Page 257 of 2890
ON-BOARD
DIAGNOSTICS
II
SYSTEM
[TloBw2i
2-7
10
.
Diagnostics
Chart
with
Trouble
Code
WIRING
DIAGRAM
:
a
:
QD
Combination
b
:
i12
meter
Ignition
c
:
i14
No
.
15W2
switch
SBF-4
FL1
.25B
Fuel
gauge
S
.M
.J
.
O
O
E
E)
El)
Fuel
pumpASSY
R58
Fuel
level
sensor
Junction
A
R15R57
ECM
~
Fuel
sub
meter
unit
Fuel
sub
O
~p
level
sensor
E
822
R57
872
R59
1
5
1
6
1
7
1
8
'
,
O
,'
IyWJJ
LJJJ
LJJ
u
4u
1Ju
i10
i~2
117118119~2
.0121122123V4
.
.
.
.
.
.
(D
1
1
1
141
141EIb1
B2M1021
CHECK
SPEEDOMETER
AND
TACHOMETER
(OPERATION
IN
COMBINATION
METER
.
CHECK
:
Does
speedometer
and
tachometer
operate
normally?
vES
:
Go
to
step
10BW3
.
No
:
Go
to
step
10BW2
.
10BW2
I
CHECK
GROUND
CIRCUIT
OFCOMBINA-
TION
METER
.
1)
Turn
ignition
switch
to
OFF
.
2)
Pull
out
combination
meter
from
instrument
panel
.
<
Ref
.
to
6-2
[W13A1
]
.*1
>
3)
Disconnect
connector
from
combination
meter
.
47
Page 258 of 2890
![SUBARU LEGACY 1996 Service Repair Manual 2-7
[-riosw3]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
10
.
Diagnostics
Chart
with
Trouble
Code
i12
1
1
2
1
3
1
4
1
5
1
6
1
789
011
213
4
516
D
[
.0
S2
0i
B2M0934A
I
u
8
7
u
65u
43u21
22
7
52
~
2121
~1
1
SUBARU LEGACY 1996 Service Repair Manual 2-7
[-riosw3]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
10
.
Diagnostics
Chart
with
Trouble
Code
i12
1
1
2
1
3
1
4
1
5
1
6
1
789
011
213
4
516
D
[
.0
S2
0i
B2M0934A
I
u
8
7
u
65u
43u21
22
7
52
~
2121
~1
1](/manual-img/17/57433/w960_57433-257.png)
2-7
[-riosw3]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
10
.
Diagnostics
Chart
with
Trouble
Code
i12
1
1
2
1
3
1
4
1
5
1
6
1
789
011
213
4
516
D
[
.0
S2
0i
B2M0934A
I
u
8
7
u
65u
43u21
22
7
52
~
2121
~1
1
91
1
4
1
4
55
:1
B84
15
q
4
4
48
"§~
5
881
i
81771
70
7
51
74
17317217
1
1
D
+v-
H2M1414B
4)
Measure
resistance
of
harness
between
combination
meter
connector
and
chassis
ground
.
CHECK
:
Connector
&
terminal
(i12)
No
.
1
-
Chassis
ground
:
Is
resistance
less
than5
0?
,rEg
:
Repair
or
replace
combinationmeter
.
No
:
Repair
harness
and
connector
.
NOTE
:
In
this
case,
repair
the
following
:
Open
circuit
in
harness
between
combination
meter
connector
and
grounding
terminal
"
Poor
contact
in
combination
meter
connector
"
Poor
contact
in
grounding
terminal
CHECK
INPUT
SIGNAL
FOR
ECM
.
(USING
10BW3
VOLTAGE
METER
AND
SUBARU
SELECT
MONITOR
.)
1
Turn
ignition
switch
t
o
ON
.
(Engine
OFF)
2)
Measure
voltage
between
ECM
connector
and
chassis
ground
.
CHECK
:
Connector
&
terminal
(884)
No
.
27
(+)
-
Chassis
ground
(
)
:
is
thevoltage
more
than4
.75
V?
,rES
:
Go
to
step
10BW4
.
No
:
Go
to
next
step
3)
.
3)
Measure
voltage
between
ECM
connector
and
chassis
ground
.
CHECK
:
Connector
&
terminal
(884)
No
.
27
(+)
-
Chassis
ground
(
)
:
Is
thevoltage
less
than0
.12
V?
,res
:
Go
to
step
lOBW9
.
No
:
Go
to
next
CHECK
48
Page 259 of 2890
![SUBARU LEGACY 1996 Service Repair Manual
ON-BOARD
DIAGNOSTICS
II
SYSTEM
[r1oBwa]
2-7
10
.
Diagnostics
Chart
with
Trouble
Code
FLEVEL
(F45)
2
.50V
H2M1327
3
2
1
5
4
D
S2
B2M0935
I
CHECK
:
Does
the
value
change
less
than
0
.12
Vby
s SUBARU LEGACY 1996 Service Repair Manual
ON-BOARD
DIAGNOSTICS
II
SYSTEM
[r1oBwa]
2-7
10
.
Diagnostics
Chart
with
Trouble
Code
FLEVEL
(F45)
2
.50V
H2M1327
3
2
1
5
4
D
S2
B2M0935
I
CHECK
:
Does
the
value
change
less
than
0
.12
Vby
s](/manual-img/17/57433/w960_57433-258.png)
ON-BOARD
DIAGNOSTICS
II
SYSTEM
[r1oBwa]
2-7
10
.
Diagnostics
Chart
with
Trouble
Code
FLEVEL
(F45)
2
.50V
H2M1327
3
2
1
5
4
D
S2
B2M0935
I
CHECK
:
Does
the
value
change
less
than
0
.12
Vby
shaking
harness
and
connector
of
ECM
while
monitoring
the
value
with
Subaru
Select
Monitor?
9
Subaru
Select
Monitor
Designate
mode
using
function
key
.
Function
mode
:
F45
9
F45
:
Fuel
level
sensor
output
signal
is
indicated
.
,rES
:
Repair
poor
contact
in
ECM
connector
.
No
:
Even
if
MIL
lights
up,
the
circuit
has
returned
to
a
normal
condition
at
this
time
.
A
temporary
poor
contact
of
the
connector
may
be
the
cause
.
NOTE
:
In
this
case,
repair
the
following
:
"
Poor
contact
in
fuel
pump
connector
"
Poor
contact
in
combination
meter
connector
"
Poor
contact
in
ECM
connector
"
Poor
contact
in
coupling
connector
(i3,
1322,
B97and
R57)
10BW4
CHECK
FUEL
LEVEL
SENSOR
.
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
between
connector
terminals
of
fuel
pump
.
CHECK
:
Terminals
No
.
3
-
No
.
5
:
Is
the
resistance
less
than
100
S2?
vES
:
Go
to
step
10BW5
.
No
:
Replace
fuel
sending
unit
.
49
Page 260 of 2890
2-7
[T10BW5]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
10
.
Diagnostics
Chart
with
Trouble
Code
[2-
1
B2MO9361
R
1
2
34
5
.0
Q
0
.
B2MO937A
I
10BW5
CHECK
FUEL
SUB
LEVEL
SENSOR
.
1)
Remove
service
hole
cover
located
on
the
left
rear
of
luggage
compartment
floor
.
2)
Disconnect
connector
from
fuel
sub
meter
unit
.
3)
Measure
resistance
between
connector
terminals
of
fuel
sub
meter
unit
.
CHECK
;
Terminals
No
.
1
-
No
.
2
:
Is
the
resistance
less
than
100
SZ?
,rES
:
Go
to
step
10BW6
.
No
:
Replace
fuel
sub
meter
unit
.
10BW6
CHECK
HARNESS
FUEL
PUMP
I
I
AND
FUEL
SUB
MET
RWUNIT
CONNECTOR
.
Measure
resistance
of
harness
between
fuel
pump
and
fuel
sub
meter
unit
connector
.
CHECK
:
Connector
&
terminal
(R58)
No
.
3
-
(R59)
No
.
2
:
Is
the
resistance
less
than
1
SZ?
0
:
Go
to
step
10BW7
.
No
:
Repair
open
circuit
in
harness
between
fuel
pump
and
fuel
sub
meter
unit
connector
.
50
Page 261 of 2890
![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
harn 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
harn](/manual-img/17/57433/w960_57433-260.png)
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
Page 262 of 2890
![SUBARU LEGACY 1996 Service Repair Manual 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)
Discon SUBARU LEGACY 1996 Service Repair Manual 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)
Discon](/manual-img/17/57433/w960_57433-261.png)
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
Page 263 of 2890
![SUBARU LEGACY 1996 Service Repair Manual
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 SUBARU LEGACY 1996 Service Repair Manual
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](/manual-img/17/57433/w960_57433-262.png)
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
Page 264 of 2890
![SUBARU LEGACY 1996 Service Repair Manual 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
.
SUBARU LEGACY 1996 Service Repair Manual 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
.](/manual-img/17/57433/w960_57433-263.png)
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