AUDI A8 2004 — Infotainment data bus (Most-Ring) . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A8 2004 - Infotainment data bus

J523	Front information display and operating unit control unit
J525	Digital sound package control unit
J526	Telephone and telematics control unit
J533	Data bus diagnostic interface
R36	Telephone transmitter and receiver unit
*	models with telephone
**	models with telematics
#	modesl without radio BOSE
##	modesl with radio BOSE
♦	fibre optic conductor

Wiring Diagram AUDI A8 2004 - Infotainment data bus

J401	Navigation system with CD drive control unit
R	Radio
R78	TV tuner
R118	Media player in position 1
R119	Media player in position 2
R146	Satellite-radio
R147	Digital radio
*	from model year 2004, USA
♦	fibre optic conductor

AUDI A8 2004 Control units overview

Control units overview    

1 -	Front information display and operating unit control unit -J523-

q	Location → chapter

2 -	Display unit for front information display and operating unit control unit -J685-

q	Location → chapter

3 -	Steering column electronics control unit -J527-

q	Location → chapter

4 -	Front passenger side door control unit -J387-

q	Location → chapter

q	Connector assignment → chapter

4 -	Power latching control unit for front passenger door -J761-

q	Connector assignment → chapter

5 -	Onboard supply control unit 2 -J520-

q	Location → chapter

q	Connector assignment → chapter

6 -	Roof electronics control unit -J528-

q	In front roof module

q	Location → chapter

Audi A8	Fitting Locations	No.  804 / 2

7 -	Airbag control unit -J234-

q	Location → chapter

q	Connector assignment → chapter

8 -	Seat and steering column adjustment control unit with memory -J136-

q	Location → chapter

q	Connector assignment → chapter

9 -	Entry and start authorisation control unit -J518-

q	Location → chapter

q	Connector assignment → chapter

10 -	Driver door control unit -J386-

q	Location → chapter

q	Connector assignment → chapter

10 -	Power latching control unit for driver door -J760-

q	Connector assignment → chapter

11 -	Onboard power supply control unit -J519-

q	Location → chapter

q	Connector assignment → chapter

12 -	Headlight range control, control unit -J431-

q	Location → chapter

q	Connector assignment → chapter

13 -	ABS control unit -J104-

q	Connector assignment → chapter

Audi A8	Fitting Locations	No.  804 / 3

14 -	Control unit in dash panel insert -J285-

q	Connector assignment → chapter

15 -	Wiper motor control unit -J400-

q	Location → chapter

16 -	Automatic gearbox control unit -J217-

q	Connector assignment, 16-pin connector -T16c- → chapter

q	Connector assignment, 20-pin connector -T20e- → chapter

17 -	Data bus diagnostic interface -J533-

q	Behind the glove box

q	Location → chapter

17 -	Adaptive suspension control unit -J197-

q	Behind the glove box

q	Location → chapter

q	Connector assignment → chapter

18 -	Adaptive cruise control unit -J428-

q	Location → chapter

q	Connector assignment → chapter

19 -	Engine control unit -J623-, engine control unit 2 -J624-

q	Location → chapter

-	Garage door operation control unit -J530-

q	Location → chapter

Audi A8	Fitting Locations	No.  804 / 4

Front information display and operating unit control unit -J523-

Location: Behind the glove box -Item 1- 1 -  Front information display and operating unit control unit -J523- 2 -  Data bus diagnostic interface -J533- 3 -  Adaptive suspension control unit -J197- Display unit for front information display and operating unit control unit -J685-

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Location: In centre dash panel -Item 1-

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Audi A8	Fitting Locations	No.  804 / 5

Steering column electronics control unit -J527-

Location: Near steering column, behind steering wheel Driver side door control unit -J386-, front passenger door control unit -J387-

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Location -J386-: In driver door -arrow- Location -J387-: In front passenger door -arrow-

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Audi A8	Fitting Locations	No.  804 / 6

Connector assignment:

Pin connector front door:

A -	32-pin connector (connector A), white

B -	16-pin connector (connector B), brown

C -	12-pin connector (connector C), black

D -	10-pin connector, black (connector D), black

Pin connector rear door:

A -

Vacant

B -	16-pin connector (connector A), brown

C -	12-pin connector (connector B), black

D -	10-pin connector (connector C), black

Audi A8	Fitting Locations	No.  804 / 7

Power latching control unit for driver door -J760-, power latching control unit for front passenger door -J761-

6-pin connector, black

Audi A8	Fitting Locations	No.  804 / 8

AUDI A8 2004 Onboard supply control unit 2 -J520- Onboard supply control unit 2 -J520-

Location: Under carpet of the front passenger seat -arrow-

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Audi A8	Fitting Locations	No.  804 / 9

Connector assignment:

A -	40-pin connector, on control unit

B -	40-pin connector, black, on wiring harness

Audi A8	Fitting Locations	No.  804 / 10

Roof electronics control unit -J528-

Location: The roof electronics control unit -J528- in front roof module contains: 1 -  Interior monitor send and receive module 1 -G303- 2 -  Garage door operating unit -E284- 3 -  Telematics operating unit -E264- 1, 4, 5 -  Microphone unit in front roof module -R164- 4 -  Interior monitor send and receive module 2 -G305-

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Audi A8	Fitting Locations	No.  804 / 11

Airbag control unit -J234-

Location: On the front centre tunnel -Item 1-

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Audi A8	Fitting Locations	No.  804 / 12

Connector assignment:

-	Airbag control unit -J234-

Connector:

A -	84-pin connector, yellow

q	up to model year 2004

-	75-pin connector, yellow

q	up to model year 2005

Audi A8	Fitting Locations	No.  804 / 13

Seat and steering column adjustment control unit with memory -J136-

Location: In lower driver seat -Item 2-, coupling station driver seat -Item 1-

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Audi A8	Fitting Locations	No.  804 / 14

Connector assignment:

A -	12-pin connector -connector ST5-, black

B -	12-pin connector -connector ST4-, black

C -	32-pin connector -connector ST6-, blue

D -	32-pin connector -connector ST7-, green

Audi A8	Fitting Locations	No.  804 / 15

Entry and start authorisation control unit -J518-

Location left-hand drive: Under carpet of the driver seat -arrow- Location right-hand drive: Under carpet of the front passenger seat -arrow-.

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Audi A8	Fitting Locations	No.  804 / 16

Connector assignment:

A -	81-pin connector -connector A-, black

B -	6-pin connector -connector B-, black

Audi A8	Fitting Locations	No.  804 / 17

Onboard power supply control unit -J519-

Location: Behind the shelf on the driver's side, on relay and fuse holder behind the dash panel, left -arrow-

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Audi A8	Fitting Locations	No.  804 / 18

Connector assignment:

A -	32-pin connector, -T32a- (connector C), grey

B -	23-pin connector -T23- (connector B), black

C -	10-pin connector, -T10p- (connector A), black

Audi A8	Fitting Locations	No.  804 / 19

Headlight range control, control unit -J431-

Location: Behind dash panel insert

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Audi A8	Fitting Locations	No.  804 / 20

Connector assignment:

A -	26-pin connector, yellow

Audi A8	Fitting Locations	No.  804 / 21

ABS control unit -J104-

Connector assignment:

A -	42-pin connector, black

Audi A8	Fitting Locations	No.  804 / 22

Control unit in dash panel insert -J285-

Connector assignment:

A -	32 pin connector -T32-, blue

Audi A8	Fitting Locations	No.  804 / 23

Wiper motor control unit -J400-

Location: In plenum chamber on windscreen wiper motor -arrow-

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Audi A8	Fitting Locations	No.  804 / 24

Automatic gearbox control unit -J217-, gearbox 09E/09L

Connector assignment:

A -	16-pin connector -T16c-, black

Audi A8	Fitting Locations	No.  804 / 25

Automatic gearbox control unit -J217-, gearbox 01J/01T

Connector assignment:

A -	20-pin connector -T20e-, black

Audi A8	Fitting Locations	No.  804 / 26

Data bus diagnostic interface -J533-

Location: Behind the glove box -Item 2- 1 -  Front information display and operating unit control unit -J523- 2 -  Data bus diagnostic interface -J533- 3 -  Adaptive suspension control unit -J197- Adaptive suspension control unit -J197-

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Location: Behind the glove box -Item 3- 1 -  Front information display and operating unit control unit -J523- 2 -  Data bus diagnostic interface -J533- 3 -  Adaptive suspension control unit -J197-

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Audi A8	Fitting Locations	No.  804 / 27

Connector assignment:

A -	81-pin connector (connector A), black

B -	40-pin connector (connector B), black

Audi A8	Fitting Locations	No.  804 / 28

AUDI A8 2004 Engine control unit -J623-, engine control unit 2 -J624- Engine control unit -J623-, engine control unit 2 -J624-

Location: Engine control unit -1- with electronics box -2- in plenum chamber Engine control unit2 -J624-, installed under or next to engine control unit -J623-, depending on equipment Adaptive cruise control unit -J428-

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Location: Behind the front bumper, lower

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Audi A8	Fitting Locations	No.  804 / 29

Connector assignment:

A -	12-pin connector, black

Audi A8	Fitting Locations	No.  804 / 30

Garage door operation control unit -J530- Location: Behind the front bumper, left

1 -	4-pin connector, black -T4bi-

2 -	Garage door operation control unit -J530-

3 -

Screw

AUDI A8 2004 Control units overview

Control units overview    

1 -	Anti-theft and tilt system control unit -J529-

q	Location → page 805/4

2 -	Rear right door control unit -J389-

q	Location → page 805/4

q	Connector assigment → page 805/5

2 -	Power latching control unit for rear right door -J763-

q	Connector assigment → page 805/6

3 -	Rear seat adjustment with memory control unit -J522-, heated rear left seat control unit -J215-, heated rear right seat control unit -J216-

q	Under rear seat bench, central

q	Location → page 805/7

4 -	Energy management control unit -J644-, convenience system central control unit -J393-

q	on right in luggage compartment

q	Location → page 805/7

q	Connector assigment -J393- → page 805/9

q	Connector assigment -J644- → page 805/8

Audi A8	Fitting Locations	No.  805 / 2

5 -	Heated windscreen control unit -J505-, electric park and handbrake control unit -J540-, trailer detector control unit -J345-

q	Under the battery

q	Location → page 805/10

q	Connector assigment -J345- → page 805/11

q	Connector assigment -J505- → page 805/12

q	Connector assigment -J540- → page 805/13

6 -	Aerial selection control unit -J515-

q	Behind the roof end trim, rear left

q	Location → page 805/14

7 -	Digital sound package control unit -J525-

q	on left in luggage compartment

q	Location → page 805/14

7 -	TV tuner -R78-

q	on left in luggage compartment

q	Location → page 805/14

Audi A8	Fitting Locations	No.  805 / 3

7 -	Navigation system with CD drive control unit -J401-

q	on left in luggage compartment

q	Location → page 805/14

7 -	Parking aid control unit -J446-

q	on left in luggage compartment

q	Location → page 805/14

q	Connector assigment → page 805/15

7 -	Radio -R- and speech input control unit -J507-

q	on left in luggage compartment

q	Location → page 805/14

7 -	Digital radio -R147-

q	on left in luggage compartment

q	Location → page 805/14

8 -	Radio controlled clock receiver -J489-

q	Location → page 805/16

9 -	Tyre pressure monitor control unit -J502-

q	Location → page 805/16

q	Connector assigment → page 805/17

10 -	Rear left door control unit -J388-

q	Location → page 805/4

q	Connector assigment → page 805/5

10 -	Power latching control unit for rear left door -J762-

q	Connector assigment → page 805/6

Audi A8	Fitting Locations	No.  805 / 4

Anti-theft and tilt system control unit -J529-

Location: Under rear seat bench, right Rear right door control unit -J389- and rear left door control unit -J388-

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Location -J389-: In rear right door -arrow- Location -J388-: In rear left door -arrow-

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Audi A8	Fitting Locations	No.  805 / 5

Connector assigment:

Connector front door:

A -	32-pin connector (connector A), white

B -	16-pin connector (connector B), brown

C -	12-pin connector (connector C), black

D -	10-pin connector, black (connector D), black

Connector rear door:

A -

Vacant

B -	16-pin connector (connector A), brown

C -	12-pin connector (connector B), black

D -	10-pin connector (connector C), black

Audi A8	Fitting Locations	No.  805 / 6

Power latching control unit for rear right door -J763- and power latching control unit for rear left door -J762-

Connector assigment:

-	6-pin connector, black

Audi A8	Fitting Locations	No.  805 / 7

Rear seat adjustment with memory control unit -J522-, heated rear left seat control unit -J215- and heated rear right seat control unit -J216-

Location: Under rear seat bench, central 1 -  Rear seat adjustment with memory control unit -J522- 2 -  Heated rear left seat control unit -J215-  -  Heated rear right seat control unit -J216- Energy management control unit -J644- and convenience system central control unit -J393-

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Location: on right in luggage compartment 2 -  Energy management control unit -J644- 6 -  Convenience system central control unit -J393-

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Audi A8	Fitting Locations	No.  805 / 8

Connector assigment of energy management control unit -J644-:

A -	14-pin connector, black

Audi A8	Fitting Locations	No.  805 / 9

Connector assigment of convenience system central control unit -J393-:

A -	15-pin connector -connector A-, black

B -	10-pin connector -connector C-, black

C -	32-pin connector -connector B-, grey

Audi A8	Fitting Locations	No.  805 / 10

Heated windscreen control unit -J505-, electric park and handbrake control unit -J540- and trailer detector control unit -J345-

Location: Under the battery 1 -  Heated windscreen control unit -J505- 2 -  Electric park and handbrake control unit -J540- 3 -  Trailer detector control unit -J345-

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Audi A8	Fitting Locations	No.  805 / 11

Connector assigment of trailer detector control unit -J345-:

A -	16-pin connector -T16f-, black

B -	12-pin connector -T12m-, red

Audi A8	Fitting Locations	No.  805 / 12

Connector assigment of heated windscreen control unit -J505-:

A -	4-pin connector, black

Audi A8	Fitting Locations	No.  805 / 13

Connector assigment of electric park and handbrake control unit -J540-:

A -	30-pin connector, black

Audi A8	Fitting Locations	No.  805 / 14

AUDI A8 2004 Aerial selection control unit -J515- Aerial selection control unit -J515-

Location: Behind the roof end trim, rear left -Item 3- Digital sound package control unit -J525-, TV tuner -R78-, navigation system with CD drive control unit -J401-, parking aid control unit -J446-, radio -R-, speech input control unit -J507- and digital radio -R147-

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Location: In left luggage compartment 1 -  Digital sound package control unit -J525- 2 -  TV tuner -R78- 3 -  Navigation system with CD drive control unit -J401- 4 -  Parking aid control unit -J446- 5 -  Radio -R- and speech input control unit -J507- 6 -  Digital radio -R147-

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Audi A8	Fitting Locations	No.  805 / 15

Connector assigment:

-	Parking aid control unit -J446-

Pin connector:

A -	16-pin connector, brown

B -	12-pin connector, brown

C -	12-pin connector, black

Audi A8	Fitting Locations	No.  805 / 16

Radio controlled clock receiver -J489-

Location: In rear bumper -Item 2- Tyre pressure monitor control unit -J502-

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Location: Under rear seat bench, left

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Audi A8	Fitting Locations	No.  805 / 17

Connector assigment:

A -	32-pin connector, black