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Overview - Sound System

Vehicles with Eight Speakers 

On vehicles with 8 speakers the sound system is comprised of the following components:

Vehicles with Sound System 

The sound system consists of the following components:

For data exchange between the Information Electronics Control Module 1 -J794- and the Digital Sound System Control Module -J525- the MOST bus is used.

Notes on MOST bus

The optical data bus "MOST bus" is used in addition to the CAN bus.

A fiber-optic cable is used as a "connecting cable". Fiber optic cables are routed inside corrugated tubes for protection.

Replace the complete fiber-optic cable if possible.

The front surface of the connectors must not be contaminated.

If disconnecting the connectors: Attach the :VAS6223/9  .

Fig 1: Fiber-Optic Conductor Repair Set VAS 6223A
GWWW00-11495Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

When routing fiber-optic cables, make sure not to go below the minimum bending radius of 25 mm. Do not crush or kink the fiber-optic cables.

Repairing fiber-optic cables. Refer to GENERAL REPAIR INFORMATION .