Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 1194

Inspection Procedure 4
Engine warning lamp stays illuminated and does not turn
OFF.
The engine-ECU illuminates the engine warning lamp when the occurrence of a
diagnosis code is recorded.
MUT-II Self-Diag code
D Is a diagnosis code output?
NO
Check the following connector:
C-122
OK
Measure at the C-122 Engine-ECU
connector.
D Disconnect the connector to
measure at the harness side.
D Ignition switch: ON
D Voltage between terminal No. 36
and earth.
OK: System voltage
NG
Check the following connector:
C-130
OK
Check and repair the harness between
the combination meter and engine-
ECU.
D Check for short-circuit of the output
cable.
MPI -
Troubleshooting
YES
INSPECTION CHART FOR DIAGNO-
SIS CODE
(Refer to P.13A-12.)
NG
Repair
OK
Check the trouble symptoms.
Replace the engine-ECU.
NG
Repair
Probable cause
D Engine-ECU malfunction
OK
NG
13A-57
Intermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)