Subaru Legacy III (2000-2003 year). Service manual — part 150
EN(H4SO)-212
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
6
CHECK FUEL TANK CORD.
1) Disconnect connector from fuel level sen-
sor.
2) Measure resistance between fuel level sen-
sor and coupling connector.
Connector & terminal
(R57) No. 6 — (R58) No. 3:
Is the measured value less than the speci-
fied value?
1
Ω
Repair open circuit
between coupling
connector and fuel
level sensor.
7
CHECK FUEL TANK CORD.
1) Disconnect connector from fuel sub level
sensor.
2) Measure resistance between fuel level sen-
sor and fuel sub level sensor.
Connector & terminal
(R58) No. 2 — (R59) No. 2:
Is the measured value less than the speci-
fied value?
1
Ω
Repair open circuit
between fuel level
sensor and fuel
sub level sensor.
8
CHECK FUEL TANK CORD.
Measure resistance between fuel sub level
sensor and coupling connector.
Connector & terminal
(R57) No. 2 — (R59) No. 1:
Is the measured value less than the specified
value?
1
Ω
Repair open circuit
between coupling
connector and fuel
sub level sensor.
9
CHECK FUEL LEVEL SENSOR.
Warning:
During work procedures, if fuel tank is more
than 3/4 full, be careful because fuel may
spill.
1) Remove fuel pump assembly. <Ref. to
2) While moving fuel level sensor float up and
down, measure resistance between fuel
level sensor terminals.
Terminals
No. 3 — No. 6:
Does the measured value exceed the spec-
ified value?
54.5
Ω
Replace fuel level
sensor. <Ref. to
FU(H4SO)-64,
Fuel Level Sen-
sor.>
10
CHECK FUEL SUB LEVEL SENSOR.
Warning:
During work procedures, if fuel tank is more
than 3/4 full, be careful because fuel may
spill.
1) Remove fuel sub level sensor. <Ref. to
FU(H4SO)-65, Fuel Sub Level Sensor.>
2) While moving fuel sub level sensor float up
and down, measure resistance between
fuel sub level sensor terminals.
Terminals
No. 1 — No. 2:
Does the measured value exceed the spec-
ified value?
41.5
Ω
Replace fuel sub
level sensor.
<Ref. to
FU(H4SO)-65,
Fuel Sub Level
Sensor.>
Replace combina-
tion meter. <Ref.
to IDI-14, Combi-
nation Meter
Assembly.>
Step
Value
Yes
No
EN(H4SO)-213
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
MEMO:
EN(H4SO)-214
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AT:DTC P0464 — FUEL LEVEL SENSOR CIRCUIT INTERMITTENT—
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode<Ref. to EN(H4SO)-47, OPER-
ATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)-40, OPERATION, Inspection
Mode.> .
• WIRING DIAGRAM:
EN-01132
NO. 5
27
B22
R3
R15
R57
R58
R59
B99
E3
B157
B72
i53
R98
R59
i10
B22
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
1 2
SBF-1
SBF-4
IGNITION
SWITCH
COMBINATION
METER
FUEL GAUGE
FUEL PUMP ASSY
FUEL SUB
METER UNIT
FUEL LEVEL
SENSOR
FUEL SUB
LEVEL SENSOR
C3
A8
A20
i10
A :
i28
i11
B :
i12
C :
B16
A3
3
6
2
1
16
6
2
B72
4
1 2 3
6
5
1
3 4 5 6
2
R57
i12
1 2 3
4 5 6
7 8 9 10 11 12 13 14
i11
1 2 3 4
5 6 7
8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
B99
1 2 3 4
5 6
10 11 12 13 14 15
7
16
23
30
19 20 21
22
26 27 28 29
8
17
24
31
9
18
25
32
B157
10
11 12 13
14 15 16
17
18
19
20
21 22 23
24 25 26
27
28
29
30
31 32 33
34 35 36
37
38
1
2
9
3
4
5
6
7
8
BATTERY
IGNITION RELAY
B135 ECM
R58
1 2
3 4
5 6
LHD MODEL : 12
RHD MODEL : 14
1
*
2
*
3
*
4
*
LHD MODEL : 29
RHD MODEL : 6
LHD MODEL : 30
RHD MODEL : 17
LHD MODEL : 9
RHD MODEL : 38
LHD MODEL : 13
RHD MODEL : 36
5
*
6
*
7
*
LHD MODEL : 11
RHD MODEL : 34
LHD MODEL : 10
RHD MODEL : 37
1
*
2
*
3
*
4
*
5
*
6
*
7
*
5
4
6 7
8
2
1
9
3
10
22
23
11 12 13 14 15
24 25
26 27
16 17 18
28 29
19 20
21
30
B136
R98
:LHD
:RHD
1 2 3
4 5 6
7 8 9 10 11 12 13 14
R98
1 2 3
4 5 6 7
8 9 10 11 12 13 14 15 16
EN(H4SO)-215
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
Value
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Is any other DTC displayed?
DTC indicated.
Inspect the rele-
vant DTC using
“List of Diagnostic
Trouble Code
(DTC)”. <Ref. to
EN(H4SO)-83, List
of Diagnostic
Trouble Code
(DTC).>
2
CHECK FUEL LEVEL SENSOR.
Warning:
During work procedures, if fuel tank is more
than 3/4 full, be careful because fuel may
spill.
1) Remove fuel pump assembly. <Ref. to
2) While moving fuel level sensor float up and
down, make sure that the resistance
between fuel level sensor terminals
changes smoothly.
Terminals
No. 3 — No. 6:
Does the resistance change smoothly?
Change smoothly.
Replace fuel level
sensor. <Ref. to
FU(H4SO)-64,
Fuel Level Sen-
sor.>
3
CHECK FUEL SUB LEVEL SENSOR.
Warning:
During work procedures, if fuel tank is more
than 3/4 full, be careful because fuel may
spill.
1) Remove fuel sub level sensor. <Ref. to
FU(H4SO)-65, Fuel Sub Level Sensor.>
2) While moving fuel sub level sensor float up
and down, make sure that the resistance
between fuel level sensor terminals
changes smoothly.
Terminals
No. 1 — No. 2:
Does the resistance change smoothly?
Change smoothly.
Repair poor con-
tact in ECM, com-
bination meter and
coupling connec-
tors.
Replace fuel sub
level sensor.
<Ref. to
FU(H4SO)-65,
Fuel Sub Level
Sensor.>
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