Mitsubishi Lancer Evolution IX. Manual — part 193
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SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-31
COMMENTS ON TROUBLE SYMPTOM
The power supply circuit to the column switch (col-
umn-ECU) may be defective. If the wiring harness of
the battery power supply circuit for the ECU (column
switch terminal No.1) is defective, also check the
power supply circuit to the ignition switch (IG1) (col-
umn switch terminal No.9) and repair if necessary.
TROUBLESHOOTING HINTS
• Malfunction of the ETACS-ECU
• Malfunction of the column switch
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the
ETACS-ECU and the SWS communication lines are
normal.
• Ignition switch: OFF
ECUS TO BE CHECKED
• ETACS ECU
OK: "OK" is displayed on the "ETACS ECU"
menu.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
Step 2. Connector check: C-206 column switch
connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
AC310479
AD
Connector: C-206 <LHD>
Harness side
AC310481AD
Connector: C-206 <RHD>
Harness side
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SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-32
Step 3. Voltage measurement at C-206 column
switch connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Voltage between C-206 column switch connector
terminal No.1 and body earth
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
Step 4. Check the wiring harness between C-206
column switch connector terminal No.1 and
battery.
AC310479
AD
Connector: C-206 <LHD>
Harness side
AC310481AD
Connector: C-206 <RHD>
Harness side
AC310507 AF
Connector C-206
(Harness side)
10
5
6
7
9 8
3
4
2 1
AC310479
AD
Connector: C-206 <LHD>
Harness side
AC310481AD
Connector: C-206 <RHD>
Harness side
![](/vehicles/winoney/wruvea/ger/ere.png)
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-33
NOTE:
Prior to the wiring harness inspection, check interme-
diate connector C-129, joint connector C-05, and
repair if necessary.
• Check the power supply line for open circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
Step 5. Resistance measurement at C-206
column switch connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Continuity between C-206 column switch
connector terminal No.4 and body earth
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 6.
AC310447
Connectors: C-05, C-129 <LHD>
C-05 (GR)
C-129
C-05
C-129
AC
AC310455
Connectors: C-05, C-129 <RHD>
C-05 (GR)
C-129
C-05
C-129
AB
AC310479
AD
Connector: C-206 <LHD>
Harness side
AC310481AD
Connector: C-206 <RHD>
Harness side
AC310506AK
Connector C-206
(Harness side)
10
5
6
7
9 8
3
4
2 1
![](/vehicles/winoney/wruvea/ger/puretelenobo.png)
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-34
Step 6. Check the wiring harness between C-206
column switch connector terminal No.4 and body
earth.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-06, and repair if necessary.
• Check the earth wires for open circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
Step 7. Connector check: C-228 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the defective connector.
AC310479
AD
Connector: C-206 <LHD>
Harness side
AC310481AD
Connector: C-206 <RHD>
Harness side
AC310452
Connector: C-06 <LHD>
AB
C-06 (GR)
AC310456
Connector: C-06 <RHD>
AB
C-06 (GR)
AC310450
Connector: C-228 <LHD>
AC
Junction block (rear view)
C-228 (GR)
Harness side
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AC310461
Junction block (rear view)
Connector: C-228 <RHD>
AC
Harness side
C-228 (GR)
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