Communication System, From 1 June 2009
Communication System, from 1 June 2009
The MMI from 1 September 2008 an advancement of the MMI currently in use. The cell phone preparation, AMI (Audi Music Interface, CD and DVD drives, navigation (with hard disc drive) and SDS are integrated all together in one unit information electronics control module 1 (J794).
The MOST bus connects the radio (R), the CD changer (R41) and the digital sound system control module (J525). The basis sound systems are controlled directly by the radio (R). SDARS is optionally integrated in the radio (R).
MMI Maximum Equipment
• The information electronics control module 1 in the glove compartment holds the CD player/DVD player/navigation system/voice control system/SD memory card reader.
• internal hard drive disc storage (HD) for storing navigation data and MP3 files
• Multimedia Control Head (E380) in lower center console
• Front Information Display Control Head (J685) in center instrument panel
• The CD changer/optional external audio source connection (R199) (interface) in the glove compartment
• Digital Sound System Control Module in the luggage compartment (left rear)
• Sound system: Standard/BOSE/Bang and Olufsen
• Radio in left rear of luggage compartment
• TV Tuner (R78) on the left side of the luggage compartment in the rear
• Optional cell phone preparation
• Optional Bluetooth hands-free equipment
• Optional multifunction steering wheel
The MOST BUS performs the system data exchange in the MMI.
The connection to the other BUS systems in the vehicle are provided by the data bus on board diagnostic interface.
Fault finding is performed via "Guided Fault Finding" using the Vehicle Diagnosis, Testing and Information System (VAS5051).
Information Electronics Control Module 1 (J794) MMI Overview
The Information Electronics Control Module 1 is a 3rd generation MMI. Depending on the equipment level, the Information Electronics Control Module 1 contains the following known control modules from the 2nd generation:
1 Front Information Display Control Head Control Module (J523)
2 CD Player (R89)
3 Navigation System with CD Drive Control Module (J401)
4 Card Reader (Telephone) (R115)/SD Memory Card Reader
5 Speech Input Control Module (J507)
6 Bluetooth Hands-Free Equipment
7 Telephone Transceiver (R36) (Cell Phone Preparation)
8 Internal Hard Drive Disc Storage (HD)
9 Information Electronics Control Module 1 (J794)
Radio (R) MMI overview
Depending on the equipment level, the radio contain the following known control modules from the 2nd generation:
1 Digital Sound System Control Module (J525)
2 Radio (R)
3 Radio (R) AM/FM Tuner
4 Satellite Radio (R146)
5 Not Installed
MOST Bus MMI
1 Front Information Display Control Head (J685)
2 Information Electronics Control Module 1 (J794)
3 MOST Bus
4 CD Changer (R41)
5 Not Installed
6 Radio (R)
7 Digital Sound System Control Module (J525)
8 Data Bus On Board Diagnostic Interface (J533)
9 Multimedia Control Head (E380)
Notes on MOST Bus
In addition to the CAN bus systems, the optical data bus system MOST bus is used.
A fiber optic cable is utilized as the connecting cable. Fiber optic cables are routed inside corrugated tubes for protection.
Replace complete fiber optic cable if possible.
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).
Observe the minimum bending radius of 25 mm when routing fiber optic cables. Fiber optic cables must not be pinched or bent.
Additional information Self Study Program No. 286, New Data Bus Systems - LIN, MOST Bluetooth.