Subaru IMPREZA 2002 Service Manual page 373

ENGINE MALFUNCTION INDICATOR LAMP (MIL)
ENGINE (DIAGNOSTICS)
Step
CHECK POOR CONTACT.
CHECK ECM CONNECTOR.
Check
Does the MIL come on when
shaking or pulling ECM con-
nector and harness?
Is the ECM connector correctly
connected?
CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM CONNECTOR.
1)Turn the ignition switch to OFF.
2)Remove the combination meter. <Ref. to
IDI-11, Combination Meter Assembly.>
3)Disconnect the connector from ECM and
combination meter.
4)Measure the resistance of harness between
ECM and combination meter connector.
Connector & terminal
(8134)
No.
11
-
(i12)
No.
6:
I
CHECK POOR CONTACT.
Check poor contact in combination meter con-
nector.
I
CHECK HARNESS BETWEEN COMBINA-
I
Is the resistance less than 1
I s
there poor contact in combi-
I s the voltage more than 10 V?
nation meter connector?
r
CHECK LAMP BULB.
Remove the engine malfunction indicator lamp
bulb.
s the lamp bulb condition OK?
Yes
lepair poor con-
act in ECM con-
ector.
ieplace the ECM.
Ref. to
ingine Control
lodule.>
i o to step 5.
'U (S0HC)-47,
lepair poor con-
x t in combination
neter connector.
i o to step
7.
3epair combina-
ion meter connec-
or.
No
30 to step 3.
3epair connection
i f ECM connector.
qepair harness
m d connector.
VOTE:
In this case, repaii
the following:
Open circuit in
iarness between
ECM and combi-
iation meter con-
lector
Poor contact in
:oupling connector
Go to step 6.
02)
Check the follow-
ing and repair if
necessary.
NOTE:
Brokendown
ignition relay.
b
Blown out fuse
(No. 5).
b
If replaced fuse
(No. 5 ) blows eas-
ily, check the har-
ness for short
circuit of harness
between fuse (No.
5) and ignition
relay connector.
Open or short
circuit in harness
between fuse (No.
5) and battery ter-
minal
Open circuit in
harness between
fuse (No.
5)
and
ignition relay con-
nector
Poor contact in
ignition relay con-
nector
9
Poor contact in
ignition switch con,
nector
Replace the lamp
bulb.
EN(S0HC)-49