Subaru Legacy 2003 Service Manual page 454

ENGINE MALFUNCTION INDICATOR LAMP (MI)
Step
1 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Turn ignition switch to ON.
Does the MI come on?
Value
MI illuminates.
EN(H4SO)-57
ENGINE (DIAGNOSTICS)
Yes
Repair short circuit Replace ECM.
in harness <Ref. to
between combina- FU(H4SO)-45,
tion meter and Engine Control
ECM connector. Module.>
No