Mitsubishi Lancer Evolution IX. Manual — part 249
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-255
Step 2. SWS monitor data list.
Check the input signals below, which are related to
the door-ajar warning lamp.
<Selected item> ETACS ECU
• Driver's door: open
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Refer to Inspection Procedure L-3 "The door
switch (front: LH) signal is not received <LH
drive vehicles>
Inspection Procedure L-3 "The door switch
(front: RH) signal is not received <RH drive
vehicles>
."
Step 3. Pulse check
Check the input signals below, which are related to
the door-ajar warning lamp.
OK: The M.U.T.-II/III sounds or the voltmeter
needle fluctuates.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Refer to Inspection Procedure L-11 "All the
door switch signals are not received <LH
drive vehicles>
Inspection Procedure L-11 "All the door
switch signals are not received <RH drive
vehicles>
."
Step 4. Connector check: C-01 and C-02
combination meter connector
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the defective connector.
Item No.
Item name
Normal condition
Item 32
DR DOOR SW ON
System switch
Check condition
All of the door switches
A door is opened when
all the doors are closed
AC310447
Connectors: C-01, C-02
AE
<LHD>
C-01
Harness side
C-02
Harness side
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
C-01
C-02(L)
AC310457
Connectors: C-01, C-02
AB
<RHD>
C-01
Harness side
C-02
Harness side
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
C-01
C-02(L)
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-256
Step 5. Check the door-ajar warning lamp bulb.
Check the door-ajar warning lamp bulb.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Replace the door-ajar warning lamp bulb.
Step 6. Connector check: C-228 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the defective connector.
AC310450
Connector: C-228
AH
Junction block
(rear view)
Harness side
<LHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
AC310461
Harness side
Junction block (rear view)
Connector: C-228
AG
<RHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-257
Step 7. Check the wiring harness from C-228
ETACS-ECU connector terminal Nos.53 and 71 to
C-02 combination meter connector terminal
No.34 and C-01 combination meter connector
terminal No.8.
• Check the input or output lines for open circuit.
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the wiring harness.
Step 8. Retest the system.
Replace the ETACS-ECU, and then check that the
door-ajar warning lamp illuminates/extinguishes nor-
mally.
(1) Replace the ETACS-ECU.
(2) Check that the door-ajar warning lamp
illuminates/extinguishes normally.
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 combination meter.
AC310450
Connector: C-228
AH
Junction block
(rear view)
Harness side
<LHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
AC310461
Harness side
Junction block (rear view)
Connector: C-228
AG
<RHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
AC310447
Connectors: C-01, C-02
AE
<LHD>
C-01
Harness side
C-02
Harness side
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
C-01
C-02(L)
AC310457
Connectors: C-01, C-02
AB
<RHD>
C-01
Harness side
C-02
Harness side
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
C-01
C-02(L)
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-258
INPUT SIGNAL PROCEDURES
INSPECTION PROCEDURE L-1: The ignition switch (ACC) signal is not received.
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
Input signal from the ignition switch (ACC) is used to
operate the functions below. If the signal is abnormal,
these functions will not work normally.
• Windshield wiper and washer
• Rear wiper and washer
• Interior lamp automatic shutdown function
POSSIBLE CAUSES
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
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
ETACS-ECU
IGNITION
SWITCH (ACC)
J/B SIDE
Ignition Switch (ACC) Input Circuit
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