Subaru 2002 IMPREZA Service Manual page 279

ENGINE MALFUNCTION INDICATOR LAMP (MIL)
ENGINE (DIAGNOSTICS)
Step
CHECK POOR CONTACT.
CHECK ECM CONNECTOR.
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
(8137) No. 15
-
(i12) No. 6:
CHECK POOR CONTACT.
Check poor contact in combination meter con-
nector.
CHECK HARNESS BETWEEN COMBINA-
TION METER AND IGNITION SWITCH CON-
NECTOR.
1)Turn the ignition switch to ON.
2)Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i10) No. 7 (+)
-
Chassis ground ( - ) :
I CHECK LAMP BULB.
Remove the engine malfunction indicator lamp
bulb.
Check
,oes the MIL come on when
haking or pulling ECM con-
ector and harness?
;the ECM connector correctly
onnected?
;
the resistance less than 1
2?
;
there poor contact in combi-
iation meter connector?
s the voltage more than 10 V?
s the lamp bulb condition OK;
Yes
Tepair poor con-
x t in ECM con-
lector.
leplace the ECM.
:Ref. to FU(D0HC
lngine Control
nodule.>
'URB0)-47,
; o to step 5.
lepair poor con-
act in combination
neter connector.
S o to step 7.
3epair combina-
:ion meter connec.
:or.
No
30 to step
3 .
Repair connection
sf ECM connector,
Repair harness
and connector.
NOTE:
In this case, repai
the following:
Open circuit in
harness between
ECM and combi-
nation meter con-
nector
8
Poor contact in
coupling connect0
Go to step
6.
Check the follow-
ing and repair if
necessary.
NOTE:
*
Brokendown
ignition relay.
Blown out fuse
(No. 5).
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
Poor contact in
ignition switch cor
nector
Replace the lamp
bulb.
EN(D0HC TURBO)-55