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AUDI A3 2004 – Body electrical . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2004 - Earth connections



Wiring Diagram  AUDI A3 2004 - Earth connections https://portal-diagnostov.com/license.html
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   10 Earth point, in plenum chamber
   11 Earth point, in battery box
   12 Earth point, in engine compartment, left
   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 communication systems wiring harness
   285 Earth connection -7-, in interior wiring harness
   288 Earth connection (headlight range control), in dash panel wiring harness

Wiring Diagram AUDI A3 2004 - Earth connections - battery - main fuse box - alternator



Wiring Diagram  AUDI A3 2004 - Earth connections - battery - main fuse box - alternator https://portal-diagnostov.com/license.html
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ABattery
BStarter
CAlternator
C1Voltage regulator
J17Fuel pump relay
S131Fuse 1
S132Fuse 2
S133Fuse 3
S134Fuse 4
S138Fuse 5
S162Fuse -1- (30), in fuse box/battery
S163Fuse -2- (30), in fuse box/battery
S164Fuse -3- (30), in fuse box/battery
T2f2-pin connector, alternator, in engine compartment, left
T3e3-pin connector, black, on main fuse box
T4b4-pin connector, in engine compartment, left
   2 Earth strap, gearbox - body
   12 Earth point, in engine compartment, left
   45 Earth point, behind dash panel - centre
   50 Earth point, luggage compartment, left
   238 Earth connection -1-, in interior wiring harness
   255 Earth connection -1-, in radio wiring harness
*Models without air conditioner
**Models with air conditioner

Wiring Diagram AUDI A3 2004 - Earth connections - ignition/starter switch - X contact relief relay - starter inhibitor and reversing light relay



Wiring Diagram  AUDI A3 2004 - Earth connections - ignition/starter switch - X contact relief relay - starter inhibitor and reversing light relay https://portal-diagnostov.com/license.html
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DIgnition/starter switch
J17Fuel pump relay
J59X contact relief relay
J226Starter inhibitor and reversing light relay
T6m6-pin connector, brown, in plenum chamber
T10x10-pin connector, orange, in plenum chamber
T1414-pin connector, in engine compartment, left
   10 Earth point, in plenum chamber
   281 Earth connection -1-, in engine prewiring wiring 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
*Only models with manual gearbox
**Only models with automatic gearbox

Wiring Diagram AUDI A3 2004 - Lighting switch - left steering column switch



Wiring Diagram  AUDI A3 2004 - Lighting switch - left steering column switch https://portal-diagnostov.com/license.html
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E1Lighting switch
E2Turn signal switch
E4Headlight dipper/flasher switch
E18Rear fog light switch
E19Parking light switch
L9Lighting switch light bulb
L40Front 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 (NSL (rear fog light)), in dash panel wiring harness

Wiring Diagram AUDI A3 2004 - Switches and instruments - lighting control - windscreen washer/wiper system - headlight range control (does not apply to headlights with gas discharge lamps)



Wiring Diagram  AUDI A3 2004 - Switches and instruments - lighting control - windscreen washer/wiper system - headlight range control (does not apply to headlights with gas discharge lamps) https://portal-diagnostov.com/license.html
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E20Switches and instruments, lighting control
E102Headlight range control adjuster
J31Automatic intermittent wash/wipe relay
L54Headlight range control adjuster light bulb
VWindscreen wiper motor
V48Headlight range control motor, left
V49Headlight range control motor, right
   249 Earth connection -2-, in interior wiring harness
   269 Earth connection (sender earth) -1-, in dash panel wiring harness
   280 Earth connection, in communication systems wiring harness
   288 Earth connection (headlight range control), 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

Wiring Diagram AUDI A3 2004 - Right steering column switch - windscreen washer/wiper system - rear window wiper



Wiring Diagram  AUDI A3 2004 - Right steering column switch - windscreen washer/wiper system - rear window wiper https://portal-diagnostov.com/license.html
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E22Intermittent wiper switch
E34Rear wiper switch
E38Intermittent wiper control
J30Rear window wiper/washer relay
J31Automatic intermittent wash/wipe relay
T6d6-pin connector, brown, behind steering column switch trim
T8g8-pin connector, brown, in luggage compartment, left
V5Windscreen washer pump
V12Rear window wiper motor
   50 Earth point, luggage compartment, left
   98 Earth connection, in tailgate 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 2004 - Tail lights - brake lights - reversing lights - rear fog light



Wiring Diagram  AUDI A3 2004 - Tail lights - brake lights - reversing lights - rear fog light https://portal-diagnostov.com/license.html
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FBrake light switch
F4Reversing light switch
L46Rear fog light bulb, left
M2Tail light bulb, right
M4Tail light bulb, left
M6Turn signal bulb, rear left
M8Turn signal bulb, rear right
M9Brake light bulb, left
M10Brake light bulb, right
M16Reversing light bulb, left
M17Reversing light bulb, right
M25High level brake light bulb
T5h5-pin connector, brown, A pillar, left, near relay plate
T8g8-pin connector, brown, in luggage compartment, left
T10x10-pin connector, orange, in plenum chamber
   98 Earth connection, in tailgate wiring harness
   238 Earth connection -1-, in interior wiring harness
   A87 Connection (RF (reversing light)), in dash panel wiring harness
   B131 Connection (54), in interior wiring harness
   B185 Connection -2- (54), in interior wiring harness
*Only models with manual gearbox
**Does not apply to models with electronic stability program

Wiring Diagram AUDI A3 2004 - Horn - cigarette lighter - ashtray light bulb - illumination for dash panel vents - heater element for left and right washer jet



Wiring Diagram  AUDI A3 2004 - Horn - cigarette lighter - ashtray light bulb - illumination for dash panel vents - heater element for left and right washer jet https://portal-diagnostov.com/license.html
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E221Operating unit in steering wheel
F138Airbag coil connector, return spring with slip ring
HHorn plate
H2High tone horn
H7Low tone horn
J4Dual tone horn relay
L15Ashtray light bulb
L67Dash panel left vent illumination
L68Dash panel central vent illumination
L69Dash panel right vent illumination
T22-pin connector, heated washer jet, in plenum chamber, right
T2h2-pin connector, heated washer jet, in plenum chamber, right
T5a5-pin connector, yellow, vehicle interior, at steering column
T5c5-pin connector, yellow, vehicle interior, in steering wheel
U1Cigarette lighter
Z20Heater element, left washer jet
Z21Heater element, right washer jet
   277 Earth connection -3-, in interior wiring harness
   280 Earth connection, in communication systems 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 2004 - Fuses



Wiring Diagram  AUDI A3 2004 - Fuses https://portal-diagnostov.com/license.html
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E87Control and display unit for air conditioner/Climatronic
S1Fuse in fuse box/relay plate
S2Fuse in fuse box/relay plate
S5Fuse in fuse box/relay plate
S6Fuse in fuse box/relay plate
S7Fuse in fuse box/relay plate
S224Fuse in fuse box
S225Fuse in fuse box
S226Fuse in fuse box
S227Fuse in fuse box
S231Fuse in fuse box
V94Central 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
*Models with air conditioner

Wiring Diagram AUDI A3 2004 - Fuses - headlights



Wiring Diagram  AUDI A3 2004 - Fuses - headlights https://portal-diagnostov.com/license.html
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L1Twin filament bulb/sealed beam insert, left
L2Twin filament bulb/sealed beam insert, right
M1Side light bulb, left
M3Side light bulb, right
S18Fuse in fuse box/relay plate
S19Fuse in fuse box/relay plate
S20Fuse in fuse box/relay plate
S21Fuse in fuse box/relay plate
S22Fuse in fuse box/relay plate
S223Fuse in fuse box
T4j4-pin connector, headlight, left
T4l4-pin connector, headlight, right
   280 Earth connection, in communication systems 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 2004 - Fuses - diagnostic connector - provision for radio



Wiring Diagram  AUDI A3 2004 - Fuses - diagnostic connector - provision for radio https://portal-diagnostov.com/license.html
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E150Interior locking switch, driver's side
S12Fuse in fuse box/relay plate
S13Fuse in fuse box/relay plate
S14Fuse in fuse box/relay plate
S15Fuse in fuse box/relay plate
S238Fuse in fuse box
S239Fuse in fuse box
S240Fuse in fuse box
S241Fuse in fuse box
S242Fuse in fuse box
T88-pin connector, on radio
T10d10-pin connector, brown, connector carrier, A pillar, left
T1616-pin connector, black, centre console compartment (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: Radio

Wiring Diagram AUDI A3 2004 - Fuses - glove box light - number plate light



Wiring Diagram  AUDI A3 2004 - Fuses - glove box light - number plate light https://portal-diagnostov.com/license.html
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S3Fuse in fuse box/relay plate
S4Fuse in fuse box/relay plate
S10Fuse in fuse box/relay plate
S11Fuse in fuse box/relay plate
S236Fuse in fuse box
T2a2-pin connector, black, behind right side of dash panel
T2c2-pin connector, black, in rear lid, right
T2d2-pin connector, black, in rear lid, left
T6a6-pin connector, black, in luggage compartment, left
W6Glove box light
XNumber 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
*Only applies to diesel engines with manual gearbox

Wiring Diagram AUDI A3 2004 - Turn signals and hazard warning lights



Wiring Diagram  AUDI A3 2004 - Turn signals and hazard warning lights https://portal-diagnostov.com/license.html
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E3Hazard warning light switch
J2Hazard warning light relay
J234Airbag control unit
M5Turn signal bulb, front left
M7Turn signal bulb, front right
M18Side turn signal bulb, left
M19Side turn signal bulb, right
T1010-pin connector, white, in plenum chamber
T1616-pin connector, black, centre console compartment (diagnostic connector)
   277 Earth connection -3-, in interior wiring harness
   280 Earth connection, in communication systems wiring harness
   A125 Connection (crash signal), in dash panel wiring harness
   B149 Positive (+) connection -2- (15a), in interior wiring harness
   B152 Connection (BL (turn signal, left)), in interior wiring harness
   B153 Connection (BR (turn signal, right)), in interior wiring harness
*Only models with manual gearbox
**Only models with automatic gearbox

Wiring Diagram AUDI A3 2004 - Right footwell light - door contact switches - central locking motor



Wiring Diagram  AUDI A3 2004 - Right footwell light - door contact switches - central locking motor https://portal-diagnostov.com/license.html
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F3Door contact switch, front passenger's side
F10Rear left door contact switch
F11Rear right door contact switch
T3k3-pin connector, black, vehicle interior, in front passenger's door
T5i5-pin connector, black, A pillar, left, near relay plate
T10f10-pin connector, brown, connector carrier, A pillar, right
V94Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
W10Right footwell light
   206 Earth connection, in door wiring harness - front passenger's side
*Only on 4-door models

Wiring Diagram AUDI A3 2004 - Luggage compartment lights - door contact switch - central locking motor - left footwell light



Wiring Diagram  AUDI A3 2004 - Luggage compartment lights - door contact switch - central locking motor - left footwell light https://portal-diagnostov.com/license.html
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F2Door contact switch, driver's side
T3h3-pin connector, black, vehicle interior, in driver's door
T6a6-pin connector, black, in luggage compartment, left
T10d10-pin connector, brown, connector carrier, A pillar, left
V94Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
W9Left footwell light
W18Luggage compartment light, left
W35Luggage compartment light, right
   98 Earth connection, in tailgate wiring harness
   205 Earth connection, in door wiring harness - driver's side
   238 Earth connection -1-, in interior wiring harness
   B155 Connection -2- (TK (door contact)), in interior wiring harness

Wiring Diagram AUDI A3 2004 - Fresh air blower (models without air conditioner) - heated rear window



Wiring Diagram  AUDI A3 2004 - Fresh air blower (models without air conditioner) - heated rear window https://portal-diagnostov.com/license.html
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E9Fresh air blower switch
E15Heated rear window switch
E159Fresh air/air recirculating flap switch
J9Heated rear window relay
N206Warm air blower series resistor with overheating fuse
T6a6-pin connector, black, in luggage compartment, left
V2Fresh air blower
V154Fresh/recirculating air flap control motor
Z1Heated rear window
   98 Earth connection, in tailgate 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

Wiring Diagram AUDI A3 2004 - Combi-processor in dash panel insert - handbrake warning switch - warning lamps



Wiring Diagram  AUDI A3 2004 - Combi-processor in dash panel insert - handbrake warning switch - warning lamps https://portal-diagnostov.com/license.html
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F9Handbrake warning switch
J218Combi-processor in dash panel insert
K1Main beam warning lamp
K2Alternator warning lamp
K14Handbrake warning lamp
K18Trailer operation warning lamp
K29Glow period warning lamp
K65Left turn signal warning lamp
K86Traction control system warning lamp
K94Right turn signal warning lamp
K132Electronic power control fault lamp
K134Self-levelling suspension warning lamp
K149Engine electronics warning lamp
T1010-pin connector, white, in plenum chamber
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   277 Earth connection -3-, in interior wiring harness
   A24 Connection (brake system monitoring), in dash panel wiring harness
*Only models with petrol engines
**Only models with diesel engines

Wiring Diagram AUDI A3 2004 - Combi-processor in dash panel insert - ABS with EDL control unit - control and display unit for air conditioner - fuel gauge - coolant temperature gauge



Wiring Diagram  AUDI A3 2004 - Combi-processor in dash panel insert - ABS with EDL control unit - control and display unit for air conditioner - fuel gauge - coolant temperature gauge https://portal-diagnostov.com/license.html
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E87Control and display unit for air conditioner/Climatronic
G1Fuel gauge
G3Coolant temperature gauge
G5Rev. counter
G17Ambient temperature sensor
G21Speedometer
H3Buzzer/gong
J104ABS with EDL control unit
J218Combi-processor in dash panel insert
J234Airbag control unit
K47ABS warning lamp
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
YAnalogue 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
*Only models with air conditioner
**Does not apply to models with air conditioner

Wiring Diagram AUDI A3 2004 - Immobilizer reading coil - warning lamps - belt switch - coolant shortage indicator switch - brake lining/pad wear sender



Wiring Diagram  AUDI A3 2004 - Immobilizer reading coil - warning lamps - belt switch - coolant shortage indicator switch - brake lining/pad wear sender https://portal-diagnostov.com/license.html
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D2Immobilizer reading coil
E24Belt switch, driver's side
F34Brake fluid level warning contact
G34Brake lining/pad wear sender, front left
F66Coolant shortage indicator switch
J218Combi-processor in dash panel insert
K3Oil pressure warning lamp
K4Side light warning lamp
K16Reserve fuel warning lamp
K19Seat belt warning system warning lamp
K28Coolant temperature/coolant shortage warning lamp
K32Brake pad/lining warning lamp
K33Brake fluid level warning lamp
K37Windscreen washer fluid level warning lamp
K75Airbag warning lamp
K102Rear lid closed warning lamp
K117Immobilizer warning lamp
K149Engine electronics warning lamp
T6l6-pin connector, red, under driver's seat
T3232-pin connector, blue, on dash panel insert
T32a32-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
   280 Earth connection, in communication systems wiring harness
*Only models with belt warning

Wiring Diagram AUDI A3 2004 - Combi-processor in dash panel insert - oil level/oil temperature sender - oil pressure switch



Wiring Diagram  AUDI A3 2004 - Combi-processor in dash panel insert - oil level/oil temperature sender - oil pressure switch https://portal-diagnostov.com/license.html
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F1Oil pressure switch
F111Rear lid contact switch
F120Anti-theft alarm/vermin repellent system contact switch
G266Oil level/oil temperature sender
J218Combi-processor in dash panel insert
T6a6-pin connector, black, in luggage compartment, left
T1414-pin connector, in engine compartment, left
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   10 Earth point, in plenum chamber
   98 Earth connection, in rear lid wiring harness
   280 Earth connection, in communication systems wiring harness
   281 Earth connection -1-, in engine wiring harness
   A80 Connection -1- (X), in dash panel wiring harness
   B175 Connection (central locking), in interior wiring harness
   B214 Connection -1- (central locking), in interior wiring harness
*Only applies to diesel engines with manual gearbox and petrol engines with automatic gearbox and manual gearbox
**Only applies to diesel engines with automatic gearbox