1997 SUBARU LEGACY oil pressure

8
.
Electrical
Wiring
Harness
and
Ground
Point

Connector
Connecting
to

No
.
Pole
Color
Area
No
.
Name

R17
1
Black
A-3
Rear
defogger
(Power)

R18
2
Black
B-3
Rear
speaker
RH

R19
2B-3
High-mounted
stop
light

R20
2
Blue
B-2
Trunk
room
light

R21
2
Black
B-2
Rear
speaker
LH

R22
1
Brown
B-1
Rear
door
switch
LH

R23
3
B-2
Power
antenna

R24
6B-3
R60
Trunk
lid
cord(Without
security
system)

8
B-3
R60
Trunk
lid
cord
(With
security
system)

R25
2
Black
B-4
Rear
defogger
condenser

R26
4
B-4
Rear
combination
light
RH

R27
2
B-4
Trunk
room
light
switch

R28
4
B-3
Rear
combination
light
LH

R45
6
B-4
Trailer
connector
(SUS
model)

R47
3B-3Fueltank
pressure
sensor

R60
6B-4
R24
Rear
wiring
harness
(Without
security
system)

8B-4
R24
Rear
wiring
harness
(With
security
system)

R61
3B-4
Key
switch
(Security)

R62
4B-4
Rear
finisher
light
RH

R63
2B-3
License
plate
light

R64
4B-3
Rear
finisher
light
LH

R65
1
Black
A-2
Rear
defogger(Ground)

R66
2
Black
B-4
E
High-mounted
stop
light
(Rear
spoiler)

'
:
Non-colored

3

A

B

C

D

8
.
REAR
END
WIRING
HARNESS
AND
GROUND
POINT
OF
SEDAN

1
1
2

1

3

R65

1
R17
,

R19

4

\
R66

GD
A
~
~
R45
i

O
~~`
R18
''r
~
R25

R21
~
~O
\

R22
O
R20
R24
R47
~---

R23R2g
'
:
R60
R62

o

GB-9
0

~~,
.~I
~~I)~1

B6M0104B

2
R63R26
R64R27

R61~

~
GB-9

3
[D808]

B6M0823A

4

A

B

C

D

BRAKES
IM13-21
4-4
13
.
Anti-lock
Brake
System
(ABS)
[5
.3i
Type]

2
.
FUNCTIONS
OF
SENSORS
AND
ACTUATORS

Name
Function

ABS
control
moduleand
hydraulic
ABSCM-
e
Calculates
and
determine
the
conditionsof
the
wheels
and
body
from
control
unit
(ABSCM&H/U)
section
the
wheel
speedsand
makes
a
proper
decision
suitable
for
the
current
situation
to
control
the
hydraulic
unit
.

In
the
ABS
operation
mode,
the
module
outputs
a
cooperative
control
signal
to
the
AT
control
module
.
(AT
vehicles
only)

Whenever
the
ignition
switch
is
placed
at
ON,
the
module
makes
a
self
diagnosis
.
When
anything
wrong
is
detected,
the
module
cuts
off
the
system
.

Communicates
with
the
Subaru
select
monitor
.

H/U-section
In
the
ABS
operation
mode,
the
H/U
changes
fluid
passages
to
control

the
fluid
pressure
of
the
wheel
cylinders
in
response
to
an
instruction
from
the
ABSCM
.

The
H/U
also
constitutes
thebrake
fluid
passage
from
the
master
cylin-
der
to
the
wheel
cylinders
together
with
pipings
.

Valve
relay-
Serves
asa
power
switch
for
the
solenoid
valve
and
motor
relay
coil
in
section
response
to
an
instruction
from
the
ABSCM
.

Motor
relay-
Serves
as
a
power
switch
for
the
pump
motor
in
response
to
an
instruc-
section
tion
from
the
ABSCM
.

Wheel
speed
sensor
(ABS
sensor)
Detects
the
wheel
speed
in
terms
of
a
change
in
the
magnetic
flux
den-
sity
passingthrough
the
sensor,
converts
it
into
an
electrical
signal,
and
outputs
the
electrical
signal
to
the
ABSCM
.

Tone
wheel
Gives
a
change
in
the
magnetic
flux
density
by
the
teeth
around
the
tone
wheel
to
let
the
ABS
sensor
generate
an
electrical
signal
.

G
sensor
(AWD
vehicle
only)
Detects
a
change
in
G
in
the
longitudinal
direction
of
the
vehicle
and
outputs
it
to
the
ABSCM
in
terms
of
a
change
in
voltage
.

Stop
light
switch
Transmits
the
information
on
whether
the
brakepedal
is
depressed
or
not
to
the
ABSCM
for
use
as
a
condition
in
determining
ABS
operation
.

ABS
warning
light
Alerts
the
driver
to
an
ABS
fault
.
When
the
diagnosis
connector
and
diagnosis
terminal
are
connected,
the
light
flashes
to
indicate
a
trouble
codes
in
response
to
an
instruction
from
the
ABSCM
.

AT
control
module
(TCM)
(AT
vehicles
only)
Provides
shift
controls
(fixing
the
speed
at
3rd
or
changing
front
and
rear
wheel
transmission
characteristics
on
4WD
vehicle)
in
response
to
an
instruction
fromthe
ABSCM
.

G2M0088
6. Engine Oil Pressure
A: MEASUREMENT
1) Remove generator from bracket.
(1) Disconnect connector and terminal from generator.
G2M0089
(2) Remove V-belt cover.
(3) Loosen lock bolt and slider bolt, and remove V-belt
for generator.
G2M0090
(4) Remove generator lock bolt.
(5) Remove bolt which install generator on bracket.
G2M0091
2) Disconnect connector from oil pressure switch.
3) Remove oil pressure switch from engine cylinder block.
7
2-2
6. Engine Oil Pressure

G2M0093
4) Connect oil pressure gauge hose to cylinder block.
5) Start the engine, and measure oil pressure.
Oil pressure:
98 kPa (1.0 kg/cm
2,14 psi) or more at 800 rpm
294 kPa (3.0 kg/cm2, 43 psi) or more at 5,000 rpm
CAUTION:

If oil pressure is out of specification, check oil
pump, oil filter and lubrication line.


If oil pressure warning light is turned ON and oil
pressure is in specification, replace oil pressure
switch.

NOTE:
The specified data is based on an engine oil temperature
of 80°C (176°F).
6) After measuring oil pressure, install oil pressure switch.
Tightening torque:
25±3 N⋅m (2.5±0.3 kg-m, 18.1±2.2 ft-lb)
7) Install generator and V-belt in the reverse order of
removal, and adjust the V-belt deflection.
8
2-2
6. Engine Oil Pressure

1. Engine
A: SPECIFICATIONS
EngineModel2200 cc
TypeHorizontally opposed, liquid cooled, 4-cylinder, 4-stroke
gasoline engine
Valve arrangement Belt driven, single over-head camshaft, 4-valve/cylinder
Bore x Stroke mm (in) 96.9 x 75.0 (3.815 x 2.953)
Displacement cm
3(cu in) 2,212 (135.0)
Compression ratio9.7
Compression pressure
(at 200 — 300 rpm) kPa (kg/cm
2, psi)1,079 — 1,275
(11.0 — 13.0, 156 — 185)
Number of piston rings Pressure ring: 2, Oil ring: 1
Intake valve timingOpening 4° BTDC
Closing 52° ABDC
Exhaust valve timingOpening 48° BBDC
Closing 12° ATDC
Valve clearanceIntake mm (in) 0.20±0.02 (0.0079±0.0008)
Exhaust mm (in) 0.25±0.02 (0.0098±0.0008)
Idling speed
[At neutral position on MT, or
“P” or “N” position on AT] rpm700±100 (No load)
850±50 (A/C switch ON)
Firing order1,3,2,4
Ignition timing BTDC/rpm 14°±8°/700 (MT), 20°±8°/700 (AT)
2
2-3SPECIFICATIONS AND SERVICE DATA
1. Engine

4. Cylinder Block
B2M0381A

1Oil pressure switch


2Cylinder block (RH)


3Service hole plug


4Gasket


5Oil separator cover


6Water pipe


7Oil pump


8Front oil seal


9Rear oil seal


10O-ring


11Service hole cover


12Cylinder block (LH)


13Water pump


14Baffle plate


15Oil strainer stay


16Oil strainer

17Gasket


18Oil pan


19Oil drain plug


20Gasket


21Oil filler pipe
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5 (0.5, 3.6)
T2: 6.4 (0.65, 4.7)
T3: 10 (1.0, 7)
T4: 25±2 (2.5±0.2, 18.1±1.4)
T5: 47±3 (4.8±0.3, 34.7±2.2)
T6: 69±7 (7.0±0.7, 50.6±5.1)
T7: First 12±2 (1.2±0.2, 8.7±1.4)
Second 12±2 (1.2±0.2, 8.7±1.4)
9
2-3COMPONENT PARTS
4. Cylinder Block

TROUBLE
Engine will not start.
Rough idle and engine stall
Low output, hesitation and poor acceleration
Surging
Engine does not return to idle.
Dieseling (Run-on)
After burning in exhaust system
Knocking
Excessive engine oil consumption
Excessive fuel consumption Starter does not turn.
Initial combustion does not occur.
Initial combustion occurs.
Engine stalls after initial combustion.
LUBRICATION SYSTEM
22 3 3Incorrect oil pressure
2Loosened oil pump attaching bolts and defective
gasket
2Defective oil filter seal
2Defective crankshaft oil seal
32Defective rocker cover gasket
2Loosened oil drain plug or defective gasket
2Loosened oil pan fitting bolts or defective oil pan
COOLING SYSTEM
33221Overheating
333Over cooling
OTHERS
113 3Malfunction of Evaporative Emission Control
System
21Stuck or damaged throttle valve
322 2Accelerator cable out of adjustment
77
2-3DIAGNOSTICS
1. Engine Trouble in General

2. Engine Noise
Type of sound Condition Possible cause
Regular clicking soundSound increases as engine
speed increases.Valve mechanism is defective.
Incorrect valve clearance
Worn valve rocker
Worn camshaft
Broken valve spring
Heavy and dull clankOil pressure is low.Worn crankshaft main bearing
Worn connecting rod bearing (big end)
Oil pressure is normal.Loose flywheel mounting bolts
Damaged engine mounting
High-pitched clank
(Spark knock)Sound is noticeable when
accelerating with an overload.Ignition timing advanced
Accumulation of carbon inside combustion chamber
Wrong spark plug
Improper gasoline
Clank when engine speed is
medium (1,000 to 2,000 rpm).Sound is reduced when fuel
injector connector of noisy
cylinder is disconnected.
(NOTE*)Worn crankshaft main bearing
Worn bearing at crankshaft end of connecting rod
Knocking sound when engine
is operating under idling speed
and engine is warm.Sound is reduced when fuel
injector connector of noisy
cylinder is disconnected.
(NOTE*)Worn cylinder liner and piston ring
Broken or stuck piston ring
Worn piston pin and hole at piston end of connecting rod
Sound is not reduced if each
fuel injector connector is
disconnected in turn. (NOTE*)Worn camshaft journal bore in crankcase
Squeaky sound—Insufficient generator lubrication
Rubbing sound—Defective generator brush and rotor contact
Gear scream when starting
engine—Defective ignition starter switch
Worn gear and starter pinion
Sound like polishing glass with
a dry cloth—Loose drive belt
Defective engine coolant pump shaft
Hissing sound—Loss of compression
Air leakage in air intake system, hoses, connections or
manifolds
Timing belt noise—Loose timing belt
Belt contacting case/adjacent part
Valve tappet noise—Incorrect valve clearance
NOTE*:
When disconnecting fuel injector connector, Malfunction Indicator Light (CHECK ENGINE light) illuminates and trouble code is stored in
ECM memory.
Therefore, carry out the CLEAR MEMORY MODE and INSPECTION MODE after connecting fuel injector connector. (Ref. to 2-7 On-Board
Diagnostics II System.)
78
2-3DIAGNOSTICS
2. Engine Noise