Mitsubishi Lancer Evolution IX. Manual — part 231
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-183
INSPECTION PROCEDURE H-6: The headlamp automatic shutdown function does not work normally.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU operates this function in accord-
ance with the input signals below.
• Ignition switch (IG1)
• Driver's door switch
• Tail lamp switch
• Headlamp switch
If this function does not work normally, these input
signal circuit(s), the front-ECU or the ETACS-ECU
may be defective. On vehicles with keyless entry
system, note that this function can be disabled/ena-
bled by the customize function (default setting; ena-
bled).
POSSIBLE CAUSES
• Malfunction of the driver's door switch
• Malfunction of the front-ECU
• Malfunction of the column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Customize function by using the SWS
monitor.
Check that the headlamp automatic shutdown func-
tion has been enabled by using the adjustment func-
tion.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Enable the headlamp automatic shutdown
function by using the adjustment function.
Refer to GROUP 54B
− Configuration
.
ETACS-ECU
INPUT SIGNAL
· DRIVER'S DOOR SWITCH
· TAIL LAMP SWITCH
· IGNITION SWITCH (IG1)
· HEADLAMP SWITCH
Headlamp Automatic Shutdown Function
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-184
Step 2. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the
column switch (column-ECU), the ETACS-ECU and
the front-ECU and the SWS communication lines are
normal.
• Ignition switch: OFF
ECUS TO BE CHECKED
• COLUMN ECU
• ETACS ECU
• FRONT ECU
OK: "OK" is displayed for all the items
Q: Is the check result normal?
"OK" is displayed for all the items :
Go to Step 3.
"NG" is displayed on the "COLUMN ECU" menu. :
Refer to Inspection Procedure A-2
"Communication with the column switch
(column-ECU) is not possible
."
"NG" is displayed on the "ETACS ECU" menu. :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
"NG" is displayed on the "FRONT ECU" menu. :
Refer to Inspection Procedure A-4
"Communication with the front-ECU is not
possible
."
Step 3. Function diagnosis by using the SWS
monitor.
Check the SWS communication signal, which are
related to the headlamp automatic shutdown func-
tion.
<Selected item> LIGHTING - HD AUTO-CUT
• Ignition switch: from ON to OFF
• Lighting switch: "TAIL" or "HEAD"
• Driver's door: open
OK: Normal conditions displayed for all the
items
Q: Is the check result normal?
Normal conditions displayed for all the items :
Go
to Step 4.
Normal condition is not displayed for item 00 or 01.
:
Refer to Inspection Procedure L-4 "The
column switch (lighting and turn-signal lamp
switch) signal is not received
Normal condition is not displayed for item No.30. :
Refer to Inspection Procedure L-2 "The
ignition switch (IG1) signal is not received
."
Normal condition is not displayed for item No.32. :
Refer to Inspection Procedure L-3 "The door
switch (front: LH) signal is not received <LH
drive vehicles>
," or refer to
Inspection Procedure L-3 "The door switch
(front: RH) signal is not received <RH drive
vehicles>
Normal condition is not displayed for item 35 or 70.
:
Replace the front-ECU.
Step 4. Retest the system.
Check that the headlamp automatic shutdown func-
tion works 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 ETACS-ECU.
Item No. Item name
Normal condition
Item 00
HEADLAMP SW ON when the lighting
switch is at HEAD
Item 01
TAIL LAMP SW
ON when the lighting
switch is at TAIL
Item 30
IG SW(IG1)
from ON to OFF
Item 70
FRONT ECU
ACK
SLEEP ACK or
NORMAL ACK
Item No. Item name
Normal condition
Item 32
DR DOOR SW
ON
Item 35
HD AUTO-CUT
OFF
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-185
INSPECTION PROCEDURE H-7: Any of tail lamps, position lamps or licence plate lamps does not
illuminate. <LH drive vehicles>
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
FRONT-ECU
COMBINATION METER
LICENCE
PLATE
LAMP
(LH)
(RH)
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
TAIL LAMP
RELAY
REAR
COMBINATION
LAMP
(TAIL: LH)
HEADLAMP
ASSEMBLY
(POSITION)
(LH)
(RH)
REAR
COMBINATION
LAMP
(TAIL: RH)
Taillamps, Position Lamps and License Plate Lamps Circuit <LHD>
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-186
COMMENTS ON TROUBLE SYMPTOM
If the tail lamps, the position lamps or the licence
plate lamps do not illuminate, the wiring harness con-
nector(s), the bulb or the fuse may be defective or
burned out.
POSSIBLE CAUSES
• Burned-out bulb
• Damaged harness wires and connectors
DIAGNOSTIC PROCEDURE
Step 1. Connector check: F-14 <tail lamp LH> or
F-08 <tail lamp RH> rear combination lamp
connector, A-31 <position lamp LH> or A-39
<position lamp RH> headlamp assembly
connector, F-11 <licence plate lamp LH> or F-10
<licence plate lamp RH> licence plate lamp
connector, C-02 <tail lamp indicator>
combination meter connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
Step 2. Check the bulbs of the tail lamps, the
position lamp, the licence plate lamp or tail lamp
indicator.
Check the bulb of the lamp which does not illumi-
nate.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the bulb of the lamp which does not
illuminate.
AC310468
Connectors: F-08, F-10, F-11, F-14
<LHD>
AD
F-08(B)
F-10(GR)
F-11(GR)
F-14(B)
Harness side
F-08
Harness side
F-11
Harness side
F-10
Harness side
F-14
AC310542
Connectors: A-31
AD
A-31(B)
Harness side
A-31
<LHD>
AC310431
Connectors: A-39
AE
A-39(B)
Harness side
A-39
<LHD>
AC310446
Connector: C-02
<LHD>
AK
Harness side
31
35
36
37
38
39
40
41
45
46
47
48
49
50
51
34
44
33
43
32
42
C-02 (L)
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