1997 SUBARU LEGACY ESP

4-4d
RioAH4l
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

1
10AH4
I
CHECK
ABSCM&H/U
.I

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
all
connectors
.

3)
Erase
the
memory
.

4)
Perform
inspection
mode
.

5)
Read
out
the
trouble
code
.

CHECK
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

vss
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AH5
.

10AH5
CHECK
ANY
I
APPEARANCE

.THER
TROUBLE
CODES

CHECK
:
Are
other
trouble
codes
being
output?

Proceed
withthe
diagnosis
corresponding
to
the
trouble
code
.

No
:
A
temporary
poor
contact
.

196

BRAKES
[ABS
5
.3i
TYPE]
R1oaia1
4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

G-
SENS
(F
10)

2
.30
V

B4M0927

I10A11
CHECK
OUTPUT

(SELECT
MONITORF

G
SENSOR
USING

1)
Press
[F],
[1]
and
[0]
on
the
select
monitor
.

2)
Read
the
select
monitor
display
.

CHECK
:
Is
theindicated
reading
2
.3
±
0
.2
V
when
the

G
sensor
isin
horizontal
position?

Go
to
step
10AI2
.

No
:
Go
to
step
10A16
.

2
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connector
between

A
.BSCM&HIU
and
G
sensor?
<
Ref
.
to
FORE-

WORD
(T3C1]
.*10
>

Repair
connector
.

No
:
Go
to
step
10AI3
.

diagnosis
still
being
output?

,rES
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AI4
.

10A13
I
CHECK
ABSCM&H/U
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
outthe
trouble
code
.

CHECK
:
Is
the
same
trouble
code
as
in
the
current

10A14
I
CHECK
ANY
OTHER
TROUBLE
CODES

APPEARANCE
.

Are
other
trouble
codes
being
output?

Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

199

4-4d
IT10AI10]
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
with
Select
Monitor

~10A110
I
CHECK
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
all
connectors
.

3)
Erase
the
memory
.

4)
Perform
inspection
mode
.

5)
Read
out
the
trouble
code
.

CHECK
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

,mss
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10A111
.

10A111
CHECK
ANY
I
APPEARANCE

.THER
TROUBLE
CODES

CHECK
:
Are
other
trouble
codes
being
output?

Proceed
withthe
diagnosis
corresponding
to
the
trouble
code
.

No
:
A
temporary
poor
contact
.

202

4-4d
(TyoAJs1
BRAKES
[ABS
5
.31
TYPE]
10
.
Diagnostics
Chart
with
Select
Monitor

1

E

1
21314151617181911011111211311411
JIS671
191201211221
1
23
1
24
1
25
1
26
75129136131
.1
.

-

1

2
t-
94M1261A_

110AJ5
I
CHECKPOOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connector
between

ABSCM&HlU
and
G
sensor?
<
Ref
.
to
FORE-

WORD
[T3C1]
.*10
>

,mss
:
Repair
connector
.

No
:
Go
to
step
10AJ6
.

diagnosis
still
bung
output?

,mss
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AJ7
.
(
10AJ6
I
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

10AJ7
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
temporary
poor
contact
.

10AJ8
I
pUT
HAR
NESS
AND
GROUND
HARNE
SS
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Measure
resistance
between
ABSCM&H/U
connector

terminals
.

Connector
&
terminal

(F49)
No
.
30
-
No
.
28
:

CHECK
:
Is
theresistance
between
4
.3
and
4
.9
kS2?

Go
to
step
f0AJ9
.

No
:
Repair
harness/connector
between
G
sensor
and

ABSCM&H/U
.

206

4-4d
[T1oAJ12]
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
Monitor

[
-k-
VO
J12
I
CHECK
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
all
connectors
.

3)
Erasethe
memory
.

4)
Perform
inspection
mode
.

5)
Read
out
the
trouble
code
.

CHECK
:
is
the
same
trouble
code
as
in
the
current

diagnosis
still
being
output?

.rES
:
Replace
ABSCM&H/U
.

No
:
Go
to
step
10AJ13
.

10AJ13
CHECK
ANY
OTHER
TROUBLE
CODES

APPEARANCE
.

CHECK
;
J
Are
other
trouble
codes
being
output?

,rES
:
Proceed
with
the
diagnosis
corresponding
to
the

trouble
code
.

No
:
A
temporary
poor
contact
.

208

When inspecting #2 and #4 cylinders;
(1) Disconnect battery cables, and then remove bat-
tery and battery carrier.
(2) Disconnect washer motor connectors.
(3) Disconnect rear window glass washer hose from
washer motor, then plug connection with a suitable cap.
(4) Remove the two bolts which holds washer tank,
then secure the tank away from working area.
(5) Disconnect spark plug cords from spark plugs (#2
and #4 cylinders).
(6) Remove under cover (LH).
(7) Place suitable container under the vehicle.
(8) Disconnect PCV hose from rocker cover (LH).
(9) Remove bolts, then remove rocker cover (LH).
B2M1228A
5) 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.
B2M1229A
6) Measure #1 cylinder valve clearance by using thickness
gauge.
CAUTION:

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

Measure 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)
7) If necessary, adjust the valve clearance. [07B1].>
10
2-2
7. Valve Clearance

B2M1230A
8) Similar to measurement procedures used for #1
cylinder, measure #2, #3 and #4 cylinder valve clearances.
NOTE:

Be sure to set cylinder pistons to their respective top
dead centers on compression stroke before measuring
valve clearances.

To set #3, #2 and #4 cylinder pistons to their top dead
centers on compression stroke, turn crankshaft pulley
clockwise 90°at a time starting with arrow mark on right-
hand camshaft sprocket facing up.
9) After inspection, install the related parts in the reverse
order of removal.
2. 2500 cc MODEL
CAUTION:
Inspection and adjustment of valve clearance should
be performed while engine is cold.
1) Set the vehicle onto the lift.
2) Disconnect battery ground cable.
3) Remove canister.
4) Remove one bolt which secures timing belt cover (RH).
5) Lift-up the vehicle.
6) Remove under cover (RH).
7) Remove canister bracket.
8) Loosen remaining bolts which secure timing belt cover
(RH), then remove belt cover.
9) Lower the vehicle.
B2M1225A
10) Remove rocker cover.

When inspecting #1 and #3 cylinders;
(1) Disconnect connector from mass air flow sensor.
11
2-2
7. Valve Clearance

B2M1233A
B2M1234A
11) Turn crankshaft pulley clockwise until arrow mark on
camshaft sprocket is set to position shown in figure.
12) Measure #1 cylinder intake valve and #3 cylinder
exhaust valve clearances by using thickness gauge.
CAUTION:

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

Measure 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)
13) If necessary, adjust the valve clearance. [07B2].>
B2M1235A
14) Further turn crankshaft pulley clockwise. Using the
same procedures as in step 12) above, measure valve
clearances.
(1) Set arrow mark on camshaft sprocket to position
shown in figure, and measure #2 cylinder exhaust valve
and #3 cylinder intake valve clearances.
B2M1236A
(2) Set arrow mark on camshaft sprocket to position
shown in figure, and measure #2 cylinder intake valve
and #4 cylinder exhaust valve clearances.
B2M1237A
(3) Set arrow mark on camshaft sprocket to position
shown in figure, and measure #1 cylinder exhaust valve
and #4 cylinder intake valve clearances.
15) After inspection, install the related parts in the reverse
order of removal.
13
2-2
7. Valve Clearance