Communication System, Through 29 May 2009

Communication System, through 29 May 2009

The components of the systems Radio (R)/Navigation System with CD Drive Control Module (J401)/Media Player, Position 1 (R118)/Digital Sound System Control Module (J525)/Data Bus On Board Diagnostic Interface (J533) are combined with one another in a "ring". This "ring" represents the optical MOST-Bus.

The connection to the other BUS systems in the vehicle are performed by the Data Bus On Board Diagnostic Interface.

The "central control module" is the Front Information Display Control Head Control Module (J523). The transfer of signals representing the instrument cluster display occurs via the MOST-Bus to Data Bus On Board Diagnostic Interface and from there via CAN-Bus (instrument cluster) to the instrument cluster.

Fault finding is performed via "Guided Fault Finding" using the Vehicle Diagnosis, Testing and Information System (VAS5051).





Information on Optical MOST-Bus

In addition to the CAN-Bus systems, an optical data bus system has been implemented.

Data exchange of the systems Radio (R)/Digital Sound System Control Module (J525)/CD Changer (R41)/Navigation System with CD Drive Control Module (J401)/Data Bus On Board Diagnostic Interface (J533) occurs via the MOST-Bus.

A fiber optic cable is utilized as the connecting cable.

Fiber optic cables are routed inside corrugated tubes for protection.

Make sure that the face surfaces of the connectors do not become soiled.

If the connectors are disconnected: Attach protective cap for cable connector (VAS 6223/9) from Fiber Optic Plier Repair Set (VAS6223).





Fiber optic cables cannot be repaired, they must be replaced completely.

Observe the minimum bending radius of 25 mm when routing fiber optic cables. Fiber optic cables must not be pinched or bent.