Wiring Diagram AUDI A6 2005 - Battery - starter - alternator
| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J31 | Automatic intermittent wash/wipe relay |
| S205 | Fuse -2- (30) |
| T2cl | 2-pin connector, black, on alternator |
| T4ay | 4-pin connector, black, in engine compartment, right |
| T10o | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10p | 10-pin connector, black, connector point, electronics box, plenum chamber |
| 1 | Earth strap, battery - body |
| 3 | Earth strap, engine - body |
| 81 | Earth connection -1-, in dash panel wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| A41 | Positive (+) connection (50), in dash panel wiring harness |
| D66 | Positive (+) connection (61), in engine compartment wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - starter inhibitor relay
| D | Ignition/starter switch |
| E3 | Hazard warning light switch |
| F125 | Multi-function switch |
| J207 | Starter inhibitor relay |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| T9 | 9-pin connector, brown, at starter inhibitor relay |
| T17k | 17-pin connector, red, connector point, electronics box, plenum chamber |
| T17m | 17-pin connector, blue, connector point, A pillar, right |
| 12 | Earth point, in engine compartment, left |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - injectors and ignition coils for cylinders 1 - 4
| J220 | Motronic control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N70 | Ignition coil 1 with output stage |
| N127 | Ignition coil 2 with output stage |
| N291 | Ignition coil 3 with output stage |
| N292 | Ignition coil 4 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| S229 | Fuse 29 in fuse box |
| T10n | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| T17i | 17-pin connector, white, connector point, electronics box, plenum chamber |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| D23 | Connection (via fuse 229), in front right wiring harness |
| D131 | Connection (15) via fuse 232, in engine compartment wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - injectors and ignition coils for cylinders 5 - 8
| J220 | Motronic control unit |
| N83 | Injector, cylinder 5 |
| N84 | Injector, cylinder 6 |
| N85 | Injector, cylinder 7 |
| N86 | Injector, cylinder 8 |
| N323 | Ignition coil 5 with final output stage |
| N324 | Ignition coil 6 with final output stage |
| N325 | Ignition coil 7 with final output stage |
| N326 | Ignition coil 8 with final output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T10n | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| D23 | Connection (via fuse 229), in front right wiring harness |
| D131 | Connection (15) via fuse 232, in engine compartment wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - throttle valve control unit - accelerator pedal position senders - knock sensor 1 - knock sensor 2 - inlet camshaft timing adjustment valves
| G61 | Knock sensor 1 |
| G66 | Knock sensor 2 |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| G186 | Throttle valve drive (electric power control) |
| G187 | Throttle valve drive angle sender -1- (electric power control) |
| G188 | Throttle valve drive angle sender -2- (electric power control) |
| J220 | Motronic control unit |
| J338 | Throttle valve control unit |
| N205 | Inlet camshaft timing adjustment valve -1- |
| N208 | Inlet camshaft timing adjustment valve -2- |
| S282 | Engine electronics fuse |
| T3x | 3-pin connector, blue, at knock sensor 1 |
| T3az | 3-pin connector, black, at knock sensor 2 |
| T17i | 17-pin connector, white, connector point, electronics box, plenum chamber |
| 19 | Earth point, near ignition coil |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - knock sensor 3 - knock sensor 4 - engine speed sender - coolant temperature senders - Motronic current supply relay
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G62 | Coolant temperature sender |
| G198 | Knock sensor 3 |
| G199 | Knock sensor 4 |
| J220 | Motronic control unit |
| J271 | Motronic current supply relay |
| T3k | 3-pin connector, grey, on engine speed sender |
| T3bl | 3-pin connector, black, at knock sensor 3 |
| T3bm | 3-pin connector, blue, at knock sensor 4 |
| T10o | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10p | 10-pin connector, black, connector point, electronics box, plenum chamber |
| 139 | Earth connection (sender earth), in Motronic wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| D50 | Positive (+) connection (30), in engine compartment wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - Hall senders - brake light switch - brake servo pressure sensor
| F | Brake light switch |
| F47 | Cruise control system brake pedal switch |
| G40 | Hall sender |
| G163 | Hall sender 2 |
| G294 | Brake servo pressure sensor |
| J104 | ABS with EDL control unit |
| J220 | Motronic control unit |
| M9 | Brake light bulb, left |
| M10 | Brake light bulb, right |
| S5 | Fuse in fuse box |
| S7 | Fuse in fuse box |
| S13 | Fuse in fuse box |
| T10n | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T17f | 17-pin connector, black, in 8-point relay carrier, behind driver's storage compartment |
| T17i | 17-pin connector, white, connector point, electronics box, plenum chamber |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A18 | Connection (54), in dash panel wiring harness |
| A52 | Positive (+) connection 2 (30), in dash panel wiring harness |
| E16 | Positive (+) connection (5 volts), in Motronic wiring harness |
| J9 | Connection -1- (15a), in ABS wiring harness |
| * | ABS 5.3 |
| ** | ABS 5.7 |
Wiring Diagram AUDI A6 2005 - Motronic control unit - secondary air pump relay - activated charcoal filter system solenoid valve 1 (pulsed) - cruise control system switch
| E45 | Cruise control system switch |
| J220 | Motronic control unit |
| J299 | Secondary air pump relay |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| N112 | Secondary air inlet valve |
| N144 | Electro/hydraulic engine mounting solenoid valve, left |
| N145 | Electro/hydraulic engine mounting solenoid valve, right |
| N156 | Intake manifold change-over valve |
| S130 | Secondary air pump fuse |
| T17i | 17-pin connector, white, connector point, electronics box, plenum chamber |
| V101 | Secondary air pump motor |
| 12 | Earth point, in engine compartment, left |
| A16 | Connection (cruise control system), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| D22 | Connection (via fuse 234), in front right wiring harness |
| * | Models with cruise control system |
Wiring Diagram AUDI A6 2005 - Motronic control unit - lambda probes - air mass meter
| G39 | Lambda probe |
| G70 | Air mass meter |
| G108 | Lambda probe 2 |
| J220 | Motronic control unit |
| T6as | 6-pin connector, black, for lambda probe 1, right |
| T6av | 6-pin connector, black, for lambda probe 2, left |
| Z19 | Lambda probe heater |
| Z28 | Lambda probe 2 heater |
| D22 | Connection (via fuse 234), in front right wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - fuel pump relay - lambda probes downstream of catalytic converter
| G130 | Lambda probe downstream of catalytic converter |
| G131 | Lambda probe 2 downstream of catalytic converter |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| S228 | Fuse 28 in fuse box |
| S232 | Fuse 32 in fuse box |
| S234 | Fuse 34 in fuse box |
| T4s | 4-pin connector, green, for lambda probe 1 downstream of catalytic converter |
| T4t | 4-pin connector, brown, for lambda probe 2 downstream of catalytic converter |
| T10n | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T10p | 10-pin connector, black, connector point, electronics box, plenum chamber |
| Z29 | Lambda probe 1 heater, downstream of catalytic converter |
| Z30 | Lambda probe 2 heater, downstream of catalytic converter |
| D22 | Connection (via fuse 234), in front right wiring harness |
Wiring Diagram AUDI A6 2005 - Motronic control unit - CAN bus - brake servo relay - vacuum pump for brakes
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J569 | Brake servo relay |
| S279 | Hydraulic pump relay fuse |
| T17k | 17-pin connector, red, connector point, electronics box, plenum chamber |
| T17m | 17-pin connector, blue, connector point, A pillar, right |
| V192 | Vacuum pump for brakes |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| • | CAN bus (data wire) |
| * | Only applies to models for countries with hot climate |
Wiring Diagram AUDI A6 2005 - Engine cooling - radiator fan control unit - radiator fan control unit -2- - high pressure sender
| E87 | Control and display unit for air conditioner |
| G65 | High pressure sender |
| J293 | Radiator fan control unit, in engine compartment, front left |
| J671 | Radiator fan control unit -2- |
| S42 | Radiator fan single fuse |
| S104 | Radiator fan fuse, 2nd speed |
| S146 | Radiator fan fuse, run-on |
| T14a | 14-pin connector, black, in engine compartment, front left |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| V7 | Radiator fan |
| V177 | Radiator fan -2- |
| 44 | Earth point, lower part of left A pillar |
| 193 | Earth connection -1-, in radiator fan wiring harness |
Wiring Diagram AUDI A6 2005 - Engine cooling - radiator fan relay - continued coolant circulation relay - radiator fan - right - continued coolant circulation pump - oil level thermo sender (service interval)
| E87 | Control and display unit for air conditioner |
| F18 | Radiator fan thermo-switch |
| G266 | Oil level thermo sender, service interval |
| J26 | Radiator fan relay |
| J151 | Continued coolant circulation relay |
| N280 | Compressor regulating valve, air conditioning system |
| S94 | Radiator fan fuse, 3rd speed |
| S142 | Radiator fan control unit fuse |
| T10o | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10p | 10-pin connector, black, connector point, electronics box, plenum chamber |
| V35 | Radiator fan, right |
| V51 | Continued coolant circulation pump |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| A20 | Positive (+) connection (15a), in dash panel wiring harness |
| D75 | Positive (+) connection -2- (30), in engine compartment wiring harness |
| * | Models with continued coolant circulation pump |
| ** | Models with trailer coupling (applies to models for countries with hot climate) |
Wiring Diagram AUDI A6 2005 - Dash panel insert - fuel pump - fuel gauge
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G6 | Fuel pump (pre-supply pump) |
| G169 | Fuel gauge sender -2- |
| G237 | Fuel gauge sender -3- |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| T10f | 10-pin connector, brown, connector point, A pillar, left |
| T10ba | 10-pin connector, blue, connector point, A pillar, left |
| T16a | 16-pin connector, diagnosis connection |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 86 | Earth connection -1-, in rear wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| * | Models with front-wheel drive |
| ** | Models with four-wheel drive |
| *** | Wiring in fuel tank |
| # | Sender earth output |
Wiring Diagram AUDI A6 2005 - Dash panel insert
| F1 | Oil pressure switch |
| F66 | Coolant shortage indicator switch |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| G21 | Speedometer |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| K83 | Fault warning lamp for self-diagnosis/exhaust emissions |
| K132 | Electronic power control fault lamp |
| T10p | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| A108 | Connection (speed signal), in dash panel wiring harness |
| • | CAN bus (data wire) |
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