奥迪总线CAN-BUS

1、technical service training ex 371 i/vk-5status: 03/01 page 1 a few characteristics of a can bus network very fast data transfer among all participating control units possible. drivetrain bus 500 kbaud, convenience bus 100 kbaud in comparison, isdn - 64 kbit/second however, sections of the can data b

2、us protocol do not contain relevant information. therefore this rule is applicable: 100 kbaud (convenience bus) correspond to 64 kbit isdn. (baud was named after j.m.e baudot) use of common sensors by participating control units simplification of wiring and smaller control units result in space savi

3、ng. if one participant fails, the bus structure remains fully available for all other bus participants. exception: if the engine control unit is faulty, no data can be transferred because the matching resistor of the drivetrain databus is integrated into the control unit. can data bus network (can c

4、ontroller area network) to prevent electromagnetic interference to data transfer, two data bus wires are twisted into a pair. at the same time, radiated interference from the data bus wire is prevented. technical service training ex 371 i/vk-5status: 03/01 page 2 left turn signal right turn signal a

5、4 2001 j 285 m1 m4 m2 m3 j 519 x j 527 convenience can bus e 1 58 d p e 1 e 2 m1 m4m2 m3x j 218 58ri 58 ri 5858le 58 le 58 58 ri 58 le p d p s 58 ss wiring a4 predecessor for example, parking lights maximum 45 wires 9 plugs 60 wiring variations maximum 17 wires 2 plugs 2 wiring variations technical

6、service training ex 371 i/vk-5status: 03/01 page 3 can data bus network participating components drivetrain can bus convenience can bus display can bus technical service training ex 371 i/vk-5status: 03/01 page 4 can data bus network participating components - diagnosis vas 6017 k wire l wire diagno

7、sis system technical service training ex 371 i/vk-5status: 03/01 page 5 central wiring connections a-pillar, left convenience data bus (orange-green) information data bus (orange-violet) drivetrain data bus (orange-black) a-pillar, right j234 g85 j217 j285j104 j220 can data bus network technical ser

8、vice training ex 371 i/vk-5status: 03/01 page 6 can data bus network gateway in dash panel insert control unit for automatic gearbox j217 convenience system central control unit j393 control unit for 4lv j537 diagnosis interface for data bus in dash panel insert j285 control and display unit for air

9、 conditioner/climatronic e87 data telegram the tasks of gateway in dash panel insert include enabling data exchange among the three can bus participants drivetrain convenience and display (infotainment). direct communication among these subsystems is not possible due to the differing transfer speeds

10、. technical service training ex 371 i/vk-5status: 03/01 page 7 multi-function steering wheel control unit - j453 with operating unit - e221 steering column switch module ignition/starter switch - d steering column switch module technical service training ex 371 i/vk-5status: 03/01 page 8 steering co

11、lumn electronics control unit - j527 turn signal, high beam and headlight flasher switch - e2 ccs switch - e45 ignition/starter switch - d windscreen wiper switch - e coil connector with steering angle sender - g85 multi-function steering wheel control unit - j453 with operating unit - e221 steering

12、 column switch module components technical service training ex 371 i/vk-5status: 03/01 page 9 voltage coding wiper switch technical service training ex 371 i/vk-5status: 03/01 page 10 address word -16 steering wheel electronics the multi-function steering wheel control unit is interrogated via steer

13、ing wheel electronics. ! steering column switch module diagnosis convenience system central control unit - j393 communication with the convenience data bus takes place via the central convenience electronics because there is no separate k wire to the vehicle electrical system. therefore, an intact c

14、onvience electronics system is absolutely essential for performing self-diagnosis. k wire technical service training ex 371 i/vk-5status: 03/01 page 11 steering column switch module diagnosis adaptation 10 channel 81 enabling vehicle id number block (using vas 5051) following exchange between vehicl

15、es. new parts will be marked with vehicle id number only when put into service. (with the exception of the gateway) technical service training ex 371 i/vk-5status: 03/01 page 12 the multi-function steering wheel tiptronic operation (both sides) horn operation operation of radio, telephone and speech

16、 operating system (depending on equipment) a b c d e f technical service training ex 371 i/vk-5status: 03/01 page 13 d e f button functions b a c telephonetimcd cassetteradiobutton establish connection accept connection end connection activate/deactivate sos not available with f1 activation of sos a

17、ctivation of sos or load next cd activation of sos or music seach forward activation of sos or station button forward f/f1 reduce hands-free speaking volume reduce volume reduce volume reduce volume reduce volume e raise hands-free speaking volume raise volume raise volume raise volume raise volume

18、d switch between audio mode or not available with c1 switch between phone and radio or previous message switch between phone and radio or previous cd/md switch between phone and radio or music search backward switch between phone and radio or station button backward c/c1 browse index backward (alpha

19、betically) browse messages backward previous trackfast reversesearch backward b browse index forward (alphabetically) browse messages forward next trackfast forwardsearch forward a f1 c1 technical service training ex 371 i/vk-5status: 03/01 page 14 steering wheel functions maximum equipment technica

20、l service training ex 371 i/vk-5status: 03/01 page 15 steering wheel functions basic equipment technical service training ex 371 i/vk-5status: 03/01 page 16 j 519 convenience can bus j 507 e 3 e 1 j 527 j 345 j 59 j 4 j 285 wipe and wash system lighting system voltage supply h2 / h7 vehicle electric

21、al system control unit second wipe overload switch off lane change flash emergency lighting technical service training ex 371 i/vk-5status: 03/01 page 17 vehicle electrical system control unit differentiation - lighting system light control via semi-conductors parking light, right parking light, lef

22、t high beam, right high beam, left turn signal, right turn signal, left number plate light as low line but with more extensive control parking light, front right parking light, front left parking light, rear right parking light, rear left turn signal, front right turn signal, front left turn signal,

23、 rear right turn signal, rear left side turn signal, right side turn signal, left dipped beam, right dipped beam, left main beam, right main beam, left fog light, right fog light, left rear fog light brake light, right brake light, left 3rd brake light number plate light reversing light, right rever

24、sing light, left low line high line technical service training ex 371 i/vk-5status: 03/01 page 18 vehicle electrical system control unit differentiation - lighting system *in the “low line“ versions, components marked with an asterisk are connected to the lighting units via conventional fuses. parki

25、ng light dipped beams* fog lights* rear fog light* parking light main beams headlight flasher vehicle electrical system control unit j519 light control in the “high line” version is communicated via the convenience data bus from the steering column switch module or directly from the rotary light swi

26、tch to the vehicle electrical system control unit. technical service training ex 371 i/vk-5status: 03/01 page 19 address word - 09 electronic central electrical system or vehicle electrical system (high line / low line) low / high line vehicle electrical system control unit diagnosis convenience sys

27、tem central control unit j393 communication with the convenience data bus takes place via the central convenience electronics because there is no separate k wire leading to the vehicle electrical system control unit. therefore, it is absolutely necessary for self-diagnosis that the convenience elect

28、ronics are intact. k wire technical service training ex 371 i/vk-5status: 03/01 page 20 d j453 j527 convenience can information can r94 r99 j526 audi navigation navigation system bns 4.0 (previously navigation iv) further development of navigation system iii spoken information output via radio and display via management information system (mis) dynamic navigation possible (tmc) audi logbook optional equipment e 264 j285 technical service training ex 371 i/vk-5status: 03/01 page 21 au