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AUDI A4 2003 – Radio navigation system (RNS-D) . Wiring diagrams, Pin Connector, Location

    HomeAUDIAUDI A4AUDI A4 2003AUDI A4 2003 ALL WIRING DIAGRAMS - ENGLISH

Wiring Diagram AUDI A4 2003 - Voltage supply



Wiring Diagram AUDI A4 2003 - Voltage supply
DIgnition/starter switch
J402Operating electronics control unit, navigation
S239Fuse in fuse box
T88-pin connector, black, radio connector III
T2626-pin connector, black, on operating electronics control unit, navigation
   346 Earth connection (audio), in dash panel wiring harness
   501 Screw connection -2- (30), on relay plate
   A2 Positive (+) connection (15), in dash panel wiring harness
   A21 Connection (86s), in dash panel wiring harness
   A32 Positive (+) connection (30), in dash panel wiring harness
   A46 Positive (+) connection (30 - from radio), in dash panel wiring harness
   A57 Positive (+) connection -3- (30), in dash panel wiring harness
*Models with active loudspeakers
**Models with Bose loudspeakers

Wiring Diagram AUDI A4 2003 - Operating electronics control unit - navigation



Wiring Diagram AUDI A4 2003 - Operating electronics control unit - navigationGet access to all wiring diagrams of the car
F4Reversing light switch
J104ABS with EDL control unit
J402Operating electronics control unit, navigation
T88-pin connector, black, radio connector III
T1717-pin connector, black, connector point, A pillar, left
T17d17-pin connector, red, connector point, electronics box, plenum chamber
T20d20-pin connector, black, radio connector I
T2626-pin connector, black, on operating electronics control unit, navigation
   A87 Connection (RF (reversing light)), in dash panel wiring harness
   A127 Connection (rear left speed sensor), in dash panel wiring harness
   A129 Connection (muting), in dash panel wiring harness
   V49 Connection (low frequency, NF +), in communication wiring harness
   V50 Connection (low frequency, NF -), in communication wiring harness
*See applicable Current Flow Diagram: Telephone

Wiring Diagram AUDI A4 2003 - Active loudspeakers - front



Wiring Diagram AUDI A4 2003 - Active loudspeakers - frontGet access to all wiring diagrams of the car
J402Operating electronics control unit, navigation
R21Bass loudspeaker, front left
R23Bass loudspeaker, front right
R26Mid-range/treble loudspeaker, front left
R27Mid-range/treble loudspeaker, front right
R70Internal loudspeaker (centre loudspeaker)
T8a8-pin connector, brown, radio connector II
T2020-pin connector, black, door, A pillar, left
T20a20-pin connector, black, door, A pillar, right
*Only applies to models with active loudspeakers

Wiring Diagram AUDI A4 2003 - Active loudspeakers - rear



Wiring Diagram AUDI A4 2003 - Active loudspeakers - rearGet access to all wiring diagrams of the car
J402Operating electronics control unit, navigation
R12Amplifier
R15Bass loudspeaker, rear left
R17Bass loudspeaker, rear right
R34Mid-range/treble loudspeaker, rear left
R35Mid-range/treble loudspeaker, rear right
R100Bass loudspeaker
T20b20-pin connector, black, door, B pillar, left
T20c20-pin connector, black, door, B pillar, right
T20d20-pin connector, black, radio connector I
   346 Earth connection (audio), in dash panel wiring harness
*Only applies to models with active loudspeakers

Wiring Diagram AUDI A4 2003 - Bose loudspeakers - front



Wiring Diagram AUDI A4 2003 - Bose loudspeakers - frontGet access to all wiring diagrams of the car
J402Operating electronics control unit, navigation
R12Amplifier
R21Bass loudspeaker, front left
R23Bass loudspeaker, front right
R26Mid-range/treble loudspeaker, front left
R27Mid-range/treble loudspeaker, front right
R70Internal loudspeaker (centre loudspeaker)
T2020-pin connector, black, door, A pillar, left
T20a20-pin connector, black, door, A pillar, right
T20d20-pin connector, black, radio connector I
   133 Earth connection, in loudspeaker wiring harness
   346 Earth connection (audio), in dash panel wiring harness
*Only applies to models with Bose sound system

Wiring Diagram AUDI A4 2003 - Bose loudspeakers - rear



Wiring Diagram AUDI A4 2003 - Bose loudspeakers - rearGet access to all wiring diagrams of the car
J402Operating electronics control unit, navigation
R12Amplifier
R15Bass loudspeaker, rear left
R17Bass loudspeaker, rear right
R34Mid-range/treble loudspeaker, rear left
R35Mid-range/treble loudspeaker, rear right
R100Bass loudspeaker
T20b20-pin connector, black, door, B pillar, left
T20c20-pin connector, black, door, B pillar, right
*Only applies to models with Bose sound system

Wiring Diagram AUDI A4 2003 - CD changer



Wiring Diagram AUDI A4 2003 - CD changerGet access to all wiring diagrams of the car
J402Operating electronics control unit, navigation
R41CD changer
T20d20-pin connector, black, radio connector I
   309 Earth connection -1-, screening, in CD changer wiring harness
   310 Earth connection -2-, screening, in CD changer wiring harness
   346 Earth connection (audio), in dash panel wiring harness
   V14 Connection (screening), in CD changer wiring harness
*Only applies to models with CD changer

Wiring Diagram AUDI A4 2003 - Navigation operating electronics control unit - navigation/TV tuner



Wiring Diagram AUDI A4 2003 - Navigation operating electronics control unit - navigation/TV tunerGet access to all wiring diagrams of the car
J402Operating electronics control unit, navigation
J415Navigation/TV tuner
T1111-pin connector, on navigation/TV tuner
T5454-pin connector, black, on navigation/TV tuner

Wiring Diagram AUDI A4 2003 - Navigation operating electronics control unit - navigation/TV tuner - aerial - navigation interface



Wiring Diagram AUDI A4 2003 - Navigation operating electronics control unit - navigation/TV tuner - aerial - navigation interfaceGet access to all wiring diagrams of the car
J402Operating electronics control unit, navigation
J415Navigation/TV tuner
R1Aerial connection
R11Aerial
R94Navigation interface
T2626-pin connector, black, on operating electronics control unit, navigation
T5454-pin connector, black, on navigation/TV tuner
   346 Earth connection (audio), in dash panel wiring harness
   A148 Connection (navigation CAN bus, high), in dash panel wiring harness
   A149 Connection (navigation CAN bus, low), in dash panel wiring harness

Wiring Diagram AUDI A4 2003 - Control unit with display in dash panel insert - navigation operating electronics control unit - navigation interface - CAN bus



Wiring Diagram AUDI A4 2003 - Control unit with display in dash panel insert - navigation operating electronics control unit - navigation interface - CAN busGet access to all wiring diagrams of the car
J285Control unit with display in dash panel insert
J402Operating electronics control unit, navigation
J415Navigation/TV tuner
R94Navigation interface
T88-pin connector, black, radio connector III
T1616-pin connector, black, diagnostic connector
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
T5454-pin connector, black, on navigation/TV tuner
   346 Earth connection (audio), in dash panel wiring harness
   A27 Connection (speed signal), in dash panel wiring harness
   A159 Connection (L), in dash panel wiring harness
   A175 Connection (58s), in dash panel wiring harness
   A178 Connection (infotainment CAN bus, high), in dash panel wiring harness
   A179 Connection (infotainment CAN bus, low), in dash panel wiring harness
*Applicable up to model year 2002
**Applicable from model year 2003


AUDI A4 2003 Control units overview

Control units overview
   
AUDI A4 2003 Control units overviewGet access to all wiring diagrams of the car
5 - 
5 - 

   
5 - 
q   Location for navigation system RNS-E
6 - 

   
Diesel direct injection system control unit -J248-
14 - 
17 -  Automatic gearbox control unit -J217-
q   for models with multitronic® only
q   Location

   

AUDI A4 2003 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-  
AUDI A4 2003 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-Get access to all wiring diagrams of the car
Location:
On electronics box in plenum chamber
 
AUDI A4 2003 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361-Get access to all wiring diagrams of the car

AUDI A4 2003 Automatic gearbox control unit -J217-

In electronics box in plenum chamber
for models with multitronic® only

AUDI A4 2003 ABS control unit -J104-

AUDI A4 2003 Radiator fan control unit -J293-

Radiator fan control unit -J293-
 
AUDI A4 2003 Radiator fan control unit -J293-Get access to all wiring diagrams of the car
Location:
on radiator fan
 
AUDI A4 2003 Radiator fan control unit -J293-Get access to all wiring diagrams of the car

AUDI A4 2003 Fresh air blower control unit -J126-

AUDI A4 2003 Headlight range control, control unit -J431-

Headlight range control, control unit -J431-  
AUDI A4 2003 Headlight range control, control unit -J431-Get access to all wiring diagrams of the car
Location:
Behind the glove box
 
AUDI A4 2003 Headlight range control, control unit -J431-Get access to all wiring diagrams of the car

AUDI A4 2003 Steering column electronics control unit -J527-

AUDI A4 2003 Display control unit in dash panel insert -J285-

Display control unit in dash panel insert -J285-  
AUDI A4 2003 Display control unit in dash panel insert -J285-Get access to all wiring diagrams of the car
Location:
In the dash panel behind the display unit
 
AUDI A4 2003 Display control unit in dash panel insert -J285-Get access to all wiring diagrams of the car

AUDI A4 2003 Airbag control unit -J234-

AUDI A4 2003 Onboard power supply control unit -J519-

Onboard power supply control unit -J519-  
AUDI A4 2003 Onboard power supply control unit -J519-Get access to all wiring diagrams of the car
Location:
Behind driver's storage compartment
 
AUDI A4 2003 Onboard power supply control unit -J519-Get access to all wiring diagrams of the car

AUDI A4 2003 Trailer detector control unit -J345-

AUDI A4 2003 Parking aid control unit -J446-

Parking aid control unit -J446-  
AUDI A4 2003 Parking aid control unit -J446-Get access to all wiring diagrams of the car
Location:
In left luggage compartment, behind side trim, on apron
 
AUDI A4 2003 Parking aid control unit -J446-Get access to all wiring diagrams of the car

AUDI A4 2003 Navigation operating electronics control unit -J402-



AUDI A4 2003 Radio -R-

AUDI A4 2003 Navigation system with CD drive control unit -J401-
in centre console
For navigation system RNS-E only

AUDI A4 2003 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 2003 CD changer -R41-

CD changer -R41-
 
AUDI A4 2003 CD changer -R41-Get access to all wiring diagrams of the car
Location:
In glove compartment
 
AUDI A4 2003 CD changer -R41-Get access to all wiring diagrams of the car

AUDI A4 2003 Telephone and telematics control unit, telematics -J526-



AUDI A4 2003 Language input control unit -J507-

AUDI A4 2003 Convenience system central control unit -J393-

Convenience system central control unit -J393-
   
Location:
on sill, front left
 
AUDI A4 2003 Convenience system central control unit -J393-Get access to all wiring diagrams of the car

AUDI A4 2003 Driver door control unit -J386-

AUDI A4 2003 Front passenger side door control unit -J387-

Location:
In window regulator motor integrated
 
AUDI A4 2003 Front passenger side door control unit -J387-Get access to all wiring diagrams of the car


AUDI A4 2003 Overview of fuses

Overview of fuses
   
AUDI A4 2003 Overview of fusesGet access to all wiring diagrams of the car
Relay carrier (3-pin)
q   Components: -S126-, -S328-
q   Location
Relay carrier (9-pin) with onboard supply control unit
q   Components: -S37-, -S45-, -S87-, -S100-, -S184-, -S280-
q   Location
Relay carrier (4-pin) with screw connection
q   Components: -S42-, -S51-, -S123-, -S214-
q   Location up to July 2004
q   Location from August 2004

   
6 -  Fuse holder
q   Components: -S1- up to -S22- and -S223- up to -S244-
q   Location up to July 2004
q   Location from August 2004
7 -  Fuse holder for special vehicles
q   Components: -S55-, -S57-, -S182-, -S183-, -S184-, -S291-, -S292-, -S293-, S294-, -S295-, -S296-, -S297-, -S298-
q   Location taxi
q   Location police

   
q   Location for diesel engines, up to July 2004
q   Location for engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD
q   Location for engine codes BSG, BPP, BTP, BKN, ASB
q   Location for engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK
q   Location for engine code ALZ
q   Location for engine code ALT
q   Location for engine code BDG
q   Location for engine codes BFB, BBK, BHF
q   Location for engine code AWA

   
t  Location for engine codes AUK, BKH
t  Location for engine code BNS
t  Location for engine code BBJ, with manual gearbox or multitronic
t  Location for engine code BBJ with AG5

   

AUDI A4 2003 Position of fuses, coupling station of A-pillar

Position of fuses, coupling station of A-pillar    
Location:
bottom right, behind the trim
Fuses:
E -  Seat adjustment fuse -S46-
E -  Seat adjustment fuse -S46- (with lumbar support adjustment)
 
AUDI A4 2003 Position of fuses, coupling station of A-pillarGet access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (3-pin)

Position of fuses, relay carrier (3-pin)    
Location:
Driver side dash panel
Fuses:
A ¹) -  Auxiliary heater fuse -S62-
B -  Auxiliary heater fuse -S126-
C -  Auxiliary heater fuse 2 -S328-
¹) applicable up to model year 2003
 
AUDI A4 2003 Position of fuses, relay carrier (3-pin)Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (9-pin) with onboard supply control unit

Position of fuses, relay carrier (9-pin) with onboard supply control unit    
Location:
Driver side dash panel, behind the relay carrier (3-pin)
Fuses:
A -  Rear roller blind thermal fuse -S100-
B -  Rear roller blind thermal fuse -S100-
B -  Socket 1 fuse (driving school vehicle) -S184-
D -  Window regulator single fuse 2 -S280-
E -  Driver seat adjustment thermal fuse 2 -S45-
F -  Window regulator single fuse -S37-
G -  Trailer towing attachment thermal fuse -S87-
 
AUDI A4 2003 Position of fuses, relay carrier (9-pin) with onboard supply control unitGet access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin) with screw connection, up to July 2004

Position of fuses, relay carrier (4-pin) with screw connection, up to July 2004    
Location:
Driver side dash panel
Fuses:
B -  Optional equipment: vermin repellent
E -  Radiator fan run-on fuse -S214-
F -  Special vehicle fuse
G -  Radiator fan single fuse -S42-
H -  ABS control unit fuse 1 -S123-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin) with screw connection, up to July 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin) with screw connection, from August 2004

Position of fuses, relay carrier (4-pin) with screw connection, from August 2004    
Location:
Driver side dash panel
Fuses:
B -  Optional equipment: vermin repellent
E -  S51 - Fuse (driving school vehicle) ¹) -S51-
F -  Fuse (driving school vehicle) ³) -S51-
 -  Radiator fan single fuse ¹)²) -S42-
G -  Radiator fan run-on fuse¹)²) -S214-
 -  Radiator fan single fuse ⁴) -S42-
H -  ABS control unit fuse 1 -S123-
¹) for engine codes BBK, BHF, BNS only
²) for engine codes BKN, ASB, BPP, BSG, BTP only
³) not for engine codes BBK, BHF
⁴) not for engine codes BKN, ASB, BPP, BSG, BTP, BBK, BHF
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin) with screw connection, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), petrol engines, up to July 2004

Position of fuses, relay carrier (4-pin), petrol engines, up to July 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Secondary air pump fuse -S130-
C -  Automatic gearbox fuse, run-on -S286-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), petrol engines, up to July 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), diesel engines, up to July 2004

Position of fuses, relay carrier (4-pin), diesel engines, up to July 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine control unit fuse -S102-
 -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Automatic gearbox fuse, run-on -S286-
 -  Engine control unit fuse ²) -S102-
D -  Glow plug fuse 2 -S189-
F ¹) -  Glow plug fuse 2 -S189-
¹) applicable from model year 2002
²) for models with engine code BKE only
  Note:
The positions D and F are in the electronics box.
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), diesel engines, up to July 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Engine control unit fuse -S102-
D -  Automatic gearbox fuse, run-on -S286-
E -  Engine electronics fuse 2 -S344-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Engine control unit fuse -S102-
D -  Automatic gearbox fuse, run-on -S286-
E -  Engine electronics fuse 2 -S344-
G -  Engine electronics fuse 3 -S345-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine electronics fuse 3 -S345-
C -  Engine control unit fuse -S102-
D -  Fuse 1 -S131-
E -  Engine electronics fuse 2 -S344-
G -  Automatic gearbox fuse, run-on -S286-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code ALZ, from August 2004

Position of fuses, relay carrier (4-pin), engine code ALZ, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Secondary air pump fuse -S130-
D -  Engine control unit fuse -S102-
E -  Injector fuse -S116-
G -  Engine electronics fuse -S282-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code ALZ, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code ALT, from August 2004

Position of fuses, relay carrier (4-pin), engine code ALT, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Engine electronics fuse -S282-
C -  Automatic gearbox fuse, run-on -S286-
D -  Engine control unit fuse -S102-
E -  Injector fuse -S116-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code ALT, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code BDG, from August 2004

Position of fuses, relay carrier (4-pin), engine code BDG, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine glow plug strip fuse -S39-
C -  Automatic gearbox fuse, run-on -S286-
H¹) -  Glow plug fuse 2 -S189-
¹) on the relay carrier underside
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code BDG, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004

Position of fuses, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Secondary air pump fuse -S130-
C -  Automatic gearbox fuse, run-on -S286-
D -  Engine control unit fuse -S102-
E -  Injector fuse -S116-
G -  Engine electronics fuse -S282-
H¹) -  Heater fuse ²) -S23-
¹) on the relay carrier underside
²) for China only
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code AWA, from August 2004

Position of fuses, relay carrier (4-pin), engine code AWA, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse -S282-
B -  Engine electronics fuse 2 -S344-
C -  Automatic gearbox fuse, run-on -S286-
D -  Fuse 1 -S131-
H ¹) -  Engine electronics fuse 3 -S345-
¹) on the relay carrier underside
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code AWA, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes AUK, BKH, from August 2004

Position of fuses, relay carrier (4-pin), engine codes AUK, BKH, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Engine electronics fuse -S282-
C -  Engine control unit fuse -S102-
D -  Fuse 1 -S131-
E -  Lambda probe heating thermal fuse -S73-
G -  Automatic gearbox fuse, run-on -S286-
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes AUK, BKH, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code BNS, from August 2004

Position of fuses, relay carrier (4-pin), engine code BNS, from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 -S344-
B -  Engine electronics fuse -S282-
C -  Engine control unit fuse -S102-
D -  Fuse 1 -S131-
E -  Lambda probe heating thermal fuse -S73-
? -  Brake vacuum pump fuse -S283-
H ¹) -  Secondary air pump fuse -S130-
¹) on the relay carrier underside
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code BNS, from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BBJ (with manual gearbox or multitronicВ®), from August 2004

Position of fuses, relay carrier (4-pin), engine codes BBJ (with manual gearbox or multitronic®), from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine electronics fuse 2 ¹) -S344-
B -  Secondary air pump fuse ¹) -S130-
C -  Automatic gearbox fuse, run-on ¹) -S286-
D -  Engine control unit fuse¹) -S102-
E -  Injector fuse ¹) -S116-
G -  Engine electronics fuse ¹) -S282-
¹) for models with manual gearbox or with automatic gearbox (multitronic®) only
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BBJ (with manual gearbox or multitronicВ®), from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BBJ (with AG5), from August 2004

Position of fuses, relay carrier (4-pin), engine codes BBJ (with AG5), from August 2004    
Location:
In electronics box in plenum chamber
Fuses:
A -  Engine control unit fuse ¹) -S102-
B -  Secondary air pump fuse ¹) -S130-
C -  Engine electronics fuse ¹) -S282-
D -  Engine electronics fuse 2 ¹) -S344-
E -  Injector fuse ¹) -S116-
¹) for models with automatic gearbox (AG5) only
 
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes BBJ (with AG5), from August 2004Get access to all wiring diagrams of the car

AUDI A4 2003 Position of fuses, fuse holder, up to July 2004

Position of fuses, fuse holder, up to July 2004    
Location:
Driver side dash panel
Fuse colours
35 A -  green-blue
30 A -  green
25 A -  white
20 A -  yellow
15 A -  blue
10 A -  red
7,5 A -  brown
5 A -  beige
  Note:
From fuse number 23 upwards the fuses in the fuse holder are designated as 223 in the Current Flow Diagram
 
AUDI A4 2003 Position of fuses, fuse holder, up to July 2004Get access to all wiring diagrams of the car

Audi A4 Fitting Locations No.  802 / 27
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
10 - S10 - Fuse in relay plate fuse holder 5 A - E102 - Headlight range control regulator
J431 - Headlight range control, control unit
J668 - Power output module for right headlight
V48 - Left headlight range control motor
V49 - Right headlight range control motor		 15
11 - S11 - Fuse in relay plate fuse holder 10 A - J234 - Airbag control unit
J706 - Seat occupied recognition control unit
K145 - Front passenger side airbag deactivated warning lamp		 15
12 - S12 - Fuse in relay plate fuse holder 10 A - T16 - 16-pin connector, black, diagnostic connector 30
13 - S13 - Fuse in relay plate fuse holder 10 A - J527 - Steering column electronics control unit 30
14 - S14 - Fuse in relay plate fuse holder 10 A - F - Brake light switch 30
15 - S15 - Fuse in relay plate fuse holder 10 A - J285 - Control unit in dash panel insert 30
16 - S16 - Fuse in relay plate fuse holder 5 A - E284 - Garage door operating unit
J530 - Garage door operation control unit		 15
17 - S17 - Fuse in relay plate fuse holder   - Vacant  
18 - S18 - Fuse in relay plate fuse holder   - Vacant  

   

Audi A4 Fitting Locations No.  802 / 29
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
29 - S229 - Fuse on fuse holder 20 A - N70 - Ignition coil 1 with output stage
N127 - Ignition coil 2 with output stage
N291 - Ignition coil 3 with output stage
N292 - Ignition coil 4 with output stage
N323 - Ignition coil 5 with output stage
N324 - Ignition coil 6 with output stage
N325 - Ignition coil 7 with output stage
N326 - Ignition coil 8 with output stage		 87
30 - S230 - Fuse on fuse holder 20 A - J245 - Sliding sunroof adjustment control unit 30
31 - S231 - Fuse on fuse holder 15 A - F125 - Multifunction switch
F4 - Reversing light switch
G70 - Air mass meter
G399 - Light detector sensor
J217 - Automatic gearbox control unit
J226-Starter inhibitor and reversing light relay
N110 - Selector lever lock solenoid
T16 - 16-pin connector, black, diagnostic connector
Y7 - Automatic anti-dazzle interior mirror		 15
32 - S232 - Fuse on fuse holder 20 A - J583 - NOx sensor control unit
N30 - Injector, cylinder 1
N31 - Injector, cylinder 2
N32 - Injector, cylinder 3
N33 - Injector, cylinder 4
N83 - Injector, cylinder 5
N84 - Injector, cylinder 6		 87
33 - S233 - Fuse on fuse holder 15 A - U1 - Cigarette lighter 30

   

Audi A4 Fitting Locations No.  802 / 31
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
40 - S240 - Fuse on fuse holder 25 A - H2 - Treble tone horn
H7 - Bass tone horn
J4 - Dual tone horn relay		 30
41 - S241 - Fuse on fuse holder 30 A - J364 - Auxiliary heater control unit
R64 - Remote control receiver for auxiliary heating		 30
42 - S242 - Fuse on fuse holder 25 A - J104 - ABS control unit 30
43 - S243 - Fuse on fuse holder 15 A - J220 - Motronic control unit
J363 - Current supply relay for Simos control unit
J623 - Engine control unit
N18 - Exhaust gas recirculation valve		 15
44 - S244 - Fuse on fuse holder 30 A - E87 - Operating and display unit for air conditioning system/Climatronic
J215 - Heated rear left seat control unit
J255 - Climatronic control unit		 30

   

AUDI A4 2003 Position of fuses, fuse holder, from August 2004

Audi A4 Fitting Locations No.  802 / 34
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
10 - S10 - Fuse in relay plate fuse holder 5 A - E102 - Headlight range control regulator
J431 - Headlight range control, control unit
J668 - Power output module for right headlight
V48 - Left headlight range control motor
V49 - Right headlight range control motor		 15
11 - S11 - Fuse in relay plate fuse holder 10 A - J234 - Airbag control unit
J706 - Seat occupied recognition control unit
K145 - Front passenger side airbag deactivated warning lamp		 15
12 - S12 - Fuse in relay plate fuse holder 10 A - T16 - 16-pin connector, black, diagnostic connector 30
13 - S13 - Fuse in relay plate fuse holder 10 A - J527 - Steering column electronics control unit 30
14 - S14 - Fuse in relay plate fuse holder 10 A - F - Brake light switch 30
15 - S15 - Fuse in relay plate fuse holder 10 A - J285 - Control unit in dash panel insert
J401 - Navigation system with CD drive control unit		 30
16 - S16 - Fuse in relay plate fuse holder 5 A - E284 - Garage door operating unit
J530 - Garage door operation control unit		 15
17 - S17 - Fuse in relay plate fuse holder 10 A - G397 - Rain and light detector sensor
J446 - Parking aid control unit
J502 - Tyre pressure monitor control unit		 30
18 - S18 - Fuse in relay plate fuse holder 5 A - V318 - Left dynamic cornering light control motor 15

   

Audi A4 Fitting Locations No.  802 / 36
   
No.   Current Flow Diagram designation Nominal value   Function/component Terminal
29 - S229 - Fuse on fuse holder   - Vacant  
30 - S230 - Fuse on fuse holder 20 A - J245 - Sliding sunroof adjustment control unit 30
31 - S231 - Fuse on fuse holder 15 A - F4 - Reversing light switch
G70 - Air mass meter
G399 - Light detector sensor
J217 - Automatic gearbox control unit
N110 - Selector lever lock solenoid
T16 - 16-pin connector, black, diagnostic connector
Y7 - Automatic anti-dazzle interior mirror		 15
32 - S232 - Fuse on fuse holder 15 A - U10-Trailer socket ²) 75x
33 - S233 - Fuse on fuse holder 15 A
20 A		 - U1 - Cigarette lighter
U1 - Cigarette lighter ¹)		 30
34 - S234 - Fuse on fuse holder 30 A
20 A		 - U5 - 12 V socket
U5 - 12 V socket ¹)		 30
35 - S235 - Fuse on fuse holder 30 A
20 A		 - U - socket
U-Socket ¹)		 30
36 - S236 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit
V12 -Rear window wiper motor		 75x
37 - S237 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit
V11 - Headlight washer system pump		 75x

  Notes:
t  ¹) applicable from February 2005
t  ²) applicable from model year 2006
   

Audi A4 Fitting Locations No.  802 / 38


AUDI A4 2003 Position of fuses, fuse holder for special vehicle - taxi

AUDI A4 2003 Position of fuses, fuse holder for special vehicle - police

Position of fuses, fuse holder for special vehicle - police
   

AUDI A4 2003 Overview of earth points in engine compartment

Location:
Driver side dash panel


AUDI A4 2003

Overview of earth points in engine compartment
q   only for 2.0 l FSI motor, location
q   only for 2,5 l engine TDI, location
q   only for 2.0 l FSI motor, location
q   only for 3.0 l engine, location

   
Overview of earth points in vehicle interior
AUDI A4 2003 Overview of earth points in engine compartmentGet access to all wiring diagrams of the car

   

   
Overview of earth points in luggage compartment - saloon models
  Note:
♦ Overview of luggage compartment - Avant models
   
AUDI A4 2003 Overview of earth points in engine compartmentGet access to all wiring diagrams of the car

   
Overview of earth points in luggage compartment - Avant models
AUDI A4 2003 Overview of earth points in engine compartmentGet access to all wiring diagrams of the car
1 -  Earth point, right D-pillar -654-
q   Location
3 -  Earth point, left D-pillar -653-
q   Location
5 -  Earth point, on left in luggage compartment -50-
q   Location

   

AUDI A4 2003 Earth point, in engine compartment

Earth point, in engine compartment
Torque: 20 Nm
   12 Earth point, in engine compartment, left -arrow-
on bulkhead
Torque: 9 Nm
not for 2,0 l engine FSI
not for 2,5 l engine TDI
 
AUDI A4 2003 Earth point, in engine compartmentGet access to all wiring diagrams of the car
only for 2,0 l engine FSI
   12 Earth point, in engine compartment, left -arrow-
on bulkhead
Torque: 9 Nm
only for 2,5 l engine TDI
 
AUDI A4 2003 Earth point, in engine compartmentGet access to all wiring diagrams of the car
only for 1.8 l engine
   18 Earth point on engine block -arrow-
Torque: 8 Nm
only for 2.0 l engine
 
AUDI A4 2003 Earth point, in engine compartmentGet access to all wiring diagrams of the car
only for 2,0 l engine FSI
   18 Earth point on engine block -arrow-
Torque: 8 Nm
only for 3.0 l engine
 
AUDI A4 2003 Earth point, in engine compartmentGet access to all wiring diagrams of the car
only for 4.2 l engine
   26 Earth point, on front apron -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth point, in engine compartmentGet access to all wiring diagrams of the car

AUDI A4 2003 Earth points, in interior

Earth points, in interior
Torque: 9 Nm
   33 Earth point behind dash panel on right -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth points, in interiorGet access to all wiring diagrams of the car
Torque: 9 Nm
   44 Earth point, lower part of left A-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth points, in interiorGet access to all wiring diagrams of the car
Torque: 9 Nm
   77 Earth point, lower part of left B-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth points, in interiorGet access to all wiring diagrams of the car
Torque: 9 Nm
   610 Earth point (audio), under centre console, front -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth points, in interiorGet access to all wiring diagrams of the car

AUDI A4 2003 Earth point, in luggage compartment - saloon models

Earth point, in luggage compartment - saloon models
   50 Earth point, on left in luggage compartment -arrow-
 
AUDI A4 2003 Earth point, in luggage compartment - saloon modelsGet access to all wiring diagrams of the car
Torque: 9 Nm
   653 Earth point, left D-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth point, in luggage compartment - saloon modelsGet access to all wiring diagrams of the car
Torque: 9 Nm
   701 Earth point, in luggage compartment -arrow-
Torque: 20 Nm
 
AUDI A4 2003 Earth point, in luggage compartment - saloon modelsGet access to all wiring diagrams of the car
Earth point, in luggage compartment - Avant models
   50 Earth point, on left in luggage compartment -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth point, in luggage compartment - saloon modelsGet access to all wiring diagrams of the car
Torque: 9 Nm
   53 Earth point, on right in rear lid -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth point, in luggage compartment - saloon modelsGet access to all wiring diagrams of the car
Torque: 9 Nm
   654 Earth point, right D-pillar -arrow-
Torque: 9 Nm
 
AUDI A4 2003 Earth point, in luggage compartment - saloon modelsGet access to all wiring diagrams of the car
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