor
a
long
time,
such
as
when

the
vehicle
is
towed
or
jacked-up,
or
when
steering
wheel

is
continuously
turned
all
the
way,
this
trouble
code
may

sometimes
occur
.

No
:
Go
to
step
10M2
.

10M2
CHECK
TIRE
SPECIFICATIONS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Are
the
fire
specifications
correct?

,rES
:
Go
to
step
10M3
.

No
:
Replace
tire
.
1
10M3
I
CHECK
WEAR
OF
TIRE
.

Is
the
fire
worn
excessively?

vES
:
Replace
tire
.

No
:
Go
to
step
10M4
.
1
10M4
I
CHECK
TIRE
PRESSURE
.

CHECK
:
Is
the
fire
pressure
correct?

Go
to
step
10M5
.

No
:
Adjust
fire
pressure
.

1
10M5
I
CHECK
INSTALLATION
OF
ABS
SENSOR
.

Tightening
torque
:

32
f
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
10M6
.

No
:
Tighten
ABS
sensor
installation
bolts
securely
.

133

4-4d
[rionns1
BRAKES
[ABS
5
.31
TYPE]
10
.
Diagnostics
Chart
withSelect
Monitor

G4M0700
I

G4M0701
I

1
101111116
I
CHECK
INSTALLATION
OF
TONE
WHEEL
.

Tightening
torque
:

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

CHECK
:
Are
thetone
wheel
installation
bolts
tight-

ened
securely?

,rES
:
Go
to
step
10M7
.

No
:
Tightentone
wheel
installation
bolts
securely
.

CHECK
ABS
SENSOR
GAP
.

Measure
tone
wheel
to
pole
piece
gap
over
entire
perim-

eterof
the
wheel
.

CHECK
:
Is
the
gap
within
the
specifications
shown
in

the
following
fable?

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)

Go
tostep
10M8
.

No
:
Adjustthe
gap
.

NOTE
:

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

spacers
cannot
correct
the
gap,
replace
worn
sensor
or

worn
tone
wheel
.

1111011111118
1
CHECK
OSCILLOSCOPE
.
I

i
CHECK
:
Is
an
oscilloscope
available?

Go
to
step
10M9
.

No
:
Go
to
step
10M10
.

10M9
CHECK
ABS
SENSOR
SIGNAL
.

1)
Raise
all
four
wheels
of
ground
.

2)
Turn
ignition
switch
OFF
.

3)
Connect
the
oscilloscope
to
the
connector
(F1)
or
con

nector
(B100)
in
accordance
with
trouble
code
.

4)
Turn
ignition
switch
ON
.

134

Sensor
gap

Sensor
gap

BRAKES
[ABS
5
.31
TYPE]
[T11A0]
4-4d

11
.
General
Diagnostics
Table

11
.
General
Diagnostics
Table

A
:
SYMPTOMSAND
PROBABLE
CAUSES

Symptom
Probable
faulty
units/parts

9
ABSCM&H/U
(solenoid
valve)
e
ABS
sensor
e
Brake
(caliper
&
piston,
pads)
Vehicle
pulls
to
either
side
.
*
Wheel
alignment
e
Tire
specifications,
tire
wear
and
air
pressures
9
Incorrect
wiringorpiping
connections
Vehicle
instability
during
braking
9Road
surface(uneven,
camber)

e
ABSCM&H/U
(solenoid
valve)
e
ABS
sensor
Vehicle
spins
.
*
Brake
(pads)
9
Tire
specifications,
tire
wear
and
air
pressures
9
Incorrect
wiring
orpiping
connections

9
ABSCM&H/U
(solenoid
valve)
Brake
(pads)
Long
braking/stopping
distance
*
Air
in
brake
line
9Tire
specifications,
tire
wear
and
air
pressures
a
Incorrect
wiringor
piping
connections

9
ABSCM&H/U
(solenoid
valve,
motor)
Wheel
locks
.
*
ABS
sensor
*
Incorrect
wiringorpiping
connections

9
ABSCM&H/U
(solenoidvalve)9
ABS
sensor
Master
cylinder
Brake
dragging
*
Brake
(caliper
8
piston)
Parking
brake
Poor
braking
*
Axle
&
wheels
Brake
pedal
play

Long
brake
pedal
stroke
9
Air
in
brake
line
Brake
pedal
play

*
Suspension
play
or
fatigue
(reduced
damping)
Vehicle
pitching
*
Incorrect
wiring
or
piping
connections
Road
surface
(uneven)

9
ABSCM&H/U
(solenoid
valve)
9
ABS
sensor

Unstable
or
uneven
braking
~
Brake
(caliper
&
piston,
pads)
~Tire
specifications,
tire
wear
and
air
pressures
e
Incorrect
wiring
orpiping
connections
*
Road
surface
(uneven)

Excessive
pedal
vibration
*
Incorrect
wiring
or
piping
connections
Road
surface
(uneven)

*
ABSCM&H/U
(mount
bushing)
Noise
from
ABSCM&H/U
*
ABS
sensor
Brake
piping

a
RBSCM&
H/U
(mount
bushing)
e
ABS
sensor

Vibration
and/or
noise
(while
*
Master
cylinder

driving
on
slippery
roads)
Noise
from
front
of
vehiclee
Brake
(caliper
&
piston,
pads,
rotor)
Brake
piping
e
Brake
booster
&
check
valve
*
Suspension
playor
fatigue

e
ABS
sensor
a
Brake
(caliper
&
piston,
pads,
rotor)
Noise
from
rear
of
vehicle
9
Parking
brake
Brake
piping
e
Suspension
playor
fatigue

209

3. Engine Idle Speed
A: MEASUREMENT
1) Before checking idle speed, check the following:
(1) Ensure that air cleaner element is free from
clogging, ignition timing is correct, spark plugs are in
good condition, and that hoses are connected properly.
(2) Ensure that malfunction indicator light (CHECK
ENGINE light) does not illuminate.
2) Warm-up the engine.
G2M0096
3) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
CAUTION:
When connecting Subaru Select Monitor, turn ignition
switch to OFF.
4) Start the engine and measure engine speed.
NOTE:
Engine speed is indicated on Subaru Select Monitor by
selecting “MODE F04”.
G2M0097
NOTE:

When using the OBD-II general scan tool, carefully read
its operation manual.

When Subaru Select Monitor is not used, attach the
pickup sensor on tachometer (Secondary pickup type) to
#1 cylinder spark plug cord.

This ignition system provides simultaneous ignition for
#1 and #2 plugs. It must be noted that some tachometers
may register twice that of actual engine speed.
5) Check idle speed when unloaded. (With headlights,
heater fan, rear defroster, radiator fan, air conditioning, etc.
OFF)
Idle speed (No load and gears in neutral (MT) or N or
P (AT) position):
700±100 rpm
6) Check idle speed when loaded. (Turn air conditioning
switch to “ON” and operate compressor for at least one
minute before measurement.)
Idle speed [A/C“ON”, no load and gears in neutral
(MT) or N or P (AT) position]:
850±50 rpm
CAUTION:
Never rotate idle adjusting screw. If idle speed is out
of specifications, refer to General On-board Diagnosis
Table under “2-7 On-Board Diagnostics II System”.
3
2-2
3. Engine Idle Speed

B2M1228A
B: ADJUSTMENT
1. 2200 cc MODEL
CAUTION:
Adjustment of valve clearance should be performed
while engine is cold.
1) Set #1 cylinder piston to top dead center of compres-
sion stroke by rotating crankshaft pulley clockwise.
NOTE:
When arrow mark on camshaft sprocket (RH) comes
exactly to the top, #1 cylinder piston is brought to the top
dead center of compression stroke.
B2M1238A
2) Adjust the #1 cylinder valve clearance.
(1) Loosen the valve rocker nut and screw.
(2) Place suitable thickness gauge.
(3) While noting valve clearance, tighten valve rocker
adjust screw.
(4) When specified valve clearance is obtained, tighten
valve rocker nut.
Tightening torque:
10±1 N⋅m (1.0±0.1 kg-m, 7.2±0.7 ft-lb)
CAUTION:

Insert the thickness gauge in as horizontal a direc-
tion as possible with respect to the valve stem end
face.

Adjust exhaust valve clearances while lifting-up the
vehicle.
Valve clearance:
Intake: 0.20±0.02 mm (0.0079±0.0008 in)
Exhaust: 0.25±0.02 mm (0.0098±0.0008 in)
3) Ensure that valve clearances are within specifications.
4) Turn crankshaft two complete rotations until #1 cylinder
piston is again set to top dead center on compression
stroke.
5) Ensure that valve clearances are within specifications.
If necessary, re-adjust valve clearances.
14
2-2
7. Valve Clearance

B2M1233A
B2M1234A
10) Turn crankshaft pulley clockwise until arrow mark on
camshaft sprocket is set to position shown in figure.
11) Ensure that #1 cylinder intake valve and #3 cylinder
exhaust valve are adjusted to specifications.
CAUTION:

Insert the thickness gauge in as horizontal a direc-
tion as possible with respect to the shim.

Adjust exhaust valve clearances while lifting-up the
vehicle.
Valve clearance:
Intake: 0.20±0.02 mm (0.0079±0.0008 in)
Exhaust: 0.25±0.02 mm (0.0098±0.0008 in)
12) Turn crankshaft two complete rotations. Check again
to ensure that #1 cylinder intake valve and #3 cylinder
exhaust valve clearances are within specifications. If
necessary, re-adjust valve clearances.
B2M1235A
13) Further turn crankshaft pulley clockwise. Using the
same procedures as in step 11) above, measure valve
clearances.
(1) Set arrow mark on camshaft sprocket to position
shown in figure, and check #2 cylinder exhaust valve
and #3 cylinder intake valve clearances.
B2M1236A
(2) Set arrow mark on camshaft sprocket to position
shown in figure, and check #2 cylinder intake valve and
#4 cylinder exhaust valve clearances.
B2M1237A
(3) Set arrow mark on camshaft sprocket to position
shown in figure, and check #1 cylinder exhaust valve
and #4 cylinder intake valve clearances.
17
2-2
7. Valve Clearance