| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| T1t | Single connector, black, in engine compartment |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| 11 | Earth point, in battery box |
| 12 | Earth point, in engine compartment, left |
| 83 | Earth connection -1-, in front right wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| A86 | Connection (50a), in dash panel wiring harness |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N75 | Charge pressure control solenoid valve |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| N83 | Injector, cylinder 5 |
| N84 | Injector, cylinder 6 |
| S228 | Fuse in fuse box |
| S229 | Fuse in fuse box |
| S234 | Fuse in fuse box |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10ar | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| A151 | Connection -4- (87), in dash panel wiring harness |
| A152 | Connection -5- (87), in dash panel wiring harness |
| D22 | Connection (via fuse 234), in front right wiring harness |
| D23 | Connection (via fuse 229), in front right wiring harness |
| * | Only applies to models with 2.7 litre engine, 280 kW, Motronic |
| G70 | Air mass meter |
| G235 | Exhaust gas temperature sender 1 |
| G236 | Exhaust gas temperature sender 2 |
| J220 | Motronic control unit |
| N8 | By-pass air cut-off valve (central idling) |
| N112 | Secondary air inlet valve |
| N205 | Inlet camshaft timing adjustment valve -1- |
| N208 | Inlet camshaft timing adjustment valve -2- |
| N335 | Variable intake manifold change-over valve |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10ar | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| 83 | Earth connection -1-, in front right wiring harness |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| A45 | Connection (engine speed signal), in dash panel wiring harness |
| D23 | Connection (via fuse 229), in front right wiring harness |
| D101 | Connection -1-, in engine compartment wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
| * | Only applies to models with 2.7 litre engine, 280 kW, Motronic |
| ** | Only applies to models with 2.7 litre engine, 195 kW, Motronic |
| G130 | Lambda probe downstream of catalytic converter |
| G131 | Lambda probe II downstream of catalytic converter |
| J220 | Motronic control unit |
| J299 | Secondary air pump relay |
| S130 | Secondary air pump fuse |
| T3aa | 3-pin connector, white, connector point, electronics box, plenum chamber |
| T4w | 4-pin connector, green, in engine compartment, right |
| T4x | 4-pin connector, brown, in engine compartment, left |
| V101 | Secondary air pump motor |
| Z29 | Lambda probe 1 heater, downstream of catalytic converter |
| Z30 | Lambda probe 2 heater, downstream of catalytic converter |
| 12 | Earth point, in engine compartment, left |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| A40 | Positive (+) connection -1- (30), in dash panel wiring harness |
| * | Only applies to models with 2.7 litre engine, 280 kW, Motronic |
| E87 | Control and display unit for air conditioner/Climatronic |
| G39 | Lambda probe |
| G108 | Lambda probe II |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| J338 | Throttle valve control unit |
| T3au | 3-pin connector, red, connector point, electronics box, plenum chamber |
| T4y | 4-pin connector, black, in engine compartment, right |
| T4z | 4-pin connector, black, in engine compartment, left |
| T15m | 15-pin connector, red, connector point, electronics box, plenum chamber |
| Z19 | Lambda probe heater |
| Z28 | Lambda probe 2 heater |
| 83 | Earth connection -1-, in front right wiring harness |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| * | Only models with air conditioner |
| ** | Only applies to models with 2.7 litre engine, 195 kW, Motronic |
| E45 | Cruise control system switch |
| G2 | Coolant temperature sender |
| G42 | Intake air temperature sender |
| G61 | Knock sensor I |
| G62 | Coolant temperature sender |
| G66 | Knock sensor II |
| J220 | Motronic control unit |
| T2af | 2-pin connector, black, in engine compartment, right |
| T3bg | 3-pin connector, brown, in engine compartment, left |
| T3bh | 3-pin connector, brown, in engine compartment, right |
| T6y | 6-pin connector, black, next to steering column |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T15 | 15-pin connector, white, connector point, electronics box, plenum chamber |
| 104 | Earth connection in front right wiring harness (sensor earth) |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| 316 | Earth connection (sender earth) -2-, in engine wiring harness |
| * | Only models with cruise control system |
| G28 | Engine speed sender |
| G31 | Charge air pressure sender |
| G40 | Hall sender |
| G79 | Accelerator pedal position sender |
| G163 | Hall sender 2 |
| G185 | Accelerator pedal position sender -2- |
| J220 | Motronic control unit |
| T3m | 3-pin connector, grey, in engine compartment, left |
| T15 | 15-pin connector, white, connector point, electronics box, plenum chamber |
| T15m | 15-pin connector, red, connector point, electronics box, plenum chamber |
| 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 |
| D141 | Connection (5V), in engine prewiring wiring harness |
| • | CAN bus (data bus) |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| J220 | Motronic control unit |
| M9 | Brake light bulb, left |
| M10 | Brake light bulb, right |
| M25 | High level brake light bulb |
| N | Ignition coil |
| N122 | Final output stage |
| N128 | Ignition coil 2 |
| N158 | Ignition coil 3 |
| P | Spark plug connector |
| Q | Spark plugs |
| T3w | 3-pin connector, black, on output stage |
| T4af | 4-pin connector, black, on output stage |
| T15 | 15-pin connector, white, connector point, electronics box, plenum chamber |
| 18 | Earth point, on cylinder block |
| 83 | Earth connection -1-, in front right wiring harness |
| A18 | Connection (54), in dash panel wiring harness |
| A104 | Positive (+) connection -2- (15), in dash panel wiring harness |
| A106 | Connection -2- (86s), in dash panel wiring harness |
| D14 | Connection (ignition coil - control unit), in front right wiring harness |
| D | Ignition/starter switch |
| F4 | Reversing light switch |
| J220 | Motronic control unit |
| N163 | Ignition coil 4 |
| N164 | Ignition coil 5 |
| N189 | Ignition coil 6 |
| N192 | Final output stage 2 |
| P | Spark plug connector |
| Q | Spark plugs |
| S5 | Fuse in fuse box/relay plate |
| S7 | Fuse in fuse box/relay plate |
| S13 | Fuse in fuse box/relay plate |
| S231 | Fuse in fuse box |
| S232 | Fuse in fuse box |
| T3x | 3-pin connector, brown, on output stage |
| T4g | 4-pin connector, brown, on output stage |
| T10ar | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| 18 | Earth point, on cylinder block |
| 83 | Earth connection -1-, in front right wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| D14 | Connection (ignition coil - control unit), in front right wiring harness |
| F66 | Coolant shortage indicator switch |
| G | Fuel gauge sender |
| G6 | Fuel pump (pre-supply pump) |
| J218 | Combi-processor in dash panel insert |
| J533 | Data bus diagnostic interface |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| T10a | 10-pin connector, brown, left connector point, A pillar |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10ao | 10-pin connector, white, left connector point, A pillar |
| T10ar | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T16 | 16-pin connector, diagnostic connector |
| 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 |
| A79 | Connection (hot light switch), in dash panel wiring harness |
| * | Output for signal earth |
| • | CAN bus (data bus) |
| F1 | Oil pressure switch |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| G266 | Oil level/oil temperature sender |
| J218 | Combi-processor in dash panel insert |
| K2 | Alternator warning lamp |
| K132 | Electronic power control fault lamp |
| K149 | Engine electronics warning lamp |
| T2x | 2-pin connector, black, in engine compartment, left |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10m | 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 |
| 83 | Earth connection -1-, in front right wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
