Inspection Procedure
11: The column switch signal is not received.
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 lights 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?
Refer to Diagnosis code chart .
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?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the column switch.