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1、312Service.For internal use onlyAll rights reserved. Subject to technical modification. AUDI AG I/VK-35 D-85045 Ingolstadt Fax 0841/89-36367A03.5S00.03.20 Technical status 02/03 Printed in GermanyAudi A3 04 Electrical SystemSelf Study Programme 312Vorsprung durch Technik www.audi.deThe Audi A3 04 ca
2、n boast a whole range of details which used to be the sole domain of the more luxurious classes. Such features include new pre-fitted components for mobile phone installation with voice control, thus allowing drivers to keep both hands on the wheel. A new dimension in telephone quality for this clas
3、s of vehicle is achieved by way of echo compensation and speed-dependent volume control (GALA).Even the basic sound system offers a centre loudspeaker in the middle of the dash panel to enhance the acoustic effect and natural sound reproduction.This sound quality can be improved still further with t
4、he BOSE sound system, featuring 6-channel actuation and a total output of 222 W.The Audi A3 04, top quality equipment features - now available for the compact class as wellThe standard of control unit networking has also been raised to that of the mid-range category. The number of interlinked contro
5、l units is more than twice that of the Audi A3 97, thus equipping the compact class with a whole range of top quality functions.3ContentsPageAttention NoteNew NoteThe Self Study Programme contains information on design features and functions. The Self Study Programme is not intended as a Workshop Ma
6、nual. Values given are only intended to help explain the subject matter and relate to the software version applicable when the SSP was compiled.Use should always be made of the latest technical publications when performing maintenance and repair work.Control Units Exploded view of control unit fitti
7、ng locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 BUS topology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Data bus diagnostic interface J533 (gateway) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8、. .8 Onboard power supply control unit J519 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Convenience system central control unit J393 . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Interior monitor (IM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9、 . . . . . . . . . . . . . . . . . .21 Anti-theft alarm (ATA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Alarm horn H12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Anti-theft/ti
10、lt system control unit J529. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Door control units J386 and J387 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Parking aid control unit J446 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11、. . . . . . . . . . . . . .29 Steering column electronics control unit J527 . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Trailer detector control unit J345 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Control unit with display in dash panel insert J285
12、 . . . . . . . . . . . . . . . . . . . . . . . .36 Radio controlled clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42Distributed Functions Hazard warning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、 . . . .45 Left turn signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 Triggering of anti-theft alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48Infotainment General outline of infotainment
14、 system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 Sound systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 Radios and CD changer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、. . . . . . . . .54 Aerial system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 Pre-fitted components for mobile phone installation. . . . . . . . . . . . . . . . . . . . . . .56 Navigation system 4 . . . . . . . . . . . . . . . . .
16、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58Passenger Protection Safety systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 Airbag control unit J234 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62 Front airbag crash sensors G283, G284 (upfront sensors) . . . . . . . . . . . . . . . . . . .63 Airbag warning lamp K75. . . .
