Wiring Diagram AUDI A8 2002 - Battery - starter - alternator
| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| S204 | Fuse -1- (30) |
| T1n | Single connector, red, near alternator, in engine compartment, front right |
| T2ad | 2-pin connector, black, near alternator, in engine compartment, front right |
| TV1 | Junction box |
| TV2 | Terminal 30 junction box |
| 51 | Earth point, luggage compartment, right |
| A17 | Connection (61), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| E104 | Earth connection, in dash panel wiring harness (near relay point) |
| * | Models with manual gearbox |
| ** | Models with automatic gearbox |
Wiring Diagram AUDI A8 2002 - Motronic control unit - starter inhibitor relay - inlet camshaft timing adjustment valves
| D | Ignition/starter switch |
| F125 | Multi-function switch |
| J207 | Starter inhibitor relay |
| J220 | Motronic control unit |
| N205 | Inlet camshaft timing adjustment valve 1 |
| N208 | Inlet camshaft timing adjustment valve 2 |
| S102 | Engine control unit fuse |
| T6e | 6-pin connector, brown, connector point, electronics box, plenum chamber |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10d | 10-pin connector, red, connector point, electronics box, plenum chamber |
| T10ab | 10-pin connector, black, on gearbox |
| 43 | Earth point, lower part of right A pillar |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| E6 | Positive (+) connection -1- (15), in Motronic wiring harness |
| E100 | Connection (multi-function switch), in dash panel wiring harness |
| * | Models with manual gearbox |
| ** | Models with automatic gearbox |
Wiring Diagram AUDI A8 2002 - Motronic control unit - ignition coils - injectors for cylinders 1 - 4
| C6 | Coil condenser |
| 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 |
| S2 | Fuse in fuse carrier |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
| D106 | Connection -4-, in engine compartment wiring harness |
| E6 | Positive (+) connection -1- (15), in Motronic wiring harness |
Wiring Diagram AUDI A8 2002 - Motronic control unit - ignition coils - injectors for cylinders 5 - 8
| C6 | Coil condenser |
| 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 |
| S116 | Injector fuse |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
| D107 | Connection -5-, in engine compartment wiring harness |
| E6 | Positive (+) connection -1- (15), in Motronic wiring harness |
Wiring Diagram AUDI A8 2002 - Motronic control unit - throttle valve control unit - accelerator pedal position senders - cruise control system switch
| E45 | Cruise control system switch |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| G186 | Throttle valve drive (electric throttle operation) |
| G187 | Throttle valve drive angle sender -1- (electric throttle operation) |
| G188 | Throttle valve drive angle sender -2- (electric throttle operation) |
| J220 | Motronic control unit |
| J338 | Throttle valve control unit |
| S6 | Fuse in fuse carrier |
| T10w | 10-pin connector, white, connector point, electronics box, plenum chamber |
| 17 | Earth point, on intake manifold |
| 131 | Earth connection -2-, in engine compartment wiring harness |
| A16 | Connection (cruise control system), in dash panel wiring harness |
| A74 | Connection (15a, fuse 6), in dash panel wiring harness |
| * | Models with cruise control system |
Wiring Diagram AUDI A8 2002 - Motronic control unit - knock sensors - engine speed sender - coolant temperature senders
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G61 | Knock sensor 1 |
| G62 | Coolant temperature sender |
| G66 | Knock sensor 2 |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| S113 | Automatic gearbox control unit fuse |
| T3i | 3-pin connector, green, at knock sensor 1 |
| T3k | 3-pin connector, green, at knock sensor 2 |
| T3m | 3-pin connector, grey, engine speed sender, in engine compartment |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T16a | 16-pin connector, diagnosis connection |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
| * | Models with manual gearbox |
| ** | Models with automatic gearbox |
Wiring Diagram AUDI A8 2002 - Motronic control unit - Hall senders - brake light switch - clutch pedal switch - Motronic current supply relay
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch (diesel direct injection system) |
| G40 | Hall sender |
| G163 | Hall sender 2 |
| J220 | Motronic control unit |
| J271 | Motronic current supply relay |
| M9 | Brake light bulb, left |
| M10 | Brake light bulb, right |
| S6 | Fuse in fuse carrier |
| S9 | Fuse in fuse carrier |
| S10 | Fuse in fuse carrier |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T10c | 10-pin connector, green, connector point, electronics box, plenum chamber |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A18 | Connection (54), in dash panel wiring harness |
| A74 | Connection (15a, fuse 6), in dash panel wiring harness |
| B235 | Positive (+) connection -4- (15a), in interior wiring harness |
| E16 | Positive (+) connection (5 volts), in Motronic wiring harness |
| E109 | Connection (30, central electrics), in dash panel wiring harness |
| * | Models with manual gearbox |
Wiring Diagram AUDI A8 2002 - Motronic control unit - lambda probes upstream of catalytic converter - air mass meter
| G39 | Lambda probe |
| G70 | Air mass meter |
| G108 | Lambda probe 2 |
| J220 | Motronic control unit |
| T4m | 4-pin connector, black, lambda probe, right |
| T4n | 4-pin connector, black, lambda probe 2, left |
| T10d | 10-pin connector, red, connector point, electronics box, plenum chamber |
| Z19 | Lambda probe heater |
| Z28 | Lambda probe 2 heater |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| A99 | Connection -1- (87), in dash panel wiring harness |
| E28 | Connection (lambda probe heating), in Motronic wiring harness |
Wiring Diagram AUDI A8 2002 - Motronic control unit - activated charcoal filter system solenoid valve 1 - solenoid valves for electro/hydraulic engine mounting - intake manifold change-over valve - lambda probes downstream of catalytic converter
| G130 | Lambda probe downstream of catalytic converter |
| G131 | Lambda probe 2 downstream of catalytic converter |
| J220 | Motronic control unit |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| N144 | Electro/hydraulic engine mounting solenoid valve, left |
| N145 | Electro/hydraulic engine mounting solenoid valve, right |
| N156 | Intake manifold change-over valve |
| N261 | Intake manifold change-over valve 2 |
| T4r | 4-pin connector, black, lambda probe 1 downstream of catalytic converter |
| T4s | 4-pin connector, black, lambda probe 2 downstream of catalytic converter |
| T10z | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| Z29 | Lambda probe 1 heater, downstream of catalytic converter |
| Z30 | Lambda probe 2 heater, downstream of catalytic converter |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| E7 | Positive (+) connection (87a), in Motronic wiring harness |
| * | Does not apply to Audi S8 models |
Wiring Diagram AUDI A8 2002 - Motronic control unit - fuel pump relay - secondary air pump motor - secondary air inlet valve - secondary air pump relay
| E87 | Control and display unit for air conditioner |
| F129 | Air conditioner pressure switch |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| J299 | Secondary air pump relay |
| N112 | Secondary air inlet valve |
| S1 | Fuse in fuse carrier |
| S3 | Fuse in fuse carrier |
| S117 | Control element fuse |
| S130 | Secondary air pump fuse |
| T6a | 6-pin connector, purple, connector point, electronics box, plenum chamber |
| T6e | 6-pin connector, brown, connector point, electronics box, plenum chamber |
| T10c | 10-pin connector, green, connector point, electronics box, plenum chamber |
| T10d | 10-pin connector, red, connector point, electronics box, plenum chamber |
| V101 | Secondary air pump motor |
| 82 | Earth connection -1-, in front left wiring harness |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 112 | Earth connection -2-, in air conditioner wiring harness |
| A52 | Positive (+) connection 2 (30), in dash panel wiring harness |
| E7 | Positive (+) connection (87a), in Motronic wiring harness |
Wiring Diagram AUDI A8 2002 - Motronic control unit - data wire - crash signal
| E3 | Hazard warning light switch |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| T6t | 6-pin connector, red, footwell, right, at wheelhouse, behind carpet |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10d | 10-pin connector, red, connector point, electronics box, plenum chamber |
| T16 | 16-pin connector, connector plug C at V94 |
| V94 | Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system |
| 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 |
| D159 | Positive (+) connection (high bus), in engine compartment wiring harness |
| D160 | Positive (+) connection (low bus), in engine compartment wiring harness |
| • | CAN bus (data wire) |
| * | Models with manual gearbox |
| ** | Models with automatic gearbox |
Wiring Diagram AUDI A8 2002 - Engine cooling
| E87 | Control and display unit for air conditioner |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| J135 | Radiator fan 3rd speed relay |
| N39 | Radiator fan series resistor |
| S4 | Fuse in fuse carrier |
| S42 | Radiator fan single fuse |
| T2x | 2-pin connector, brown, at radiator fan |
| V7 | Radiator fan |
| 83 | Earth connection -1-, in front right wiring harness |
| 108 | Earth connection -2-, in front left wiring harness |
| A36 | Connection (75a), in dash panel wiring harness |
| A52 | Positive (+) connection 2 (30), in dash panel wiring harness |
| C23 | Connection (radiator fan speed I), in headlight/air conditioner wiring harness |
| E106 | Connection (30, radiator fan), in dash panel wiring harness |
| * | Dash panel carrier, left |
Wiring Diagram AUDI A8 2002 - Dash panel insert - alternator warning lamp - oil pressure warning lamp - coolant temperature gauge - fuel pump
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G6 | Fuel pump (pre-supply pump) |
| G169 | Fuel gauge sender 2 |
| G266 | Oil level thermo sender |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T10a | 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 |
| T32b | 32-pin connector, grey, on dash panel insert |
| 49 | Earth point, near fuel pump |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| # | Sender earth output |
Wiring Diagram AUDI A8 2002 - Dash panel insert - speedometer - speedometer sender
| G21 | Speedometer |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| J285 | Control unit with display in dash panel insert |
| S1 | Fuse in fuse carrier |
| S4 | Fuse in fuse carrier |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 102 | Earth connection, in gearbox wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| E103 | Connection (15a), in dash panel wiring harness, right |
| E105 | Earth connection, in dash panel wiring harness, left |
| L11 | Connection -3-, in air conditioner wiring harness |
| * | Models with manual gearbox |
| ** | Models with automatic gearbox |
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