1996 SUBARU LEGACY sensor

2-7
tT5o21
ON-BOARD
DIAGNOSTICS
II
SYSTEM
5
.
Specified
Data

CT
il
Signal
(V)

Content
onnector
erm
na
I9nition
SW
ON
Note
No
.
No
.
(Engine
OFF)Engine
ON
(Idling)

Rear
oxygen
sensor
B84
37
0-1
.0
0-1
.0
-
heater
signal

AT
diagnosis
input
B84
80
Less
than
1
.-
.
More
Less
than
1
+-+
MoreWaveform
signal
than4
than
4

GND
(sensors)
B84
200
0
-

i
B
469
GND
(
njectors)
80
0
-
95

GND
(ignition
system)
B84
940
0
-

ND
l
B
4
19
(powersupp
y)
G
800
-
46
17
GND
(control
systems)
B84
00
-
18

GND
(oxygen
sensor
B84
4200
heater)

2
.
ENGINECONDITION
DATA

Content
Specified
data

i
fl
M
1.7
-
3
.3
(g/sec)
:
Idling
r
ass
a
ow
7
.1
-
14
.2
(g/sec)
:
2,500
rpm
racing

E
il
d
1.6
-
2
.9
(%)
:
Idling
ng
neoa
6
.4
-
12
.8
(%)
:
2,500
rpm
racing

Measuring
condition
:

"
After
warm-up
theengine
.

"
Gear
position
is
in
"N"
or
"P"
position
.

"
A/C
is
turned
OFF
.

All
accessory
switches
are
turned
OFF
.

46

2-7
(T6A1]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

6
.
Wiring
Diagram
and
Wiring
Harness

Combination
mete

Tachometer
il0
:e

i
12
:
b

Malfunction
I
il4
:c
indicator
~--
lamp

Speedometer
circuit

ill

Main
relay
~`1
o
B47
Twi
sted
wire

0

846
E

:~~M
R
Fuel
pump
relay

6
.
Wiring
Diagram
and
Wiring
Harness

A
:
WIRING
DIAGRAM

1
.
ENGINE
ELECTRICAL
SYSTEM

To
Power
Supply
Routing

FB-20
~

FUSE
Na
15

MB-3

SBF-2

FB-4

FUSE
Na
l6

ST

IG
SW

FB-22

FUSE
Na
15
I2
B37

i3
B39

S
.
M
.
J
.
[Refer
to
foldout
page
.)

R58R57RIS

Fuel
pump

Inhibitor
switch

812
F45
B62

Check
connector
a
v
879

mvov-~o
M
PPm
M
f~
vrn
f~
Om
.O

Enginecontro
I
B84
module

14001

B97B17

Rl

Vehicle
speed
sensor
2

g7
(B
I
ac
k)
i
It
(g
)(Green)
Rl5
(B
I
ec
k)
R58

1212
123
34
3456
456

i
14
(L
1
ght
gray)
I101l2
(L
I
ght
gray)

12345678910111213
123456789101111314116

50

B47
(Brown)
B12
(Gray)

1
2
1
23
4345
67
8
5
69
1011
12

F45
B79
(Gray)

1
23
4567
8
910
11121R314

(2
i3
(Brown)

2345
6789
1234
678910
1'1
11
1
1
1
13
1
14
1
15
1
16
1
17
1
18
1
19
1
20,011
1
12
1
13
1
14
1
1
51
16
1
17
1
18
1
19
1
20
1
21
1
22
1

BUR10-02A

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

6
.
Wiring
Diagram
and
Wiring
Harness

Engine
Shield
Boost
Throttle
coolant
joint
sensorposition
Knock
temperature
E
.G.R
.
connector
sensor
sensor
sensor
solenoid

BB3
FF
R
I
B2
H
I
(
:
P
P
(:
9
)
PEE
(
ED
EH
(
9
)

....

E2

821

Ref
.
toAT
control
system
.

Enginecontro
I
B84
module

....

822

E3

B3

Mess
air
flowsensor

.
.
..
..
..
III

(Ca
I
(forn
(a
mode
I)
arri

813
m
EE

Ignitor
O

(Brown)
El8
E8
(Brown)
(B
I
eck)
B2
El3
(Brown)

12
123

B3
(Grey)(
ED
(Grey)

1234
123456

52

Ell
(Gray)

123

B2l
(L
i
ght
gray)

1234
5678
910U12

Ell

Ignition
coil

B83

1234

B22
CL
i
ght
gray)

1234
5678
9
1011
12
13141516

BUR10-02C

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[TSAy]
2-7
6
.
Wiring
Diagram
and
Wiring
Harness

CrankshaftCamshaftpositionposition
sensorsensor

E10
I
E15

....
.
.
...
1
11
_..
.
..
._.J
r--
..

U)
33
3
:
E
1

------------

-----------
-

m
M
~
B20
V1

1I1III
_
1

y
P
Iu+IN'"I
INI
II

Engine
control
B84
module

v
M
~~l
c
o
JJ
a
J
L
m
m
J3

F

Y
J
J
J
J

P1
H

JJ
L
m
;
~N
E3

4

}E17
~~
Eb
~
E16
~
E5
3E7
~~
A
E4

#4
#3#2
#1
Fuel
(nJector

Ely
(Dark
grey)

E10
(Gray)

12

E4
(B
I
ue)
E7
(Gray)
B20
(L
i
ght
grey)

12
123
123
456

BUR10-02D

Idle
air
control
Purge
control
solenoid
valve
solenoid
valve

B84
(Light
blue)

1
2
LI3
4
U
5
6U78U
1112
0
1314
1J
1516
1718
1920
21
22
23
24
252627282930
1
31
1
32
1
33
1
34
1
35
1
36~
1
37
1
38
1
39
1
401
41
1421
43
44
45
1
46
1
47
1
48
1
49
1
5
0
1
51
1
52
1
53
1
54,
~
5
1
56
1
57
1
8
626364
65
bb
6768
69
7071
7273
74
75
7
6
77
78
79
80
81
B283
1
84
1
65
1
86
1
87
1
88
1
89
1
90
1
91
1
92
1
93
1
94
1
95
1
96

(L
(
ght
gray)
E5
El6
(L
(
ght
gray)
(Darkgray)
E6
(O
(Dark
grey)

12

53

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
[T9G0]
2-7
9
.
Diagnostics
for
Engine
Starting
Failure

G
:
CRANKSHAFT
POSITION
SENSOR
CIRCUIT

WIRING
DIAGRAM
:

B84
B20
E1

ECM
''--------

E10

Crankshaft
position
sensor

O

Crankshaft
sprocket

E84

B20
E10

1
23

456
12

1
23456
7
8

1718190
21
2
2324
28290

45
1
46
1
4
7
1
48
1
49
150

11
1
521
53
1
54
55
5657

7
1
721731
1
4
175
11
6
/
80
81
8283

B2M0529

NOTE
:

For
the
diagnostic
procedure
on
crankshaft
position
sen-

sor
circuit,
referto
2-7
[T1OZ0]*2
.

67

2-7
[T9H0]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

9
.
Diagnostics
for
Engine
StartingFailure

H
:
CAMSHAFT
POSITION
SENSOR
CIRCUIT

WIRING
DIAGRAM
:

B84

B20
E1

------------

ECM
T
..........
.r

E15
Camshaft
pulley

Camshaft
position
sensor

B84

B20E15
0

123
456
i2

82M0530

NOTE
:

For
the
diagnostic
procedure
on
crankshaft
position
sen-

0AA0]*2
.
sor
circuit,
referto
2-7
[T1

~

1

2

11

3

2

4

21

u
5

4

6
u
7
8

29

u

0

4546
47484950
51
5253545556
51

1
469
80
1
82
3

68

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