AUDI A4 2005 — Airbags for driver and front passenger with belt tensioners and side airbags . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2005 - Airbag igniters for driver side and front passenger side - belt tensioners

D	Ignition/starter switch
F138	Airbag coil connector/return spring with slip ring
J234	Airbag control unit
N95	Driver side airbag igniter
N131	Front passenger side airbag igniter 1
N153	Driver seat belt tensioner igniter 1
N154	Front passenger seat belt tensioner igniter 2
T2a	2-pin connector, yellow-blue, interior on driver seat
T2b	2-pin connector, yellow-blue, interior on front passenger seat
T2q	2-pin connector, purple, interior on driver seat
T2r	2-pin connector, purple, interior on front passenger seat
T4e	4-pin connector, yellow, on steering column electronics control unit
T4f	4-pin connector, yellow, interior, near glove compartment
109	Earth connection, in airbag wiring harness
312	Earth connection 2, in airbag wiring harness
637	Earth point, airbag control unit
A2	Positive connection (15), in dash panel wiring harness
*	Depends on equipment
	Short circuit bridge becomes effective when connector is unplugged

Wiring Diagram AUDI A4 2005 - Curtain airbag igniter

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J234	Airbag control unit
N251	Driver side curtain airbag igniter
N252	Front passenger side curtain airbag igniter
T2l	2-pin connector, yellow-blue, connector point interior, in front left roof area
T2m	2-pin connector, yellow-blue, connector point interior, in front right roof area
T2w	2-pin connector, purple, connector point interior, in front left roof area
T2x	2-pin connector, purple, connector point interior, in front right roof area
T4g	4-pin connector, yellow, connector point interior, in front left roof area
T4h	4-pin connector, yellow, connector point interior, in front right roof area
249	Earth connection 2, in interior wiring harness
277	Earth connection 3, in interior wiring harness
*	For models with curtain airbag (saloon models) only
**	For models with curtain airbag (Avant models) only
***	Depends on equipment
	Short circuit bridge becomes effective when connector is unplugged

Wiring Diagram AUDI A4 2005 - Key operated switch to deactivate front passenger side airbag

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E26	Glove compartment light switch
E224	Key operated switch to deactivate front passenger side airbag
J234	Airbag control unit
J393	Convenience system central control unit
K145	Front passenger side airbag deactivated warning lamp
T12d	12-pin connector, brown, glove box
T12h	12-pin connector, black, on convenience system central control unit
T17f	17-pin connector, orange, coupling station on left of A-pillar
W	Front interior light
W6	Glove compartment light
109	Earth connection, in airbag wiring harness
238	Earth connection 1, in interior wiring harness
B250	Positive connection in roof wiring harness
*	For models with key operated switch to deactivate airbag only
**	Applicable up to October 2003
***	Applicable from November 2003

Wiring Diagram AUDI A4 2005 - Side airbag igniter on driver side and on front passenger side - side airbag crash sensor

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G179	Side airbag crash sensor on driver side
G180	Side airbag crash sensor on front passenger side
J234	Airbag control unit
J393	Convenience system central control unit
J526	Telephone and telematics control unit
N199	Side airbag igniter on driver side
N200	Side airbag igniter on front passenger side
T3c	3-pin connector, yellow, interior near driver seat
T3d	3-pin connector, yellow, interior near front passenger seat
T12i	12-pin connector, black, on convenience system central control unit (used to be connector 3)
T17d	17-pin connector, red, coupling station on electronics box, plenum chamber
109	Earth connection, in airbag wiring harness
312	Earth connection 2, in airbag wiring harness
A125	Connection (crash signal), in dash panel wiring harness
*	⇒ Applicable engine Current Flow Diagram
**	For models with seat adjustment, ⇒ applicable Current Flow Diagram
***	⇒ Applicable Current Flow Diagram: telematics
	Short circuit bridge becomes effective when connector is unplugged

Wiring Diagram AUDI A4 2005 - Rear side airbag igniter on driver side and on front passenger side - rear side airbag crash sensor

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G256	Rear side airbag crash sensor on driver side
G257	Rear side airbag crash sensor on front passenger side
J234	Airbag control unit
N201	Rear side airbag igniter on driver side
N202	Rear side airbag igniter on front passenger side
T4i	4-pin connector, yellow, connector point interior, rear left
T4j	4-pin connector, yellow, connector point interior, rear right
109	Earth connection, in airbag wiring harness
312	Earth connection 2, in airbag wiring harness
	Short circuit bridge becomes effective when connector is unplugged

Wiring Diagram AUDI A4 2005 - Belt switch - rear belt tensioner

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E24	Driver side belt switch
E25	Front passenger side belt switch
F140	Front left belt switch
F141	Front right belt switch
J234	Airbag control unit
N196	Rear belt tensioner igniter on driver side
N197	Rear belt tensioner igniter on front passenger side
N198	Rear centre belt tensioner igniter
T8b	8-pin connector, black, driver side belt switch
T8c	8-pin connector, black, front passenger side belt switch
109	Earth connection, in airbag wiring harness
277	Earth connection 3, in interior wiring harness
*	For models with belt switch only
**	For models with rear belt tensioner only
***	For models with seat belt warning only

Wiring Diagram AUDI A4 2005 - Control unit with display in dash panel insert - front airbag crash sensor

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G283	Front airbag crash sensor for driver side
G284	Front airbag crash sensor for front passenger side
J234	Airbag control unit
J285	Control unit with display in dash panel insert
K75	Airbag warning lamp
T16	16-pin connector, black, diagnostic connector
T17a	17-pin connector, red, coupling station on left A-pillar
T17c	17-pin connector, red, coupling station right A-pillar
T32a	32-pin connector, green, on dash panel insert
109	Earth connection, in airbag wiring harness
A76	Connection (diagnosis wire K), in dash panel wiring harness
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness
•	Data bus wire (CAN bus)

AUDI A4 2005 Control units overview

Control units overview

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1 -	Heated windscreen control unit -J505-

q	Location → page 804/4

2 -	CD changer -R41-

q	Location → page 804/13

3 -	Fresh air blower control unit -J126-

q	Location ⇒ page → 804/7

4 -	Headlight range control, control unit -J431-

q	Location → page 804/7

5 -

Radio -R-

q	not for navigation system

q	Location → page 804/11

5 -	Navigation operating electronics control unit -J402-

q	for navigation system RNS-D only

q	Location → page 804/11

5 -	Control unit with display for radio and navigation system -J503-

q	for navigation system RNS-Low only

q	Location → page 804/13

Audi A4	Fitting Locations	No. 804 / 2

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

q	Location for navigation system NS-Low → page 804/12

q	Location for navigation system RNS-E → page 804/12

6 -	Telephone and telematics control unit, telematics -J526-

q	Location → page 804/14

6 -	Language input control unit -J507-

q	Location → page 804/14

7 -	Steering column electronics control unit -J527-

q	Location → page 804/8

8 -	Front passenger side door control unit -J387-

q	Location → page 804/16

9 -	Display control unit in dash panel insert -J285-

q	Location → page 804/8

10 -	Airbag control unit -J234-

q	Location → page 804/9

11 -	Driver door control unit -J386-

q	Location → page 804/16

Audi A4	Fitting Locations	No. 804 / 3

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12 -	Convenience system central control unit -J393-

q	Location → page 804/15

13 -	Onboard power supply control unit -J519-

q	Location → page 804/9

14 -	Motronic control unit -J220-

14 -	Diesel direct injection system control unit -J248-

14 -	Simos control unit -J361-

q	Location → page 804/4

15 -	Automatic gearbox control unit -J217-

q	not for models with multitronic®

q	Location → page 804/5

16 -	ABS control unit -J104-

q	Location → page 804/6

17 -	Automatic gearbox control unit -J217-

q	for models with multitronic® only

q	Location → page 804/5

18 -	Radiator fan control unit -J293-

q	Location → page 804/6

Audi A4	Fitting Locations	No. 804 / 4

Heated windscreen control unit -J505-

Location:

On right in plenum chamber, next to battery

AUDI A4 2005 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-

Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-

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Location:

On electronics box in plenum chamber

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Audi A4	Fitting Locations	No. 804 / 5

AUDI A4 2005 Automatic gearbox control unit -J217-

Automatic gearbox control unit -J217-

not for models with multitronic®

Location:

AUDI A4 2005 Automatic gearbox control unit -J217-

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In electronics box in plenum chamber

for models with multitronic® only

Location:

In gearbox

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Audi A4	Fitting Locations	No. 804 / 6

AUDI A4 2005 ABS control unit -J104-

ABS control unit -J104-

Location:

In engine compartment, on front left hydraulic unit

AUDI A4 2005 Radiator fan control unit -J293-

Radiator fan control unit -J293-

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Location:

on radiator fan

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Audi A4	Fitting Locations	No. 804 / 7

AUDI A4 2005 Fresh air blower control unit -J126-

Fresh air blower control unit -J126-

Location:

Behind the glove box, in fresh air blower

AUDI A4 2005 Headlight range control, control unit -J431-

Headlight range control, control unit -J431-

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Location:

Behind the glove box

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Audi A4	Fitting Locations	No. 804 / 8

AUDI A4 2005 Steering column electronics control unit -J527-

Steering column electronics control unit -J527-

Location:

On steering column

AUDI A4 2005 Display control unit in dash panel insert -J285-

Display control unit in dash panel insert -J285-

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Location:

In the dash panel behind the display unit

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Audi A4	Fitting Locations	No. 804 / 9

AUDI A4 2005 Airbag control unit -J234-

Airbag control unit -J234-

Location:

On centre tunnel, under handbrake lever

AUDI A4 2005 Onboard power supply control unit -J519-

Onboard power supply control unit -J519-

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Location:

Behind driver's storage compartment

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Audi A4	Fitting Locations	No. 804 / 10

AUDI A4 2005 Trailer detector control unit -J345-

Trailer detector control unit -J345-

Location:

In left luggage compartment, behind side trim

AUDI A4 2005 Parking aid control unit -J446-

Parking aid control unit -J446-

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Location:

In left luggage compartment, behind side trim, on apron

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Audi A4	Fitting Locations	No. 804 / 11

AUDI A4 2005 Navigation operating electronics control unit -J402-

Navigation operating electronics control unit -J402-

for navigation system RNS-D only

Location:

in centre console

AUDI A4 2005 Navigation operating electronics control unit -J402-

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AUDI A4 2005 Radio -R-

Radio -R-

not for navigation system

Location:

in centre console

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Audi A4	Fitting Locations	No. 804 / 12

AUDI A4 2005 Navigation system with CD drive control unit -J401-

Navigation system with CD drive control unit -J401-

For navigation system NS-Low only

Location:

AUDI A4 2005 Navigation system with CD drive control unit -J401-

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in centre console

For navigation system RNS-E only

Location:

in centre console

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Audi A4	Fitting Locations	No. 804 / 13

AUDI A4 2005 Control unit with display for radio and navigation system -J503-

Control unit with display for radio and navigation system -J503-

for navigation system RNS-Low only

Location:

in centre console

AUDI A4 2005 CD changer -R41-

CD changer -R41-

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Location:

In glove compartment

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Audi A4	Fitting Locations	No. 804 / 14

AUDI A4 2005 Telephone and telematics control unit, telematics -J526-

Telephone and telematics control unit, telematics -J526-

For models with telematics only

Location:

in electronics box under front passenger seat

AUDI A4 2005 Telephone and telematics control unit, telematics -J526-

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AUDI A4 2005 Language input control unit -J507-

Language input control unit -J507-

For models with telematics only

Location:

in electronics box under front passenger seat

AUDI A4 2005 Language input control unit -J507-

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Audi A4	Fitting Locations	No. 804 / 15

AUDI A4 2005 Convenience system central control unit -J393-

Convenience system central control unit -J393-

Location:

on sill, front left

AUDI A4 2005 Convenience system central control unit -J393-

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Audi A4	Fitting Locations	No. 804 / 16

AUDI A4 2005 Driver door control unit -J386-

Driver door control unit -J386-

Location:

In window regulator motor integrated

AUDI A4 2005 Front passenger side door control unit -J387-

Front passenger side door control unit -J387-

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Location:

In window regulator motor integrated

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AUDI A4 2005 — Airbags for driver and front passenger with belt tensioners and side airbags . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2005 - Airbag igniters for driver side and front passenger side - belt tensioners

Wiring Diagram AUDI A4 2005 - Curtain airbag igniter

Wiring Diagram AUDI A4 2005 - Key operated switch to deactivate front passenger side airbag

Wiring Diagram AUDI A4 2005 - Side airbag igniter on driver side and on front passenger side - side airbag crash sensor

Wiring Diagram AUDI A4 2005 - Rear side airbag igniter on driver side and on front passenger side - rear side airbag crash sensor

Wiring Diagram AUDI A4 2005 - Belt switch - rear belt tensioner

Wiring Diagram AUDI A4 2005 - Control unit with display in dash panel insert - front airbag crash sensor

AUDI A4 2005 Control units overview

AUDI A4 2005 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-

AUDI A4 2005 Automatic gearbox control unit -J217-

AUDI A4 2005 ABS control unit -J104-

AUDI A4 2005 Radiator fan control unit -J293-

AUDI A4 2005 Fresh air blower control unit -J126-

AUDI A4 2005 Headlight range control, control unit -J431-

AUDI A4 2005 Steering column electronics control unit -J527-

AUDI A4 2005 Display control unit in dash panel insert -J285-

AUDI A4 2005 Airbag control unit -J234-

AUDI A4 2005 Onboard power supply control unit -J519-

AUDI A4 2005 Trailer detector control unit -J345-

AUDI A4 2005 Parking aid control unit -J446-

AUDI A4 2005 Navigation operating electronics control unit -J402-

AUDI A4 2005 Radio -R-

AUDI A4 2005 Navigation system with CD drive control unit -J401-

AUDI A4 2005 Control unit with display for radio and navigation system -J503-

AUDI A4 2005 CD changer -R41-

AUDI A4 2005 Telephone and telematics control unit, telematics -J526-

AUDI A4 2005 Language input control unit -J507-

AUDI A4 2005 Convenience system central control unit -J393-

AUDI A4 2005 Driver door control unit -J386-

AUDI A4 2005 Front passenger side door control unit -J387-

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