Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 472

Code No. 13 Front-ECU-related fault or fault in
connecting to ETACS-ECU
This diagnosis code is output when the signal output from the front-ECU to
ETACS-ECU contains an error for 15 consecutive communication cycles (0.6
seconds). The diagnosis code output stops when the signal output from the
front-ECU to ETACS-ECU is normal for 15 consecutive communication cycles
(0.6 seconds).
Is code 13 output when the ignition
switch is in the ON position?
YES
Measure at the front-ECU connector
A-11X.
D Disconnect the connector and
test on the relay box side.
D Continuity between terminal 31
and body earth
OK : Continuity confirmed.
NG
Check the following connector:
A-11X
OK
Check the trouble symptoms.
SWS -
Troubleshooting
NO
Measure at the front-ECU connector
A-10X.
D Disconnect the connector and
test on the relay box side.
D Voltage between terminal 7 and
body earth
OK : System voltage
OK
Replace front - ECU.
OK
Check the following connectors:
A-11X, C-135, C-102, C-228
OK
Check the trouble symptoms.
NG
Check the harness between the
front-ECU and ETACS-ECU.
OK
Replace front-ECU.
NG
Repair
NG
Check the harness between the
front-ECU and the body earth, and
repair if necessary.
Probable cause
D front-ECU fault
D ETACS-ECU fault
D Harness or connector fault
NG
Check the following connector:
A-10X
OK
Check the trouble
symptoms.
NG
Check the harness between the
front-ECU and the battery.
OK
Check the trouble
symptoms.
NG
Replace ETACS-ECU.
NG
Repair
NG
Repair
Check the trouble symptoms.
Replace ETACS-ECU.
54B-5
NG
Repair
NG
Repair
NG