CAN Bus DDE

Data exchange between the following control units takes place via the CAN bus:

• DDE control unit
  
• Instrument cluster control unit
  
• ABS/DSC control unit
  
• Steering angle sensor
  

Troubleshooting

Following faults are recognized concerning the CAN bus:

• Hardware fault on DDE control unit (CAN Controller)
  The affected values are replaced by substitute values.
  
• Communication fault between the control units
  Consequence: The functions whose messages are affected by failure of the CAN bus fail, e.g. ASC and engine drag torque control.