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Inspection Procedure 11: The column switch signal is not received.
 
 
cautionThe steering wheel sensor is incorporated in the column switch assembly. When you replace the switch, you must always calibrate the sensor to make the ASC-ECU learn the neutral position of the steering wheel (Refer to GROUP 35C - On-vehicle service - Steering wheel sensor calibration ).
 
 
TECHNICAL DESCRIPTION (COMMENT)
The ETACS-ECU receives the column switch signal via the LIN communication. If the column switch or LIN bus line fails, the lights and wiper/washer do not work normally.
 
 
TROUBLESHOOTING HINTS
  • The column switch assembly (integrated with steering wheel sensor) may be defective
  • The LIN bus line may be defective
 
 
DIAGNOSIS
1. Check scan tool (M.U.T.-IIISE) DTC.