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DTC U0428 SAS (CAN Message)
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • If DTC U0428 is set in ASC-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect DTC may be set. In this case, the set DTC is not highly reliable.
  • Before replacing the ECU, ensure that the communication circuit is normal.
 
 
OPERATION
The steering wheel sensor outputs the steering wheel status to ASC-ECU via the CAN bus lines.
 
 
 
DTC SET CONDITIONS
This DTC is set when ASC-ECU has detected the communication error in the steering wheel sensor.
 
 
 
PROBABLE CAUSES
  • Steering wheel sensor malfunction
  • ASC-ECU malfunction
  • External noise interference
 
 
 
 
DIAGNOSIS
1. Check scan tool (M.U.T.-IIISE) CAN bus diagnostics
2. Check whether the DTC is set again.