Subaru 2002 IMPREZA Service Manual page 476

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
BJ:DTC PO508
-
IDLE CONTROL SYSTEM CIRCUIT LOW 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
MAIN RELAY
BATTERY
1 - 1 1 1 I
AIR CONTROL
SOLENOID
VALVE
5 6 7 8
EN(D0HC TURBO)-252