| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| F194 | Clutch pedal switch |
| J434 | Starter inhibitor relay (clutch pedal switch) |
| S88 | Strip fuse (main fuse) |
| T1d | Single connector, black, engine compartment, left |
| T2 | 2-pin connector, black, engine compartment, right |
| T17e | 17-pin connector, white, connector point, electronics box, plenum chamber |
| 11 | Earth point, in battery box |
| 238 | Earth connection -1-, in interior wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| * | Only applies to models with manual gearbox |
| ** | ⇒ Applicable Current Flow Diagram: Automatic gearbox (multitronic 01J or AG5) |
| D | Ignition/starter switch |
| J17 | Fuel pump relay |
| S5 | Fuse in fuse box/relay plate |
| S7 | Fuse in fuse box/relay plate |
| S9 | Fuse in fuse box/relay plate |
| S14 | Fuse in fuse box/relay plate |
| S228 | Fuse in fuse box |
| S232 | Fuse in fuse box |
| S234 | Fuse in fuse box |
| S243 | Fuse in fuse box |
| T10a | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| 501 | Screw connection -2- (30), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A52 | Positive (+) connection -2- (30), in dash panel wiring harness |
| A57 | Positive (+) connection -3- (30), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| A99 | Connection -1- (87), in dash panel wiring harness |
| A152 | Connection -5- (87), in dash panel wiring harness |
| * | Only applies to models with manual gearbox |
| ** | Only applies to models with automatic gearbox (multitronic 01J or AG5) |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J271 | Motronic current supply relay |
| S4 | Fuse in fuse box/relay plate |
| S229 | Fuse in fuse box |
| S282 | Engine electronics fuse |
| T17d | 17-pin connector, red, connector point, electronics box, plenum chamber |
| T17e | 17-pin connector, white, connector point, electronics box, plenum chamber |
| 12 | Earth point, in engine compartment, left |
| 83 | Earth connection -1-, in front right wiring harness |
| D50 | Positive (+) connection (30), in engine compartment wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| D173 | Connection (87), in engine wiring harness |
| * | Only applies to models with automatic gearbox (multitronic 01J) |
| ** | Only applies to models with five-speed automatic gearbox (AG5) |
| G70 | Air mass meter |
| G83 | Coolant temperature sender - radiator outlet |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| T10a | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10d | 10-pin connector, grey, connector point, A pillar, left |
| T17d | 17-pin connector, red, connector point, electronics box, plenum chamber |
| V144 | Fuel system diagnostic pump |
| D22 | Connection (via fuse 234), in front right wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
| F66 | Coolant shortage indicator switch |
| F265 | Map-controlled engine cooling thermostat |
| G2 | Coolant temperature sender |
| G31 | Charge air pressure sender |
| G42 | Intake air temperature sender |
| G62 | Coolant temperature sender |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| N75 | Charge pressure control solenoid valve |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| N112 | Secondary air inlet valve |
| N249 | Turbocharger divert air valve |
| T10 | 10-pin connector, black, connector point, electronics box, plenum chamber |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| 327 | Earth connection (sender earth), in engine compartment wiring harness |
| D22 | Connection (via fuse 234), in front right wiring harness |
| G40 | Hall sender |
| G294 | Brake servo pressure sensor |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J299 | Secondary air pump relay |
| J569 | Brake servo relay |
| N205 | Inlet camshaft timing adjustment valve -1- |
| S130 | Secondary air pump fuse |
| T10 | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T17d | 17-pin connector, red, connector point, electronics box, plenum chamber |
| V101 | Secondary air pump motor |
| V192 | Vacuum pump for brakes |
| 12 | Earth point, in engine compartment, left |
| 83 | Earth connection -1-, in front right wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D141 | Connection (5V), in engine wiring harness |
| * | Only applies to models with automatic gearbox (multitronic 01J or AG5) |
| ** | Only applies to models with automatic gearbox (multitronic 01J) |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| J220 | Motronic control unit |
| J338 | Throttle valve module |
| J527 | Steering column electronics control unit |
| T16a | 16-pin connector, black, on steering column electronics control unit |
| T17e | 17-pin connector, white, connector point, electronics box, plenum chamber |
| A18 | Connection (54), in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| A154 | Connection (brake pedal switch), in dash panel wiring harness |
| * | Only applies to models with manual gearbox |
| G39 | Lambda probe |
| G130 | Lambda probe downstream of catalytic converter |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| T4 | 4-pin connector, brown, connector point, lambda probe (bulkhead) |
| T6 | 6-pin connector, black, connector point, lambda probe (bulkhead) |
| T17d | 17-pin connector, red, connector point, electronics box, plenum chamber |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe 1 heater, downstream of catalytic converter |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| 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 |
| T10 | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10a | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T16 | 16-pin connector, black, diagnostic connector |
| T17d | 17-pin connector, red, connector point, electronics box, plenum chamber |
| 18 | Earth point, on cylinder block |
| 83 | Earth connection -1-, in front right wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| D23 | Connection (via fuse 229), in front right wiring harness |
| * | Only applies to models with automatic gearbox (multitronic 01J) |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G6 | Fuel pump (pre-supply pump) |
| G169 | Fuel gauge sender -2- |
| G266 | Oil level/oil temperature sender |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| T10 | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10a | 10-pin connector, brown, 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 |
| 249 | Earth connection -2-, in interior wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| * | Only models with four-wheel drive |