AUDI A4 2001 — Body electrical — Lowline . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2001 - Earth connections

T4k	4-pin connector, black, near front bumper
3	Earth strap, engine - body
12	Earth point, in engine compartment, left
26	Earth point, on front apron
44	Earth point, lower part of left A pillar
50	Earth point, luggage compartment, left
78	Earth point, lower part of right B pillar
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
347	Earth connection, in roof wiring harness

Wiring Diagram AUDI A4 2001 - Tail lights

T10	10-pin connector, black, connector point, electronics box, plenum chamber
T10c	10-pin connector, purple, connector point, A pillar, left
32	Earth point, behind dash panel, left
33	Earth point, behind dash panel, right
43	Earth point, lower part of right A pillar
44	Earth point, lower part of left A pillar
49	Earth point, near convenience system central control unit
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
199	Earth connection -3-, in dash panel wiring harness
238	Earth connection -1-, in interior wiring harness
261	Earth connection, in heated washer jet wiring harness

Wiring Diagram AUDI A4 2001 - Earth connections

A	Battery
B	Starter
D	Ignition/starter switch
E87	Control and display unit for air conditioner/Climatronic
S88	Strip fuse (main fuse)
T1	Single connector, black, engine compartment, right
T10a	10-pin connector, brown, connector point, electronics box, plenum chamber
11	Earth point, in battery box
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
A41	Positive (+) connection (50), in dash panel wiring harness
*	For 1.8 litre and 2.0 litre engine: connector T1d

Wiring Diagram AUDI A4 2001 - Hazard warning lights button - dual tone horn - onboard power supply control unit

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 2001 - Earth connections

E2	Turn signal switch
E22	Intermittent wiper switch
G85	Steering angle sender
H	Horn plate
J527	Steering column electronics control unit

Wiring Diagram AUDI A4 2001 - X contact relief relay - onboard power supply control unit

J519	Onboard power supply control unit
J527	Steering column electronics control unit
T1a	Single connector, black, connector point, A pillar, 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
V11	Headlight washer system pump
44	Earth point, lower part of left A pillar
135	Earth connection -2-, in dash panel wiring harness
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
*	Protected via fuse S237, only applies to models with headlight washer system

Wiring Diagram AUDI A4 2001 - Ignition/starter switch - main fuse

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

Wiring Diagram AUDI A4 2001 - Ashtray illumination - cigarette lighter - fuses - radio connector III

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

Wiring Diagram AUDI A4 2001 - Steering column electronics control unit - cruise control system

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

Wiring Diagram AUDI A4 2001 - Glove box light - footwell lights - heated rear window

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 tailgate/boot 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

Wiring Diagram AUDI A4 2001 - Turn signal switch - intermittent wiper switch - steering angle sender - horn plate - steering column electronics 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
T17a	17-pin connector, red, connector point, A pillar, left
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
E112	Connection (horn-87h), in dash panel wiring harness
X66	Connection (horn), in front bumper wiring harness

Wiring Diagram AUDI A4 2001 - Fuses - socket - heated washer jets - reversing light switch

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
T10b	10-pin connector, black, on onboard power supply control unit
T32b	32-pin connector, grey, on onboard power supply control unit
A34	Connection (75x), in dash panel wiring harness
A57	Positive (+) connection -3- (30), in dash panel wiring harness
*	Fuse rating increased from 20 A to 30 A.
**	Protected via fuse S237, only applies to models with headlight washer system

Wiring Diagram AUDI A4 2001 - Onboard power supply control unit - steering column electronics control unit - windscreen wiper motor - washer pump - headlight washer system pump

L15	Ashtray light bulb
L28	Cigarette lighter light bulb
S12	Fuse in fuse box/relay plate
S13	Fuse in fuse box/relay plate
S14	Fuse in fuse box/relay plate
S15	Fuse in fuse box/relay plate
S233	Fuse in fuse box
S239	Fuse in fuse box
S240	Fuse in fuse box
T8	8-pin connector, black, radio connector III
U1	Cigarette lighter
135	Earth connection -2-, in dash panel wiring harness
238	Earth connection -1-, in interior wiring harness
610	Earth point (audio), below centre console, front
A46	Positive (+) connection (30 - from radio), in dash panel wiring harness
A50	Positive (+) connection (30as), in dash panel wiring harness
A57	Positive (+) connection -3- (30), in dash panel wiring harness
A129	Connection (muting), in dash panel wiring harness

Wiring Diagram AUDI A4 2001 - Control unit with display in dash panel insert

E26	Glove box light switch
E87	Air conditioning system/Climatronic operating and display unit
J393	Convenience system central control unit
S2	Fuse in fuse box/relay plate
S226	Fuse in fuse box
T12d	12-pin connector, brown, near glove box
W6	Glove box light
W9	Left footwell light
W10	Right footwell light
Z1	Heated rear window
238	Earth connection -1-, in interior wiring harness
654	Earth point, right D pillar
A29	Connection (interior light), in dash panel wiring harness
B180	Connection (heated rear window), in interior wiring harness

Wiring Diagram AUDI A4 2001 - Lighting switch - headlight range control adjuster - onboard power supply control unit

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 2001 - Control unit with display in dash panel insert

D2	Immobilizer reading coil
F38	Ambient temperature switch
F66	Coolant shortage indicator switch
F77	Windscreen washer fluid warning contact
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
T17	17-pin connector, black, connector point, A pillar, left
T32	32-pin connector, blue, on dash panel insert
83	Earth connection -1-, in front right wiring harness
135	Earth connection -2-, in dash panel wiring harness
269	Earth connection (sender earth) -1-, in dash panel wiring harness
*	Only models with quattro four-wheel drive

Wiring Diagram AUDI A4 2001 - Left headlight - left fog light

C	Alternator
F1	Oil pressure switch
F34	Brake fluid level warning contact
G5	Rev. counter
G21	Speedometer
G22	Speedometer sender
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, in engine compartment, right
T10	10-pin connector, black, connector point, electronics box, plenum chamber
T10c	10-pin connector, violet, connector point left A-pillar
T17d	17-pin connector, red, connector point, electronics box, plenum chamber
T32a	32-pin connector, green, on dash panel insert
83	Earth connection -1-, in front right wiring harness
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 2001 - 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 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

Wiring Diagram AUDI A4 2001 - Brake lining/pad wear senders - control unit with display in dash panel insert - diagnostic connector

G34	Brake lining/pad wear sender, front left
G35	Brake lining/pad wear sender, front right
J104	ABS with EDL control unit
J285	Control unit with display in dash panel insert
T4n	4-pin connector, black, front left
T4o	4-pin connector, black, front right
T16	16-pin connector, black, diagnostic connector
T17b	17-pin connector, green, connector point left A-pillar
T32a	32-pin connector, green, on dash panel insert
135	Earth connection -2-, in dash panel wiring harness
179	Earth connection, in left headlight wiring harness
A76	Connection (diagnosis wire K), in dash panel wiring harness

AUDI A4 2001

AUDI A4 2001 Overview of earth points in engine compartment

Overview of earth points in engine compartment    

1 -	Earth point, in battery box -11-

q	Location ⇒ page → 801/6

2 -	Earth point, starter battery -624-

q	Location → page 801/11

3 -	Earth point, on left in engine compartment -12-

q	not for 2,0 l engine FSI, not for 2,5 l engine TDI, location → page 801/6

q	only for 2.0 l FSI motor, location → page 801/7

q	only for 2,5 l engine TDI, location → page 801/7

4 -	Earth point, on front apron -26-

q	Location → page 801/10

5 -	Earth point, near coil -19-

q	Location → page 801/10

6 -	Earth point, on engine block -18-

q	only for 1.8 l engine, location → page 801/8

q	only for 2.0 l FSI motor, location → page 801/9

q	only for 3.0 l engine, location → page 801/9

Audi A4	Fitting Locations	No.  801 / 2

Overview of earth points in vehicle interior

1 -	Earth point, lower part of right A-pillar -43-

q	Location → page 801/13

2 -	Earth point, on right behind dash panel -33-

q	Location → page 801/12

3 -	Earth point (audio), under centre console, front -610-

q	Location → page 801/15

4 -	Earth point, lower part of right B-pillar -78-

q	Location → page 801/15

5 -	Earth point, lower part of left B-pillar -77-

q	Location → page 801/14

6 -	Earth point, near convenience system central control unit -49-

q	Location → page 801/14

Audi A4	Fitting Locations	No.  801 / 3

7 -	Earth point, lower part of left A-pillar -44-

q	Location → page 801/13

8 -	Earth point, on left behind dash panel -32-

q	Location → page 801/12

Audi A4	Fitting Locations	No.  801 / 4

Overview of earth points in luggage compartment - saloon models   Note: ♦ Overview of luggage compartment - Avant models → Page 801/5

1 -	Earth point, right D-pillar -654-

q	Location → page 801/17

2 -	Earth point in luggage compartment -701-

q	Location → page 801/17

3 -	Earth point, left D-pillar -653-

q	Location → page 801/16

4 -	Earth point, on left in luggage compartment -50-

q	Location → page 801/16

Audi A4	Fitting Locations	No.  801 / 5

Overview of earth points in luggage compartment - Avant models

1 -	Earth point, right D-pillar -654-

q	Location → page 801/20

2 -	Earth point, on right in rear lid -53-

q	Location → page 801/19

3 -	Earth point, left D-pillar -653-

q	Location → page 801/20

4 -	Earth point, on left in rear lid -52-

q	Location → page 801/19

5 -	Earth point, on left in luggage compartment -50-

q	Location → page 801/18

Audi A4	Fitting Locations	No.  801 / 6

AUDI A4 2001 Earth point, in engine compartment Earth point, in engine compartment    11 Earth point, in battery box -arrow-

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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

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Audi A4	Fitting Locations	No.  801 / 7

12 Earth point, in engine compartment, left -arrow- on bulkhead Torque: 9 Nm

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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

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Audi A4	Fitting Locations	No.  801 / 8

18 Earth point on engine block -arrow- Torque: 8 Nm

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only for 1.8 l engine    18 Earth point on engine block -arrow- Torque: 8 Nm only for 2.0 l engine

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Audi A4	Fitting Locations	No.  801 / 9

18 Earth point on engine block -arrow- Torque: 9 Nm

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only for 2,0 l engine FSI    18 Earth point on engine block -arrow- Torque: 8 Nm only for 3.0 l engine

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Audi A4	Fitting Locations	No.  801 / 10

19 Earth point, near coil -arrow- Torque: 8 Nm

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only for 4.2 l engine    26 Earth point, on front apron -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 11

624 Earth point, starter battery -arrow- Torque: 7.5 Nm

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Audi A4	Fitting Locations	No.  801 / 12

AUDI A4 2001 Earth points, in interior Earth points, in interior    32 Earth point behind dash panel on left -arrow-

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Torque: 9 Nm    33 Earth point behind dash panel on right -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 13

43 Earth point, lower part of right A-pillar -arrow-

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Torque: 9 Nm    44 Earth point, lower part of left A-pillar -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 14

49 Earth point, near convenience system central control unit -arrow-

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Torque: 9 Nm    77 Earth point, lower part of left B-pillar -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 15

78 Earth point, lower part of right B-pillar -arrow-

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Torque: 9 Nm    610 Earth point (audio), under centre console, front -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 16

AUDI A4 2001 Earth point, in luggage compartment - saloon models Earth point, in luggage compartment - saloon models    50 Earth point, on left in luggage compartment -arrow-

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Torque: 9 Nm    653 Earth point, left D-pillar -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 17

654 Earth point, right D-pillar -arrow-

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Torque: 9 Nm    701 Earth point, in luggage compartment -arrow- Torque: 20 Nm

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Audi A4	Fitting Locations	No.  801 / 18

Earth point, in luggage compartment - Avant models    50 Earth point, on left in luggage compartment -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 19

52 Earth point, on left in rear lid -arrow-

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Torque: 9 Nm    53 Earth point, on right in rear lid -arrow- Torque: 9 Nm

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Audi A4	Fitting Locations	No.  801 / 20

653 Earth point, left D-pillar -arrow-

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Torque: 9 Nm    654 Earth point, right D-pillar -arrow- Torque: 9 Nm

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AUDI A4 2001 Overview of fuses

Overview of fuses    

1 -	Main fuse: Strip fuse -S88-

q	Location → page 802/5

2 -	Coupling station of A-pillar

q	Components: -S46-

q	Location → page 802/6

3 -	Relay carrier (3-pin)

q	Components: -S126-, -S328-

q	Location → page 802/7

4 -	Relay carrier (9-pin) with onboard supply control unit

q	Components: -S37-, -S45-, -S87-, -S100-, -S184-, -S280-

q	Location → page 802/8

5 -	Relay carrier (4-pin) with screw connection

q	Components: -S42-, -S51-, -S123-, -S214-

q	Location up to July 2004 → page 802/9

q	Location from August 2004 → page 802/10

Audi A4	Fitting Locations	No.  802 / 2

6 -	Fuse holder

q	Components: -S1- up to -S22- and -S223- up to -S244-

q	Location up to July 2004 → page 802/25

q	Location from August 2004 → page 802/32

7 -	Fuse holder for special vehicles

q	Components: -S55-, -S57-, -S182-, -S183-, -S184-, -S291-, -S292-, -S293-, S294-, -S295-, -S296-, -S297-, -S298-

q	Location taxi → page 802/38

q	Location police → page 802/39

Audi A4	Fitting Locations	No.  802 / 3

8 -	Relay carrier (4-pin)

q	Components: -S23-, -S39-, -S73-, -S102-, -S116-, -S130-, -S131-, -S189-, -S282-, -S283-, -S286-, -S344-, -S345-

q	Location for petrol engines, up to July 2004 → page 802/11

q	Location for diesel engines, up to July 2004 → page 802/12

q	Location for engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD → page 802/13

q	Location for engine codes BSG, BPP, BTP, BKN, ASB → page 802/14

q	Location for engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK → page 802/15

q	Location for engine code ALZ → page 802/16

q	Location for engine code ALT → page 802/17

q	Location for engine code BDG → page 802/18

q	Location for engine codes BFB, BBK, BHF → page 802/19

q	Location for engine code AWA → page 802/20

Audi A4	Fitting Locations	No.  802 / 4

t	Location for engine codes AUK, BKH → page 802/21

t	Location for engine code BNS → page 802/22

t	Location for engine code BBJ, with manual gearbox or multitronic → page 802/23

t	Location for engine code BBJ with AG5 → page 802/24

Audi A4	Fitting Locations	No.  802 / 5

Main fuse

Location: On the battery S88 -  Strip fuse

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Audi A4	Fitting Locations	No.  802 / 6

AUDI A4 2001 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)

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Audi A4	Fitting Locations	No.  802 / 7

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 8

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 9

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 10

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 11

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 12

AUDI A4 2001 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.

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Audi A4	Fitting Locations	No.  802 / 13

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 14

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 15

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 16

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 17

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 18

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 19

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 20

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 21

AUDI A4 2001 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-

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Audi A4	Fitting Locations	No.  802 / 22

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 23

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 24

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 25

AUDI A4 2001 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

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Audi A4	Fitting Locations	No.  802 / 26

Position of fuses, up to July 2004:

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	S1 - Fuse in relay plate fuse holder	10 A	-	J255 - Climatronic control unit	30
2	-	S2 - Fuse in relay plate fuse holder	5 A	-	W9 - Left footwell light W10 - Right footwell light W45 - Rear left footwell light W46 - Rear right footwell light	30
3	-	S3 - Fuse in relay plate fuse holder	5 A	-	Z20 - Left washer jet heater element Z21 - Right washer jet heater element	75x
4	-	S4 - Fuse in relay plate fuse holder	5 A	-	J293 - Radiator fan control unit J671 - Radiator fan control unit 2	87
5	-	S5 - Fuse in relay plate fuse holder	10 A	-	E128 - Heated rear left seat switch with regulator E129 - Heated rear right seat switch with regulator F189 - Tiptronic switch G226 - Oil level and oil temperature sender	15
6	-	S6 - Fuse in relay plate fuse holder	5 A	-	G65 - High-pressure sender G238 - Air quality sensor	15
7	-	S7 - Fuse in relay plate fuse holder	10 A	-	E132 - Traction control system switch F36 - Clutch pedal switch F47 - Brake pedal switch J104 - ABS control unit	15
8	-	S8 - Fuse in relay plate fuse holder	5 A	-	R36 - Telephone transmitter and receiver unit R86 - Aerial amplifier for mobile telephone	30
9	-	S9 - Fuse in relay plate fuse holder	15 A	-	J569 - Brake servo relay	30

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 / 28

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
19	-	S19 - Fuse in relay plate fuse holder	15 A	-	E1 - Lighting switch	75x
20	-	S20 - Fuse in relay plate fuse holder	15 A	-	J85 - Alarm system control unit J344 - Right gas discharge light control unit M31 - Right headlight dipped beam bulb V49 - Right headlight range control motor	56
21	-	S21 - Fuse in relay plate fuse holder	15 A	-	J85 - Alarm system control unit J343 - Left gas discharge light control unit J519 - Onboard power supply control unit M29 - Left headlight dipped beam bulb V48 - Left headlight range control motor	56
22	-	S22 - Fuse in relay plate fuse holder	15 A	-	J386 - Driver door control unit J387 - Front passenger side door control unit	30
23	-	S223 - Fuse on fuse holder	15 A	-	J388 - Rear left door control unit J389 - Rear right door control unit	30
24	-	S224 - Fuse on fuse holder	20 A	-	J393 - Convenience system central control unit	30
25	-	S225 - Fuse on fuse holder	30 A	-	J126 - Fresh air blower control unit	30
26	-	S226 - Fuse on fuse holder	30 A	-	E87 - Operating and display unit for air conditioning system/Climatronic	30
27	-	S227 - Fuse on fuse holder	30 A	-	J345 - Trailer detector control unit	30
28	-	S228 - Fuse on fuse holder	20 A	-	G6 - Fuel system pressurisation pump	87

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 / 30

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
34	-	S234 - Fuse on fuse holder	20 A	-	G70 - Air mass meter J299 - Secondary air pump relay N80 - Activated charcoal filter system solenoid valve 1 N112 - Secondary air inlet valve N144 - Left electrohydraulic engine mounting solenoid valve N145 - Right electrohydraulic engine mounting solenoid valve N156 - Variable intake manifold change-over valve N220 - Exhaust flap valve N276 - Fuel pressure regulating valve Z19 - Lambda probe heater Z28 - Lambda probe 2 heater Z29 - Lambda probe 1 heater after catalytic converter Z30 - Lambda probe 2 heater after catalytic converter V144 - Fuel system diagnostic pump	87
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 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
38	-	S238 - Fuse on fuse holder	15 A	-	G303 - Interior monitor send and receive module 1 H12 - Alarm horn J393 - Convenience system central control unit	30
39	-	S239 - Fuse on fuse holder	20 A	-	J402 - Navigation operating electronics control unit R - Radio R12 - Amplifier T8 - 8-connector, black, radio connector III	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	Fitting Locations	No.  802 / 32

AUDI A4 2001 Position of fuses, fuse holder, from August 2004 Position of fuses, fuse holder, from August 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

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Audi A4	Fitting Locations	No.  802 / 33

Fuse location from August 2004:

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	S1 - Fuse in relay plate fuse holder	10 A	-	J255 - Climatronic control unit	30
2	-	S2 - Fuse in relay plate fuse holder	5 A	-	W9 - Left footwell light W10 - Right footwell light W45 - Rear left footwell light W46 - Rear right footwell light	30
3	-	S3 - Fuse in relay plate fuse holder	5 A	-	Z20 - Left washer jet heater element Z21 - Right washer jet heater element	75x
4	-	S4 - Fuse in relay plate fuse holder	5 A	-	J293 - Radiator fan control unit J671 - Radiator fan control unit 2	87
5	-	S5 - Fuse in relay plate fuse holder	10 A	-	E149 - Rear roller blind switch E272 - Function selection switch 2 F189 - Tiptronic switch G226 - Oil level and oil temperature sender J262 - Rear roller blind control unit J401 - Navigation system with CD drive control unit J446 - Parking aid control unit	15
6	-	S6 - Fuse in relay plate fuse holder	5 A	-	G65 - High-pressure sender G238 - Air quality sensor	15
7	-	S7 - Fuse in relay plate fuse holder	10 A	-	E132 - Traction control system switch F36 - Clutch pedal switch F47 - Brake pedal switch J104 - ABS control unit	15
8	-	S8 - Fuse in relay plate fuse holder	5 A	-	R36 - Telephone transmitter and receiver unit R86 - Aerial amplifier for mobile telephone	30
9	-	S9 - Fuse in relay plate fuse holder	15 A	-	J569 - Brake servo relay	30

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 / 35

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
19	-	S19 - Fuse in relay plate fuse holder	15 A	-	L22 - Left fog light bulb L23 - Right fog light bulb	55
20	-	S20 - Fuse in relay plate fuse holder		-	Vacant
21	-	S21 - Fuse in relay plate fuse holder		-	Vacant
22	-	S22 - Fuse in relay plate fuse holder	15 A	-	J386 - Driver door control unit J387 - Front passenger side door control unit	30
23	-	S223 - Fuse on fuse holder	15 A	-	J388 - Rear left door control unit J389 - Rear right door control unit	30
24	-	S224 - Fuse on fuse holder	20 A	-	J393 - Convenience system central control unit	30
25	-	S225 - Fuse on fuse holder	30 A	-	J126 - Fresh air blower control unit	30
26	-	S226 - Fuse on fuse holder	30 A	-	J9 - Heated rear window relay	30
27	-	S227 - Fuse on fuse holder	30 A	-	J345 - Trailer detector control unit	30
28	-	S228 - Fuse on fuse holder	20 A 30 A	-	G6 - Fuel system pressurisation pump J538 - Fuel pump control unit G6 - Fuel system pressurisation pump ¹) J538 - Fuel pump control unit ¹)	87

Note: ¹) for models with engine code BNS only

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 / 37

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
38	-	S238 - Fuse on fuse holder	15 A	-	G303 - Interior monitor send and receive module 1 H12 - Alarm horn J393 - Convenience system central control unit	30
39	-	S239 - Fuse on fuse holder	20 A	-	J401 - Navigation system with CD drive control unit J503 - Control unit with display for radio and navigation system T8 - 8-connector, black, radio connector III R - Radio R12 - Amplifier R146 - Satellite radio	30
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	-	G70 - Air mass meter G212 - Exhaust gas recirculation potentiometer J363 - Current supply relay for Simos control unit J623 - Engine control unit J757 - Engine component current supply relay N18 - Exhaust gas recirculation valve	15
44	-	S244 - Fuse on fuse holder	30 A 35 A	-	J255 - Climatronic control unit ¹) J255 - Climatronic control unit ²)	30

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

Audi A4	Fitting Locations	No.  802 / 38

AUDI A4 2001 Position of fuses, fuse holder for special vehicle - taxi Position of fuses, fuse holder for special vehicle - taxi

Location: Driver side dash panel Fuse location 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

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Audi A4	Fitting Locations	No.  802 / 39

AUDI A4 2001 Position of fuses, fuse holder for special vehicle - police Position of fuses, fuse holder for special vehicle - police

Location: Driver side dash panel Fuse location 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

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AUDI A4 2001 Control units overview

Control units overview    

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

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

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 2001 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 2001 Automatic gearbox control unit -J217- Automatic gearbox control unit -J217- not for models with multitronic® Location:

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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 2001 ABS control unit -J104- ABS control unit -J104-

Location: In engine compartment, on front left hydraulic unit AUDI A4 2001 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 2001 Fresh air blower control unit -J126- Fresh air blower control unit -J126-

Location: Behind the glove box, in fresh air blower AUDI A4 2001 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 2001 Steering column electronics control unit -J527- Steering column electronics control unit -J527-

Location: On steering column AUDI A4 2001 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 2001 Airbag control unit -J234- Airbag control unit -J234-

Location: On centre tunnel, under handbrake lever AUDI A4 2001 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 2001 Trailer detector control unit -J345- Trailer detector control unit -J345-

Location: In left luggage compartment, behind side trim AUDI A4 2001 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 2001 Navigation operating electronics control unit -J402- Navigation operating electronics control unit -J402- for navigation system RNS-D only Location: in centre console

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AUDI A4 2001 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 2001 Navigation system with CD drive control unit -J401- Navigation system with CD drive control unit -J401- For navigation system NS-Low only Location:

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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 2001 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 2001 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 2001 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

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AUDI A4 2001 Language input control unit -J507- Language input control unit -J507- For models with telematics only Location: in electronics box under front passenger seat

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Audi A4	Fitting Locations	No.  804 / 15

AUDI A4 2001 Convenience system central control unit -J393- Convenience system central control unit -J393-

Location: on sill, front left

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Audi A4	Fitting Locations	No.  804 / 16

AUDI A4 2001 Driver door control unit -J386- Driver door control unit -J386-

Location: In window regulator motor integrated AUDI A4 2001 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 2001 Overview of relay

Overview of relay    

1 -	Relay carrier (3-pin)

q	Components: -J359-, -J360-, -J608-

q	Location → page 803/4

2 -	Relay carrier (9-pin) with onboard supply control unit

q	Components: -J4-, -J9-, -J17-, -J53-, -J59-, -J236-, -J569-, -J695-

q	Location up to July 2004 → page 803/5

q	Location from August 2004 → page 803/6

q	Location component -J569- for engine code BNS → page 803/19

q	Location component -J17- for some engine variants ⇒ Item → 5 , page → 803/2

3 -	Relay carrier (4-pin) with screw connection

q	Components: -J662-, -J663-, -J610-

q	Location → page 803/7

4 -	Relay carrier for special vehicles

q	Components: -J85-, -J182-, -J330-, -J408-, -J430-, -J461-, -J462-, -J463-, -J608-

q	Location → page 803/22

Audi A4	Fitting Locations	No.  803 / 2

5 -	Relay carrier (4-pin)

q	Components: -J17-, -J52-, -J151-, -J179-, -J207-, -J271-, -J299-, -J317-, -J363-, -J434-, -J496-, -J569-, -J757-

q	Location for petrol engines, up to July 2004 → page 803/8

q	Location for diesel engines, up to July 2004 → page 803/9

q	Location for engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD → page 803/10

q	Location for engine codes BSG, BPP, BTP, BKN, ASB → page 803/11

q	Location for engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK → page 803/12

q	Location for engine code ALZ → page 803/13

q	Location for engine code ALT → page 803/14

q	Location for engine code BDG → page 803/15

q	Location for engine codes BFB, BBK, BHF → page 803/16

q	Location for engine code AWA → page 803/17

Audi A4	Fitting Locations	No.  803 / 3

t	Location for engine codes AUK, BKH → page 803/18

t	Location for engine code BNS → page 803/19

t	Location for engine code BBJ, with manual gearbox or multitronic → page 803/20

t	Location for engine code BBJ with AG5 → page 803/21

Audi A4	Fitting Locations	No.  803 / 4

Position of relays, relay carrier (3-pin)

Location: Driver side dash panel Position of relays: 1 -  Special vehicle control unit (driving school vehicle, taxi) -J608- 2 -  Low heat output relay -J359- 3 -  High heat output relay -J360-

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Audi A4	Fitting Locations	No.  803 / 5

AUDI A4 2001 Position of relays, relay carrier (9-pin) with onboard supply control unit, up to July 2004 Position of relays, relay carrier (9-pin) with onboard supply control unit, up to July 2004

Location: Driver side dash panel, behind the relay carrier (3-pin) Position of relays: 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-

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Audi A4	Fitting Locations	No.  803 / 6

AUDI A4 2001 Position of relays, relay carrier (9-pin) with onboard supply control unit, from August 2004 Position of relays, relay carrier (9-pin) with onboard supply control unit, from August 2004

Location: Driver side dash panel, behind the relay carrier (3-pin) Position of relays: 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

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Audi A4	Fitting Locations	No.  803 / 7

AUDI A4 2001 Position of relays, relay carrier (4-pin) with screw connection Position of relays, relay carrier (4-pin) with screw connection

Location: Driver side dash panel Position of relays: 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-

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Audi A4	Fitting Locations	No.  803 / 8

AUDI A4 2001 Position of relays, relay carrier (4-pin), petrol engines, up to July 2004 Position of relays, relay carrier (4-pin), petrol engines, up to July 2004

Location: In electronics box in plenum chamber Position of relays: 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

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Audi A4	Fitting Locations	No.  803 / 9

AUDI A4 2001 Position of relays, relay carrier (4-pin), diesel engines, up to July 2004 Position of relays, relay carrier (4-pin), diesel engines, up to July 2004

Location: In electronics box in plenum chamber Position of relays: 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

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Audi A4	Fitting Locations	No.  803 / 10

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine codes BKE, BRB, BNA, BLB, BRC, BPW, BVG, BVF, BRF, BRE, BVA, BRD, from August 2004 Position of relays, 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 Position of relays: 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-

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Audi A4	Fitting Locations	No.  803 / 11

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004 Position of relays, relay carrier (4-pin), engine codes BSG, BPP, BTP, BKN, ASB, from August 2004

Location: In electronics box in plenum chamber Position of relays: 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-

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Audi A4	Fitting Locations	No.  803 / 12

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004 Position of relays, relay carrier (4-pin), engine codes BGB, BPG, BWE, BWT, BUL, BPJ, BYK, from August 2004

Location: In electronics box in plenum chamber Position of relays: 1.2 -  Starter inhibitor relay -J217- 2 -  Motronic current supply relay -J271- 3 -  Engine component current supply relay -J757-

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Audi A4	Fitting Locations	No.  803 / 13

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine code ALZ, from August 2004 Position of relays, relay carrier (4-pin), engine code ALZ, from August 2004

Location: In electronics box in plenum chamber Position of relays: 2 -  Current supply relay for Simos control unit -J363- 3 -  Secondary air pump relay -J299-

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Audi A4	Fitting Locations	No.  803 / 14

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine code ALT, from August 2004 Position of relays, relay carrier (4-pin), engine code ALT, from August 2004

Location: In electronics box in plenum chamber Position of relays: 2 -  Motronic current supply relay -J271-

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Audi A4	Fitting Locations	No.  803 / 15

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine code BDG, from August 2004 Position of relays, relay carrier (4-pin), engine code BDG, from August 2004

Location: In electronics box in plenum chamber Position of relays: 1.1 -  Fuel pump relay -J17- 1.2 -  Starter inhibitor relay -J207- 2 -  Terminal 30 voltage supply relay -J317- 3 -  Glow plug relay -J52-

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Audi A4	Fitting Locations	No.  803 / 16

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004 Position of relays, relay carrier (4-pin), engine codes BFB, BBK, BHF, from August 2004

Location: In electronics box in plenum chamber Position of relays: 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

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Audi A4	Fitting Locations	No.  803 / 17

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine code AWA, from August 2004 Position of relays, relay carrier (4-pin), engine code AWA, from August 2004

Location: In electronics box in plenum chamber Position of relays: 1.2 -  Starter inhibitor relay -J207- 2 -  Motronic current supply relay -J271-

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Audi A4	Fitting Locations	No.  803 / 18

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine codes AUK, BKH, from August 2004 Position of relays, relay carrier (4-pin), engine codes AUK, BKH, from August 2004

Location: In electronics box in plenum chamber Position of relays: 1.1 -  Additional coolant pump relay -J496- 2 -  Motronic current supply relay -J271- 3 -  Engine component current supply relay -J757-

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Audi A4	Fitting Locations	No.  803 / 19

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine code BNS, from August 2004 Position of relays, relay carrier (4-pin), engine code BNS, from August 2004

Location: In electronics box in plenum chamber Position of relays: 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-

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Audi A4	Fitting Locations	No.  803 / 20

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004

Location: In electronics box in plenum chamber Position of relays: 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

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Audi A4	Fitting Locations	No.  803 / 21

AUDI A4 2001 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004 Position of relays, relay carrier (4-pin), engine code BBJ, from August 2004

Location: In electronics box in plenum chamber Position of relays: 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

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Audi A4	Fitting Locations	No.  803 / 22

AUDI A4 2001 Position of relays, relay carrier for special vehicles Position of relays, relay carrier for special vehicles

Location: Driver side dash panel Position of relays, taxi 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- Position of relays, police 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- 6 -  Vacant

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