Notes on D2B ring - AH82.70-P-0001-03B

Determine actual configuration in vehicle on model 210.2 

• In this case the components in the D2B ring (connected components) are:
  • Radio (A2)
  • CTL interface (A34/4) or TELE AID control module (A35/8)
• The information in the D2B ring travels only in one direction (arrows). The information enters the fiber optic cable modules M1 and M2 at the white insert (ws) and exits through the red insert (rt) at the next ring component.

  The D2B ring functions only as closed circuit.

  Fig 1: Identifying D2B Ring Components

  Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
• The CTEL interface (A34/4) and the TELE AID control module (A35/8) are installed at the rear left.
• In order to add components to the D2B ring, determine the actual configuration in the vehicle.
  Fig 2: Identifying CTEL Interface And TELE AID Control Module

  Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Actual configuration in vehicle 

• Print out actual configuration and use as document for conversion.
  Fig 3: Identifying Actual Configuration In Vehicle

  Courtesy of MERCEDES-BENZ OF NORTH AMERICA.