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Inspection Procedure 11: The column switch signal is not received.
 
 
 
 
TECHNICAL DESCRIPTION (COMMENT)
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.
 
 
TROUBLESHOOTING HINTS
  • The column switch assembly (integrated with steering wheel sensor) may be defective
  • The LIN bus line may be defective
 
 
DIAGNOSIS
Using scan tool (M.U.T.-III), read the ETACS diagnostic trouble code.
(1)
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III) ."
(2) Check if DTC is set in the ETACS-ECU.
Is the DTC set?
Refer to DTC chart .
Replace the column switch assembly (Integrated with steering wheel sensor).