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

Determine actual configuration in vehicle on model 210.0 

• In this case the components in the D2B ring (connected components) are:
  • Radio (A2)
  • Voice control module (A35/11) (on vehicles with code 813)
  • 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 to M3 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 Functions

  Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
• The voice control module (A35/11) and the CTEL interface (A34/4) or the TELEAID control module (A35/8) are installed on the left side of the trunk on a control module mount on the left wheelhouse.
• In order to add components to the D2B ring, determine the actual configuration in the vehicle.
  Fig 2: Identifying CTEL Interface (A34/4) And TELEAID Control Module (A35/8)

  Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Actual configuration for vehicles with telephone or TELE AID 

Fig 3: Identifying Configuration For Vehicles With Telephone Or Tele Aid

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Actual configuration for vehicles with telephone or TELE AID and voice control system (code 813) 

• Print out actual configuration for corresponding vehicle and use as document for conversion.
  Fig 4: Identifying Configuration For Vehicles With Telephone Or Tele Aid And Voice Control System (Code 813)

  Courtesy of MERCEDES-BENZ OF NORTH AMERICA.