1996 SUBARU LEGACY Wiring harness diagram

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[rsi2]
2-7
8
.
Diagnostics
for
Engine
Starting
Failure

WIRING
DIAGRAM
:

Fuel
pump

M

R58
S
.M
.J
.

R67R46
R1
897

E

B84

ECM

Fuel
pump
relay

0

846

SBF-2

No
.16
~b---

862F45

884

9
10
1112
13141516
R58
R61B46

3132
333435363738
39
40
4142
43
44585960
6162
6364
6566
6768
6910
1
2
3
~1
]
M34
1
84
1
8
51
86
1
871
88
1
89
1
90
1
91
1
92
1
93
1
94
1
95
1
96
1
4
56~J

82M
1014

PUMpK

OPERATING
SOUND
OFFUEL
811
CHEC

R58

OBD0132A

Make
sure
that
fuel
pump
isin
operation
for
two
seconds

when
turning
ignition
switch
to
ON
.

CHECK
:
Does
fuel
pump
produce
operating
sound?

NOTE
:

Fuel
pump
operation
check
can
also
beexecuted
using

Subaru
Select
Monitor
(Function
mode
:
FD01)
.

For
the
procedure,
referto
"COMPULSORY
VALVE
OPER-
ATION
CHECK
MODE"
2-7
[T3F0]*4
.

,res
:
Check
fuel
injector
circuit
.
<
Ref
.
to
2-7

[T10Q0].*2
>

No
:
Go
to
step
812
.
1
812
CHECK
GROUND
CIRCUIT
OF
FUEL
PUMP
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
fuel
pump
.

3)
Measure
resistance
of
harness
connector
between
fuel

pump
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R58)
No
.
4
-
Chassis
ground
:

Is
the
resistance
less
than
5
S2?

5

WIRING
DIAGRAM
[oso2i
6-3

6
.
Wiring
Diagram

GB-3

B3B
i3
i13
Comb
ination
'L~J
meter

B31
SRS
harness

BB
E
E
Frontwiper
[Uf
motor

4-6
GB-4
B9
FWD
sw
I
tch
CI
:~

816
Brakefluid
level
switch

Rear
Rear
finisherfinisher
light
LH
light
RH
049
8
D42
D4G
Lisence
plate
Iight
RH

D45
Lisence
plate
11ght
LH

043
Rearwipe
r
motor

048
Rear
defogge
r

R26
Rear
combination
LM
light
RH

R28
Rear
combination
LM
I(ght
LH

D46
Reargate
klatch
switch

R7
033R67

(B
I
ac
k)R6
i23
(BrowN
(B
I
ec
k)
B9
R25
(B
I
ec
k)
B16
(G
rey)
DB
(Gray)
D44045

21
2
12
1212

FI6
(B
I
ac
k)
B62D63R26
(B
I
ac
k)

039

12

BBB
(Black)

123

Fl7
(B
I
ac
k)
D49D42R2B
(B
I
ac
k)
(K)
(Y
e
11
ow)
(E)(9)
12
34
M1_2T3741
13141516
1
o23
N4
;5677
1
234
1
234
5
M67
8
R56
;7iR8

(B
I
8C
k)
(B
I
ac
K)
(Brown)

P
3141
56
789
1
F273
F1
4
6789
0151
7
89
1
2
34

161
2
314
0
1121314E
69
7181
1
11
1
12
1
314
51617
A
920

12

11112
314(51617
B4
02122
78

I
F1
34

161718
212223py

56

2~14

BUR04-03B

5
.
M
.
J
.
[Referto
foldout
page
.]
-
-
z~

B97
Rl

B92
Door
lock
module

B94
GB-8
Cruise
control
module

888
L=]
Evaporator
thermoswitch

R7

P
position
switch

R6

C
Shift
lock
solenoid

R46R67R58
Fuel
gauge
-e-C~umodule
&
fuel
pump

R25
LEE
Reardefogger
condenser

R23
-riPower
antenna
s1
-
~_5
GB-9

High-mounted
stop
light
D39
-12
m

R37

m4
D33

3

7. Diagnostics for CHECK ENGINE
Malfunction Indicator Lamp (MIL)
A: CHECK ENGINE MALFUNCTION
INDICATOR LAMP (MIL) DOES NOT COME
ON.
DIAGNOSIS:

The CHECK ENGINE malfunction indicator lamp (MIL)
circuit is open or shorted.
TROUBLE SYMPTOM:

When ignition switch is turned ON (engine OFF), MIL
does not come on.
7A1Check output signal from ECM.
7A2Check harness between combination meter
and ECM connector.
7A3Check harness between combination meter
and ignition switch connector.
WIRING DIAGRAM:
B2M0507


79
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)

B: CHECK ENGINE MALFUNCTION
INDICATOR LAMP (MIL) DOES NOT GO OFF.
DIAGNOSIS:

The CHECK ENGINE malfunction indicator lamp (MIL)
circuit is shorted.
TROUBLE SYMPTOM:

Although MIL comes on when engine runs, trouble code
is not shown on Subaru select monitor or OBD-II general
scan tool display.
7B1Check harness between combination meter
and ECM connector.
WIRING DIAGRAM:
B2M0507
B2M0470C
7B1CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Turn ignition switch to ON.
: Does the MIL come on?
: Repair short circuit in harness between combina-
tion meter and ECM connector.
: Replace ECM.
82
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)

C: CHECK ENGINE MALFUNCTION
INDICATOR LAMP (MIL) DOES NOT BLINK AT
A CYCLE OF 3 HZ.
DIAGNOSIS:

The CHECK ENGINE malfunction indicator lamp (MIL)
circuit is open or shorted.

Test mode connector circuit is in open.
TROUBLE SYMPTOM:

When inspection mode, MIL does not blink at a cycle of
3 Hz.
7C1Check operation of CHECK ENGINE
malfunction indicator lamp (MIL).
7C2Check output signal from ECM.

7C3Check harness between ECM and test mode
connector.
7C4Check ground circuit.
WIRING DIAGRAM:
B2M0511


83
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)

D: CHECK ENGINE MALFUNCTION
INDICATOR LAMP (MIL) REMAINS BLINKING
AT A CYCLE OF 3 Hz.
DIAGNOSIS:

Test mode connector circuit is shorted.
TROUBLE SYMPTOM:

Even though test mode connector is disconnected, MIL
blinks at a cycle of 3 Hz when ignition switch is turned to
ON.
7D1Check harness between ECM connector and
engine grounding terminal.
WIRING DIAGRAM:
B2M0511
86
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)

B: STARTER MOTOR CIRCUIT
8B1Check input signal for starter motor.8B2Check ground circuit of starter motor.
8B3Check harness between battery and ignition
switch connector.
8B4

Check inhibitor switch. (AT vehicles only)

Check starter interlock circuit. (MT vehicles
only)
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:

LHD Model
B2M0516


89
2-7ON-BOARD DIAGNOSTICS II SYSTEM
8. Diagnostics for Engine Starting Failure

D: IGNITION CONTROL SYSTEM
8D1Check ignition system for sparks.
8D2Check power supply circuit for ignition coil.
8D3Check ignition coil.
8D4Check harness between ignitor and ignition
coil connector.
8D5Check input signal for ignitor.
8D6Check harness of ignitor ground circuit.
8D7Check harness between ECM and ignitor
connector.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:
B2M0522






99
2-7ON-BOARD DIAGNOSTICS II SYSTEM
8. Diagnostics for Engine Starting Failure