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AUDI A3 2004 – 1.8 litre fuel injection engine (Motronic), 165 kW, 4-cylinder, engine code BAM . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2004 - Battery - starter - alternator - ignition/starter switch - fuses



Wiring Diagram  AUDI A3 2004 - Battery - starter - alternator - ignition/starter switch - fuses https://portal-diagnostov.com/license.html
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ABattery
BStarter
CAlternator
C1Voltage regulator
DIgnition/starter switch
S131Fuse 1 in fuse box/battery
S132Fuse 2 in fuse box/battery
S133Fuse 3 in fuse box/battery
S134Fuse 4 in fuse box/battery
S138Fuse 5 in fuse box/battery
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
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
*Models with air conditioner
**Models without air conditioner

Wiring Diagram AUDI A3 2004 - Motronic control unit - fuel pump relay - injectors - solenoid valves



Wiring Diagram  AUDI A3 2004 - Motronic control unit - fuel pump relay - injectors - solenoid valves https://portal-diagnostov.com/license.html
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DIgnition/starter switch
J17Fuel pump relay
J220Motronic control unit
J234Airbag control unit
N30Injector, cylinder 1
N31Injector, cylinder 2
N32Injector, cylinder 3
N33Injector, cylinder 4
N75Charge pressure control solenoid valve
N205Inlet camshaft timing adjustment valve -1-
N249Turbocharger divert air valve
T6m6-pin connector, brown, in plenum chamber
T1010-pin connector, white, in plenum chamber
T1414-pin connector, in engine compartment, left
   A100 Connection -2- (87), in dash panel wiring harness
   A125 Connection (crash signal), in dash panel wiring harness
   B155 Connection -2- (TK (door contact)), in interior wiring harness
   D140 Connection (injectors), 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 I
G62Coolant temperature sender
G66Knock sensor II
J220Motronic control unit
T2ap2-pin connector, knock sensor I, in engine compartment
T2aq2-pin connector, knock sensor II, in engine compartment
T3d3-pin connector, white, engine speed sender, 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
   269 Earth connection (sender earth) -1-, in dash panel wiring harness
   A45 Connection (engine 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 - intake air temperature sender



Wiring Diagram  AUDI A3 2004 - Motronic control unit - throttle valve control unit - intake air temperature sender https://portal-diagnostov.com/license.html
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G42Intake air temperature sender
G186Throttle valve drive (electric throttle operation)
G187Throttle valve drive angle sender -1- (electric throttle operation)
G188Throttle valve drive angle sender -2- (electric throttle operation)
J220Motronic control unit
J338Throttle valve control unit
T1010-pin connector, white, in plenum chamber
   220 Earth connection (sender earth), in engine wiring harness

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



Wiring Diagram  AUDI A3 2004 - Motronic control unit - accelerator pedal position senders - brake light switch - clutch pedal switch - cruise control system 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
T1010-pin connector, white, in plenum chamber
T10e10-pin connector, black, in plenum chamber
T10g10-pin connector, blue, in plenum chamber
   B135 Connection -1- (15a), in interior wiring harness
   B185 Connection -2- (54), in interior wiring harness
*Only applies to models with cruise control system
**Only applies to models with manual gearbox

Wiring Diagram AUDI A3 2004 - Motronic control unit - charge air pressure sender - exhaust gas temperature sender -1- - Hall sender - air mass meter



Wiring Diagram  AUDI A3 2004 - Motronic control unit - charge air pressure sender - exhaust gas temperature sender -1- - Hall sender - air mass meter https://portal-diagnostov.com/license.html
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F88Power assisted steering pressure switch
G31Charge air pressure sender
G40Hall sender
G70Air mass meter
G235Exhaust gas temperature sender -1-
J220Motronic control unit
   18 Earth point, on cylinder block
   283 Earth connection -2-, in engine prewiring wiring harness
   D80 Positive (+) connection (87a - for activated charcoal filter system solenoid valve), in engine compartment wiring harness
   D141 Connection (5V), in engine prewiring wiring harness
   E17 Connection -2-, in Motronic wiring harness
*Only applies to models with engine code BAM
**Only applies to models with engine codes AUM, ARX, AUQ, ARY

Wiring Diagram AUDI A3 2004 - Motronic control unit - lambda probes - solenoid valves



Wiring Diagram  AUDI A3 2004 - Motronic control unit - lambda probes - solenoid valves https://portal-diagnostov.com/license.html
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G39Lambda probe
G130Lambda probe downstream of catalytic converter
J220Motronic control unit
N80Activated charcoal filter system solenoid valve 1 (pulsed)
N112Secondary air inlet valve
T4m4-pin connector, lambda probe, in engine compartment, right
T6m6-pin connector, brown, in plenum chamber
T6o6-pin connector, lambda probe, in engine compartment, right
Z19Lambda probe heater
Z29Lambda probe 1 heater, downstream of catalytic converter
   D80 Positive (+) connection (87a - for activated charcoal filter system solenoid valve), in engine compartment wiring harness
*Only applies to models with engine code BAM
**Only applies to models with engine codes ARY, ARX, AUM, AUQ

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



Wiring Diagram  AUDI A3 2004 - Motronic control unit - ignition coils https://portal-diagnostov.com/license.html
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J220Motronic control unit
NIgnition coil
N128Ignition coil 2
N158Ignition coil 3
N163Ignition coil 4
PSpark plug connector
QSpark plugs
T1010-pin connector, white, in plenum chamber
T1414-pin connector, in engine compartment, left
   10 Earth point, in plenum chamber
   281 Earth connection -1-, in engine wiring harness
   283 Earth connection -2-, in engine wiring harness
   D106 Connection -4-, in engine compartment wiring harness

Wiring Diagram AUDI A3 2004 - Motronic control unit - vacuum pump for brakes - automatic gearbox control unit



Wiring Diagram  AUDI A3 2004 - Motronic control unit - vacuum pump for brakes - automatic gearbox control unit https://portal-diagnostov.com/license.html
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E87Control and display unit for air conditioner/Climatronic
J217Automatic gearbox control unit
J220Motronic control unit
J542Brake servo control unit
T1010-pin connector, white, in plenum chamber
T10x10-pin connector, orange, engine compartment, in plenum chamber
V192Vacuum pump for brakes
   30 Earth point -1-, next to relay plate
   85 Earth connection -1-, in engine compartment wiring harness
   249 Earth connection -2-, in interior wiring harness
   277 Earth connection -3-, in interior wiring harness
   A108 Connection (speed signal), in dash panel wiring harness
   A121 Connection (high bus), in dash panel wiring harness
   A122 Connection (low bus), in dash panel wiring harness
*Only models with automatic gearbox
**Only models with manual gearbox
***Only applies to models with air conditioner

Wiring Diagram AUDI A3 2004 - Motronic control unit - Motronic current supply relay - fuses



Wiring Diagram  AUDI A3 2004 - Motronic control unit - Motronic current supply relay - fuses https://portal-diagnostov.com/license.html
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DIgnition/starter switch
J220Motronic control unit
J271Motronic current supply relay
J299Secondary air pump relay
S229Fuse in fuse box
S237Fuse in fuse box
S283Brake vacuum pump fuse
T2m2-pin connector, engine prewiring, wiring duct, in engine compartment, left
T6m6-pin connector, brown, in plenum chamber
T1414-pin connector, in engine compartment, left
V101Secondary air pump motor
   10 Earth point, in plenum chamber
   A2 Positive (+) connection (15), in dash panel wiring harness
   A15 Positive (+) connection (15), in dash panel wiring harness
   A98 Positive (+) connection -4- (30), in dash panel wiring harness
   B156 Positive (+) connection (30a), in interior wiring harness
   D78 Positive (+) connection -1- (30a), in engine compartment wiring harness
   E14 Connection -1-, in Motronic wiring harness
*Only models with automatic gearbox

Wiring Diagram AUDI A3 2004 - Fuel pump - fuses



Wiring Diagram  AUDI A3 2004 - Fuel pump - fuses https://portal-diagnostov.com/license.html
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GFuel gauge sender
G6Fuel pump (pre-supply pump)
S5Fuse in fuse box/relay plate
S7Fuse in fuse box/relay plate
S11Fuse in fuse box/relay plate
S13Fuse in fuse box/relay plate
S228Fuse in fuse box
S232Fuse in fuse box
S234Fuse in fuse box
S243Fuse in fuse box
   269 Earth connection (sender earth) -1-, in dash panel wiring harness
   277 Earth connection -3-, in interior wiring harness
   A2 Positive (+) connection (15), in dash panel wiring harness
   A23 Connection (30al), 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
*Only applies to models with engine codes AUM, ARX, AUQ, ARY
**Only applies to models with engine code BAM

Wiring Diagram AUDI A3 2004 - Radiator fan thermo-switches - coolant pump control unit



Wiring Diagram  AUDI A3 2004 - Radiator fan thermo-switches - coolant pump control unit 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 coolant circulation pump
   11 Earth point, in battery box
   188 Earth connection -3-, in air conditioner wiring harness
   A68 Connection (30, air conditioner), in dash panel wiring harness
*Only applies to engine code BAM
**Only applies to engine codes ARY, ARX, AUM, AUQ

Wiring Diagram AUDI A3 2004 - Dash panel insert - oil pressure switch - oil level/oil temperature sender - speedometer sender



Wiring Diagram  AUDI A3 2004 - Dash panel insert - oil pressure switch - oil level/oil temperature sender - speedometer sender https://portal-diagnostov.com/license.html
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F1Oil pressure switch
G22Speedometer sender (Hall sender, on gearbox)
G266Oil level/oil temperature sender
J218Combi-processor in dash panel insert
J533Data bus diagnostic interface
K2Alternator warning lamp
K132Electronic power control fault lamp
K149Engine electronics warning lamp
T1414-pin connector, in engine compartment, left
T1616-pin connector, black, centre console compartment (diagnostic connector)
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   269 Earth connection (sender earth) -1-, in dash panel wiring harness
   281 Earth connection -1-, in engine wiring harness
   A76 Connection (diagnosis wire K), in dash panel wiring harness
   A80 Connection -1- (X), in dash panel wiring harness
   B178 Connection (speed signal), in interior wiring harness