Diagnosis Code Inspection Procedures - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

54B-4

DIAGNOSIS CODE INSPECTION PROCEDURES

Code No. 11 ETACS-ECU-related failure
The ETACS-ECU monitors its own communication data, outputting this diagnosis
code when data error occurs 15 consecutive times (for 0.6 seconds). The
diagnosis code output stops when the ETACS-ECU confirms that its data was
transmitted normally 15 consecutive times (for 0.6 seconds).
Replace ETACS-ECU.
Code No. 12 Column switch-related fault or fault in
connecting to ETACS-ECU
This diagnosis code is output when a column switch outputs a signal (at least
three times a second) that is not in accordance with the transmission request
signal from ETACS-ECU. The diagnosis code output stops when the column
switch continuously outputs for one second a signal that accords with the
transmission request signal from ETACS-ECU.
Is code 12 output when the ignition
switch is in the ON position?
YES
Test at the C-203 column switch
connector.
D Disconnect the connector and
test on the harness side.
D Continuity between terminal 4
and body earth
OK : Continuity confirmed.
NG
Check the following connectors:
C-203, C-08
OK
Check the trouble symptoms.
SWS -
Troubleshooting
NO Test at the C-203 column switch
connector.
D Disconnect the connector and
test on the harness side.
D Voltage between terminal 1 and
body earth
OK : System voltage
Replace column switch.
OK
Check the following connectors:
C-203, C-102, C-228
Check the trouble symptoms.
Check the harness between the
column switch and ETACS-ECU.
Replace column switch.
NG
Repair
NG
Check the harness between the
column switch and the body earth,
and repair if necessary.
Probable cause
D ETACS-ECU fault
Probable cause
D Column switch fault
D ETACS-ECU fault
D Harness or connector fault
NG
OK
NG
OK
NG
NG
OK
Check the following connectors:
<L.H. drive vehicles>
C- 203, C- 05, C- 209
<R.H. drive vehicles>
C-203, C-05, C-135
OK NG
Check the trouble
Repair
symptoms.
NG
Check the harness between the
column switch and the battery.
OK
Check the trouble
Repair
symptoms.
NG
Replace ETACS-ECU.
Repair
Repair
Check the trouble symptoms.
NG
Replace ETACS-ECU.
NG