Mitsubishi Lancer (4A9 engine). Manual - part 115
HEADLAMP
CHASSIS ELECTRICAL
54A-122
STEP 2. M.U.T.-III data list
Using the ETACS-ECU service data, check the sig-
nals related to the illumination of turn-signal lamp.
• Turn the ignition switch to the ON position.
• Turn the turn-signal lamp switch to the left posi-
tion.
• Turn the turn-signal lamp switch to the right posi-
tion.
OK: Normal conditions are displayed for all
the items.
Q: Is the check result normal?
Normal conditions are displayed for all the items. :
Go to Step 3.
Normal condition is not displayed for item No. 254.
:
Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 2 "The ignition switch
(IG1) signal is not received" .
Normal condition is not displayed for item No. 343
or 344. :
Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 11 "The column
switch signal is not received" .
STEP 3. Retest the system
Check that the turn-signal lamps illuminate.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Replace the ETACS-ECU.
Inspection Procedure 11: The comfort flashing function does not work normally.
CAUTION
Whenever the ECU is replaced, ensure that the
power supply circuit, the earth circuit and the
communication circuit are normal.
COMMENTS ON TROUBLE SYMPTOM
If the comfort flashing function does not work nor-
mally, the turn-signal lamp switch input circuit(s) and
ETACS-ECU may have a problem.
PROBABLE CAUSES
• Malfunction of column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. ETACS-ECU customise function check
Use the ETACS-ECU customise function to check
that the "Comfort flasher" is set to "Enable."
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Use the ETACS-ECU customise function to
set the "Comfort flasher" to "Enable" (Refer
to ).
STEP 2. M.U.T.-III diagnosis code
Check if diagnosis code is set to the ETACS-ECU.
Q: Is the diagnosis code set?
YES :
Troubleshoot the ETACS-ECU. Refer to .
NO :
Go to Step 3.
STEP 3. Check that the turn-signal lamps
operate.
Check that the turn-signal lamps work normally when
the ignition switch is in the ON position.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Refer to Inspection Procedure 10 "None of
the turn-signal lamps illuminate" .
STEP 4. Retest the system
Check that the comfort flashing function works nor-
mally.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Replace the ETACS-ECU.
Item No.
Item name
Normal
condition
Item 254
IG voltage
System voltage
Item 343
Turn switch left ON
Item No.
Item name
Normal
condition
Item 344
Turn switch
right
ON