Mitsubishi Lancer Evolution IX. Manual — part 195
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-39
Step 4. Resistance measurement at the C-226
ETACS-ECU connector
(1) Remove the ETACS-ECU, and measure at the
junction block side.
(2) Resistance between C-226 ETACS-ECU
connector terminal No.3 and body earth
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 5.
Step 5. Check the wiring harness between C-226
ETACS-ECU connector terminal No.3 and body
earth.
NOTE:
Prior to the wiring harness inspection, check junction
block connector C-214, and repair if necessary.
• Check the earth wires for open circuit.
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)
AC310506AC
Connector C-226
(Junction block side)
2019
7
13
17
18
1615 14
10
11
12
9 8
2
6 5
3
4
1
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)
AC310448
Harness side
Junction block (front view)
Connector: C-214 <LHD>
AE
21
7
16 15
17
18
20 19
1
2
3
4
5
6
23 22
24
25
28
26
27
9
8
10
11
14
12
13
AC310458
Harness side
Junction block (front view)
Connector: C-214 <RHD>
AE
21
7
16 15
17
18
20 19
1
2
3
4
5
6
23 22
24
25
28
26
27
9
8
10
11
14
12
13
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-40
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 6. Connector check: C-228 ETACS-ECU
connector and C-206 column switch connector
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the defective connector.
Step 7. 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.
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
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
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-41
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 8.
NO :
Repair the wiring harness.
Step 8. ECU check by using the SWS monitor.
• 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 :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Replace the ETACS-ECU.
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-42
INSPECTION PROCEDURE A-4: Communication with the front-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.
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
IGNITION
SWITCH (IG2)
ETACS-ECU
POWER
SOURCE
FRONT-ECU
BATTERY
RELAY
BOX
NOTE
: LHD
: RHD
Front-ECU Power Supply and SWS Communication Circuit
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