AUDI A4 2003 – Body electrical – Lowline . Wiring diagrams, Pin Connector, Location – Schémas de câblage pour voitures
AUTOMOTIVE ELECTRICIANS PORTAL
AUDI A4 2003 – Body electrical – Lowline . Wiring diagrams, Pin Connector, Location
Wiring Diagram AUDI A4 2003 - Earth connections https://portal-diagnostov.com/license.html
https://portal-diagnostov.com/license.html
Automotive Electricians Portal FZCO
Automotive Electricians Portal FZCO T4k 4-pin connector, black, near front bumper 3 Earth strap, engine - body 83 Earth connection -1-, in front right wiring harness 86 Earth connection -1-, in rear wiring harness 179 Earth connection, in left headlight wiring harness 249 Earth connection -2-, in interior wiring harness 345 Earth connection, in bumper, horn/fog light wiring harness
Wiring Diagram AUDI A4 2003 - Earth connections T10c 10-pin connector, purple, connector point, A pillar, left 81 Earth connection -1-, in dash panel wiring harness 135 Earth connection -2-, in dash panel wiring harness 176 Earth connection, in right headlight wiring harness 238 Earth connection -1-, in interior wiring harness 277 Earth connection -3-, in interior wiring harness 261 Earth connection, in heated washer jet wiring harness
Wiring Diagram AUDI A4 2003 - Ignition/starter switch - main fuse A Battery B Starter D Ignition/starter switch S88 Strip fuse (main fuse) T10a 10-pin connector, brown, connector point, electronics box, plenum chamber 500 Screw connection -1- (30), on relay plate 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 A33 Connection (75), in dash panel wiring harness * Only applies to models with heater element for washer jet ** See applicable engine Current Flow Diagram
Wiring Diagram AUDI A4 2003 - Steering column electronics control unit - cruise control system E45 Cruise control system switch J... Engine control units J527 Steering column electronics control unit T16a 16-pin connector, black, on steering column electronics control unit T17e 17-pin connector, white, connector point, electronics box, plenum chamber 135 Earth connection -2-, in dash panel wiring harness A2 Positive (+) connection (15), in dash panel wiring harness A21 Connection (86s), in dash panel wiring harness
Wiring Diagram AUDI A4 2003 - Turn signal switch - intermittent wiper switch - steering angle sender - horn plate - steering column electronics control unit Wiring Diagram AUDI A4 2003 - Onboard power supply control unit - steering column electronics control unit - windscreen wiper motor - washer pump - rear window wiper motor J519 Onboard power supply control unit J527 Steering column electronics control unit T8j 8-pin connector, black, behind side trim, rear left T10b 10-pin connector, black, on onboard power supply control unit T10c 10-pin connector, purple, connector point, A pillar, left T16a 16-pin connector, black, on steering column electronics control unit T17 17-pin connector, black, connector point, A pillar, left T23 23-pin connector, black, on onboard power supply control unit T32b 32-pin connector, grey, on onboard power supply control unit V Windscreen wiper motor V5 Windscreen washer pump V12 Rear window wiper motor 261 Earth connection, in heated washer jet wiring harness A146 Connection (convenience CAN bus, high), in dash panel wiring harness A147 Connection (convenience CAN bus, low), in dash panel wiring harness * Avant models - see applicable Current Flow Diagram: Avant models, rear
Wiring Diagram AUDI A4 2003 - Light switch - headlight range control regulator - onboard power supply control unit E1 Lighting switch E23 Front and rear fog light switch E102 Headlight range control adjuster J519 Onboard power supply control unit T32b 32-pin connector, grey, on onboard power supply control unit 135 Earth connection -2-, in dash panel wiring harness 238 Earth connection -1-, in interior wiring harness A3 Positive (+) connection (58), in dash panel wiring harness A51 Connection (56), in dash panel wiring harness A88 Connection (NSL (rear fog light)), in dash panel wiring harness A114 Connection (headlight range control), in dash panel wiring harness * Only applies to models without trailer socket
Wiring Diagram AUDI A4 2003 - Left headlight - left fog light J519 Onboard power supply control unit L22 Fog light bulb, left M1 Side light bulb, left M5 Turn signal bulb, front left M18 Side turn signal bulb, left M29 Dipped beam bulb, left M30 Main beam bulb, left T4k 4-pin connector, black, near front bumper T17 17-pin connector, black, connector point, A pillar, left T17a 17-pin connector, red, connector point, A pillar, left T23 23-pin connector, black, on onboard power supply control unit T32b 32-pin connector, grey, on onboard power supply control unit V48 Headlight range control motor, left 179 Earth connection, in left headlight wiring harness 345 Earth connection, in bumper, horn/fog light wiring harness A6 Positive (+) connection (left turn signal), in dash panel wiring harness A84 Connection (58L), in dash panel wiring harness E117 Connection (56a, left), in dash panel wiring harness * Depending on vehicle equipment
Wiring Diagram AUDI A4 2003 - Right headlight - right fog light J519 Onboard power supply control unit L23 Fog light bulb, right M3 Side light bulb, right M7 Turn signal bulb, front right M19 Side turn signal bulb, right M31 Dipped beam bulb, right M32 Main beam bulb, right T4k 4-pin connector, black, near front bumper T17 17-pin connector, black, connector point, A pillar, left T17c 17-pin connector, red, connector point, A pillar, right T23 23-pin connector, black, on onboard power supply control unit T32b 32-pin connector, grey, on onboard power supply control unit V49 Headlight range control motor, right 176 Earth connection, in right headlight wiring harness 345 Earth connection, in bumper, horn/fog light wiring harness A5 Positive (+) connection (right turn signal), in dash panel wiring harness A85 Connection (58R), in dash panel wiring harness E116 Connection (56a, right), in dash panel wiring harness * Depending on vehicle equipment
Wiring Diagram AUDI A4 2003 - Tail lights F Brake light switch J519 Onboard power supply control unit L46 Rear fog light bulb, left M2 Tail light bulb, right M4 Tail light bulb, left M6 Turn signal bulb, rear left M8 Turn signal bulb, rear right M9 Brake light bulb, left M10 Brake light bulb, right M16 Reversing light bulb, left M17 Reversing light bulb, right M25 High level brake light bulb T4l 4-pin connector, black, in rear lid T17d 17-pin connector, red, connector point, electronics box, plenum chamber T32b 32-pin connector, grey, on onboard power supply control unit X Number plate light 86 Earth connection -1-, in rear wiring harness 249 Earth connection -2-, in interior wiring harness A18 Connection (54), in dash panel wiring harness A87 Connection (RF (reversing light)), in dash panel wiring harness B132 Connection (number plate light), in interior wiring harness * Avant models - see applicable Current Flow Diagram: Avant models, rear
Wiring Diagram AUDI A4 2003 - Hazard warning lights button - dual tone horn - onboard power supply control unit E229 Hazard warning lights button H2 High tone horn H7 Low tone horn J4 Dual tone horn relay J519 Onboard power supply control unit T4k 4-pin connector, black, near front bumper T10b 10-pin connector, black, on onboard power supply control unit T17a 17-pin connector, red, connector point, A pillar, left T23 23-pin connector, black, on onboard power supply control unit T32b 32-pin connector, grey, on onboard power supply control unit 135 Earth connection -2-, in dash panel wiring harness 345 Earth connection, in bumper, horn/fog light wiring harness A90 Connection (dual tone horn), in dash panel wiring harness B260 Connection (hazard warning lights), in interior wiring harness E112 Connection (horn-87h), in dash panel wiring harness X66 Connection (horn), in front bumper wiring harness
Wiring Diagram AUDI A4 2003 - X contact relief relay - onboard power supply control unit - headlight washer system pump J59 X contact relief relay J519 Onboard power supply control unit S19 Fuse in fuse box/relay plate S236 Fuse in fuse box S237 Fuse in fuse box (headlight washer system) T1a Single connector, black, connector point, A pillar, left T8j 8-pin connector, black, behind side trim, rear left T10b 10-pin connector, black, on onboard power supply control unit T32b 32-pin connector, grey, on onboard power supply control unit V11 Headlight washer system pump A34 Connection (75x), in dash panel wiring harness A57 Positive (+) connection -3- (30), in dash panel wiring harness * Fuse rating increased from 25 A to 30 A. ** Protected via fuse S237, only applies to models with headlight washer system *** Avant models ⇒ applicable Current Flow Diagram: Avant models, rear
Wiring Diagram AUDI A4 2003 - Fuses - radio connector III Wiring Diagram AUDI A4 2003 - Fuses - glove box light - footwell lights E26 Glove box light switch J393 Convenience system central control unit S2 Fuse in fuse box/relay plate T12d 12-pin connector, brown, near glove box T12h 12-pin connector, black, on convenience system central control unit (used to be connector 1) T12i 12-pin connector, black, on convenience system central control unit (used to be connector 3) T16h 16-pin connector, black, on convenience system central control unit (used to be connector 2) T16i 16-pin connector, brown, on convenience system central control unit (used to be connector 5) W6 Glove box light W9 Left footwell light W10 Right footwell light 238 Earth connection -1-, in interior wiring harness A29 Connection (interior light), in dash panel wiring harness A57 Positive (+) connection -3- (30), in dash panel wiring harness * Only applies to models with airbag disabling key switch
Wiring Diagram AUDI A4 2003 - Fuses - ashtray illumination - cigarette lighter - heated rear window C18 Window aerial suppression filter E87 Air conditioning system/Climatronic operating and display unit L15 Ashtray light bulb L28 Cigarette lighter light bulb S226 Fuse in fuse box S233 Fuse in fuse box U1 Cigarette lighter Z1 Heated rear window 135 Earth connection -2-, in dash panel wiring harness 238 Earth connection -1-, in interior wiring harness A57 Positive (+) connection -3- (30), in dash panel wiring harness B180 Connection (heated rear window), in interior wiring harness B248 Connection -2- (heated rear window), in interior wiring harness * Avant models - see applicable Current Flow Diagram: Avant models, rear
Wiring Diagram AUDI A4 2003 - Fuses - socket - heated washer jets - reversing light switch F4 Reversing light switch S3 Fuse in fuse box/relay plate S5 Fuse in fuse box/relay plate S20 Fuse in fuse box/relay plate S21 Fuse in fuse box/relay plate S231 Fuse in fuse box S235 Fuse in fuse box T10a 10-pin connector, brown, connector point, electronics box, plenum chamber T10c 10-pin connector, purple, connector point, A pillar, left U Socket Z20 Heater element, left washer jet Z21 Heater element, right washer jet 249 Earth connection -2-, in interior wiring harness 261 Earth connection, in heated washer jet wiring harness A52 Positive (+) connection -2- (30), in dash panel wiring harness A70 Connection (15a, fuse 231), in dash panel wiring harness A74 Connection (15a, fuse 5), in dash panel wiring harness * Only applies to models with heated washer jets ** Only applies to models with 5-speed manual gearbox *** Only applies to models with 6-speed manual gearbox
Wiring Diagram AUDI A4 2003 - Fuel gauge sender - ambient temperature switch - oil level/oil temperature sender - coolant temperature sender - coolant shortage indicator switch D2 Immobilizer reading coil F38 Ambient temperature switch F66 Coolant shortage indicator switch G Fuel gauge sender G1 Fuel gauge G2 Coolant temperature sender G3 Coolant temperature gauge G169 Fuel gauge sender -2- G266 Oil level/oil temperature sender J285 Control unit with display in dash panel insert T10 10-pin connector, black, connector point, electronics box, plenum chamber T10a 10-pin connector, brown, connector point, electronics box, plenum chamber T10d 10-pin connector, grey, connector point, A pillar, left T14 14-pin connector, black, in engine compartment, left T32 32-pin connector, blue, on dash panel insert 83 Earth connection -1-, in front right wiring harness 269 Earth connection (sender earth) -1-, in dash panel wiring harness 327 Earth connection (sender earth), in engine compartment wiring harness * Only models with four-wheel drive
Wiring Diagram AUDI A4 2003 - Control unit with display in dash panel insert - brake fluid level warning contact - oil pressure switch C Alternator F1 Oil pressure switch F34 Brake fluid level warning contact G5 Rev. counter J... Engine control units J234 Airbag control unit J285 Control unit with display in dash panel insert K2 Alternator warning lamp K75 Airbag warning lamp T2 2-pin connector, black, engine compartment, right T10 10-pin connector, black, connector point, electronics box, plenum chamber T10c 10-pin connector, purple, connector point, A pillar, left T17d 17-pin connector, red, connector point, electronics box, plenum chamber T32a 32-pin connector, green, on dash panel insert 261 Earth connection, in heated washer jet wiring harness A17 Connection (61), in dash panel wiring harness A121 Connection (high bus), in dash panel wiring harness A122 Connection (low bus), in dash panel wiring harness
Wiring Diagram AUDI A4 2003 - Control unit with display in dash panel insert - illumination for dash panel vents - radio controlled clock J285 Control unit with display in dash panel insert J489 Radio wave clock receiver L50 Rear centre ashtray light bulb L67 Dash panel left vent illumination L68 Dash panel central vent illumination L69 Dash panel right vent illumination L120 Shelf illumination L121 Cup holder illumination L122 Coin holder illumination T4m 4-pin connector, black, on dash panel insert T32a 32-pin connector, green, on dash panel insert Y8 Radio wave controlled clock 81 Earth connection -1-, in dash panel wiring harness 238 Earth connection -1-, in interior wiring harness A175 Connection (58s), in dash panel wiring harness * Depending on vehicle equipment
Wiring Diagram AUDI A4 2003 - Control unit with display in dash panel insert - diagnostic connector G21 Speedometer J104 ABS with EDL control unit J285 Control unit with display in dash panel insert L157 Centre armrest illumination T16 16-pin connector, black, diagnostic connector T17b 17-pin connector, green, connector point, A pillar, left T32a 32-pin connector, green, on dash panel insert 135 Earth connection -2-, in dash panel wiring harness 283 Earth connection -2-, in engine prewiring wiring harness A27 Connection (speed signal), in dash panel wiring harness A76 Connection (diagnosis wire K), in dash panel wiring harness A175 Connection (58s), in dash panel wiring harness
Wiring Diagram AUDI A4 2003 - Control unit with display in dash panel insert - brake lining/pad wear senders - bonnet contact switch F266 Bonnet contact switch G34 Brake lining/pad wear sender, front left G35 Brake lining/pad wear sender, front right J285 Control unit with display in dash panel insert J393 Convenience system central control unit T4n 4-pin connector, black, front left T4o 4-pin connector, black, front right T5a 5-pin connector, black, front left T5b 5-pin connector, black, front right T10d 10-pin connector, grey, connector point, A pillar, left T14 14-pin connector, black, in engine compartment, left T17b 17-pin connector, green, connector point, A pillar, left T20g 20-pin connector, red, on convenience system central control unit (used to be connector 4) T32 32-pin connector, blue, on dash panel insert T32a 32-pin connector, green, on dash panel insert 179 Earth connection, in left headlight wiring harness * Does not apply to Audi S4 models ** Applies to Audi S4 models only
AUDI A4 2003 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 Fitting Locations No. 801 / 3
Overview of earth points in luggage compartment - saloon models
Note:
♦ Overview of luggage compartment - Avant models
Overview of earth points in luggage compartment - Avant models
1 - Earth point, right D-pillar -654-
3 - Earth point, left D-pillar -653-
5 - Earth point, on left in luggage compartment -50-
AUDI A4 2003 Earth point, in engine compartment 11 Earth point, in battery box -arrow-
12 Earth point, in engine compartment, left -arrow-
12 Earth point, in engine compartment, left -arrow-
only for 2,0 l engine FSI
12 Earth point, in engine compartment, left -arrow-
only for 2,5 l engine TDI
18 Earth point on engine block -arrow-
18 Earth point on engine block -arrow-
18 Earth point on engine block -arrow-
only for 2,0 l engine FSI
18 Earth point on engine block -arrow-
19 Earth point, near coil -arrow-
26 Earth point, on front apron -arrow-
624 Earth point, starter battery -arrow-
AUDI A4 2003 Earth points, in interior 32 Earth point behind dash panel on left -arrow-
33 Earth point behind dash panel on right -arrow-
43 Earth point, lower part of right A-pillar -arrow-
44 Earth point, lower part of left A-pillar -arrow-
49 Earth point, near convenience system central control unit -arrow-
77 Earth point, lower part of left B-pillar -arrow-
78 Earth point, lower part of right B-pillar -arrow-
610 Earth point (audio), under centre console, front -arrow-
AUDI A4 2003 Earth point, in luggage compartment - saloon models
50 Earth point, on left in luggage compartment -arrow-
653 Earth point, left D-pillar -arrow-
654 Earth point, right D-pillar -arrow-
701 Earth point, in luggage compartment -arrow-
Earth point, in luggage compartment - Avant models
50 Earth point, on left in luggage compartment -arrow-
52 Earth point, on left in rear lid -arrow-
53 Earth point, on right in rear lid -arrow-
653 Earth point, left D-pillar -arrow-
654 Earth point, right D-pillar -arrow-
AUDI A4 2003 Overview of fuses q Components: -S126-, -S328-
q Components: -S37-, -S45-, -S87-, -S100-, -S184-, -S280-
q Components: -S42-, -S51-, -S123-, -S214-
q Location up to July 2004
q Location from August 2004
Audi A4 Fitting Locations No. 802 / 2
q Components: -S1- up to -S22- and -S223- up to -S244-
q Location up to July 2004
q Location from August 2004
7 -
q Components: -S55-, -S57-, -S182-, -S183-, -S184-, -S291-, -S292-, -S293-, S294-, -S295-, -S296-, -S297-, -S298-
Audi A4 Fitting Locations No. 802 / 3
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
Audi A4 Fitting Locations No. 802 / 4
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 bottom right, behind the trim
E - Seat adjustment fuse -S46-
E - Seat adjustment fuse -S46- (with lumbar support adjustment)
AUDI A4 2003 Position of fuses, relay carrier (3-pin) 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 (9-pin) with onboard supply control unit Driver side dash panel, behind the relay carrier (3-pin)
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 (4-pin) with screw connection, up to July 2004 B - Optional equipment: vermin repellent
E - Radiator fan run-on fuse -S214-
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, from August 2004 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), petrol engines, up to July 2004 In electronics box in plenum chamber
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), diesel engines, up to July 2004 In electronics box in plenum chamber
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), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004 In electronics box in plenum chamber
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 BSG, BPP, BTP, BKN, ASB, from August 2004 In electronics box in plenum chamber
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 BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004 In electronics box in plenum chamber
A - Engine electronics fuse -S282-
B - Engine electronics fuse 3 -S345-
C - Engine control unit fuse -S102-
E - Engine electronics fuse 2 -S344-
G - Automatic gearbox fuse, run-on -S286-
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code ALZ, from August 2004 In electronics box in plenum chamber
A - Engine electronics fuse 2 -S344-
B - Secondary air pump fuse -S130-
D - Engine control unit fuse -S102-
G - Engine electronics fuse -S282-
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code ALT, from August 2004 In electronics box in plenum chamber
A - Engine electronics fuse 2 -S344-
B - Engine electronics fuse -S282-
C - Automatic gearbox fuse, run-on -S286-
D - Engine control unit fuse -S102-
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code BDG, from August 2004 In electronics box in plenum chamber
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 codes BFB, BBK, BHF, from August 2004 In electronics box in plenum chamber
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-
G - Engine electronics fuse -S282-
H¹) - Heater fuse ²) -S23-
¹) on the relay carrier underside
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine code AWA, from August 2004 In electronics box in plenum chamber
A - Engine electronics fuse -S282-
B - Engine electronics fuse 2 -S344-
C - Automatic gearbox fuse, run-on -S286-
H ¹) - Engine electronics fuse 3 -S345-
¹) on the relay carrier underside
AUDI A4 2003 Position of fuses, relay carrier (4-pin), engine codes AUK, BKH, from August 2004 In electronics box in plenum chamber
A - Engine electronics fuse 2 -S344-
B - Engine electronics fuse -S282-
C - Engine control unit fuse -S102-
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 code BNS, from August 2004 In electronics box in plenum chamber
A - Engine electronics fuse 2 -S344-
B - Engine electronics fuse -S282-
C - Engine control unit fuse -S102-
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 codes BBJ (with manual gearbox or multitronicВ®), from August 2004 In electronics box in plenum chamber
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 AG5), from August 2004 In electronics box in plenum chamber
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, fuse holder, up to July 2004 Note:
From fuse number 23 upwards the fuses in the fuse holder are designated as 223 in the Current Flow Diagram
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 15 11 - S11 - Fuse in relay plate fuse holder 10 A - J234 - Airbag control unit 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 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 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 15 32 - S232 - Fuse on fuse holder 20 A - J583 - NOx sensor control unit 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 30 41 - S241 - Fuse on fuse holder 30 A - J364 - Auxiliary heater control unit 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 15 44 - S244 - Fuse on fuse holder 30 A - E87 - Operating and display unit for air conditioning system/Climatronic 30
AUDI A4 2003 Position of fuses, fuse holder, from August 2004 Note:
From fuse number 23 upwards the fuses in the fuse holder are designated as 223 in the Current Flow Diagram
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 15 11 - S11 - Fuse in relay plate fuse holder 10 A - J234 - Airbag control unit 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 15 17 - S17 - Fuse in relay plate fuse holder 10 A - G397 - Rain and light detector sensor 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 15 32 - S232 - Fuse on fuse holder 15 A - U10-Trailer socket ²) 75x 33 - S233 - Fuse on fuse holder 15 A - U1 - Cigarette lighter 30 34 - S234 - Fuse on fuse holder 30 A - U5 - 12 V socket 30 35 - S235 - Fuse on fuse holder 30 A - U - socket 30 36 - S236 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit 75x 37 - S237 - Fuse on fuse holder 30 A - J519 - Onboard power supply control unit 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
1 - Taxi meter and alarm system fuse -S183-
2 - Alarm system fuse -S57-
3 - Taxi meter fuse -S182-
9 - Two-way radio fuse -S55-
10 - Socket 1 fuse -S184-
¹) applicable from model year 2006
AUDI A4 2003 Position of fuses, fuse holder for special vehicle - police 1 - Special vehicle fuse 1 -S291-
2 - Special vehicle fuse 2 -S292-
3 - Special vehicle fuse 3 -S293-
4 - Special vehicle fuse 4 -S294-
5 - Special vehicle fuse 5 -S295-
6 - Special vehicle fuse 6 -S296-
7 - Special vehicle fuse 7 -S297-
8 - Special vehicle fuse 8 -S298-
¹) applicable from February 2005
²) applicable from model year 2006
AUDI A4 2003 Control units overview
Audi A4 Fitting Locations No. 804 / 2
q Location for navigation system RNS-E
Audi A4 Fitting Locations No. 804 / 3
Diesel direct injection system control unit -J248-
17 - Automatic gearbox control unit -J217-
q for models with multitronic® only
AUDI A4 2003 Motronic control unit -J220-, diesel direct injection system control unit -J248-, Simos control unit -J361- On electronics box in plenum chamber
AUDI A4 2003 Automatic gearbox control unit -J217- not for models with multitronic®
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- AUDI A4 2003 Fresh air blower control unit -J126- AUDI A4 2003 Headlight range control, control unit -J431- AUDI A4 2003 Steering column electronics control unit -J527- AUDI A4 2003 Display control unit in dash panel insert -J285- In the dash panel behind the display unit
AUDI A4 2003 Airbag control unit -J234- AUDI A4 2003 Onboard power supply control unit -J519- Behind driver's storage compartment
AUDI A4 2003 Trailer detector control unit -J345- AUDI A4 2003 Parking aid control unit -J446- In left luggage compartment, behind side trim, on apron
AUDI A4 2003 Navigation operating electronics control unit -J402- for navigation system RNS-D only
AUDI A4 2003 Radio -R-
not for navigation system
AUDI A4 2003 Navigation system with CD drive control unit -J401- For navigation system NS-Low only
For navigation system RNS-E only
AUDI A4 2003 Control unit with display for radio and navigation system -J503- for navigation system RNS-Low only
AUDI A4 2003 CD changer -R41-
AUDI A4 2003 Telephone and telematics control unit, telematics -J526- For models with telematics only
in electronics box under front passenger seat
AUDI A4 2003 Language input control unit -J507-
For models with telematics only
in electronics box under front passenger seat
AUDI A4 2003 Convenience system central control unit -J393- AUDI A4 2003 Driver door control unit -J386- AUDI A4 2003 Front passenger side door control unit -J387- In window regulator motor integrated
AUDI A4 2003 Overview of relay 2 -
q Components: -J4-, -J9-, -J17-, -J53-, -J59-, -J236-, -J569-, -J695-
q Location up to July 2004
q Location from August 2004
q Location component -J569- for engine code BNS
q Location component -J17- for some engine variants ⇒ Item , page
4 -
q Components: -J85-, -J182-, -J330-, -J408-, -J430-, -J461-, -J462-, -J463-, -J608-
Audi A4 Fitting Locations No. 803 / 2
q Components: -J17-, -J52-, -J151-, -J179-, -J207-, -J271-, -J299-, -J317-, -J363-, -J434-, -J496-, -J569-, -J757-
q Location for petrol engines, up to July 2004
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
Audi A4 Fitting Locations No. 803 / 3
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
1 - Special vehicle control unit (driving school vehicle, taxi) -J608-
2 - Low heat output relay -J359-
3 - High heat output relay -J360-
AUDI A4 2003 Position of relays, relay carrier (9-pin) with onboard supply control unit, up to July 2004 Driver side dash panel, behind the relay carrier (3-pin)
1 - Fuel pump relay -J17-
2 - Servotronic control unit -J236-
3 - Dual tone horn relay -J4-
4 - Brake servo relay -J569-
5 - Special vehicle control unit (driving school vehicle, taxi) -J608-
6 - X-contact relief relay -J59-
AUDI A4 2003 Position of relays, relay carrier (9-pin) with onboard supply control unit, from August 2004 Driver side dash panel, behind the relay carrier (3-pin)
1 - Fuel pump relay -J17-
2 - Servotronic control unit -J236-
3 - Starter motor relay 2 ¹) -J695-
4 - Starter motor relay ¹) -J53-
- Brake servo relay ²), ³) -J569-
5 - Heated rear window relay -J9-
6 - X-contact relief relay -J59-
8 - Dual tone horn relay -J4-
¹) for engine codes AUK, BKH, BNS only
²) not for engine codes AUK, BKH
³) applicable up to model year 2005
⁴) applicable from model year 2006
AUDI A4 2003 Position of relays, relay carrier (4-pin) with screw connection 3 - Engine power reduction relay 1 (driving school vehicle) -J662-
4 - Engine power reduction relay 2 (driving school vehicle) -J663-
- Alarm on and hands-free system control unit (taxi) -J610-
AUDI A4 2003 Position of relays, relay carrier (4-pin), petrol engines, up to July 2004 In electronics box in plenum chamber
1 - Automatic gearbox relay (multitronic) -J60-
1.1 - Continued coolant circulation relay (V6) -J151-
2 - Secondary air pump relay -J299-
3 - Motronic current supply relay -J271-
- Turbocharger coolant pump control unit -J155-
- Current supply relay for Simos control unit -J363-
4 - Automatic gearbox relay (AG5) -J60-
- Starter inhibitor and reversing light relay (multitronic/AG6) -J226-
- Starter inhibitor relay, clutch pedal switch -J434-
4.1 ¹) - Automatic gearbox relay (AG5) -J60-
- Starter inhibitor relay -J433-
- Starter inhibitor relay, clutch pedal switch -J434-
4.2 ¹) - Reversing light relay
¹) applicable from model year 2004
AUDI A4 2003 Position of relays, relay carrier (4-pin), diesel engines, up to July 2004 In electronics box in plenum chamber
1.2 - Fuel pump relay -J17-
2³) - Terminal 30 voltage supply relay -J317-
2 ⁴) - Glow plug relay -J52-
3 ³) - Automatic glow period control unit -J179-
3 ⁴) - Terminal 30 voltage supply relay -J317-
4 - Starter inhibitor and reversing light relay -J226-
- Automatic gearbox relay -J60-
4.1 - Automatic gearbox relay -J60-
E - Fan for control unit -V274-
¹) applicable from model year 2002
²) applicable from model year 2004
³) for models with engine code BKE only
⁴) not for models with engine code BKE
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004 1.1 - Fuel pump relay -J17-
1.2 - Starter inhibitor relay -J207-
2 - Terminal 30 voltage supply relay -J317-
3 - Automatic glow period control unit -J179-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004 In electronics box in plenum chamber
1.1 - Fuel pump relay -J17-
1.2 - Starter inhibitor relay -J207-
2 - Terminal 30 voltage supply relay -J317-
3 - Automatic glow period control unit -J179-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004 In electronics box in plenum chamber
1.2 - Starter inhibitor relay -J217-
2 - Motronic current supply relay -J271-
3 - Engine component current supply relay -J757-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine code ALZ, from August 2004 In electronics box in plenum chamber
2 - Current supply relay for Simos control unit -J363-
3 - Secondary air pump relay -J299-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine code ALT, from August 2004 In electronics box in plenum chamber
2 - Motronic current supply relay -J271-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine code BDG, from August 2004 In electronics box in plenum chamber
1.1 - Fuel pump relay -J17-
1.2 - Starter inhibitor relay -J207-
2 - Terminal 30 voltage supply relay -J317-
3 - Glow plug relay -J52-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004 In electronics box in plenum chamber
1.1 - Continued coolant circulation relay -J151-
1.2 - Starter inhibitor relay -J207-
- Starter inhibitor relay, clutch pedal switch ¹) -J434-
2 - Motronic current supply relay -J271-
3 - Secondary air pump relay -J299-
¹) For engine codes BBK, BHF only
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine code AWA, from August 2004 In electronics box in plenum chamber
1.2 - Starter inhibitor relay -J207-
2 - Motronic current supply relay -J271-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine codes AUK, BKH, from August 2004 In electronics box in plenum chamber
1.1 - Additional coolant pump relay -J496-
2 - Motronic current supply relay -J271-
3 - Engine component current supply relay -J757-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine code BNS, from August 2004 In electronics box in plenum chamber
1.1 - Continued coolant circulation relay -J151-
1.2 - Brake servo relay -J569-
2 - Motronic current supply relay -J271-
3 - Engine component current supply relay -J757-
4 - Secondary air pump relay -J299-
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004 In electronics box in plenum chamber
1.1 - Continued coolant circulation relay ¹) -J151-
1.2 - Starter inhibitor relay ¹) -J207-
2 - Motronic current supply relay ¹) -J271-
3 - Secondary air pump relay ¹) -J299-
¹) for models with manual gearbox or with automatic gearbox (multitronic) only
AUDI A4 2003 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004 In electronics box in plenum chamber
1.1 - Continued coolant circulation relay ¹) -J151-
1.2 - Starter inhibitor relay ¹) -J207-
2 - Motronic current supply relay ¹) -J271-
3 - Secondary air pump relay ¹) -J299-
¹) for models with automatic gearbox (AG5) only
AUDI A4 2003 Position of relays, relay carrier for special vehicles 1 - Alarm system relay 2, main beam -J461-
2 - Taxi alarm system 2 control unit -J430-
3 - Alarm system control unit -J85-
4 - Alarm system control unit -J85-
5 - Alarm system relay 4, right turn signal -J463-
6 - Alarm system relay 3, left turn signal -J462-
1 - Main beam relay -J330-
2 - Special vehicle control unit -J608-
3 - Siren system relay -J408-
4 - Siren system relay -J408-
5 - Flasher relay for headlight main beam alarm system -J182-
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