Mitsubishi Lancer (4A9 engine). Manual - part 228
ETACS
CHASSIS ELECTRICAL
54A-574
Inspection Procedure 11: The column switch signal is not received.
CAUTION
Before replacing the ECU, ensure that the com-
munication circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU receives the column switch signal
via the LIN communication. If there is an abnormality
to column switch or LIN bus line, the lamps and
wiper/washer do not work normally.
PROBABLE CAUSES
• Malfunction of column switch
• Faulty LIN bus line
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III diagnosis code
Check if diagnosis code is set to the ETACS-ECU.
Q: Is the diagnosis code set?
YES :
Refer to Diagnosis code chart .
NO :
Go to Step 2.
STEP 2. Column switch check
• Check the continuity for wiper switch. Refer to .
• Check the continuity for column switch (switch
body part). Refer to .
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the wiper switch or column switch
(switch body part).
STEP 3. Check of the troubles
Check that the column switch signal input is normal.
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 lighting switch.
Inspection Procedure 12: The hood latch switch signal is not received.
CAUTION
Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communica-
tion circuit are normal.
Hood Switch Input Circuit
ETACS-
ECU
HOOD
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 : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver