Subaru IMPREZA GD 2007 Series Manual page 324

asieps_tobira_IM_US.book 215 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
6 CHECK FUEL TANK CORD.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the fuel sub
level sensor.
3) Measure the resistance between the fuel
sub level sensor and chassis ground.
Connector & terminal
(R59) No. 1 — Chassis ground:
7 CHECK FUEL TANK CORD.
1) Disconnect the connector from fuel pump
assembly.
2) Measure the resistance between fuel pump
assembly and chassis ground.
Connector & terminal
(R58) No. 3 — Chassis ground:
8 CHECK FUEL LEVEL SENSOR.
1) Remove the fuel pump assembly. <Ref. to
FU(H4SO)-51, Fuel Pump.>
2) Measure the resistance between fuel level
sensor terminals with float set at full position.
Terminals
No. 3 — No. 2:
9 CHECK FUEL SUB LEVEL SENSOR.
1) Remove the fuel sub level sensor. <Ref. to
FU(H4SO)-54, Fuel Sub Level Sensor.>
2) Measure the resistance between fuel sub
level sensor terminals with float set at full posi-
tion.
Terminals
No. 1 — No. 2:
Check
Is the resistance 1 MΩ or
more?
Is the resistance 1 MΩ or
more?
Is the resistance between 0.5
— 2.5 Ω?
Is the resistance between 0.5
— 2.5 Ω?
EN(H4SO)(diag)-215
ENGINE (DIAGNOSTICS)
Yes No
Go to step 7. Repair short cir-
cuit of the harness
to ground of the
fuel tank cord.
Go to step 8.
Repair short cir-
cuit of the harness
to ground of the
fuel tank cord.
Go to step 9.
Replace the fuel
level sensor. <Ref.
to FU(H4SO)-53,
Fuel Level Sen-
sor.>
Repair the poor Replace the fuel
contact of harness sub level sensor.
between ECM and <Ref. to
combination meter FU(H4SO)-54,
connector. Fuel Sub Level
Sensor.>