audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Overview of MMI Navigation system plus > < MMI infotainment system (Japan)
General notes
General notes
The following versions of the MMI infotainment system are available:
MMI Navigation system plus
t  Control unit 1 for information electronics -J794- in dash panel contains DVD player / SD memory card readers / navigation system
t  Internal hard disk (HD) to store navigation data and MP3 files
t  Integrated operating unit
t  Display unit for front information display and operating unit control unit -J685- (display) in dash panel (centre), manually foldable
t  Connection for external audio sources -R199- (AUX IN socket) in centre console storage compartment
t  Radio -R- in luggage compartment (rear left)
t  Chip card reader control unit -J676- (toll) in glove box
t  Sound systems: Standard/BOSE
Optional features
t  CD changer -R41- in glove box
t  Digital sound package control unit -J525- (BOSE sound system) in luggage compartment (rear left)
t  Bluetooth hands-free system
t  Multi-function steering wheel
t  Connection for external audio sources -R199- (interface) in glove box
t  TV tuner -R78- in luggage compartment (rear left)
t  Wireless LAN (internet access control unit -J666-) in glove box
The exchange of data in the MMI systems takes place via the MOST bus.
The connection to other data bus systems in the vehicle is handled by the data bus diagnostic interface -J533-.
Fault finding is performed via the „Guided Fault Finding“ → Vehicle diagnostic tester.
Notes on MOST bus
In addition to the CAN bus, the fibre optic data bus „MOST bus“ is used.
A „fibre optic cable“ is used as the connecting cable. The fibre optic cables are fitted in corrugated tubes for protection.
Renew the complete fibre optic cable whenever possible.
The end faces of the connectors must not become dirty.
   
If connectors are unplugged: fit a protective cap for cable connector -VAS 6223/9-.
When installing the fibre optic cables, be sure to observe the minimum bending radius of 25 mm. Do not crush or kink the fibre optic cables.
Repairing fibre optic cables → Electrical system; General information; Rep. gr.97.
  W00-10202

Overview of MMI Navigation system plus > < MMI infotainment system (Japan)