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AUDI A3 2004 – 1.8 litre fuel injection engine (Motronic), 92 kW, 4-cylinder, engine code APG . 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
N79Heater element (crankcase breather)
N112Secondary air inlet valve
N156Intake manifold change-over valve
N205Inlet camshaft timing adjustment valve -1-
T6m6-pin connector, brown, in plenum chamber
T1010-pin connector, white, in plenum chamber
T1414-pin connector, in engine compartment, left
   85 Earth connection -1-, in engine compartment wiring harness
   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 wiring harness
   E7 Positive (+) connection (87a), in Motronic wiring harness
*Only applies to models with heater element (crankcase breather)

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
T3b3-pin connector, blue, knock sensor I, in engine compartment
T3c3-pin connector, grey, 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
   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 - power assisted steering pressure switch - Hall sender - exhaust gas recirculation valve



Wiring Diagram  AUDI A3 2004 - Motronic control unit - throttle valve control unit - power assisted steering pressure switch - Hall sender - exhaust gas recirculation valve https://portal-diagnostov.com/license.html
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F88Power assisted steering pressure switch
G40Hall 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)
G212Exhaust gas recirculation potentiometer
J220Motronic control unit
J338Throttle valve control unit
N18Exhaust gas recirculation valve
T1010-pin connector, white, in plenum chamber
   220 Earth connection (sender earth), in engine wiring harness
   D141 Connection (5V), in engine prewiring 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 - air mass meter - activated charcoal filter system solenoid valve 1 - lambda probes



Wiring Diagram  AUDI A3 2004 - Motronic control unit - air mass meter - activated charcoal filter system solenoid valve 1 - lambda probes https://portal-diagnostov.com/license.html
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G39Lambda probe
G70Air mass meter
G130Lambda probe downstream of catalytic converter
J220Motronic control unit
N80Activated charcoal filter system solenoid valve 1 (pulsed)
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
   D6 Connection (lambda), in front right wiring harness
   D80 Positive (+) connection (87a - for activated charcoal filter system solenoid valve), in engine compartment wiring harness

Wiring Diagram AUDI A3 2004 - Motronic control unit - Motronic current supply relay - secondary air pump relay - radiator fan



Wiring Diagram  AUDI A3 2004 - Motronic control unit - Motronic current supply relay - secondary air pump relay - radiator fan https://portal-diagnostov.com/license.html
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F18Radiator fan thermo-switch
F54Radiator fan thermo-switch
J220Motronic control unit
J271Motronic current supply relay
J299Secondary air pump relay
T2m2-pin connector, engine prewiring, wiring duct, in engine compartment, left
T6m6-pin connector, brown, in plenum chamber
T1010-pin connector, white, in plenum chamber
V7Radiator fan
V101Secondary air pump motor
   10 Earth point, in plenum chamber
   11 Earth point, in battery box
   D78 Positive (+) connection -1- (30a), in engine compartment wiring harness
   E14 Connection -1-, in Motronic wiring harness

Wiring Diagram AUDI A3 2004 - Motronic control unit - automatic gearbox control unit - vacuum pump for brakes - control and display unit for air conditioner/Climatronic



Wiring Diagram  AUDI A3 2004 - Motronic control unit - automatic gearbox control unit - vacuum pump for brakes - control and display unit for air conditioner/Climatronic https://portal-diagnostov.com/license.html
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Get access to all wiring diagrams of the carDownload PDF file
DIgnition/starter switch
E87Control and display unit for air conditioner/Climatronic
J17Fuel pump relay
J217Automatic gearbox control unit
J220Motronic control unit
J226Starter inhibitor and reversing light relay
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
   249 Earth connection -2-, in interior wiring harness
   277 Earth connection -3-, in interior wiring harness
   A121 Connection (high bus), in dash panel wiring harness
   A122 Connection (low bus), in dash panel wiring harness
   B209 Connection (Climatronic sender), in interior wiring harness
   B239 Positive (+) connection -1- (50), in interior wiring harness
*Only models with automatic gearbox
**Only applies to models with air conditioner
***Only models with manual gearbox

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



Wiring Diagram  AUDI A3 2004 - Motronic control unit - ignition coils - fuses https://portal-diagnostov.com/license.html
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J220Motronic control unit
NIgnition coil
N122Final output stage
N128Ignition coil 2
PSpark plug connector
QSpark plugs
S13Fuse in fuse box/relay plate
S237Fuse in fuse box
S283Brake vacuum pump fuse
T10x10-pin connector, orange, in plenum chamber
T1414-pin connector, in engine compartment, left
   10 Earth point, in plenum chamber
   85 Earth connection -1-, in engine compartment wiring harness
   281 Earth connection -1-, in engine wiring harness
   A98 Positive (+) connection -4- (30), in dash panel wiring harness
   B156 Positive (+) connection (30a), in interior wiring harness
   D25 Positive (+) connection (15), in engine wiring harness
*Only models with automatic gearbox

Wiring Diagram AUDI A3 2004 - Fuses - fuel pump



Wiring Diagram  AUDI A3 2004 - Fuses - fuel pump https://portal-diagnostov.com/license.html
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DIgnition/starter switch
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
S228Fuse in fuse box
S229Fuse in fuse box
S232Fuse in fuse box
S234Fuse in fuse box
S243Fuse in fuse box
T1414-pin connector, in engine compartment, left
   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
   A15 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

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