SUBARU LEGACY 1996 Service Repair Manual

ON-BOARD
DIAGNOSTICS
11
SYSTEM
[TIoBwB]
2-7
10
.
DiagnosticsChart
with
Trouble
Code

R58

B2M0938A
I

R58

B2M0939A
I

10BW7
CHECK

I
SENSOR
.

ROUND
CIRCUIT
OF
FUEL
LEVEL

Measure
resistance
of
harness
between
fuel
pump
con-

nector
and
chassis
ground
.

CHECK
:
Connector
&
terminal
(R58)
No
.
5
-
Chassis
ground
:

Is
the
resistance
less
than
5
92?

YES
:
Go
to
step
10BW8
.

No
:
Repair
harness
and
connector
.

NOTE
:

In
this
case,
repair
the
following
:

9
Open
circuit
in
harness
between
fuel
pump
connector

and
chassis
grounding
terminal

"
Poor
contact
in
fuel
pump
connector

"
Poor
contact
in
coupling
connectors
(R57,
B97and

B22)

1OBW8
CHECK
HARNESS

(FUEL
PUMP
CONNECTOREN

ECM
AND

1)
Connect
connector
to
fuel
sub
meter
unit
.

2)
Turn
ignition
switch
to
ON
.

3)
Measure
voltage
between
fuel
pump
connector
and

chassis
ground
.

CHECK
:
Connector
&
terminal
(R58)
No
.
3
(+)
-
Chassis
ground
(
)
:

Is
thevoltage
less
than
1
V?

Repair
harness
and
connector
.

NOTE
:

In
this
case,
repair
the
following
:

*
Open
circuit
in
harness
between
fuel
pump
connector

and
junction
A
on
rear
wiring
harness

"
Poor
contact
in
fuel
sub
meter
unit
connector

"
Poor
contact
in
fuel
pump
connector

"
Poor
contact
in
coupling
connector
(R57)

No
:
Go
to
nextstep
4)

51

2-7
[T10BW9]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

10
.
Diagnostics
Chart
with
Trouble
Code

'-
'lam

o
-
-

-`
=1~\
~--
~
~
o

(D
--

.
G2M0340

R58

B2M0940A
I

4)
Turn
ignition
switch
to
OFF
.

5)
Disconnect
connector
from
ECM
.

6)
Turn
ignition
switch
to
ON
.

7)
Measure
voltage
between
ECM
connector
and
chassis

ground
.

CHECK
:
Connector
&
terminal

(B84)
No
.
27
(+)
-
Chassis
ground
:

Is
thevoltage
less
than
1
V?

vES
:
Repair
harness
and
connector
.

NOTE
:

In
this
case,
repair
the
following
:

9
Open
circuit
in
harness
between
ECM
connector
and

junction
A
on
rear
wiring
harness

9
Poor
contact
in
coupling
connector
(B97)

No
:
Repair
connector
.

NOTE
:

In
this
case,
repairthe
following
:

"
Poor
contact
in
fuel
pump
connector

"
Poor
contact
in
fuel
sub
meter
unit

"
Poor
contact
in
ECM
connector

CHECK
HARNESSBETWEEN
ECM,
COMBI-

10BW9
NATION
METER
AND
FUEL
PUMP
CONNEC-

TOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Remove
fuel
pump
access
hole
lid
located
on
the
right

rear
of
luggage
compartment
floor
.

3)
Disconnect
connector
from
fuel
pump
.

4)
Measure
resistance
of
harness
between
fuel
pump

connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal
(R58)
No
.
3
-
Chassis
ground
:

Is
the
resistance
less
than10
S2?

vES
:
Go
to
nextstep
5)
.

No
:
Go
to
step
10BW10
.

5)
Remove
service
hole
cover
located
on
the
left
rear
of

luggage
compartment
floor
.

52

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[TIoBw9]
2-7

10
.
DiagnosticsChart
with
Trouble
Code

R58

B2M0940A
I

R59

82M0941A
I

R15

B2M0942A
I

6)
Disconnect
connector
from
fuel
sub
meter
unit
.

7)
Measure
resistance
of
harness
between
fuel
pump

connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R58)
No
.
3
-
Chassis
ground
:

Is
the
resistance
less
than
10
92?

YES
:
Repair
short
circuit
in
harness
between
fuel
pump

and
fuel
sub
meter
unit
connector
.

No
:
Go
to
nextstep
8)
.

8)
Separate
fuel
tank
cord
connector
(R57)
and
rear
wir-

ing
harness
connector
(R15)
.

9)
Measure
resistance
of
harness
between
fuel
sub
meter

unit
connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R59)
No
.
1
-
Chassis
ground
:

Is
the
resistance
less
than10
S2?

,rES
:
Repair
short
circuit
in
fuel
tankcord
.

No
:
Go
to
nextstep
10)
.

10)
Separate
rear
wiring
harness
connector
(R1)
and

bulkhead
wiring
harness
connector
(B97)
.

11)
Measure
resistance
of
harness
between
rear
wiring

harnessconnector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R15)
No
.
3
-
Chassis
ground
:

Is
the
resistance
less
than10
0?

,rES
:
Repair
short
circuit
in
rear
wiring
harness
.

No
:
Go
to
nextstep
12)
.

12)
Measure
resistance
of
harness
between
bulkhead
wir-

ing
connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(B97)
No
.
J2
-
Chassis
ground
:

Is
the
resistance
less
than10
S2?

,rES
:
Go
to
nextstep
13)
.

No
:
Repair
short
circuit

and
ECM
connector
.

in
harness
between
S
.M
.J
.

13)
Separate
bulkhead
wiring
harness
connector
(B38)

and
instrument
panel
wiring
harness
connector
(i3)
.

14)
Measure
resistance
of
harness
between
bulkhead
wir-

ing
harness
connector
and
chassis
ground
.

CHECK
;
Connector
&
terminal

(B97)
No
.
J2
-
Chassis
ground
:

Is
the
resistance
less
than10
SZ?

vES
:
Repair
short
circuit
in
bulkhead
wiring
harness
.

No
:
Repair
short
circuit
in
instrument
panel
wiring

harness
.

53

2-7
frioBwio]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

10
.
Diagnostics
Chart
with
Trouble
Code

10BW10
I
CHECK
HARNESSBETWEEN
COMBINATION

METER
AND
FUEL
PUMP
CONNECTOR
.

1)
Connect
connector
tofuel
pump
.

2)
Pull
out
combination
meterfrom
instrument
panel
.

<
Ref
.
to
6-2
[W13A1
]
.*1
>

3)
Disconnect
connector
from
combination
meter
.

4)
Measure
resistanceof
harness
between
combination

meter
connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(i10)
No
.
3
-
Chassis
ground
:

Is
the
resistance
less
than
200
SZ?

Go
to
step
10BW11
.

No
:
Repair
harness
and
connector
.

NOTE
:

In
this
case,
repair
the
following
:

Open
circuit
in
harness
between
combination
meter

connector
and
junction
A
on
rearwiring
harness

*
Poor
contact
in
coupling
connectors
(i3
and
1397)

10BW11
I
CHECK
COMBINATION
METER
.

1)
Disconnect
speedometer
cablefrom
combination

meter
and
remove
combination
meter
.

CHECK
:
Is
the
fuel
meter
installation
screw
tightened

securely?

,rES
:
Go
to
nextstep
2)
.

No
:
Tighten
fuel
meter
installation
screw
securely
.

2)
Remove
printed
circuit
plate
assemblyfrom
combina-

tion
meter
assembly
.

CHECK
:
Is
there
flaw
or
burning
on
printed
circuit

plate
assembly?

YES
:
Replace
printed
circuit
plate
assembly
.

No
:
Replace
fuel
meter
assembly
.

54

2-7
RyoBxo]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

10
.
DiagnosticsChart
with
Trouble
Code

OBD
(
F
B
1)

EXERR22

B2M0947

BX
:
DTC
P0461

-
FUEL
LEVEL
SENSOR
CIRCUIT
RANGE/

PERFORMANCEPROBLEM
(EXERR22)
-

DTC
DETECTING
CONDITION
:

Two
consecutive
trips
with
fault

10BX1
Check
DTC
P1402
on
display
.

CAUTION
:

After
repair
or
replacement
of
faultyparts,
conduct

CLEAR
MEMORY
and
INSPECTION
MODES
.

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

WIRING
DIAGRAM
:

a
:
(a)

b
:
i11
meter
Ignitionc
:
i14
B72
switch
No
.15
~
SBF-4
F
L
1
.25B
rill-fY~
f1
M
~^1-
~
.c
JL

S
.M
.J
.

O
O
897
R1

EW

8T2

1234

4U

i10i12

4
9
10
1
121
141
1

_
.
u

Fuel
pump
ASSY

R58
Fuellevel
r,r,
sensor
Fuel
sub
meter
unit

R59
Fuel.sub

R5787TR59

4W~!JJ
141~1b1

O
R5B

1
1
141~Ib1

82M1021

56

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[Tyosx11
2-7

10
.
DiagnosticsChart
with
Trouble
Code

1
10BX1
I
CHECK
DTC
P1402
ON
DISPLAY
.

Does
the
Subaru
select
monitor
or
OBD-11

general
scan
tool
indicate
DTC
P1402?

,rES
:
Inspect
DTC
P1402
using"10
.
Diagnostics
Chart

with
Trouble
Code
2-7
[T10A0]"*7
.

NOTE
:

In
this
case,
it
is
not
necessary
to
inspect
this
trouble
.

No
:
Replace
fuel
sending
unit
and
fuel
sub
meter
unit
.

57

6-3
IDso21
WIRING
DIAGRAM

6
.
Wiring
Diagram

6
.
Wiring
Diagram

2
.
GROUND
DISTRIBUTION

i26
Radio
Front
turn
signal
F3

and
sidemarker
z
light
RH

Cigarette
lighter
8~7
Mode
Flb
~
actuator

Subfan
motor
i
GR

f17

Main
fan
motor
11

Front
turn
signs
F~
and
sidemarker
light
LH

Turn
&
hazard
B32

module

Power
wind
relay

AT
shift
lock
control
module

B64
Seat
belt
timer[5
:ji

D66
Bleck>

2

(Brown)
i19
i1B

(B
I
e
C
K)
843

1
2
3456

B57
(g
I
ac
k)

123456
71319461111121

13

'D
2
box
iiio1vuemination
light
=
0
1
agnos
1
a
---B=
term
!
na
I

CD
E
T
B
Fan
switch

GB-7
L
+~
~
3
(9)Illumination
control
module

i
17
s
Mode
control
a
panel
-
om
FGS
L
O
oc
~
B71
3
e
Comb
i
nat
i
on

i18
C~'
sw
i
tch

Rear
defoggro0
switch

870
e
Combination
a
Cruise
control`-'switch
main
switch

b
:
i12
Combination
meter
emote
control
~
830
Combination
rearview
mirror
,
,switch
"J
switch

m
B39
B47
Mainrela
y

(B
r
own>

(B
r
own)
(~D(B
I
ack)

F1721
123
F1
f2T3-1
F1
r2
M
G31
M-
4
MS6
141516

(~~
(Brown)
(D

j

24
3
q
S6
1
23
F45T6
7
1
234
S678
PM
1
2
30
78

CD
(~D(Light
gray)
ill
Bleck>
F45
i4
(Blue)

123
456
12345678
234
6789
1
~~
7891011121314
12345678910111213141516
910111213141516
11
(21314151617181920

BUR04-03A

2

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

6-3
[Dso2]
WIRING
DIAGRAM

6
.
Wiring
Diagram

a
:
B54

b
:
BSS

c
:
B56

Transmission
:control
module

853

Shield
joint
connector
Lz7-

E3
822

E2821

-(California
model)

GEB3

Mass
aIr
flow
sensor
C
:
i14
il
B36

Comb
i
net
i
on
~?+
BRBR
meter

B76
Test
mode
connector

8l2

Inhibitorswitch

(
&
CD
Transmission
4

Vehicle
l
speed
-
sensor
1

B84

19

Engine
control
module

(
ED
~i
gnitor

B79
~
Chec
k
connector

(
9
)
.
eta
link
connector
S
.
M
.
J
.
[Refer
to
foldout
page
.]

OBD-II
B40
B97
R1
R(5R57
~8

Service
R
,EjeRO
FueI
pump
&
connector
1
-fuel
gauge
module

B76
(GreeN
853B3(G
ray)
Bl3
(Gray)
R58
R57878
(Ye
II
ow)
854
B
lack)

nT
456
4567856789
789012
1234
12345
123456

812
(Gray)
Bll
(Gray)

82l
(L
I
ght
i
14879
(Gray)
822
CL
1
ght
855
(B
I
ac
k)840
(Gray)
gray)
gray)

1234
1234
5678
12345678
7
8
1
9
1
10
1
11
1
124
12345678910111213
8
9
0
l
2
3l4
3l41S16
9
OL31123~ISlb
91001213141516

856
(B
I
ac
k)
i1
B
I
ac
k>
BB4
(L
(
ght
b
I
ue)

12
34
U
56
U
78
UU
9t0
U
1112
U
13141J1
516
1718
1
19
1
20
1
21
1
2223242S
I
26
27282930
3132
1
33
1
34
1
35
1
36
3738
39
40
4142
4344

11
1121314
5
6
78
9
l
01
2
3
456
7
8
9
l0
45
1
46
1
47
1
48
1
49
50
5152
1
53
1
54
1
55
1
56
1
57
1
58
5960
6162
636465
66
6768
64
70

11l2
t
3
(4151617
l8l9
20
l1
1
12
1
l3
1
14
1
15
1
16
1
1
7l8l9
20
2122
7172
7374
75767778
74
B0
8182
3
84
B58687888990
9192
9394
95
96

BUR04-03C

4

6-3
IDso1a1
WIRING
DIAGRAM

6
.
Wiring
Diagram

R57R15

Combination
meter
To
Power
Supply
Routing

FB-20
MB-3FB-4
ST
FB-22Check
Tachometer
connector
FUSE
Na
15
S8F-2
FUSE
Na
16
[G
519
FUSE
Na
l5
P
v

1-0
B79
CD
:
bm
rI
a
m

~
~
F45
Malfunction
Q
D
:
C

indicator
,
.
862
lamp
7

Speedometer
B
i
circuit

I11

*c~
)
Main
relay
E

o
B47
=
Twisted
wire

=2
R
0
F-0
0-
<
71

846
E

Fuel
pump
relay
"
>-
3z
M
~`
LL
J
C
A
V
mJ
(7

Fue
I
pump
&
~
MM~mVPPP
-+
fuel
gauge
module
~
Jv
Fue
I
S
.
M
.
J
.
mJ
B97
3
Engine
pump
[Refer'
to
a
1,
B17
control
B84
module
foldout
page
.],
JJ
Rl
~/
m
L
C

O

R

Fuel
ix
J
temperature
R67R46
sensor
u
Vehicle
=
speed
'
rr
sensor
D
Fuel
gauge
~
r
Inhibitor
switch
n

R59

Fue
I
gauge
C~
sub
module

R59
R67R68

B17

(B
lack)

12
2
12
C

i14

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((
9
)
5
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F1F1
Pressure
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controlcontrol
solenoid
solenoi
valvevalve

R69
OD
846
R47
(Green)

U
:Z~)
123
~
34

13
.
ENGINE
ELECTRICAL
SYSTEM

R47

F-1
Fuel
tank
d
pressure
sensor

(Brown)

M
F1F2-1

'
2
3
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456
1516

(L
I
ght
gray)
i
10
(
2D
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gray)

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B12
R57B12

(Gray)

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F45
B79

(Gray)

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IO
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12
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(Brown)

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1
13
1
14
1
15
1
16
1
17
1
18
1
19
1
20
21
1
99
1

BUR10-03A

6