Inspection Procedure 9: The column switch signal is not received.

caution

Whenever the ECU is replaced, ensure that the communication 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 lights and wiper/washer do not work normally.

PROBABLE CAUSES

Malfunction of column switch
Faulty LIN bus line

DIAGNOSIS PROCEDURE

M.U.T.-III diagnosis code

Check if diagnosis code is stored in the ETACS-ECU.

Q. Is the diagnosis code stored?

Refer to Diagnosis code chart.

Replace the column switch.