Subaru 2002 IMPREZA Service Manual page 478

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
BK:DTC PO509
-
IDLE CONTROL SYSTEM CIRCUIT HIGH INPUT
-
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Erroneous idling
Engine stalls.
Engine breathing
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(D0HC TURBO)-
49, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(D0HC TURBO)-46, Inspec-
tion Mode.>.
WIRING DIAGRAM:
MAIN RELAY
BATTERY
SBF-5
AIR CONTROL
SOLENOID
VALVE
lrOl
a -
@ !
%
H
EN1160
EN(D0HC TURBO)-254