Subaru Legacy 2003 Service Manual page 609

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
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?
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?
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?
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
FU(H4SO)-62, Fuel Pump.>
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?
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?
Step
EN(H4SO)-212
Value
1 Ω
1 Ω
1 Ω
54.5 Ω
41.5 Ω
Yes
Go to step 7. Repair open circuit
between coupling
connector and fuel
level sensor.
Go to step 8. Repair open circuit
between fuel level
sensor and fuel
sub level sensor.
Go to step 9. Repair open circuit
between coupling
connector and fuel
sub level sensor.
Replace fuel level Go to step 10.
sensor. <Ref. to
FU(H4SO)-64,
Fuel Level Sen-
sor.>
Replace fuel sub Replace combina-
level sensor. tion meter. <Ref.
<Ref. to to IDI-14, Combi-
FU(H4SO)-65, nation Meter
Fuel Sub Level Assembly.>
Sensor.>
No