Subaru FORESTER 2001 Service Manual page 326

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK INPUT SIGNAL FOR ECM.
1) Turn ignition switch to OFF.
2) Measure voltage between ECM and chas-
sis ground.
Connector & terminal
(B137) No. 10 (+) — Chassis ground
(−):
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
(B137) No. 10 — Chassis ground:
3 CHECK FUSE SBF-5.
Step
Is the voltage more than 10
V?
Is the resistance less than
10 Ω?
Is fuse blown?
EN(DOHC TURBO)-325
Check Yes
Repair poor con-
tact in ECM con-
nector.
Repair ground
short circuit in
harness between
ECM connector
and battery termi-
nal.
Replace fuse.
Engine (Diagnostics)
No
Go to step 2.
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