AUDI A4 2002 – Airbags for driver and front passenger with belt tensioners and side airbags . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2002 - Airbags on driver’s and front passenger’s side - belt tensioners - igniters

D	Ignition/starter switch
F138	Airbag coil connector, return spring with slip ring
J234	Airbag control unit
N95	Airbag igniter, driver's side
N131	Airbag igniter 1, front passenger's side
N153	Belt tensioner igniter -1-, driver's side
N154	Belt tensioner igniter -2-, front passenger's side
T2a	2-pin connector, yellow-blue, vehicle interior, on driver's seat
T2b	2-pin connector, yellow-blue, vehicle interior, on front passenger's seat
T4e	4-pin connector, yellow, on steering column electronics control unit
T4f	4-pin connector, yellow, vehicle interior, near glove box
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
	Short circuit bridge becomes effective when connector is unplugged.

Wiring Diagram AUDI A4 2002 - Curtain airbags (driver’s and front passenger’s side) - igniters

J234	Airbag control unit
N251	Curtain airbag igniter, driver's side
N252	Curtain airbag igniter, front passenger's side
T2l	2-pin connector, yellow-blue, connector point, vehicle interior, headliner, front left
T2m	2-pin connector, yellow-blue, connector point, vehicle interior, headliner, front right
T4g	4-pin connector, yellow, connector point, vehicle interior, headliner, front left
T4h	4-pin connector, yellow, connector point, vehicle interior, headliner, front right
249	Earth connection -2-, in interior wiring harness
277	Earth connection -3-, in interior wiring harness
*	Only models with curtain airbags (saloons)
**	Only models with curtain airbags (Avant)
	Short circuit bridge becomes effective when connector is unplugged.

Wiring Diagram AUDI A4 2002 - Airbag deactivation on front passenger’s side

E26	Glove box light switch
E224	Airbag disabling key switch, front passenger's side
J234	Airbag control unit
J393	Convenience system central control unit
K145	Airbag disabled warning lamp, front passenger's side
T12d	12-pin connector, brown, glove box
T12h	12-pin connector, black, on convenience system central control unit
T17f	17-pin connector, orange, connector point, A pillar, left
W	Interior light, front
W6	Glove box light
109	Earth connection, in airbag wiring harness
238	Earth connection -1-, in interior wiring harness
B250	Positive (+) connection, in roof wiring harness
*	Only applies to models with airbag disabling key switch
#	Phased-in modification

Wiring Diagram AUDI A4 2002 - Side airbags (driver’s and front passenger’s side) - igniters

J234	Airbag control unit
J393	Convenience system central control unit
J526	Telephone, telematics control unit
N199	Side airbag igniter, driver's side
N200	Side airbag igniter, front passenger's side
T3c	3-pin connector, yellow, vehicle interior, near driver's seat
T3d	3-pin connector, yellow, vehicle interior, near front passenger's seat
T12i	12-pin connector, black, on convenience system central control unit (used to be connector 3)
T17d	17-pin connector, red, connector point, electronics box, plenum chamber
312	Earth connection 2, in airbag wiring harness
A125	Connection (crash signal), in dash panel wiring harness
*	⇒ Applicable engine Current Flow Diagram
**	Applies to 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 2002 - Rear side airbags (driver’s and front passenger’s side) - igniters - side airbag crash sensors

G179	Side airbag crash sensor, driver's side
G180	Side airbag crash sensor, front passenger's side
G256	Rear side airbag crash sensor, driver's side
G257	Rear side airbag crash sensor, front passenger's side
J234	Airbag control unit
N201	Rear side airbag igniter, driver's side
N202	Rear side airbag igniter, front passenger's side
T4i	4-pin connector, yellow, connector point: vehicle interior, rear left
T4j	4-pin connector, yellow, connector point: vehicle 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 2002 - Belt switches - rear belt tensioners

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

Wiring Diagram AUDI A4 2002 - Front airbag crash sensors for driver’s and front passenger’s side - control unit with display in dash panel insert

G283	Front airbag crash sensor, driver's side
G284	Front airbag crash sensor, front passenger's 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, connector point, A pillar, left
T17c	17-pin connector, red, connector point, A pillar, right
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 2002 Control units overview

Control units overview    

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