SUBARU LEGACY 1996 Service Manual PDF
Page 71 of 2890
2-7
[TSCO3
ON-BOARD
DIAGNOSTICS
II
SYSTEM
8
.
Diagnostics
for
CHECK
ENGINE
Malfunction
Indicator
Lamp
(MIL)
C
:
CHECK
ENGINE
MALFUNCTION
INDICATOR
LAMP
(MIL)
DOES
NOT
BLINK
AT
A
CYCLE
OF
3
HZ
.
WIRING
DIAGRAM
:
Combination
meter
C14
)
Ignition
B37
i2
No
.
15
switch
SBF-4
FL
1
.25
ECM
a
875
B76
822
E3
E
884
9
10
11
1
121
U
1314
U
1516
43
44
3132
33
34
3536
1
3/
1
38
1
39
1
40
1
41
1
42
1
585960
6162
63
1
64
1
65
1
66
1
67
1
68
1
69
1
70848586
87
8889
1
90
1
91
1
92
1
93
1
94
1
9
51
96
B75B76
i2
i14
It~l
~
12345
67
910
LJ
1
11
1
12
1
13
1
14
1
15
1
16
1
11
1
12345678910111213
822
1234
8
1
11
1
1
141
i6
B2M0511
NOTE
:
For
the
diagnostic
procedure
on
indicator
lamp
(MIL)
does
not
blink
at
a
cycle
of
3
Hz,
refer
to
2-7
[T7C0]*2
.
60
Page 72 of 2890
ON-BOARD
DIAGNOSTICS
II
SYSTEM
(78D0]
2-7
8
.
Diagnostics
for
CHECK
ENGINE
Malfunction
Indicator
Lamp
(MIL)
D
:
CHECK
ENGINE
MALFUNCTION
INDICATOR
LAMP
(MIL)
REMAINS
BLINKING
AT
A
CYCLE
OF
3
Hz
.
WIRING
DIAGRAM
:
Combination
meter
i14
B84
Ignition
B37
('52)
switch
No
.
15
ECM
B75
B76822
E3
E
815876
i2
i14
822
910
1112
13141516
1
4
31
2333435
36
1
37
1
3839
1
1040
43
44
56
W7
11
585960
6162
63
64
6566
619
70
~
1~
1
234689
10
1
4858687888990
9192
93949596
IJ
11
1213141516171819
20
2122
11
1
2
1
3
1
4
1
5
1
6
1
78
9
10111213
B2M0511
NOTE
:
For
the
diagnostic
procedure
on
indicator
lamp
(MIL)
remains
blinking
at
a
cycle
of
3
Hz,
referto
2-7
[T7D0]*2
.
61
Page 73 of 2890
2-7
[rseo1
ON-BOARD
DIAGNOSTICS
II
SYSTEM
9
.
Diagnostics
for
Engine
Starting
Failure
9
.
Diagnostics
for
Engine
Starting
Failure
B
:
STARTER
MOTOR
CIRCUIT
WIRING
DIAGRAM
:
B2M0830
NOTE
:
For
the
diagnostic
procedure
on
starter
motor
circuit,
refer
to
2-7
[T8B0]*2
.
62
O
Bit
6
135
2
1103
4
R121363113al
131,
414
4470
10111
Page 74 of 2890
ON-BOARD
DIAGNOSTICS
II
SYSTEM
trscoi
2-7
9
.
Diagnostics
for
Engine
Starting
Failure
C
:
CONTROL
MODULE
POWER
SUPPLY
AND
GROUND
LINE
WIRING
DIAGRAM
:
Main
relay
0
0
B47
To
idle
air
control
solenoid
valve,purge
control
SBF-2
solenoid
valve
etc
.
B84
ECM
B22
O
E
L1
O
B47
B22
1234
24252627282930
55
1
56
1
57
40
1
41
1
42
1
43
1
44
1
1
1
7Q
!
1
1
1
6
34
91D1112
5
1
§4§5
56
13141516
82M0782
NOTE
:
For
the
diagnostic
procedure
on
control
module
power
supply
and
ground
line,
referto
2-7
[T8C0]~r2
.
1
2
34U
56
U
78
UU9
10
U
1112
U
1314
01516
171
B
19
202122
23
3132
33
3
3536
37
38
39
45
71
46477273484974
75
50
51
16775253787954BO
81
82B3585984BS60
61
868762638B8964
65
90
91
6667
92
936
63
Page 75 of 2890
2-7
[79D0]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
9
.
Diagnostics
for
Engine
Starting
Failure
D
:
IGNITION
CONTROL
SYSTEM
WIRING
DIAGRAM
:
Ignitor
884813
-
B62
ECM
E
00EII
2
_1
~"',
IgQition
t
t
Coll
910
1112
131415163132
3334
35
36373940
4142
4344
F
5859606162
5IF67
8
7
84
86187
8
18919019119219319419519
U
//Ii
U
(P
(ED(9)
a
1234
6
78
9101112
13141516
1112137415161
111
M23
1321V10522
NOTE
:
For
the
diagnostic
procedure
on
ignition
controlsystem,
referto
2-7
[T8D0]*2
.
64
F45~~_
,
~
IG
"I
Page 76 of 2890
ON-BOARD
DIAGNOSTICS
11
SYSTEM
[M0]
2-7
9
.
Diagnostics
for
Engine
Starting
Failure
E
:
FUEL
PUMP
CIRCUIT
WIRING
DIAGRAM
:
Fuel
pump
#F
S
.M
.J
.
A57R15
R1
B97
N7--
E
Fuel
pump
relay
0
7
SBF-2
~-
No
.16
IG
-L
862F45
cL
.M
O
111213111516
R5B
Ri5
B46
*9
3637
39
412
4344
1
23
1
2
1
2
636466
67
6869
70
4
56
345634
8889
90
9192
9
96
u
SBF-4
~5
12345
69
1112131
15161718192
10
B2M0783
NOTE
:
For
the
diagnostic
procedure
on
fuel
pump
circuit,
refer
to
2-7
[T8EOj*2
.
65
Page 77 of 2890
2-7[T9F0]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
9
.
Diagnostics
for
Engine
Starting
Failure
F
:
FUEL
INJECTOR
CIRCUIT
WIRING
DIAGRAM
:
Main
relay
0
0
847
SBF-2
884
B22
E3E6
E11
#3
tt4
E5
E16
ECM
#1
#2
B84B22847E5
E6
E16E17
11
1234
34
678
1
[
1
2
903
9
101112
34
9
13141
i6
82M0784
NOTE
:
Forthe
diagnostic
procedure
on
fuel
injector
circuit,
refer
to
2-7
[T10Q0]*2
.
66
Page 78 of 2890
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
Page 79 of 2890
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
Page 80 of 2890
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