AUDI A3 2002 – Body electrical . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2002 - Earth points - earth connections

10	Earth point, in plenum chamber
11	Earth point, in battery box
12	Earth point, on left in engine compartment
30	Earth point 1, next to relay plate
43	Earth point, lower part of right A-pillar
85	Earth connection 1, in engine compartment wiring harness
156	Earth connection, in diesel direct injection wiring harness
162	Earth connection, in blower motor wiring harness
277	Earth connection 3, in interior wiring harness
280	Earth connection, in communications wiring harness
285	Earth connection 7, in interior wiring harness
288	Earth connection (HRC), in dash panel wiring harness

Wiring Diagram AUDI A3 2002 - Earth connections - battery - main fuse box - alternator

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
J17	Fuel pump relay
S131	Fuse 1
S132	Fuse 2
S133	Fuse 3
S134	Fuse 4
S138	Fuse 5
S162	Fuse 1 (30) in fuse holder on battery
S163	Fuse 2 (30) in fuse holder on battery
S164	Fuse 3 (30) in fuse holder on battery
T2f	2-pin connector, alternator, in left engine compartment
T3e	3-pin connector, black, on main fuse box
T4b	4-pin connector, in left engine compartment
2	Earth strap, gearbox - body
12	Earth point, on left in engine compartment
45	Earth point, centre behind dash panel
50	Earth point, on left in luggage compartment
238	Earth connection 1, in interior wiring harness
255	Earth connection 1, in radio wiring harness
*	without air conditioning system
**	with air conditioning system

Wiring Diagram AUDI A3 2002 - Ignition/starter switch - X-contact relief relay - starter inhibitor and reversing light relay

D	Ignition/starter switch
J17	Fuel pump relay
J59	X-contact relief relay
J226	Starter inhibitor and reversing light relay
T6m	6-pin connector, brown, in plenum chamber
T10x	10-pin connector, orange, in plenum chamber
T14	14-pin connector, in left engine compartment
10	Earth point, in plenum chamber
281	Earth connection 1, in engine harness
A2	Positive connection (15), in dash panel wiring harness
B138	Positive connection (X), in interior wiring harness
B156	Positive connection (30a), in interior wiring harness
B239	Positive connection 1 (50), in interior wiring harness
*	for manual gearbox only
**	for automatic gearbox only
***	is dropped from November 2001
****	applicable from November 2001

Wiring Diagram AUDI A3 2002 - Light switch - left steering column switch

E1	Light switch
E2	Turn signal switch
E4	Headlight dipper/flasher switch
E18	Rear fog light switch
E19	Parking light switch
L9	Light switch illumination bulb
L40	Front and rear fog light switch illumination bulb
42	Earth point, next to steering column
249	Earth connection 2, in interior wiring harness
277	Earth connection 3, in interior wiring harness
A3	Positive connection (58), in dash panel wiring harness
A88	Connection (RFL), in dash panel wiring harness

Wiring Diagram AUDI A3 2002 - Illumination regulators - switches and instruments - windscreen washer/wiper system - headlight range control (not for headlight for gaseous discharge light)

E20	Switches and instruments illumination regulator
E102	Headlight range control regulator
J31	Automatic intermittent wash and wipe relay
L54	Headlight range control regulator illumination bulb
V	Windscreen wiper motor
V48	Left headlight range control motor
V49	Right headlight range control motor
249	Earth connection 2, in interior wiring harness
269	Earth connection (sender earth) 1, in dash panel wiring harness
280	Earth connection, in communications wiring harness
288	Earth connection (HRC), in dash panel wiring harness
A27	Connection (speed signal), in dash panel wiring harness
A103	Connection 2 (56), in dash panel wiring harness
A114	Connection (headlight range control), in dash panel wiring harness
*	not for 1.8 l - Turbo-Motronic 154 kW, 4 cylinder

Wiring Diagram AUDI A3 2002 - Right steering column switch - windscreen washer/wiper system - rear wiper

E22	Intermittent wiper switch
E34	Rear wiper switch
E38	Intermittent wiper regulator
J30	Rear window wiper and washer relay
J31	Automatic intermittent wash and wipe relay
T6d	6-pin connector, brown, behind steering column switch trim
T8g	8-pin connector, brown, on left in luggage compartment
V5	Washer pump
V12	Rear window wiper motor
50	Earth point, on left in luggage compartment
98	Earth connection, in rear lid wiring harness
249	Earth connection 2, in interior wiring harness
A97	Connection (53), in dash panel wiring harness
A102	Connection (windscreen wiper), in dash panel wiring harness

Wiring Diagram AUDI A3 2002 - Left tail light - left tail light - rear left turn signal - left brake light - left fog light bulb

F	Brake light switch
F4	Reversing light switch
J508	Brake light suppression relay
M4	Left tail light bulb
M6	Rear left turn signal bulb
M9	Left brake light bulb
M16	Left reversing light bulb
L46	Rear left fog light bulb
T5h	5-pin connector, brown, A-pillar left, near relay plate
T10x	10-pin connector, orange, in plenum chamber
238	Earth connection 1, in interior wiring harness
A87	Connection (RL), in dash panel wiring harness
B131	Connection (54), in interior wiring harness
B185	Connection 2 (54), in interior wiring harness
*	for models with anti-lock brake system (ABS) MK20
**	for models with anti-lock brake system (ABS) MK60 only
***	for manual gearbox only

Wiring Diagram AUDI A3 2002 - Right tail light - rear right turn signal - right brake light - right reversing light - high level brake light

J124	Rear bulb monitoring device
M2	Right tail light bulb
M8	Rear right turn signal bulb
M10	Right brake light bulb
M17	Right reversing light bulb
M25	High level brake light bulb
T5h	5-pin connector, brown, A-pillar left, near relay plate
T8g	8-pin connector, brown, on left in luggage compartment
98	Earth connection, in rear lid wiring harness
238	Earth connection 1, in interior wiring harness
B131	Connection (54), in interior wiring harness
*	for models with rear bulb monitoring device

Wiring Diagram AUDI A3 2002 - Signal horn - cigarette lighter - ashtray illumination bulb - dash panel vent illumination bulb - left and right washer jet heater element

E221	Operating unit in steering wheel
F138	Airbag coil connector and return spring with slip ring
H	Horn plate
H2	Treble tone horn
H7	Bass tone horn
J4	Dual tone horn relay
L15	Ashtray illumination bulb
L67	Dash panel left vent illumination bulb
L68	Dash panel central vent illumination bulb
L69	Dash panel right vent illumination bulb
T2	2-pin connector, heated washer jet, on right in plenum chamber
T2h	2-pin connector, heated washer jet, on right in plenum chamber
T5a	5-pin connector, yellow, interior, on steering column
T5c	5-connector, yellow, interior, in steering wheel
U1	Cigarette lighter
Z20	Left washer jet heater element
Z21	Right washer jet heater element
277	Earth connection 3, in interior wiring harness
280	Earth connection, in communications wiring harness
A72	Connection (71), in dash panel wiring harness
A81	Connection 2 (X), in dash panel wiring harness
B145	Positive connection (58b), in interior wiring harness

Wiring Diagram AUDI A3 2002 - Fuses

E87	Operating and display unit for air conditioning system/Climatronic
F10	Rear left door contact switch
S1	Fuse in relay plate fuse holder
S2	Fuse in relay plate fuse holder
S5	Fuse in relay plate fuse holder
S6	Fuse in relay plate fuse holder
S7	Fuse in relay plate fuse holder
S224	Fuse in fuse holder
S225	Fuse in fuse holder
S226	Fuse in fuse holder
S227	Fuse in fuse holder
S231	Fuse in fuse holder
V94	Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
L59	Positive connection (30), in heater unit wiring harness
*	with air conditioning system

Wiring Diagram AUDI A3 2002 - Fuses - headlight

L1	Left headlight twin filament bulb
L2	Right headlight twin filament bulb
M1	Left side light bulb
M3	Right side light bulb
S18	Fuse in relay plate fuse holder
S19	Fuse in relay plate fuse holder
S20	Fuse in relay plate fuse holder
S21	Fuse in relay plate fuse holder
S22	Fuse in relay plate fuse holder
S223	Fuse in fuse holder
T4j	4-pin connector, left headlight
T4l	4-pin connector, right headlight
280	Earth connection, in communications wiring harness
A51	Connection (56), in dash panel wiring harness
B142	Positive connection 2 (56a), in interior wiring harness
B143	Positive connection (58R), in interior wiring harness
B144	Positive connection (58L), in interior wiring harness

Wiring Diagram AUDI A3 2002 - Fuses - diagnostic connector - preparation for radio

E150	Driver side interior locking switch
S12	Fuse in relay plate fuse holder
S13	Fuse in relay plate fuse holder
S14	Fuse in relay plate fuse holder
S15	Fuse in relay plate fuse holder
S238	Fuse in fuse holder
S239	Fuse in fuse holder
S240	Fuse in fuse holder
S241	Fuse in fuse holder
S242	Fuse in fuse holder
T8	8-connector, on radio
T10d	10-pin connector, brown, connector carrier on left of A-pillar
T16	16-pin connector, black, shelf centre console (diagnostic connector)
255	Earth connection 1, in radio wiring harness
277	Earth connection 3, in interior wiring harness
A1	Positive connection (30a), in dash panel wiring harness
A46	Positive connection (30 - from radio), in dash panel wiring harness
A50	Positive connection (30as), in dash panel wiring harness
B115	Positive connection (30, central electrics), in interior wiring harness
B150	Positive connection 2 (30a), in interior wiring harness
*	see applicable Current Flow Diagram for radio

Wiring Diagram AUDI A3 2002 - Fuses - glove compartment light - number plate light

S3	Fuse in relay plate fuse holder
S4	Fuse in relay plate fuse holder
S10	Fuse in relay plate fuse holder
S11	Fuse in relay plate fuse holder
S236	Fuse in fuse holder
S237	Fuse in fuse holder
T2a	2-pin connector, black, behind the dash panel, side right
T2c	2-pin connector, black, on right in rear lid
T2d	2-pin connector, black, on left in rear lid
T6a	6-pin connector, black, on left in luggage compartment
W6	Glove compartment light
X	Number plate light
98	Earth connection, in rear lid wiring harness
277	Earth connection 3, in interior wiring harness
A21	Connection (86s), in dash panel wiring harness
A23	Connection (30al), in dash panel wiring harness
B117	Connection (58a, right), in interior wiring harness
*	is dropped from November 2001
**	applicable from November 2001

Wiring Diagram AUDI A3 2002 - Turn signal system and hazard warning lights system

E3	Hazard warning light switch
J2	Hazard warning light relay
J234	Airbag control unit
M5	Front left turn signal bulb
M7	Front right turn signal bulb
M18	Left side mounted turn signal bulb
M19	Right side mounted turn signal bulb
T10	10-pin connector, white, in plenum chamber
T16	16-pin connector, black, shelf centre console (diagnostic connector)
277	Earth connection 3, in interior wiring harness
280	Earth connection, in communications wiring harness
A125	Connection (crash signal), in dash panel wiring harness
B149	Positive connection 2 (15a), in interior wiring harness
B152	Connection (BL), in interior wiring harness
B153	Connection (RTS), in interior wiring harness
**	for automatic gearbox only
***	for manual gearbox only

Wiring Diagram AUDI A3 2002 - Right footwell light - door contact switch - central locking motor

F3	Front passenger door contact switch
F10	Rear left door contact switch
F11	Rear right door contact switch
T3k	3-pin connector, black, interior, in front passenger door
T5i	5-pin connector, black, A-pillar left, near relay plate
T10f	10-pin connector, brown, connector carrier on right of A-pillar
V94	Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
W10	Right footwell light
206	Earth connection, in door wiring harness, front passenger side
*	for 4-door models only
**	is dropped from November 2001
***	applicable from November 2001

Wiring Diagram AUDI A3 2002 - Luggage compartment light - door contact switch - central locking motor - left footwell light

F2	Driver door contact switch
T3h	3-pin connector, black, interior, in driver door
T6a	6-pin connector, black, on left in luggage compartment
T10d	10-pin connector, brown, connector carrier on left of A-pillar
V94	Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
W9	Left footwell light
W18	Luggage compartment light on left
W35	Right luggage compartment light
98	Earth connection, in rear lid wiring harness
205	Earth connection, in driver door wiring harness
238	Earth connection 1, in interior wiring harness
B155	Connection 2 (DCt), in interior wiring harness
B175	Connection (central locking), in interior wiring harness

Wiring Diagram AUDI A3 2002 - Combi-processor in dash panel insert - handbrake warning switch - warning lamps - oil level and oil temperature sender - oil pressure switch

F1	Oil pressure switch
F9	Handbrake warning switch
G266	Oil level and oil temperature sender
J218	Combi-processor in dash panel insert
J...	Engine control units
K1	Main beam warning lamp
K2	Alternator warning lamp
K14	Handbrake warning lamp
K18	Trailer operation warning lamp
K65	Left turn signal warning lamp
K86	Traction control system warning lamp
K94	Right turn signal warning lamp
K132	Electric power control fault lamp
K134	Adaptive suspension warning lamp
K149	Engine electronics warning lamp
T10	10-pin connector, white, in plenum chamber
T14	14-pin connector, in left engine compartment
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
277	Earth connection 3, in interior wiring harness
281	Earth connection 1, in engine harness
A24	Connection (brake system monitoring), in dash panel wiring harness
A80	Connection 1 (X), in dash panel wiring harness

Wiring Diagram AUDI A3 2002 - Combi-processor in dash panel insert - ABS control unit with EDL - operating and display unit for air conditioning system - fuel gauge - coolant temperature gauge

E87	Operating and display unit for air conditioning system/Climatronic
G1	Fuel gauge
G3	Coolant temperature gauge
G5	Rev. counter
G17	Ambient temperature sensor
G21	Speedometer
H3	Buzzer and gong
J104	ABS control unit
J218	Combi-processor in dash panel insert
J234	Airbag control unit
K47	ABS warning lamp
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
Y	Analogue clock
269	Earth connection (sender earth) 1, in dash panel wiring harness
A76	Connection (diagnosis wire K), in dash panel wiring harness
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness
A132	Connection (TCS/ESP), in dash panel wiring harness
B116	Connection (58d), in interior wiring harness
*	for air conditioner
**	not for conditioner
***	is dropped from November 2001
****	applicable from November 2001

Wiring Diagram AUDI A3 2002 - Immobilizer reader coil - warning lamps - belt switch - coolant shortage indicator switch - brake pad wear sender

D2	Immobilizer reader coil
E24	Driver side belt switch
F34	Brake fluid level warning contact
F66	Coolant shortage indicator switch
G34	Front left brake pad wear sender
J218	Combi-processor in dash panel insert
K3	Oil pressure warning lamp
K4	Side light warning lamp
K16	Reserve fuel warning lamp
K19	Seat belt warning system warning lamp
K28	Coolant temperature and coolant shortage warning lamp
K32	Brake pad warning lamp
K37	Washer fluid level warning lamp
K75	Airbag warning lamp
K102	Rear lid closed warning lamp
K117	Immobilizer warning lamp
K149	Engine electronics warning lamp
T6l	6-pin connector, red, under driver seat
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
249	Earth connection 2, in interior wiring harness
269	Earth connection (sender earth) 1, in dash panel wiring harness
277	Earth connection 3, in interior wiring harness
280	Earth connection, in communications wiring harness
*	only with seat belt warning

Wiring Diagram AUDI A3 2002 - Fresh air blower without air conditioning system - heated rear window

E9	Fresh air blower switch
E15	Heated rear window switch
E159	Fresh air/air recirculation flap switch
J9	Heated rear window relay
N206	Warm air blower series resistor with overheating valve
T6a	6-pin connector, black, on left in luggage compartment
V2	Fresh air blower
V154	Fresh air/recirculated air flap control motor
Z1	Heated rear window
98	Earth connection, in rear lid wiring harness
162	Earth connection, in blower motor wiring harness
A82	Connection (windscreen heater), in dash panel wiring harness
B135	Connection 1 (15a), in interior wiring harness
L66	Connection, in heater blower wiring harness