Subaru Legacy 2002 Service Manual page 568

ENGINE MALFUNCTION INDICATOR LAMP (MIL)
No.
2 CHECK POOR CONTACT.
3 CHECK ECM CONNECTOR.
4 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1) Turn ignition switch to OFF.
2) Remove combination meter. <Ref. to IDI-
15, Combination Meter Assembly.>
3) Disconnect connector from ECM and com-
bination meter.
4) Measure resistance of harness between
ECM and combination meter connector.
Connector & terminal
LHD
(B134) No. 11 — (i12) No. 5:
RHD
(B134) No. 11 — (i12) No. 15:
5 CHECK POOR CONTACT.
Check poor contact in combination meter con-
nector.
6 CHECK HARNESS BETWEEN COMBINA-
TION METER AND IGNITION SWITCH CON-
NECTOR.
1) Turn ignition switch to ON.
2) Measure voltage between combination
meter connector and chassis ground.
Connector & terminal
(i12) No. 3 (+) — Chassis ground (−):
Step
Does the MIL come on
when shaking or pulling
ECM connector and har-
ness?
Is ECM connector correctly
connected?
Is resistance less than 1
Ω?
Is there poor contact in
combination meter connec-
tor?
Is voltage more than 10 V? Go to step 7.
EN-51
Check Yes
Repair poor con-
tact in ECM con-
nector.
Replace ECM.
<Ref. to FU-51,
Engine Control
Module.>
Go to step 5.
Repair poor con-
tact in combina-
tion meter con-
nector.
Engine (Diagnostics)
No
Go to step 3.
Repair connection
of ECM connec-
tor.
Repair harness
and connector.
NOTE:
In this case,
repair the follow-
ing:
¼ Open circuit in
harness between
ECM and combi-
nation meter con-
nector
¼ Poor contact in
coupling connec-
tor (B36)
Go to step 6.
Check the follow-
ing and repair if
necessary.
NOTE:
¼ Broken down
ignition relay.
¼ Blown out fuse
(No. 5).
¼ If replaced fuse
(No. 5) blows
easily, check the
harness for short
circuit of harness
between fuse (No.
5) and ignition
relay connector.
¼ Open or short
circuit in harness
between fuse (No.
5) and battery ter-
minal
¼ Open circuit in
harness between
fuse (No. 5) and
ignition relay con-
nector
¼ Poor contact in
ignition relay con-
nector
¼ Poor contact in
ignition switch
connector