Mitsubishi Lancer Evolution IX. Manual — part 194
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-35
Step 8. Check the wiring harness from C-228
ETACS-ECU connector terminal Nos.59 and 68 to
C-206 column switch connector terminal Nos.3
and 2.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-101, and repair if necessary.
• Check the communication lines for open circuit.
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Repair the wiring harness.
Step 9. ECU check by using the SWS monitor.
• Ignition switch: OFF
ECUS TO BE CHECKED
• COLUMN ECU
OK: "OK" is displayed on the "COLUMN
ECU" menu.
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Replace the column switch.
Step 10. Retest the system.
Check that the ETACS-ECU communicates with the
column switch.
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 :
Replace the ETACS-ECU.
AC310479
AD
Connector: C-206 <LHD>
Harness side
AC310481AD
Connector: C-206 <RHD>
Harness side
AC310450
Connector: C-228 <LHD>
AC
Junction block (rear view)
C-228 (GR)
Harness side
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
AC310461
Junction block (rear view)
Connector: C-228 <RHD>
AC
Harness side
C-228 (GR)
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
AC310446
Connector: C-101 <LHD>
AW
C-101 (L)
AC310456
Connector: C-101 <RHD>
AQ
C-101 (L)
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-36
INSPECTION PROCEDURE A-3: Communication with the ETACS-ECU is not possible.
CAUTION
Whenever the ECU is replaced, ensure that the
power supply circuit, the earthing circuit and the
communication circuit are normal.
ETACS-ECU Power Supply and SWS Communication Circuit
Wire colour code
B : Black LG : Light green
G : Green L : Blue
W : White Y : Yellow
SB : Sky blue BR : Brown
O : Orange GR : Grey
R : Red P : Pink
V : Violet PU : Purple
IGNITION
SWITCH (IG1)
POWER
SOURCE
ETACS-
ECU
COLUMN-ECU
COLUMN
SWITCH
BATTERY
RELAY
BOX
J/B SIDE
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-37
COMMENTS ON TROUBLE SYMPTOM
It is suspected that the power supply circuit to the
ETACS-ECU is defective, or the wiring harness
between the SWS monitor and the ETACS-ECU or
their connector(s) is damaged. If the battery power
supply circuit to the ECU (terminal No.20 of the
ETACS-ECU) is damaged, also check the power
supply circuit from the ignition switch (IG1) (terminal
No.8 of the ETACS-ECU), and repair if necessary. If
the earth circuit to the ECU (terminal No.3 of the
ETACS-ECU) is defective, also check the earth cir-
cuit to the sensor (terminal No.56 of the
ETACS-ECU), and repair if necessary.
TROUBLESHOOTING HINTS
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Connector check: C-226 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
Step 2. Voltage measurement at the C-226
ETACS-ECU connector
(1) Remove the ETACS-ECU, and measure at the
junction block side.
(2) Voltage between C-226 ETACS-ECU connector
terminal No.20 and body earth
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Go to Step 3.
AC310450
Connector: C-226 <LHD>
AB
Junction block side
Junction block (rear view)
AC310461
Connector: C-226 <RHD>
AE
Junction block side
Junction block
(rear view)
AC310450
Connector: C-226 <LHD>
AB
Junction block side
Junction block (rear view)
AC310461
Connector: C-226 <RHD>
AE
Junction block side
Junction block
(rear view)
AC310507AB
Connector C-226
(Junction block side)
2019
7
13
17
18
1615 14
10
11
12
9 8
2
6 5
3
4
1
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-38
Step 3. Check the wiring harness between C-226
ETACS-ECU connector terminal No.20 and
battery.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-05, intermediate connector C-129 and
junction block connector C-210, and repair if neces-
sary.
• 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.
AC310450
Connector: C-226 <LHD>
AB
Junction block side
Junction block (rear view)
AC310461
Connector: C-226 <RHD>
AE
Junction block side
Junction block
(rear view)
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
AC310448
Harness side
Junction block (front view)
Connector: C-210 <LHD>
AD
10
1
6
14
5
12
13
4
11
7
2
3
8
9
AC310458
Harness side
Junction block (front view)
Connector: C-210 <RHD>
AD
10
1
6
14
5
12
13
4
11
7
2
3
8
9
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