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AUDI A3 2004 – Audi A3 (1,8 l litre fuel injection engine, 110 kW, Motronic, 4-cylinder) engine codes AQA . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2004 - Battery - starter - alternator - main fuse box/battery



Wiring Diagram  AUDI A3 2004 - Battery - starter - alternator - main fuse box/battery https://portal-diagnostov.com/license.html
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ABattery
BStarter
CAlternator
C1Voltage regulator
DIgnition/starter switch
F18Radiator fan thermo-switch
F54Radiator fan thermo-switch
S131Fuse 1
S132Fuse 2
S133Fuse 3
S134Fuse 4
S138Fuse 5
S1621 in fuse box/battery
S1632 in fuse box/battery
S1643 in fuse box/battery
T2f2-pin connector, wiring duct, in engine compartment, left
T3e3-pin connector, black, on main fuse box/battery
T6m6-pin connector, brown, in plenum chamber
   2 Earth strap, gearbox - body
   10 Earth point, in plenum chamber
   12 Earth point, in engine compartment, left
   85 Earth connection -1-, in engine compartment wiring harness
*Only to engine codes APY

Wiring Diagram AUDI A3 2004 - Motronic control unit - fuel pump relay - injectors - Hall sender - charge pressure control solenoid valve - by-pass cut-off valve



Wiring Diagram  AUDI A3 2004 - Motronic control unit - fuel pump relay - injectors - Hall sender - charge pressure control solenoid valve - by-pass cut-off valve https://portal-diagnostov.com/license.html
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DIgnition/starter switch
E3Hazard warning light switch
F88Power assisted steering pressure switch
G40Hall sender
J17Fuel pump relay
J220Motronic control unit
N8By-pass cut-off valve (central idling)
N30Injector, cylinder 1
N31Injector, cylinder 2
N32Injector, cylinder 3
N33Injector, cylinder 4
N75Charge pressure control solenoid valve
T10c10-pin connector, black, wiring duct, in engine compartment, left
T10x10-pin connector, orange, in plenum chamber
   A2 Positive (+) connection (15), in dash panel wiring harness
   A100 Connection -2- (87), in dash panel wiring harness
   A125 Connection (crash signal), in dash panel wiring harness
   B155 Connection -2- (DC), in interior wiring harness
   D140 Connection (injectors), in engine prewiring wiring harness
   D141 Connection (5V), in engine prewiring wiring harness
   E7 Positive (+) connection (87a), in Motronic wiring harness

Wiring Diagram AUDI A3 2004 - Motronic control unit - knock sensors - engine speed sender - coolant temperature senders



Wiring Diagram  AUDI A3 2004 - Motronic control unit - knock sensors - engine speed sender - coolant temperature senders https://portal-diagnostov.com/license.html
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G2Coolant temperature sender
G28Engine speed sender
G61Knock sensor 1
G62Coolant temperature sender
G66Knock sensor 2
J220Motronic control unit
T3b3-pin connector, black, in engine compartment
T3c3-pin connector, brown, in engine compartment
T3d3-pin connector, grey, in engine compartment
T6m6-pin connector, brown, in plenum chamber
T10c10-pin connector, black, wiring duct, in engine compartment, left
T10x10-pin connector, orange, in plenum chamber
   220 Earth connection (sender earth), in engine wiring harness
   278 Earth connection -4-, in interior wiring harness
   A45 Connection (engine speed signal), in dash panel wiring harness
   A108 Connection (speed signal), in dash panel wiring harness
   D101 Connection -1-, in engine compartment wiring harness

Wiring Diagram AUDI A3 2004 - Motronic control unit - throttle valve control unit - ambient temperature sensor - charge air pressure sender



Wiring Diagram  AUDI A3 2004 - Motronic control unit - throttle valve control unit - ambient temperature sensor - charge air pressure sender https://portal-diagnostov.com/license.html
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G31Charge air pressure sender
G42Intake air temperature sender
G186Throttle valve drive
G187Throttle valve drive angle sender -1-
G188Throttle valve drive angle sender -2-
J104ABS with EDL control unit
J220Motronic control unit
J338Throttle valve control unit
T10y10-pin connector, green, in plenum chamber
   85 Earth connection -1-, in engine compartment wiring harness
   220 Earth connection (sender earth), in engine wiring harness
   A121 Connection (high bus), in dash panel wiring harness
   A122 Connection (low bus), in dash panel wiring harness
CAN bus (data wire)

Wiring Diagram AUDI A3 2004 - Motronic control unit - accelerator pedal position senders - cruise control system switch - brake light switch - clutch pedal switch



Wiring Diagram  AUDI A3 2004 - Motronic control unit - accelerator pedal position senders - cruise control system switch - brake light switch - clutch pedal switch https://portal-diagnostov.com/license.html
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E45Cruise control system switch
FBrake light switch
F36Clutch pedal switch
G79Accelerator pedal position sender
G185Accelerator pedal position sender -2-
J220Motronic control unit
J316Secondary air system relay
T77-pin connector, behind steering column switch trim
T10e10-pin connector, black, in plenum chamber
T10g10-pin connector, blue, in plenum chamber
T10y10-pin connector, green, in plenum chamber
V101Secondary air pump motor
   10 Earth point, in plenum chamber
   B135 Connection -1- (15a), in interior wiring harness
   B185 Connection -2- (54), in interior wiring harness
   E14 Connection -1-, in Motronic wiring harness
*Only models with cruise control system
**Only to engine codes APY
***Relay in plenum chamber

Wiring Diagram AUDI A3 2004 - Simos control unit - lambda probes with additional heater - air mass meter - activated charcoal filter system solenoid valve



Wiring Diagram  AUDI A3 2004 - Simos control unit - lambda probes with additional heater - air mass meter - activated charcoal filter system solenoid valve https://portal-diagnostov.com/license.html
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E87Control and display unit for air conditioner
G39Lambda probe
G70Air mass meter
G130Lambda probe downstream of catalytic converter
J220Motronic control unit
J293Radiator fan control unit
N80Activated charcoal filter system solenoid valve 1
N112Secondary air inlet valve
T44-pin connector, in engine compartment, right
T4m4-pin connector, in engine compartment, right
T6m6-pin connector, brown, in plenum chamber
T10x10-pin connector, orange, in plenum chamber
Z19Lambda probe heater
Z29Lambda probe 1 heater, downstream of catalytic converter
   19 Earth point, near coil
   283 Earth connection -2-, in engine prewiring wiring harness
   D80 Positive (+) connection (87a), in engine compartment wiring harness
*Only models with air conditioner
**Applies to engine codes AJQ only
***Only to engine codes APY

Wiring Diagram AUDI A3 2004 - Ignition system



Wiring Diagram  AUDI A3 2004 - Ignition system https://portal-diagnostov.com/license.html
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J220Motronic control unit
NIgnition coil 1
N128Ignition coil 2
N158Ignition coil 3
N163Ignition coil 4
PSpark plug connector
QSpark plugs
T10c10-pin connector, black, wiring duct, in engine compartment, left
T10y10-pin connector, green, in plenum chamber
   281 Earth connection -1-, in engine prewiring wiring harness
   283 Earth connection -2-, in engine prewiring wiring harness
   D106 Connection -4-, in engine compartment wiring harness

Wiring Diagram AUDI A3 2004 - Dash panel insert - combi-processor in dash panel insert - fuel pump - fuel gauge sender - road speed sender - fuse box



Wiring Diagram  AUDI A3 2004 - Dash panel insert - combi-processor in dash panel insert - fuel pump - fuel gauge sender - road speed sender - fuse box https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
GFuel gauge sender
G6Fuel pump
G22Speedometer sender (Hall sender, on gearbox)
J218Combi-processor in dash panel insert
K132Electronic power control fault lamp
S7Fuse in fuse box
T10c10-pin connector, black, wiring duct, in engine compartment, left
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   277 Earth connection -3-, in interior wiring harness
   278 Earth connection -4-, in interior wiring harness
   281 Earth connection -1-, in engine prewiring wiring harness
   A15 Positive (+) connection (15), in dash panel wiring harness
   A98 Positive (+) connection -4- (30a), in dash panel wiring harness
   A99 Connection -1- (87), in dash panel wiring harness
   A101 Connection -3- (87), in dash panel wiring harness
   B147 Positive (+) connection -2- (87), in interior wiring harness
   B149 Positive (+) connection -2- (15a), in interior wiring harness
   B156 Positive (+) connection -4- (30a), in interior wiring harness