Subaru Impreza 2003 Service Manual page 1372

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
7 CHECK FUEL TANK CORD.
1)Disconnect the connector from fuel sub level
sensor.
2)Measure the resistance between fuel level
sensor and fuel sub level sensor.
Connector & terminal
(R58) No. 3 — (R59) No. 2:
8 CHECK FUEL TANK CORD.
Measure the resistance between fuel sub level
sensor and coupling connector.
Connector & terminal
(R57) No. 2 — (R59) No. 1:
9 CHECK FUEL LEVEL SENSOR.
1)Remove the fuel pump assembly. <Ref. to
FU(H4DOTC)-61, Fuel Pump.>
2)While moving the fuel level sensor float up
and down, measure the resistance between
fuel level sensor terminals.
Terminals
No. 3 — No. 5:
10 CHECK FUEL SUB LEVEL SENSOR.
1)Remove the fuel sub level sensor. <Ref. to
FU(H4DOTC)-64, Fuel Sub Level Sensor.>
2)While moving the fuel sub level sensor float
up and down, measure the resistance between
fuel sub level sensor terminals.
Terminals
No. 1 — No. 2:
Check
Is the resistance less than 10
Ω
Is the resistance less than 10
Ω?
Is the resistance more than 53
Ω?
Is the resistance more than 45
Ω?
EN(H4DOTC)-196
Yes
Go to step 8. Repair the open
circuit between
fuel level sensor
and fuel sub level
sensor.
Go to step 9. Repair the open
circuit between
coupling connector
and fuel sub level
sensor.
Replace the fuel Go to step 10.
level sensor. <Ref.
to FU(H4DOTC)-
63, Fuel Level
Sensor.>
Replace the fuel Replace the com-
sub level sensor. bination meter.
<Ref. to <Ref. to IDI-14,
FU(H4DOTC)-64, Combination
Fuel Sub Level Meter Assembly.>
Sensor.>
No