Subaru 2002 Impreza - Page 322

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENG I N E lDl AG NOSTICS)
Step
1 . CHECK INPUT SIGNAL FOR ECM.
Measure the voltage between ECM connector
and chassis ground.
Connector & terminal
(8136) No. 13 (+) - Chassis ground (-):
D: DTC PO038 - REAR OXYGEN SENSOR HEATER CIRCUIT HIGH INPUT -
DTC DETECTING CONDITION:
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:
Two consecutive driving cycles with fault
Check
Is the voltage more than 8 V?
MAIN RELAY BATTERY
1
REAR
OXYGEN SENSOR
EN1144
EN(D0HC TURBO)-98