Mitsubishi Lancer Evolution IX. Manual — part 192
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-27
Step 2. Check that the M.U.T.-II/III can
communicate with the system.
When the ignition switch is turned ON, check if the
M.U.T.-II/III can communicate with the system.
Q: Is the check result normal?
YES :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
NO :
Go to Step 3.
Step 3. Connector check: C-228 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Repair the defective connector.
Step 4. Resistance measurement at the C-228
ETACS-ECU connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Resistance between C-228 ETACS-ECU
connector terminal No.56 and body earth
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 5.
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
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
AC310506AB
Connector C-228
(Harness side)
68
74
63
66
72
73
67
6564
61
70
71
62
69
60
57
58
59
5655
52
54 53
51
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-28
Step 5. Check the wiring harness between C-228
ETACS-ECU connector terminal No.56 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: Are the check results 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 6. Connector check: C-14 diagnosis
connector
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the defective connector.
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
AC310452
Connector: C-06 <LHD>
AB
C-06 (GR)
AC310456
Connector: C-06 <RHD>
AB
C-06 (GR)
AC310446
Connector: C-14 <LHD>
AB
Front side
C-14 (B)
AC310456
Connector: C-14 <RHD>
AC
Front side
C-14 (B)
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-29
Step 7. Check the wiring harness from C-228
ETACS-ECU connector terminal Nos.51 and 67 to
C-14 diagnosis connector terminal Nos.9 and 1.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-23 <LH drive vehicles> or C-21 <RH
drive vehicles>, and repair if necessary.
• Check the communication lines for open circuit.
Q: Are the check results normal?
YES :
Replace the ETACS-ECU.
NO :
Repair the wiring harness.
AC310446
Connector: C-14 <LHD>
AB
Front side
C-14 (B)
AC310456
Connector: C-14 <RHD>
AC
Front side
C-14 (B)
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-23 <LHD>
AY
C-23 (B)
AC310454
AB
Connector: C-21 <RHD>
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-30
INSPECTION PROCEDURE A-2: Communication with the column switch (column-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.
BATTERY
IGNITION
SWITCH (IG1)
COLUMN
SWITCH
Wire colour code
B : Black
LG : Light green
G : Green
L: Blue
W : White
Y: Yellow
SB : Sky blue
BR : Brown
O : Orange
GR : Gray
R : Red
P : Pink
V : Violet
COLUMN-ECU
ETACS-ECU
RELAY
BOX
LHD
RHD
LHD
RHD
NOTE
: LHD
: RHD
Column Switch Power Supply and SWS Communication Circuit
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