Fig. 3: Identifying Position Of Identification On Fiber Optic Cable Wiring Harness
Routing
The inserts (5) of the fiber optic cable modules may only be routed as in production. The fiber optic cable
modules must always be provided with a protective cap when routing. For every vehicle model, the sequence of
components in the D2B ring is specifically predetermined. The components are connected by fiber optic cable
modules. They are secured to a wiring harness with an orange-colored casing.
Fig. 4: Identifying Fiber Optic Cable Modules Insert
Danger of breaking! Do not kink fiber optic cable, route over sharp edges or bend in radii smaller than 25
mm. Tensile forces on inserts must not exceed 65 N.
The fiber optic cable must not be exposed to temperatures greater than 85°C or lower than -40°C. Do not
squeeze fiber optic cable, in other words do not compress with clamps or cable ties.
Connection between the devices
The Digital Data Bus ring (D2B) connects the new radio generation and COMAND (monitor) to the CD
changer (CDC) (USA preinstallation), telephone and portable CTEL. The sound amplifier remains wired as
COMAND (monitor) to the CD changer (CDC) (USA preinstallation), telephone and portable CTEL. The sound
amplifier remains wired as before with Models 129, 170, 202, 208 and 210. The radio and COMAND as head
unit (HU) performs the master function and also forms the interface to the Control Area Network bus Class B
(interior) (CAN-B) (for vehicles with multifunction steering wheel).
Ring sequence of vehicles/models/interface
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me