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AUDI A6 2003 – 2.0 litre fuel injection engine (92 kW – Motronic – 4-cylinder), engine code ALT . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A6 2003 - Battery - starter - alternator



Wiring Diagram  AUDI A6 2003 - Battery - starter - alternator https://portal-diagnostov.com/license.html
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ABattery
BStarter
CAlternator
C1Voltage regulator
DIgnition/starter switch
S205Fuse -2- (30)
T1hSingle connector, black, in engine compartment, right
T2cl2-pin connector, black, on alternator
T10o10-pin connector, brown, connector point, electronics box, plenum chamber
T10p10-pin connector, black, connector point, electronics box, plenum chamber
   1 Earth strap, battery - body
   12 Earth point, in engine compartment, left
   85 Earth connection -1-, in engine compartment wiring harness
   A17 Connection (61), in dash panel wiring harness
   A41 Positive (+) connection (50), in dash panel wiring harness
*Models with manual gearbox
**Models with automatic gearbox

Wiring Diagram AUDI A6 2003 - Motronic control unit - Motronic current supply relay



Wiring Diagram  AUDI A6 2003 - Motronic control unit - Motronic current supply relay https://portal-diagnostov.com/license.html
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FBrake light switch
F36Clutch pedal switch
F47Cruise control system brake pedal switch (diesel direct injection system)
J104ABS with EDL control unit
J217Automatic gearbox control unit
J220Motronic control unit
J271Motronic current supply relay
S13Fuse in fuse box
S199Fuse -1- (15)
T10n10-pin connector, orange, connector point, electronics box, plenum chamber
T10p10-pin connector, black, connector point, electronics box, plenum chamber
T17f17-pin connector, black, in 8-point relay carrier, behind driver's storage compartment
T17i17-pin connector, white, connector point, electronics box, plenum chamber
   A18 Connection (54), in dash panel wiring harness
   A52 Positive (+) connection 2 (30), in dash panel wiring harness
   D50 Positive (+) connection (30), in engine compartment wiring harness
   D173 Connection (87), in engine compartment wiring harness
   J9 Connection -1- (15a), in ABS wiring harness
*Models with manual gearbox
**Models with automatic gearbox 01V
***Models with automatic gearbox: multitronic® 01J

Wiring Diagram AUDI A6 2003 - Motronic control unit - injectors



Wiring Diagram  AUDI A6 2003 - Motronic control unit - injectors https://portal-diagnostov.com/license.html
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G2Coolant temperature sender
G40Hall sender
G42Intake air temperature sender
G62Coolant temperature sender
G83Coolant temperature sender - radiator outlet
J220Motronic control unit
N30Injector, cylinder 1
N31Injector, cylinder 2
N32Injector, cylinder 3
N33Injector, cylinder 4
S232Fuse 32 in fuse box
T10n10-pin connector, orange, connector point, electronics box, plenum chamber
T10p10-pin connector, black, connector point, electronics box, plenum chamber
   85 Earth connection 1, in engine compartment wiring harness
   139 Earth connection (sender earth), in Motronic wiring harness
   220 Earth connection (sender earth), in engine wiring harness
   D95 Connection (injectors), in engine compartment wiring harness
   D141 Connection (5V), in engine compartment wiring harness
*Models with automatic gearbox

Wiring Diagram AUDI A6 2003 - Motronic control unit - knock sensors - engine speed sender



Wiring Diagram  AUDI A6 2003 - Motronic control unit - knock sensors - engine speed sender https://portal-diagnostov.com/license.html
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E3Hazard warning light switch
G28Engine speed sender
G61Knock sensor 1
G66Knock sensor 2
J217Automatic gearbox control unit
J220Motronic control unit
J234Airbag control unit
J429Central locking control unit
T3h3-pin connector, green, at knock sensor 1
T3i3-pin connector, blue, at knock sensor 2
T3k3-pin connector, grey, on engine speed sender
T17k17-pin connector, red, connector point, electronics box, plenum chamber
T20d20-pin connector, black, on automatic gearbox control unit
   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
   A125 Connection (crash signal), in dash panel wiring harness
   D101 Connection 1, in engine compartment wiring harness
CAN bus (data wire)
*Models with automatic gearbox: multitronic® 01J, up to model year 2003
**Models with automatic gearbox: multitronic® 01J, from model year 2004 onwards

Wiring Diagram AUDI A6 2003 - Motronic control unit - lambda probe upstream of catalytic converter - throttle valve module - accelerator pedal position senders



Wiring Diagram  AUDI A6 2003 - Motronic control unit - lambda probe upstream of catalytic converter - throttle valve module - accelerator pedal position senders https://portal-diagnostov.com/license.html
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G39Lambda probe
G79Accelerator pedal position sender
G185Accelerator pedal position sender 2
G186Throttle valve drive (electric power control)
G187Throttle valve drive angle sender 1 (electric power control)
G188Throttle valve drive angle sender 2 (electric power control)
J217Automatic gearbox control unit
J220Motronic control unit
J285Control unit with display in dash panel insert
J338Throttle valve module
T6as6-pin connector, black, for lambda probe
T10p10-pin connector, black, connector point, electronics box, plenum chamber
T17i17-pin connector, white, connector point, electronics box, plenum chamber
T20d20-pin connector, black, on automatic gearbox control unit
T3232-pin connector, blue, on dash panel insert
Z19Lambda probe heater
*Models with automatic gearbox: multitronic® 01J, up to model year 2003
**Models with automatic gearbox: multitronic® 01J, from model year 2004 onwards

Wiring Diagram AUDI A6 2003 - Motronic control unit - lambda probes - air mass meter - brake servo relay



Wiring Diagram  AUDI A6 2003 - Motronic control unit - lambda probes - air mass meter - brake servo relay https://portal-diagnostov.com/license.html
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DIgnition/starter switch
G70Air mass meter
G130Lambda probe downstream of catalytic converter
J220Motronic control unit
J569Brake servo relay
S5Fuse in fuse box
S7Fuse in fuse box
S231Fuse 31 in fuse box
T4b4-pin connector, black, for lambda probe
T17k17-pin connector, red, connector point, electronics box, plenum chamber
V192Vacuum pump for brakes
Z29Lambda probe 1 heater, downstream of catalytic converter
   85 Earth connection 1, in engine compartment wiring harness
   200 Earth connection (screening), in engine compartment wiring harness
   A2 Positive (+) connection (15), in dash panel wiring harness
   A20 Connection (15a), in dash panel wiring harness
   D22 Connection (via fuse 234), in front right wiring harness
*Models with automatic gearbox

Wiring Diagram AUDI A6 2003 - Motronic control unit - activated charcoal filter solenoid valve 1



Wiring Diagram  AUDI A6 2003 - Motronic control unit - activated charcoal filter solenoid valve 1 https://portal-diagnostov.com/license.html
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F265Map-controlled engine cooling thermostat
J220Motronic control unit
N80Activated charcoal filter solenoid valve 1
N156Variable intake manifold change-over valve
N205Inlet camshaft timing adjustment valve 1
S279Hydraulic pump relay fuse
S282Engine electronics fuse
T10n10-pin connector, orange, connector point, electronics box, plenum chamber
T10o10-pin connector, brown, connector point, electronics box, plenum chamber
T17i17-pin connector, white, connector point, electronics box, plenum chamber
   A32 Positive (+) connection (30), in dash panel wiring harness
   D22 Connection (via fuse 234), in front right wiring harness
   D52 Positive (+) connection (15a), in engine compartment wiring harness
*Models with automatic gearbox

Wiring Diagram AUDI A6 2003 - Motronic control unit - fuel pump relay



Wiring Diagram  AUDI A6 2003 - Motronic control unit - fuel pump relay https://portal-diagnostov.com/license.html
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E45Cruise control system switch
E87Air conditioning system operating and display unit
G266Oil level and oil temperature sender
G294Brake servo pressure sensor
J17Fuel pump relay
J220Motronic control unit
N280Air conditioning system compressor regulating valve
S228Fuse 28 in fuse box
S229Fuse 29 in fuse box
S234Fuse 34 in fuse box
T10n10-pin connector, orange, connector point, electronics box, plenum chamber
T10o10-pin connector, brown, connector point, electronics box, plenum chamber
T10p10-pin connector, black, connector point, electronics box, plenum chamber
T17i17-pin connector, white, connector point, electronics box, plenum chamber
   85 Earth connection 1, in engine compartment wiring harness
   A16 Connection (cruise control system), in dash panel wiring harness
   D23 Connection (via fuse 229), in front right wiring harness
   D136 Positive (+) connection 2 (15a), in engine compartment wiring harness
*Models with cruise control system
**Models with automatic gearbox

Wiring Diagram AUDI A6 2003 - Motronic control unit - ignition coils - spark plugs



Wiring Diagram  AUDI A6 2003 - Motronic control unit - ignition coils - spark plugs https://portal-diagnostov.com/license.html
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J220Motronic control unit
N70Ignition coil 1 with output stage
N127Ignition coil 2 with output stage
N291Ignition coil 3 with output stage
N292Ignition coil 4 with output stage
PSpark plug connector
QSpark plugs
T17h17-pin connector, brown, connector point, A pillar, left
T17k17-pin connector, red, connector point, electronics box, plenum chamber
   19 Earth point, near ignition coil
   85 Earth connection -1-, in engine compartment wiring harness
   D23 Connection (via fuse 229), in front right wiring harness

Wiring Diagram AUDI A6 2003 - Starter inhibitor and reversing light relay - reversing light switch



Wiring Diagram  AUDI A6 2003 - Starter inhibitor and reversing light relay - reversing light switch https://portal-diagnostov.com/license.html
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DIgnition/starter switch
F4Reversing light switch
J217Automatic gearbox control unit
J226Starter inhibitor and reversing light relay
M16Reversing light bulb, left
M17Reversing light bulb, right
T99-pin connector, brown, at starter inhibitor relay
T10f10-pin connector, brown, connector point, A pillar, left
T10m10-pin connector, blue, connector point, electronics box, plenum chamber
T10o10-pin connector, brown, connector point, electronics box, plenum chamber
T17k17-pin connector, red, connector point, electronics box, plenum chamber
   A38 Positive (+) connection -2- (15a), in dash panel wiring harness
   A87 Connection (RF (reversing light)), in dash panel wiring harness
*Models with manual gearbox
**Models with automatic gearbox: multitronic® 01J

Wiring Diagram AUDI A6 2003 - Engine cooling - dash panel insert - fuel pump



Wiring Diagram  AUDI A6 2003 - Engine cooling - dash panel insert - fuel pump https://portal-diagnostov.com/license.html
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GFuel gauge sender
G1Fuel gauge
G6Fuel pump (pre-supply pump)
J285Control unit with display in dash panel insert
J293Radiator fan control unit, in engine compartment, front left
S42Radiator fan single fuse
S142Radiator fan control unit fuse
T10f10-pin connector, brown, connector point, A pillar, left
T10ba10-pin connector, blue, connector point, A pillar, left
T17h17-pin connector, brown, connector point, A pillar, left
T3232-pin connector, blue, on dash panel insert
V7Radiator fan
   44 Earth point, lower part of left A pillar
   86 Earth connection -1-, in rear wiring harness
   193 Earth connection -1-, in radiator fan wiring harness
   269 Earth connection (sender earth) -1-, in dash panel wiring harness
*Sender earth output
**Radiator fan (350 W)
***Radiator fan (600 W)

Wiring Diagram AUDI A6 2003 - Dash panel insert



Wiring Diagram  AUDI A6 2003 - Dash panel insert https://portal-diagnostov.com/license.html
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F1Oil pressure switch
F66Coolant shortage indicator switch
G3Coolant temperature gauge
G5Rev. counter
G21Speedometer
G22Speedometer sender (Hall sender, on gearbox)
J285Control unit with display in dash panel insert
K2Alternator warning lamp
K3Oil pressure warning lamp
K28Coolant temperature/coolant shortage warning lamp
K132Electronic power control fault lamp
T10p10-pin connector, black, connector point, electronics box, plenum chamber
T16a16-pin connector, diagnosis connection
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   85 Earth connection -1-, in engine compartment wiring harness
   139 Earth connection (sender earth), in Motronic wiring harness
   269 Earth connection (sender earth) -1-, in dash panel wiring harness
   A76 Connection (diagnosis wire K), in dash panel wiring harness
   A108 Connection (speed signal), in dash panel wiring harness