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

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

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

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

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

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

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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