AUDI A4 2012 – Infotainment MOST bus . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2012 - Digital sound package control unit - Data bus diagnostic interface - Control unit 1 for information electronics - Radio - CD changer - TV tuner - DVD changer

J525	Digital sound package control unit
J533	Data bus diagnostic interface
J794	Control unit 1 for information electronics
R	Radio
R41	CD changer
R78	TV tuner
R161	DVD changer
T2bg	2-pin connector, near glove compartment
T2dg	2-pin connector
T2di	2-pin connector
T2dk	2-pin connector
T2dl	2-pin connector
T2dm	2-pin connector
T2do	2-pin connector
*	According to equipment
*2	Fibre optic cable (FOC)

AUDI A4 2012 Overview of control units in interior of vehicle

Overview of control units in interior of vehicle

♦ Overview also valid for Avant models (5-door)!

   

q	for models without MMI

q	Location and connectors for models with right-hand drive:

6 -	Automatic anti-dazzle interior mirror -Y7- with Rain and light detector sensor -G397-

q

Location:

9 -	Rear right door control unit -J389-

q	Location: in rear right door

12 -	Fuel pump control unit -J538-

q	Location: under rear seat bench

14 -	Active steering control unit -J792-

q	Location and connectors:

q	Location and connectors for models with right-hand drive:

q	Location and connectors for models with right-hand drive:

18 -	Electronic steering column lock control unit -J764-

q	Location: on steering column

19 -	Climatronic control unit -J255-

q	Location and connectors:

20 -	Control unit for information electronics 1 -J794-

q	for models with MMI

q	Location and connectors:

q	for models with MMI:

AUDI A4 2012 Overview of control units in rear part of vehicle - saloon models (4-door) only

Overview of control units in rear part of vehicle - saloon models (4-door) only

q	Connectors:

q	Overview of Avant models (5-door):

q	Overview of Avant models (5-door):

q	Connector:

q	Overview of Avant models (5-door):

q	Overview of Avant models (5-door):

q	Connectors:

q	Overview of Avant models (5-door):

q	Connectors:

q	Overview of Avant models (5-door):

q	Overview of Avant models (5-door):

q	Overview of Avant models (5-door):

q	Overview of Avant models (5-door):

q	Overview of Avant models (5-door):

AUDI A4 2012 Overview of control units in rear part of vehicle - Avant models (5-door) only

Overview of control units in rear part of vehicle - Avant models (5-door) only

q	Connectors:

q	Connector:

q	Connectors:

q	Connectors:

4 -	Digital sound package control unit -J525-

q	Location: in left of luggage compartment, behind side trim.

4 -	Satellite radio -R146-

q	Location: in left of luggage compartment, behind side trim.

4 -	Navigation​ system​ with​ CD​ drive​ control​ unit​ -J401-

q	Location: in left of luggage compartment, behind side trim.

4 -	TV tuner -R78-

q	Location: in left of luggage compartment, behind side trim.

6 -	Voltage stabiliser -J532-

q	Fitting location:

AUDI A4 2012 Control unit for headlight range control J431 / control unit for bend lighting and headlight range control J745 Control unit for headlight range control -J431- / control unit for bend lighting and headlight range control -J745- Location: in front passenger footwell, behind the glove compartment

A -	Control unit for headlight range control -J431- / control unit for bend lighting and headlight range control -J745-

Connector on control unit for headlight range control -J431-:

A1 -	26-pin connector -T26b-

AUDI A4 2012 Fresh air blower control unit J126 Fresh air blower control unit -J126- Location: in front passenger footwell, behind the glove compartment

A -	Fresh air blower control unit -J126-

AUDI A4 2012 Driver door control unit J386

Driver door control unit -J386-

Location door control unit, driver side -J386- for models with left-hand drive:

In driver door.

t	Figure shows left-hand drive model.

t	Figure for right-hand drive models .

   

A -	Driver door control unit -J386-

A2 -	16-pin connector -T16m-

A4 -	6-pin connector -T6am-

.

A -	Driver door control unit -J386-

A1 -	32-pin connector -T32j-

A2 -	16-pin connector -T16m-

A3 -	20-pin connector -T20f-

A4 -	6-pin connector -T6am-

AUDI A4 2012 Front passenger door control unit J387 Front passenger door control unit -J387- Location door control unit, front passenger side -J387- for models with left-hand drive: in front passenger door   Note: t  Figure shows left-hand drive model. t  Figure for right-hand drive models .

A -	Front passenger door control unit -J387-

A2 -	16-pin connector -T16n-

A4 -	6-pin connector -T6ao-

.

A -	Front passenger door control unit -J387-

A1 -	32-pin connector -T32l-

A2 -	16-pin connector -T16n-

A3 -	20-pin connector -T20g-

A4 -	6-pin connector -T6ao-

AUDI A4 2012 Automatic anti-dazzle interior mirror Y7 with Rain and light detector sensor G397 Automatic anti-dazzle interior mirror -Y7- with Rain and light detector sensor -G397- Location: at front of roof side member.

Rain and light detector sensor -G397-

4 -	Main beam assist control unit -J844-

AUDI A4 2012 Sliding​ sunroof​ adjustment​ control​ unit J245 with sliding sunroof motor V1 Sliding​ sunroof​ adjustment​ control​ unit -J245- with sliding sunroof motor -V1- Location: in roof module, on upper front roof frame Connector:

AUDI A4 2012 Onboard supply control unit J519

Onboard supply control unit -J519-

Location onboard supply control unit -J519- for models with left-hand drive:

Driver side dash panel, bottom.

t	Figure shows left-hand drive model.

t	Figure for right-hand drive models .

   

A -	Onboard supply control unit -J519-

A2 -	17-pin connector, brown (connector E) -T17m-

A4 -	6-pin​ connector,​ green​ (connector​ G) -T6f-

A6 -	16-pin connector, brown (connector C) -T16b-

Location onboard supply control unit -J519- for models with right-hand drive:

Driver side dash panel, bottom.

t	Figure​ shows​ right-hand drive​ model.

t	Figure for left-hand drive models .

   

A -	Onboard supply control unit -J519-

A1 -	17-pin connector, black (connector D) -T17l-

A2 -	17-pin connector, brown (connector E) -T17m-

A3 -	17-pin connector, red (connector F) -T17n-

A4 -	6-pin​ connector,​ green​ (connector​ G) -T6f-

A5 -	32-pin connector, grey (connector A) -T32a-

A6 -	16-pin connector, brown (connector C) -T16b-

A7 -	32-pin connector, black (connector B) -T32b-

AUDI A4 2012 Active steering control unit J792 Active steering control unit -J792- Location: Under the carpet in the driver's footwell

4 -	Active steering control unit -J792-

Connectors:

2 -	8-pin connector, black -T8g-

AUDI A4 2012 Radio R (with integrated CD changer R41 / DVD changer R161 )

Radio -R- (with integrated CD changer -R41- / DVD changer -R161-)

Location:

in middle part dash panel.

   

A -

Radio -R-

A1 -	Connector block, consisting of:

t	8-pin connector, brown -T8k-

t	8-pin connector, black -T16l-

t	12-pin connector, green -T12a-

t	12-pin connector, blue -T12s-

1-pin connector, black -T1i- (connection DAB) / 1-pin connector, green -T1k- (connection SDARS)

A4 -	2-pin connector, white -T2df- (AM / FM1 / FM2 connection)

AUDI A4 2012 CD changer R41 / DVD changer R161 CD changer -R41- / DVD changer -R161- Location: In glove compartment.

A -	CD changer -R41- / DVD changer -R161-

A1 -	8-pin connector -T8aa-

A2 -	2-pin connector -T2dm-

AUDI A4 2012 Chip card reader control unit J676 Chip card reader control unit -J676- Location: In glove compartment.   Note: t  Figure​ shows​ right-hand drive​ model. t  for models with Japan navigation system only.

A -	Chip card reader control unit -J676-

AUDI A4 2012 Display unit for front information display and operating unit control unit J685

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

Location:

Dash panel - centre.

Connector -A1- is given as an example for differing equipment versions

   

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

A1 -	Connector for models with MMI High up to August 2009:

t	22-pin connector, black -T22b-

A1 -	Connectors for models with MMI Basic, from September 2009:

t	8-pin connector, black -T8ai-

t	4-pin connector, white -T4ao-

A1 -	Connectors for models with MMI High from September 2009:

t	8-pin connector, black -T8ai-

t	4-pin connector, black -T4an-

A1 -	10-pin connector, red -T10u-

A1 -

AUDI A4 2012 Control unit for information electronics 1 J794

Control unit for information electronics 1 -J794-

Location:

in middle part dash panel.

   

A -	Control unit for information electronics 1 -J794-

A2 -	1-pin connector, blue -T1n-

A3 -

Vacant

A5 -	for models with -J794- basic:

t	4-pin connector, violet -T4al-

A6 -	1-pin connector, green -T1o-

A7 -	Connector block, consisting of:

t	8-pin​ connector,​ brown​ -T8ah-

t	8-pin​ connector,​ black​ -T8ao-

t	12-pin connector, blue -T12x-

t	12-pin connector, green -T12y-

AUDI A4 2012 Multimedia​ system​ operating​ unit​ E380

Multimedia​ system​ operating​ unit​ -E380-

Location:

on centre console.

   

A -	Multimedia​ system​ operating​ unit​ -E380-

AUDI A4 2012 Climatronic control unit J255

Climatronic control unit -J255-

Location:

in middle part dash panel.

   

A -	Climatronic control unit -J255-

A2 -	20-pin connector -T20e-

AUDI A4 2012 Airbag​ control​ unit​ J234 Airbag​ control​ unit​ -J234- Location: Under centre console

A -	Airbag​ control​ unit​ -J234-

AUDI A4 2012 Telephone transmitter and receiver unit R36

Telephone transmitter and receiver unit -R36-

Location:

in front right footwell.

   

A -	Telephone transmitter and receiver unit -R36-

A1 -	Connector -B- (Aerial​ for​ Bluetooth)

AUDI A4 2012 16-pin connector T16 diagnostic connection

16-pin connector -T16- diagnostic connection

Location:

Driver side dash panel, bottom.

   

A -	16-pin connector -T16- diagnostic connection

AUDI A4 2012 Data bus diagnostic interface J533 Data bus diagnostic interface -J533- Location: below the dash panel.

A -	Data bus diagnostic interface -J533-

A2 -	20-pin connector -T20d-

AUDI A4 2012 Control unit in dash panel insert J285 Control unit in dash panel insert -J285- Location: in the dash panel.

A -	Control unit in dash panel insert -J285-

AUDI A4 2012 Control units on right in luggage compartment

Control units on right in luggage compartment

   

Location: 1 -  Convenience system central control unit -J393- Connectors on convenience system central control unit -J393- → Chapter 2 -  Aerial​ amplifier​ for​ mobile​ telephone -R86- 3 -  Electronically controlled damping control unit -J 250- Connector on electronically controlled damping control unit -J250- 4 -  Reversing camera system control unit -J772- 5 -  Trailer detector control unit -J345- Connectors on trailer detector control unit -J345- 6 -  Park assist steering control unit -J791- Connectors on park assist steering control unit -J791- 7 -  Control​ unit​ for​ electromechanical​ parking​ brake -J540-

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Connectors on convenience system central control unit -J393-

2 -	32-pin connector, black (connector B) -T32c-

4 -	32-pin connector, blue (connector F) -T32e-

5 -	6-pin​ connector​ (connector​ G) -not assigned-

7 -	1-pin​ connector,​ grey​ (connector​ D) -T1h-

Connector on electronically controlled damping control unit -J250-

A -	Electronically controlled damping control unit -J 250-

Connector:

Connectors on trailer detector control unit -J345-

A -	Trailer detector control unit -J345-

Connectors:

C -	12-pin connector, red -T12d-

Connectors on Parallel​ Parking​ Assistance​ Control​ Module -J791-

B -	12-pin connector, brown -T12e-

AUDI A4 2012 All-wheel drive control unit J492

All-wheel drive control unit -J492-

.

   

1 -	All-wheel drive control unit -J492-

Location for Avant (5-door) models:

on right wheel housing.

t	Figure shows Avant (5-door) model.

t	Figure for saloon (4-door) model .

   

1 -	All-wheel drive control unit -J492-

2 -	47-pin connector -T47b-

AUDI A4 2012 Voltage stabiliser J532 Voltage stabiliser -J532- Location: In spare wheel recess, on left next to battery.

1 -	Voltage stabiliser -J532-

AUDI A4 2012 Battery​ monitor​ control​ unit​ J367

Battery​ monitor​ control​ unit​ -J367-

Location:

at negative terminal of battery -A-.

   

3 -	2-pin connector -T2x-