Subaru IMPREZA GD 2007 Series Manual page 1564

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
7 CHECK FUEL TANK CORD.
1) Disconnect the connector from fuel level
sensor.
2) Measure the resistance between the fuel
level sensor and coupling connector.
Connector & terminal
(R15) No. 11 — (R58) No. 2:
8 CHECK FUEL TANK CORD.
1) Disconnect the connector from fuel sub
level sensor.
2) Measure the resistance between the fuel
level sensor and fuel sub level sensor.
Connector & terminal
(R58) No. 3 — (R59) No. 2:
9 CHECK FUEL TANK CORD.
Measure the resistance between the fuel level
sensor and coupling connector.
Connector & terminal
(R57) No. 8 — (R59) No. 1:
10 CHECK FUEL LEVEL SENSOR.
1) Remove the fuel pump assembly. <Ref. to
FU(H4DOTC)-63, Fuel Pump.>
2) While moving the fuel level sensor float up
and down, measure resistance between fuel
level sensor terminals.
Terminals
No. 3 — No. 2:
11 CHECK FUEL SUB LEVEL SENSOR.
1) Remove the fuel sub level sensor. <Ref. to
FU(H4DOTC)-66, Fuel Sub Level Sensor.>
2) While moving the fuel sub level sensor float
up and down, measure resistance between fuel
sub level sensor terminals.
Terminals
No. 1 — No. 2:
Check
Is the resistance less than 1 Ω? Go to step 8.
Is the resistance less than 1 Ω? Go to step 9.
Is the resistance less than 1 Ω? Go to step 10.
Is the resistance 52 Ω or more? Replace the fuel
Is the resistance 44 Ω or more? Replace the fuel
EN(STI)(diag)-233
ENGINE (DIAGNOSTICS)
Yes No
Repair the open
circuit between the
coupling connector
and fuel level sen-
sor.
Repair the open
circuit between the
fuel level sensor
and fuel sub level
sensor.
Repair the open
circuit of harness
between the cou-
pling connector
and fuel level sen-
sor.
Go to step 11.
level sensor. <Ref.
to FU(H4DOTC)-
65, Fuel Level Sen-
sor.>
Replace the com-
sub level sensor. bination meter.
<Ref. to <Ref. to IDI-11,
FU(H4DOTC)-66, Combination
Fuel Sub Level Meter.>
Sensor.>