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AUDI A3 2004 – 1.6 litre fuel injection engine (Simos), 75 kW, 4-cylinder, engine code BFQ . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2004 - Battery - starter - alternator - fuses



Wiring Diagram  AUDI A3 2004 - Battery - starter - alternator - fuses 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
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
   12 Earth point, in engine compartment, left
   D97 Connection (50), in engine compartment wiring harness, right
*Models with air conditioner
**Models without air conditioner

Wiring Diagram AUDI A3 2004 - Injectors - intake manifold change-over valve - fuel pump relay - coolant temperature senders



Wiring Diagram  AUDI A3 2004 - Injectors - intake manifold change-over valve - fuel pump relay - coolant temperature senders https://portal-diagnostov.com/license.html
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DIgnition/starter switch
G2Coolant temperature sender
G62Coolant temperature sender
J17Fuel pump relay
J234Airbag control unit
J361Simos control unit
N30Injector, cylinder 1
N31Injector, cylinder 2
N32Injector, cylinder 3
N33Injector, cylinder 4
N79Heater element (crankcase breather)
N156Intake manifold change-over valve
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
   269 Earth connection (sender earth) -1-, 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- (TK (door contact)), in interior wiring harness
   D140 Connection (injectors), in engine wiring harness
*Only applies to models with heater element (crankcase breather)

Wiring Diagram AUDI A3 2004 - Simos control unit - current supply relay for Simos control unit - secondary air pump relay - map-controlled engine cooling thermostat - exhaust gas recirculation valve



Wiring Diagram  AUDI A3 2004 - Simos control unit - current supply relay for Simos control unit - secondary air pump relay - map-controlled engine cooling thermostat - exhaust gas recirculation valve https://portal-diagnostov.com/license.html
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F265Map-controlled engine cooling thermostat
G212Exhaust gas recirculation potentiometer
J299Secondary air pump relay
J361Simos control unit
J363Current supply relay for Simos control unit
N18Exhaust gas recirculation valve
T2m2-pin connector, engine prewiring, wiring duct, in engine compartment, left
T6m6-pin connector, brown, in plenum chamber
V101Secondary air pump motor
   10 Earth point, in plenum chamber
   85 Earth connection -1-, in engine compartment wiring harness
   D52 Positive (+) connection (15a), in engine compartment wiring harness
   D74 Connection (86), in engine compartment wiring harness
   G9 Connection, in Simos wiring harness

Wiring Diagram AUDI A3 2004 - Simos control unit - throttle valve control unit - exhaust gas recirculation valve



Wiring Diagram  AUDI A3 2004 - Simos control unit - throttle valve control unit - exhaust gas recirculation valve https://portal-diagnostov.com/license.html
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G186Throttle valve drive (electric throttle operation)
G187Throttle valve drive angle sender -1- (electric throttle operation)
G188Throttle valve drive angle sender -2- (electric throttle operation)
J338Throttle valve control unit
J361Simos control unit
T1010-pin connector, white, in plenum chamber
T10x10-pin connector, orange, in plenum chamber
   85 Earth connection -1-, in engine compartment wiring harness
   A45 Connection (engine speed signal), in dash panel wiring harness
   A108 Connection (speed signal), in dash panel wiring harness

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



Wiring Diagram  AUDI A3 2004 - Simos control unit - accelerator pedal position senders - cruise control system switch - clutch pedal switch - brake light 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-
J361Simos 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 - Simos control unit - lambda probes



Wiring Diagram  AUDI A3 2004 - Simos control unit - lambda probes https://portal-diagnostov.com/license.html
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G39Lambda probe
G70Air mass meter
G130Lambda probe downstream of catalytic converter
J361Simos control unit
N80Activated charcoal filter system solenoid valve 1 (pulsed)
T4m4-pin connector, lambda probe, in engine compartment, right
T6m6-pin connector, brown, engine compartment, in plenum chamber
T6o6-pin connector, lambda probe, in engine compartment, right
T10x10-pin connector, orange, engine compartment, in plenum chamber
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

Wiring Diagram AUDI A3 2004 - Simos control unit - Hall sender - engine speed sender - knock sensor I - ignition coils



Wiring Diagram  AUDI A3 2004 - Simos control unit - Hall sender - engine speed sender - knock sensor I - ignition coils https://portal-diagnostov.com/license.html
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F88Power assisted steering pressure switch
G40Hall sender
G28Engine speed sender
G61Knock sensor I
J361Simos control unit
NIgnition coil
N122Final output stage
N128Ignition coil 2
PSpark plug connector
QSpark plugs
T3b3-pin connector, blue, knock sensor I, in engine compartment
T3d3-pin connector, white, engine speed sender, in engine compartment
T1414-pin connector, in engine compartment, left
   10 Earth point, in plenum chamber
   281 Earth connection -1-, in engine prewiring wiring harness
   A15 Positive (+) connection (15), in dash panel wiring harness

Wiring Diagram AUDI A3 2004 - Simos control unit - brake servo control unit - automatic gearbox control unit - control and display unit for air conditioner/Climatronic



Wiring Diagram  AUDI A3 2004 - Simos control unit - brake servo control unit - automatic gearbox control unit - 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
J226Starter inhibitor and reversing light relay
J361Simos 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
   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 - Simos control unit - coolant temperature sender - radiator fan control unit



Wiring Diagram  AUDI A3 2004 - Simos control unit - coolant temperature sender - radiator fan control unit https://portal-diagnostov.com/license.html
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F269Temperature flap position switch
G83Coolant temperature sender - radiator outlet
G267Temperature selection rotary knob potentiometer
J293Radiator fan control unit
J361Simos control unit
S16Fuse in fuse box/relay plate
S237Fuse in fuse box
S283Brake vacuum pump fuse
T4p4-pin connector, on radiator fan control unit
T6q6-pin connector, on radiator fan control unit
T10a10-pin connector, green, in plenum chamber
T14a14-pin connector, air conditioner control unit (radiator fan)
V7Radiator fan
   11 Earth point, in battery box
   A98 Positive (+) connection -4- (30), in dash panel wiring harness
   B156 Positive (+) connection (30a), in interior wiring harness
*Only models with automatic gearbox
**Only applies to models with air conditioner
***Only applies to models without air conditioner

Wiring Diagram AUDI A3 2004 - Fuses - fuel gauge sender - fuel pump



Wiring Diagram  AUDI A3 2004 - Fuses - fuel gauge sender - 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
S13Fuse 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
   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

Wiring Diagram AUDI A3 2004 - Dash panel insert - oil pressure switch - speedometer sender (Hall sender - on gearbox) - oil level/oil temperature sender



Wiring Diagram  AUDI A3 2004 - Dash panel insert - oil pressure switch - speedometer sender (Hall sender - on gearbox) - oil level/oil temperature 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
T1010-pin connector, white, in plenum chamber
T10x10-pin connector, orange, in plenum chamber
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