Subaru Legacy 2002 Service Manual page 784

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
2 CHECK HARNESS BETWEEN ECM AND
MAIN FUSE BOX CONNECTOR.
1) Disconnect connector from ECM.
2) Measure resistance of harness between
ECM and chassis ground.
Connector & terminal
(B136) No. 9 — Chassis ground:
3 CHECK FUSE SBF-5.
Step
Is the resistance less than
10 Ω?
Is fuse blown?
EN-267
Check Yes
Repair ground
short circuit in
harness between
ECM connector
and battery termi-
nal.
Replace fuse.
Engine (Diagnostics)
No
Go to step 3.
Repair harness
and connector.
NOTE:
In this case,
repair the follow-
ing:
¼ Open circuit in
harness between
ECM and battery
¼ Poor contact in
ECM connector
¼ Poor contact in
battery terminal