DTC U1701: Communication Error In The Column Switch: Notes
NOTE:
This troubleshooting procedure requires the use of scan tool MB991958 and SWS monitor kit MB991813. For details on how to use the SWS monitor, refer to "HOW TO USE SWS MONITOR
."
CAUTION:
If DTC U1701 is set in the ETACS-ECU, always diagnose the CAN main bus line.