Subaru 2009 IMPREZA Service Manual page 639

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
8 CHECK CANISTER.
9 CHECK FUEL TANK.
Remove the fuel tank. <Ref. to FU(H4SO)-54,
Fuel Tank.>
10 CHECK ANY OTHER MECHANICAL TROU-
BLE IN EVAPORATIVE EMISSION CON-
TROL SYSTEM.
Check
Is the canister damaged?
Is the fuel tank damaged?
Are there holes, cracks, clog-
ging, or disconnections, mis-
connection of hoses or pipes in
evaporative emission control
system?
EN(H4SO)(diag)-222
Yes No
Repair or replace Go to step 9.
the canister. <Ref.
to EC(H4SO)-5,
Canister.>
Repair or replace Go to step 10.
the fuel tank. <Ref.
to FU(H4SO)-54,
Fuel Tank.>
Repair or replace Repair the poor
the hoses or pipes. contact of ECM
connector.