Subaru Legacy 2005 Service Manual page 1288

ENGINE (DIAGNOSTICS)
Step
2 CHECK HARNESS BETWEEN ECM CON-
NECTOR AND CHASSIS GROUND TERMI-
NAL.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Measure the resistance of harness
between ECM connector and chassis ground.
Connector & terminal
(B137) No. 15 — Chassis ground:
Malfunction Indicator Light
Is the resistance less than 5
Ω?
EN(H4DOTC)(diag)-48
Check
Repair the short
circuit of harness
between ECM and
test mode connec-
tor.
Yes No
Replace the ECM.
<Ref. to
FU(H4DOTC)-34,
Engine Control
Module (ECM).>