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AUDI A3 2004 – Audi A3 (1.8 litre fuel injection engine, 110 kW, Motronic, 4-cylinder) engine codes ARZ . 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
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
   281 Earth connection -1-, in engine prewiring wiring harness
*Only engine codes ARZ, APP, APY
**Does not apply to engine code APY
***Only to engine code APY

Wiring Diagram AUDI A3 2004 - Motronic control unit - fuel pump relay - injectors - Hall sender - Hall sender - charge pressure control solenoid valve - divert air valve



Wiring Diagram  AUDI A3 2004 - Motronic control unit - fuel pump relay - injectors - Hall sender - Hall sender - charge pressure control solenoid valve - divert air 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
N30Injector, cylinder 1
N31Injector, cylinder 2
N32Injector, cylinder 3
N33Injector, cylinder 4
N75Charge pressure control solenoid valve
N249Turbocharger divert air valve
T6m6-pin connector, brown, in plenum chamber
T1414-pin connector, in engine compartment, left
   A86 Connection (50a), 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
*Only to engine code APY

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
J217Automatic gearbox control unit
J220Motronic control unit
T3b3-pin connector, black, in engine compartment
T3c3-pin connector, brown, in engine compartment
T3d3-pin connector, grey, in engine compartment
T10x10-pin connector, orange, in plenum chamber
T1414-pin connector, in engine compartment, left
   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
*Does not apply four speed automatic gearbox
**Only models with five speed automatic gearbox

Wiring Diagram AUDI A3 2004 - Radiator fan



Wiring Diagram  AUDI A3 2004 - Radiator fan 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
J217Automatic gearbox control unit
J220Motronic control unit
J299Secondary air pump relay
J338Throttle valve control unit
T1010-pin connector, white, in plenum chamber
V101Secondary air pump motor
   10 Earth point, in plenum chamber
   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
   E14 Connection -1-, in Motronic wiring harness
*Only engine codes ARZ, APP, APY
**Only models with automatic gearbox
***Relay in plenum chamber
CAN bus (data wires)

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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E45Cruise control system switch
FBrake light switch
F36Clutch pedal switch
G79Accelerator pedal position sender
G185Accelerator pedal position sender -2-
J220Motronic control unit
T77-pin connector, behind steering column switch trim
T10e10-pin connector, black, in plenum chamber
T10g10-pin connector, blue, in plenum chamber
   85 Earth connection -1-, in engine compartment wiring harness
   B135 Connection -1- (15a), in interior wiring harness
   B185 Connection -2- (54), in interior wiring harness
*Only models with cruise control system
**Only models with manual gearbox
***Only to engine code APY

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
J217Automatic gearbox control unit
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
**Does not apply to engine code APY
***Only models with automatic gearbox
****Only engine codes ARZ, APP, APY

Wiring Diagram AUDI A3 2004 - Motronic control unit - ignition system



Wiring Diagram  AUDI A3 2004 - Motronic control unit - 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
T1010-pin connector, white, 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 - Motronic control unit - current supply relay



Wiring Diagram  AUDI A3 2004 - Motronic control unit - current supply relay https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
J220Motronic control unit
J271Motronic current supply relay
S7Fuse in fuse box
S10Fuse in fuse box
S13Fuse in fuse box
S229Fuse in fuse box
T2m2-pin connector, wiring duct, in engine compartment, left
T6m6-pin connector, brown, in plenum chamber
T1414-pin connector, in engine compartment, left
   A2 Positive (+) connection (15), in dash panel wiring harness
   A15 Positive (+) connection (15), in dash panel wiring harness
   A98 Positive (+) connection -4- (30a), in dash panel wiring harness
   B156 Positive (+) connection -4- (30a), in interior wiring harness
   D78 Positive (+) connection -1- (30a), in engine compartment wiring harness
*Relay in plenum chamber

Wiring Diagram AUDI A3 2004 - Radiator fan



Wiring Diagram  AUDI A3 2004 - Radiator fan https://portal-diagnostov.com/license.html
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F18Radiator fan thermo-switch
F54Radiator fan thermo-switch
J155Coolant pump control unit
V7Radiator fan
V51Continued circulation of coolant pump
   11 Earth point, in battery box
   12 Earth point, in engine compartment, left
   188 Earth connection -3-, in air conditioner wiring harness
   A68 Connection (30, air conditioner), in dash panel wiring harness
*Applies to engine code APY only, models not equipped with air conditioner
**Does not apply to engine code APY

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
https://portal-diagnostov.com/license.html Automotive Electricians Portal FZCO Automotive Electricians Portal FZCO
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
K149Engine electronics warning lamp
S228Fuse in fuse box
S232Fuse in fuse box
S234Fuse in fuse box
S243Fuse in fuse box
T1414-pin connector, 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
   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
   B178 Connection (speed signal), in interior wiring harness