Subaru Legacy 2002 Service Manual page 716

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK ANY OTHER DTC ON DISPLAY.
2 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, REMOVAL, Fuel Pump.>
2) While moving fuel level sensor float up and
down, make sure that the resistance between
fuel level sensor terminals changes smoothly.
Terminals
No. 3 — No. 6:
3 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, REMOVAL, Fuel Sub Level Sensor.>
2) While moving fuel sub level sensor float up
and down, make sure that the resistance
between fuel level sensor terminals changes
smoothly.
Terminals
No. 1 — No. 2:
Step
Does the Subaru Select
Monitor or OBD-II general
scan tool indicate DTC
P0462 or P0463?
Does the resistance
change smoothly?
Does the resistance
change smoothly?
EN-199
Check Yes
Inspect DTC
P0462 or P0463
using "17. List of
Diagnostic
Trouble Code
(DTC)". <Ref. to
EN-82, List of
Diagnostic
Trouble Code
(DTC).>
Go to step 3.
Repair poor con-
tact in ECM, com-
bination meter
and coupling con-
nectors.
Engine (Diagnostics)
No
Go to step 2.
Replace fuel level
sensor. <Ref. to
FU-72, Fuel Level
Sensor.>
Replace fuel sub
level sensor.
<Ref. to FU-73,
Fuel Sub Level
Sensor.>