Subaru 2002 Impreza - Page 323

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
! CHECK CURRENT DATA.
1)Turn the ignition switch to OFF.
2)Repair the battery short circuit in harness
between ECM and rear oxygen sensor connec-
tor.
3)Turn the ignition switch
to ON.
4)Read the data of rear oxygen sensor heater
current using Subaru Select Monitor or the
OBD-II general scan
tool.
NOTE:
*Subaru Select Monitor
For detailed operation procedure, refer to the
“READ CURRENT DATA
FOR ENGINE. <Ref.
to EN(D0HC TURBO)-38, Subaru Select Mon-
itor.>
*OBD-II general scan tool
For detailed operation procedure, refer to the
OBD-ll General Scan Tool Instruction Manual.
Check poor contact in ECM connector.
5 CHECK POOR CONTACT.
Check
Is the value more than 7 A?
Is there poor contact in ECM
connector?
I
Yes
Replace the ECM.
<Ref. to FU(D0HC
Engine Control
Module.>
TURBO)-47,
Repair poor con-
tact in ECM con-
nector.
No
!ND
END
EN(D0HC TURBO)-99