Subaru Legacy 2002 Service Manual page 616

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
2 CHECK CURRENT DATA.
1) Turn ignition switch to OFF.
2) Repair battery short circuit in harness
between ECM and rear oxygen sensor con-
nector.
3) Turn ignition switch to ON.
4) Read data of rear oxygen sensor heater
current using Subaru Select Monitor or the
OBD-II general scan tool.
NOTE:
¼ Subaru Select Monitor
For detailed operation procedure, refer to the
"READ CURRENT DATA FOR ENGINE".
<Ref. to EN-34, Subaru Select Monitor.>
¼ OBD-II general scan tool
For detailed operation procedure, refer to the
OBD-II General Scan Tool Instruction Manual.
3 CHECK POOR CONTACT.
Check poor contact in ECM connector.
Step
Is the value more than 7
A?
Is there poor contact in
ECM connector?
EN-99
Check Yes
Replace ECM.
<Ref. to FU-51,
Engine Control
Module.>
Repair poor con-
tact in ECM con-
nector.
Engine (Diagnostics)
No
END
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