1996 SUBARU LEGACY oil pressure

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[Tiq2]
2-

1
.
General

1~
Engine
control
module
(ECM)
~
Radiator
fan

~2
Ignition
coil~s
Radiator
fan
relay

~3
Ignitqr
~s
Pressure
sources
switching
solenoid
valve

~4
Crankshaft
position
sensor
~
Knock
sensor

~5
Camshaft
position
sensor
~
Back-pressure
transducer

Throttle
position
sensor
~s
Front
oxygen
sensor

~7
duel
injectors
~o
Rear
oxygen
sensor
(Except
California
model)

~8
Pressure
regulator
~
Pressure
sensor

Engine
coolant
temperature
sensor
~z
A/C
compressor

~o
Mass
air
flow
sensor
~
Inhibitor
switch

Idle
air
control
solenoid
valve
~
CHECK
ENGINE
malfunction
indicator
lamp
(MIL)

~z
Purge
control
solenoid
valve
~
Tachometer

0
Fuel
pump
~s
A/C
relay

0
PCV
valve
~
A/C
control
module

~s
Air
cleaner
~eIgnition
switch

Canister
~
Transmission
control
module
(TCM)

~
Main
relay
~o
Vehicle
speed
sensor
2

~a
Fuel
pump
relay
~
Data
link
connector
(For
Subaru
select
monitor)

~s
Fuel
filter
@
Data
link
connector
(For
Subaru
select
monitor
and

~o
Front
catalytic
converter
OBD-II
general
scan
tool)

Rear
catalytic
converter
@
Two
way
valve

~2
MGR
valve
~a
Rear
oxygen
sensor
(California
model
only)

EGR
control
solenoid
valve
~
Filter

3

2-7
[T2A3]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

2
.
Electrical
Components
Location

3
.
SOLENOID
VALVE,
EMISSION
CONTROL
SYSTEM

PARTS
AND
IGNITION
SYSTEM
PARTS

osoooose

Pressure
sources
switching
solenoid
valve
OS
Purge
control
solenoid
valve

(k
Idle
air
control
solenoid
valve
06
Ignitor
~3
EGR
valve
(~7
Ignition
coil
4
EGR
control
solenoid
valve

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[Tsn2i
2-7

6
.
Wiring
Diagram
and
Wiring
Harness

FWD
switch
(AWD)

B9
ffl

Droppig
Cruise
resistor
cont
rol
modu
le

OBD-II
Data
link
serviceCheck
connectorconnectorconnector

B78
ERB40
0
B79
m
B4
E
K
E
)

w
7
OEs
o
-
-
-
------------------
-
------
-
-
L
a
....

c
H
0
U
It

C
Y
0
.N
;W
Rr
06
N

BI1
T41
Ref
.
to
/Engine
electrical
system
.

a
:
B54

b
:
B55

c
:
856

She
ild
joint
connector
884

~

WK
LZIM
WL

B53
Engine
control
B9(B
I
ac
k)
module
1
2

854
(B
I
ac
k)
B79
(Grey)

1
23456
1
23
45
67
7
1
8
1
9101112
8
910
1112
1
13
1
14
r,

Bll
(Grey)
(B
I
ac
k)
B56894
(B
I
aCk)

34

S

78

D

q
Oil
2
9
Pl
.
12131415,91617
la19
110
I
5
16
1
3
14
1111121131141151161171161191201

AT
contro
I
------------
a
,,
Vehicle
speed
i(Transmission)
___
_____
__
__
sensor
1

ATF
temperature
sensor
Line
pressuresolenoid

Lock-up
solenoid

AWD
solenoid

Shift
solenoid
1

Shift
solenoid
2

Shift
solenoid
3

R3
Throttle
~-Cz'1
R~l
position
sensor

B2l
E2
El3

O
(Gray)
E13
(Brown)
853
B78
(Y
e
II
ow)

12
123
1234
56789

B55
(B
I
ack)
(
ED
(Grey)

12345678
12345678
9~011t213141St6
91111213141516

864
(L
i
ght
b
I
ue)

12
345678
9l0
lll21314
1516
I7l8l9
20
2122
23
24
2627282930
3132
3334
35
3637383940
4142
43
44
454647
1
48
1
49
~
0
1
51
2
15
3
15
4
~
5
1
56
15
7
8596061626364656667686970
7172
73
1
74
1
75
1
76
1
77
78
1
79
1
60
1
81
B
1
132
1
83d
8485
86
87888990
9192
93
94
9596

BUR41-02B

55

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[Tyooyl
2-7
10
.
General
Diagnostics
Table

10
.
General
Diagnostics
Table

1
.
FOR
ENGINE

1
23
4
5678
9
10
11
1213

N

ONCdN
C
O
O
a
x
m

Problem
parts
`o
m
v

mj
4'S
O
1>j
T
N
dm
G

~
ON

41
m
~
!d
V
P]
7
0
E
m
~n
N
~o
C
o
O
d
~
~
U
O
c
m~
C
.
.
.
V1
ON
aVa
U
3
C~
0

"

y
dO1OyOQ
~
"O
CN
d7

O
"
0va
l0
0CdyGo
>
"
Vd
da
E
U
"
O
l0
ymC
~
O
NC
N
V
V
4)
N
~
'C
C
.2
7
a
3NmC
oi
mm
o
W
m
.
mU
o~
Symptom
2WFU~Ya
LL
.0
ti
QW

1
Engine
stalls
during
idling
.
O4OOOOO

2
Rough
idling
O
4O
Cl
OO

3
Engine
does
notreturnto
idle
.
O
OO

4Poor
acceleration
O4OOOOO

Engine
stalls
or
engine
sags
or
hesi-
O
D
OOOOOO
fates
at
acceleration
.

6
Surge
O4OOOO

T
Spark
knock
OOOO

8
After
burning
in
exhaust
system
O
Lr
I
O
I

'1
:
The
mark,
D,
indicates
the
symptom
occurring
only
in
cold
temperatures
.

'2
:
For
itemswiththe
mark,
D,ensure
the
secure
installationof
crankshaft
position
sensor
and
camshaft
position
sensor
.

Replacement
is
not
necessary
.

'3
:
Check
fuel
injector,
fuel
pressure
regulator
and
fuel
filter
.

'4
:
Check
ignitor,
ignition
coil
and
spark
plug
.

NOTE
:

Malfunction
of
partsother
than
the
above
is
also
possible
.
Refer
to
1
.
Engine
Trouble
in
General
[K100]
in
Repair
Section
2-3
of

the
Service
Manual

69

3-2
[TSAO1
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

6
.
Diagnostic
Chart
for
On-board
Diagnostics
System

6
.
Diagnostic
Chart
for
On-board

Diagnostics
System

A
:
BASICDIAGNOSTIC
PROCEDURE

TROUBLE
OCCURS
.

INTERVIEW

1
.
Oil
level
check
<
Ref
.
to
3-2

[W2A1],
[W2A2]
.*1
>

2
.
Oil
leak
check
<
Ref
.
to
3-2

[W2A3]
.x`r1
>

3
.
Brake
band
adjustment
<
Ref
.

to
3-2
[W2B1]
.t`r1
>

4
.
Stall
test
<
Ref
.
to
3-2

[W3A0]
.*1
>

5
.
Line
pressure
test
<
Ref
.
to
3-2
[W3C0]
.*1
>

6
.
Transfer
clutch
pressure
test
<
Ref
.
to
3-2
[W3D0]
.*1
>

7
.
Time
lag
test
<
Ref
.
to
3-2

[W3B0]
.*1
>

8
.
Road
test

<
Ref
.
to
3-2
[W3E0]
.*1
>

BASIC
CHECKS

TROUBLE
INDICATION
(AT
OIL
TEMP
INDICATOR)

Not
indicated
.

Indicated
.

ON-BOARD

DIAGNOSTICS

Inspection
using
General

Diagnostic
Table
[T900]*I
.

I

Inspection
using
Diagnostic

Chart
with
Select
Monitor

[T800]*1,
*2
.

Not
OK

No
trouble
code

Trouble
code

Repair
.

CLEAR
MEMORY

Confirmation
test
Trouble
code
(ON-BOARD
DIAGNOSTICS)

No
trouble
code

End

Check
in

accordance

trouble
code

[T700]*1,
*2
.

2

6-3
[D6013]
WIRING
DIAGRAM

6
.
Wiring
Diagram

Shield
joint
connector

rE
~
;EB
(
883

E2

B21

Ref
.
toAT
control
system
.

Pressuresensor

....

Englnecontro
I
gg4
module

....

B22

E3

(California
model)

B3
~+~M
B13

Mass
air
Ignitor
flowsensor

(Brown)
E18
E8
(Brown)
(B
I
ack)
B2
E13
(Brown)

12
123

B3
(Grey)
Bl3
(Gray)

12345123456

Ell
(Gray)

123

B21
(L
i
ght
gray)

1234
5678
9
10
ll
l2

Ell

Ignition
coil

883

1234

B22
(L
i
ght
gray)

1
234
S678
9
101112
1
41516
3
fili

BURIO-03C

Eng
i
ne
Throttle
coolant
position
Knock
temperature
E
.
G
.
R
.
sensor
sensor
sensor
solenoid

1
:1
I---I
[--J
[--J

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