Subaru LEGACY 2003 Service Manual page 40

ENGINE MALFUNCTION INDICATOR LAMP (MIL)
ENGINE (DIAGNOSTICS)
1 CHECK HARNESS BETWEEN ECM CON-
NECTOR AND ENGINE GROUNDING TER-
MINAL.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Measure resistance of harness between
ECM connector and engine ground.
Connector & terminal
(B135) No. 14 — Engine ground:
Is the measured value less than the speci-
fied value?
Step
EN(H4SOw/oOBD)-38
Value
5 Ω
Yes
Repair short circuit Replace ECM.
in harness <Ref. to
between ECM and FU(H4SOw/
test mode connec- oOBD)-42, Engine
tor. Control Module.>
No