Subaru Legacy 2002 Service Manual page 709

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (Diagnostics)
No.
7 CHECK FUEL TANK CORD.
1) Turn ignition switch to OFF.
2) Disconnect connector from fuel sub level
sensor.
3) Measure resistance between fuel sub level
sensor and chassis ground.
Connector & terminal
(R59) No. 1 — Chassis ground:
8 CHECK FUEL TANK CORD.
1) Disconnect connector from fuel pump
assembly.
2) Measure resistance between fuel pump
assembly and chassis ground.
Connector & terminal
(R59) No. 2 — Chassis ground:
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-69, Fuel Pump.>
2) Measure resistance between fuel level sen-
sor and terminals with its float set to the full
position.
Terminals
No. 3 — No. 6:
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-73, Fuel Sub Level Sensor.>
2) Measure resistance between fuel sub level
sensor and terminals with its float set to the
full position.
Terminals
No. 1 — No. 2:
Step
Is the resistance more than
1 MΩ?
Is the resistance more than
1 MΩ?
Is the resistance between
0.5 and 2.5 Ω?
Is the resistance between
0.5 and 2.5 Ω?
EN-192
Check Yes
Go to step 8.
Go to step 9.
Go to step 10.
Repair poor con-
tact in harness
between ECM
and combination
meter connector.
No
Repair ground
short circuit in fuel
tank cord.
Repair ground
short circuit in fuel
tank cord.
Replace fuel level
sensor.
Replace fuel sub
level sensor.