fuel pump SUBARU LEGACY 1996 Service User Guide

WIRING
DIAGRAM
[oso2i
6-3

6
.
Wiring
Diagram

GB-3

838
13
i13
s-r,
Comb
inationmeter

831
O
SRS
Front
wiper
cui
harness
motor

B9

E
E
FWD
switchCIll

GB-6
GB-4
Brake
fluid
B
CE
level
switch
S
.
M
.
J
.
(Refer
to
foldout
page
.]

B97
Rl

892
IM
Door
lock
module

R7

-71P
position
switch

i
Shift
lock
-
solenoid

B94
~
R~5
R57
RSB
Cruise
control
Fuel
gauge
modulemodule
&
fuel
pump

Evaporator

~z
thermoswltch
Rear
defogger
condenser

R23
-
e
Power
antenna
GB-5GB-9

Rear
Rearfinisher
finisher
High-mount
light
LH
light
RHStop
light
D69042D39
-
~-l
R26
car
combination
m
light
RH

R37

m4
0~3

Lisence
plat
044
e
light
RH

D45
Llsence
plate
light
LH

043
Rear
wtperEnj
motor

D4B
Rear
defogge
r

D46
Reargete
latch
switch

tear
combination
light
LH

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

R7
D33

(Black)
R6
i23
(Brown)(Black)
B9
O(Black)
816
(G
rey)
O(Gray)
DL4D65X39
88B
(B18ck)

21
2
12
12
1212
123

Flb
(B
I
ac
k)
B62D63R26
(B
I
8C
k)

F17
(g
I
flc
k)
DG9042R2B
(B
I
ac
k)
i
13
R23
X31
(Ye
II
ow)
(E)

1
2
34
riT2
ri-r2
m34
131415161
o23
R45
67
1
234
1
234
S
M67
8
P567
N8
(B
I
ac
k)
07
894
(B
I
ac
k)i3
(Brown)
830

1
2
34
1
23
4
67
89
1
12
4
78910

1

1
7891
7
23

L
5
16
89
2211171

4
112131
19
0

6
141

6789
67891
1
1
112(3(
111
l
141
1617LB19
t
12114
1
1611
192
p1

BUR04-02B

7

6-3
[Dso131
WIRING
DIAGRAM

6
.
Wiring
Diagram

Combination
meter

Tachometer
i10
:a

-

110
OD
:
b

Malfunction
i14
I:
c
indicator
~}g
lamp

Speedometer
circuit

ill

Main
relay
o
B47
Twisted
wire

0

B46
E
Fuel
pump
relay

13
.
ENGINE
ELECTRICAL
SYSTEM

To
Power
Supply
Routing
FB-20
~
MB-3
~
FB-4
~
ST
FB-22
Check

FUSENa
15
SBF-2
FUSE
Na
l6IGSW
FUSE
W
15
connector
a
v
B79

,~l,,I
F45

u
B62(2
837

i3
B3B

S
.
M
.
J
.
[Referto
foldout
page
.]

R58R57Rt5

Fuel
M
Y

pump

E
Inhibitor
switch

Bl2
B97817

RI

Vehicle
speed
sensor
2

B17
(B
I
ac
k)
i
tl
B46
(Green)
R15
(B
I
ac
k)
R58

12
1
2
123
12
12334
3456
456

(
2D
(Light
gray)
110
i
l2
(L
I
ght
gray)

1
1
1
2
1
3
1
4
1
5
1
6
M78
9
1
10
1
11
1
12
1
D
1
1234567891011113141516

rnrnmvo~
v
.»ov
.0m
.OMPPmM
.Oh
l~

Enginecontro
I
B84
module

B47
(Brown)
(g
)(Gray)

1
2
1
23
4
31
45
67
85
1
69
1
16N1
1
12
1
-

(
ED

B79
(Gray)

1
23
4567
89
1
10
1112
1314

t2(3
(B
rown)

234789
12345
678910
l
'
1
11
1
1
2l3l4151617181920~~
lll2(31415t6L71819202122

BUR10-02A

12

r
Connecting
to

)r
Area
No
.
Name

C-4
D1
Front
doorcord
RH

ow
C-4
ABi
SRS
(Airbag)
harness

;k
C-4
Turn
&
hazard
module

.k
C-3
i1

C-3
i2
instrument
panel
wiring

un
C-3
i3
harness

e
C-3
i4

y
C-3
OBD-IIservice
connector

C-3
Power
window
circuit
breaker

C-3
Power
window
relay

;k
C-3
Illuminationcontrol
module

C-3
Seat
belt
timer

;n
B-4
Fuel
pump
relay

vn
B-4
Main
relay

;k
B-4
Horn
relay

B-4
Blower
relay

y
C-4
FIB
y
C-4
B-3
Shield
joint
connector
(AT)

.k
B-3

:k
B-3
Transmission
control
module

.k
B-3

:k
B-3
Shift-lock
control
module

B-4F44
i
h
B-4F45
Front
w
ring
arness

.k
B-3
Stop
light
switch

,k
B-3
Stop
8
brake
switch
(Withcruise
control)

:k
8-3
Cruise
control
sub
switch

Connector
Connecting
to

No
.
Pole
Color
Area
No
.
Name

869
11
Black
C-3

B70
9
C-3
Combination
switch

B71
8
8-3

B72
6
Black
C-3
Ignition
switch

B73
2
Black
B-3
Key
lock
solenoid

B74
2
Black
B-3
Key
warning
switch

B75
2
Green
B-2
876
T
d
B76
2
Green
8-2
875
e
connector
est
mo

877
7
B-2
Mode
actuator

B78
9
Yellow
B-2
Data
link
connector

B79
14
Gray
C-2
Check
connector

BBO
4
Blue
B-2
i20
Instrument
panel
wiring
harness

B81
1
x
2
B-2
Diagnosis
terminal
(Ground)

B82
6
Black
B-2
Diagnosisconnector

BB3
4
C-1
Shield
joint
connector
(EIG)

BBQ
96Lightblue
C-2
Engine
control
module

B85
4
Brown
B-3
Diode
(Lighting)

B86
4
Black
B-1
Blower
motor
resistor

887
2
Black
B-1
Blower
motor

888
3
Black
B-1
Evaporatorthermoswitch

B90
2
Green
B-4
R50
Room
light
cord

B91
5
B-1
FRESHIRECIRC
actuator

B92
8
B-1
Door
lock
timer

894
20
Black
B-1
Cruise
control
module

B97
56
B-4
R1
Rear
wiring
harness
(S.M
.J
.)

B101
24
B-1
D11
Front
door
cord
LH

8111
3
Gray
C-4FIB

`
:
Non-colored

4
.
BULKHEAD
WIRING
HARNESS
(IN
COMPARTMENT)

1
I
2
I
3
I
4

A

B

C

D

1
I
2
I
3
I
4

[oeo41

B6M0513A

A

B

C

iJ

23

Connector
Connecting
to

No
.
Pole
Color
Area
No
.
Name

830
24
C-4
D1
Front
door
cord
RH

831
7
Yellow
C-4
A81
SRS
(Airbag)
harness

B32
3
Black
C-4
Turn
&
hazard
module

B36
22
Black
C-3
i1

B37
22
C-3
i2
Instrument
panel
wiring

B38
22
Brown
C-3
i3
harness

B39
20Blue
C-3
i4

B40
16
Gray
C-3
OBD-II
service
connector

B41
2
C-3
Power
window
circuit
breaker

842
4
C-3
Power
window
relay

B43
6
Black
C-3
Illumination
control
module

B44
8
C-3
Seat
belt
timer

B46
4
Green
B-4
Fuel
pump
relay

B47
6
Brown
B-4
Main
relay

B49
3
Black
B-4
Horn
relay

850
4
B-4
Blower
relay

851
11
Gray
C-4
FIB
B52
12
Gray
C-4

853
4
B-3
Shield
joint
connector
(AT)

B54
12
Black
B-3

B55
16
Black
B-3
Transmission
control
module

B56
20
Black
B-3

B57
12
Black
B-3
Shift-lock
control
module

861
B
B-4
F44

B62
20
B-4
F45
Front
wiring
harness

B64
2
Black
B-3
Stop
light
switch

B65
4
Black
B-3
Stop
&
brake
switch(Withcruise
control)

B68
5
i
Black
i
B-3
Cruise
control
sub
switch

Connector
Connecting
to

No
.
Pole
Color
Area
No
.
Name

B69
11
Black
C-3

B70
9
C-3
Combination
switch

B71
8
8-3

B72
6
Black
C-3
Ignition
switch

B73
2
Black
B-3
Key
lock
solenoid

B74
2
Black
B-3
Key
warning
switch

B75
2
Green
B-2
B76

B76
2
Green
&2
B75
Test
mode
connector

B77
7
B-2
Made
actuator

B78
9
Yellow
B-2
Data
link
connector

B79
14
Gray
C-2
Check
connector

B80
4
Blue
B-2
i20
Instrumentpanel
wiring
harness

B81
1
x
2
B-2
Diagnosis
terminal
(Ground)

B82
6
Black
B-2
Diagnosis
connector

B83
4
C-1
Shield
joint
connector
(E!G)

884
96
Light
blue
C-2
Engine
control
module

885
4
Brown
B-3
Diode
(Lighting)

B86
4
Black
B-1
Blower
motor
resistor

887
2
Black
B-1
Blower
motor

B88
3
Black
8-t
Evaporator
thermoswitch

890
2
Green
B-4
R50
Room
light
cord

B91
5B-1
FRESHIRECIRC
actuator

892
8
B-1
Door
lock
timer

B94
20
Black
B-1
Cruise
control
module

B97
56
B-4
R1Rear
wiring
harness
(S
.M
.J
.)

B101
24
B-1
D11
Front
doorcord
LH

13111
3
Gray
C-4
FIB

`
:
Non-colored

4
.
BULKHEAD
WIRING
HARNESS
(IN
COMPARTMENT)

A

B

C

1]

4

23

2-7
[reioi
ON-BOARD
DIAGNOSTICS
II
SYSTEM

8
.
Diagnostics
for
Engine
Starting
Failure

8
.
Diagnostics
for
Engine
Starting

Failure

I:
FUEL
PUMP
CIRCUIT
(2200
cc
AWD
EXCEPT
TAIWANMODEL)

811
Check
operating
sound
offuel
pump
.

812
Checkground
circuit
offuel
pump
.

I

__
813
Check
power
supply
to
fuel
pump
.
1

814
Check
harness
between
fuel
pump
and

fuel
pump
relay
connector
.

815
[
Check
fuel
pump
relay
.

816
Check
harness
between
ECM
and
fuel

pump
relay
connector
.

CAUTION
:

After
repair
or
replacement
of
faulty
parts,
conduct

CLEAR
MEMORY
and
INSPECTION
MODES
.

Ref
.
to
2-7
[T3D0]
and
[T3E0]
.*2
and
*4
>

4

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

2-7
trsi31
ON-BOARD
DIAGNOSTICS
II
SYSTEM

8
.
Diagnostics
for
Engine
Starting
Failure

R58
Bog

1
23
2
1
L

11

5
643

D

S2

B2M0526A

,rES
:
Go
to
step
813
.

No
:
Repair
open
circuit
in
fuel
pump
ground
circuit
.

813
I
CHECK
POWER
SUPPLY
TOFUEL
PUMP
.

1)
Turn
ignition
switch
to
ON
.

2)
Measure
voltage
of
power
supply
circuit
between
fuel

pump
connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R58)
No
.
1
(+)
-
Chassis
ground
(
)
:

Is
the
voltage
more
than10
V?

,rES
:
Replace
fuel
pump
.

No
:
Go
to
step
814
.

814
CHECK
HARNESS
BETWEEN
FUEL
PUMP

AND
FUEL
PUMP
RELAY
CONNECTOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Measure
resistance
of
harness
connector
between
fuel

pump
and
fuel
pump
relay
.

CHECK
:
Connector
&
terminal

(R58)
No
.
1
-
(B46)
No
.
4
:

Is
the
resistance
less
than
1
S2?

,rES
:
Go
to
next
CHECK

No
:
Repair
open
circuit
in
harness
between
fuel
pump

and
fuel
pump
relay
connector
.

CHECK
:
Connector
&
terminal

(R58)
No
.
1
-
Chassis
ground
:

Is
the
resistance
more
than
1
MS2?

,res
:
Go
to
step
815
.

No
:
Repair
short
circuit
in
harness
between
fuel
pump

and
fuel
pump
relay
connector
.

6

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[Tsisl
2-7

8
.
Diagnostics
for
Engine
Starting
Failure

815
1
CHECK
FUEL
PUMP
RELAY
.

1)
Disconnectconnectors
from
fuel
pump
relay
and
main

relay
.

2)
Remove
fuel
pump
relay
and
main
relay
with
bracket
.

3)
Connect
battery
to
fuel
pump
relay
connector
terminals

No
.
1
and
No
.
3
.

4)
Measure
resistance
between
connector
terminals
of

fuel
pump
relay
.

CHECK
;
Terminals

No
.
2
-
No
.
4
:

Is
the
resistance
less
than10
92?

YES
:
Go
tostep
816
.

No
:
Replace
fuel
pump
relay
.

816
CHECK
HARNESS
BETWEEN
ECM

FUEL
PUMP
RELAY
CONNECTOR
.

AND

1)
Disconnectconnectors
from
ECM
.

2)
Measure
resistanceof
harness
between
ECM
and
fuel

pump
relay
connector
.

CHECK
:
Connector
&
terminal

(B84)
No
.
32
-
(B46)
No
.
3
:

Is
the
resistance
less
than
1
0?

YES
.
Go
to
next
CHECK

No
:
Repair
harness
between
ECM
and
fuel
pump

relay
connector
.

CHECK
:
Is
there
poor
contact
in
ECM
connector?

vES
:
Repair
poor
contact
in
ECM
connector
.

No
:
Check
fuel
injector
circuit
.
<
Ref
.
to
2-7

[T8F0]
.*2
>

7

2-7
[T10B01]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

10
.
Diagnostics
Chart
with
Trouble
Code

Data
link
connector
-
Subaru
select
monitor
and
BrD-11
general
scan
tool)

Data
link
connector
~(for
Subaru
select
monitor
~onlY)

\~V

82M1016A
I

TNKT
(F44)

20°C
68°F

H2M
1308

TNKT
(F44)

20°C
68°F

H2M1308

CONNECTSUBARU
SELECT
MONITOROR
10801
THE
OBD-II
GENERAL
SCAN
TOOL,
AND

READDATA
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
Subaru
Select
Monitor
or
the
OBD-II
general

scan
tool
to
data
link
connector
.

3)
Turn
ignition
switch
to
ON
and
Subaru
Select
Monitor

or
OBD-II
general
scan
tool
switch
to
ON
.

4)
Start
engine
.

5)
Read
data
onSubaru
Select
Monitor
or
OBD-II
general

scan
tool
.

*
Subaru
Select
Monitor

Designate
mode
using
function
key
.

Function
mode
:
F44

9
F44
:
Fuel
temperature
is
indicated
in
"°C"
and
"°F"

CHECK
:
Is
the
value
greater
than
150°C
or
300°F
in

function
mode
F44?

,rES
:
Go
to
step
10802
.

No
:
Go
to
next
CHECK
CHECK
;
Is
the
value
less
than
-40°C
or
-40°F
in
func-

tion
mode
F44?

,rss
:
Go
to
step
10803
.

No
:
Repair
poor
contact
.

NOTE
:

In
this
case,
repair
the
following
:

"
Poor
contact
in
fuel
pump
connector

"
Poor
contact
in
ECM
connector

"
Poor
contact
in
coupling
connector
(B22,
B97
and
R57

"
OBD-II
general
scan
tool

For
detailed
operation
procedures,
referto
the
OBD-

General
Scan
Tool
Instruction
Manual
.

12

II

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T10B02]
2-7

10
.
Diagnostics
Chart
with
Trouble
Code

Data
link
connector
(for
Subaru
select
monitor
and
OBD-II
general
scan
tool)

I
Data
link
connector
(for
Subaru
select
monitor
only)

B2M1016A

TNKT
(F44)

20°C
68°F

H2M1308

CHECK
HARNESS
BETWEEN
FUELTEM-

10B02
pERATURE
SENSOR
AND
ECM
CONNEC-

TOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Remove
access
hole
lid
.

3)
Disconnect
connector
from
fuel
pump
.

4)
Connect
Subaru
Select
Monitor
or
the
OBD-II
general

scan
tool
to
data
link
connector
.

5)
Turn
ignition
switch
and
Subaru
Select
Monitor
or

OBD-II
general
scan
tool
switch
to
ON
.

6)
Read
data
onSubaru
Select
Monitor
or
the
OBD-II

general
scan
tool
.

9
Subaru
Select
Monitor

Designate
mode
using
function
key
.

Function
mode
:
F44

9
F44
:
Fuel
temperature
is
indicated
in
"°C"
and
"°F"
.

CHECK
:
Is
thevalue
less
than
-40°C
or
-40°F
in
func-

tion
mode
F44?

vES
:
Replace
fuel
temperature
sensor
.

No
:
Repair
short
circuit
in
harness
between
fuel
pump

and
ECM
connector
.

e
OBD-II
general
scan
tool

For
detailed
operation
procedures,
refer
to
the
OBD-

General
Scan
Tool
Instruction
Manual
.

13

I
I