| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| F18 | Radiator fan thermal switch |
| K2 | Alternator warning lamp |
| S131 | Fuse in fuse holder on the battery |
| S132 | Fuse in fuse holder on the battery |
| S138 | Fuse in fuse holder on the battery |
| S164 | Fuse in fuse holder on the battery |
| T1a | 1-pin connector, at starter |
| T2f | 2-pin connector, at alternator |
| T2g | 2-pin connector, in the holder on the starter |
| T3f | 3-pin connector, on the fuse holder on the battery |
| T3g | 3-pin connector, at radiator fan thermal switch |
| T3h | 3-pin connector, in the holder on the left radiator |
| T6a | 6-pin connector, in plenum chamber (brown) |
| T8c | 8-pin connector, at ignition/starter switch |
| T10t | 10-pin connector, in plenum chamber (white) |
| V7 | Radiator fan |
| 12a | Earth point -2-, below the battery on the left |
| P1 | Positive connection (30), in fuse holder on the battery |
| * | only on vehicles with manual gearbox |
| ** | not valid for vehicles with air conditioning system or Climatronic |
| G28 | Engine speed sender |
| J217 | Control unit for automatic gearbox |
| J220 | Motronic control unit |
| J255 | Climatronic control unit |
| J293 | Radiator fan control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| T2a | 2-pin connector, at injector, cylinder 1 |
| T2b | 2-pin connector, at injector, cylinder 2 |
| T2c | 2-pin connector, at injector, cylinder 3 |
| T2d | 2-pin connector, at injector, cylinder 4 |
| T3l | 3-pin connector, at engine speed sender |
| T10a | 10-pin connector, in plenum chamber (orange) |
| T14a | 14-pin connector, at radiator fan control unit |
| T14b | 14-pin connector, on front left in engine compartment (black) |
| T40a | 40-pin connector, at engine control unit |
| T68a | 68-pin connector, at control unit for automatic gearbox |
| T81a | 81-pin connector, at engine control unit |
| D140 | Connection (injectors), in engine wiring harness |
| D142 | Connection, in engine prewiring wiring harness |
| L10 | Positive connection, in wiring harness behind dash panel, left |
| * | only on vehicles with air conditioning system |
| ** | only on vehicles with automatic gearbox |
| *** | only on vehicles with Climatronic |
| E45 | Cruise control system switch |
| E227 | Cruise control system (CCS) button (Set) |
| G31 | Charge air pressure sender |
| J220 | Motronic control unit |
| T4k | 4-pin connector, at charge air pressure sender |
| T10k | 10-pin connector, in plenum chamber (black) |
| T10v | 10-pin connector, at CCS switch |
| T40a | 40-pin connector, at engine control unit |
| T81a | 81-pin connector, at engine control unit |
| A20 | Positive connection (15a), in wiring harness behind dash panel |
| D141 | Connection (5V), in engine wiring harness |
| D142 | Connection, in engine prewiring wiring harness |
| Z40 | Positive connection (15, CCS), in wiring harness behind dash panel, left |
| only on vehicles with CCS |
| G39 | Lambda probe |
| G42 | Intake air temperature sender |
| G130 | Lambda probe after catalytic converter |
| J220 | Motronic control unit |
| N80 | Activated charcoal filter system solenoid valve |
| T2h | 2-pin connector, at intake air temperature sender |
| T2o | 2-pin connector, at activated charcoal filter system solenoid valve |
| T4e | 4-pin connector, near lambda probe after catalytic converter |
| T6z | 6-pin connector, near lambda probe |
| T10a | 10-pin connector, in plenum chamber (orange) |
| T40a | 40-pin connector, at engine control unit |
| T81a | 81-pin connector, at engine control unit |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe heater after catalytic converter |
| E32 | Connection (87), in engine compartment wiring harness |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch |
| G266 | Oil level/oil temperature sender |
| J220 | Motronic control unit |
| S13 | Fuse in fuse holder |
| T3r | 3-pin connector, at oil level/oil temperature sender |
| T4n | 4-pin connector, at brake pedal switch |
| T4w | 4-pin connector, at clutch pedal switch |
| T10k | 10-pin connector, in plenum chamber (black) |
| T10t | 10-pin connector, in plenum chamber (white) |
| T14b | 14-pin connector, on front left in engine compartment (black) |
| T81a | 81-pin connector, at engine control unit |
| 132 | Earth connection, in engine prewiring wiring harness |
| A18 | Connection (54), in wiring harness behind dash panel, left |
| A20 | Positive connection (15a), in wiring harness behind dash panel |
| * | only on vehicles with manual gearbox |
| J220 | Motronic control unit |
| J271 | Motronic current supply relay |
| J299 | Secondary air pump relay |
| N112 | Secondary air inlet valve |
| T2u | 2-pin connector, at secondary air inlet valve |
| T2v | 2-pin connector, at secondary air pump motor |
| T10t | 10-pin connector, in plenum chamber (white) |
| T81a | 81-pin connector, at engine control unit |
| V101 | Secondary air pump motor |
| 29 | Earth point, on right in plenum chamber |
| D78 | Positive connection (30a), in engine compartment wiring harness |
| E14 | Connection -1-, in Motronic wiring harness |
| E32 | Connection (87), in engine compartment wiring harness |
| * | Relay in engine compartment, left |
| G40 | Hall sender |
| G61 | Knock sensor I |
| G66 | Knock sensor II |
| J104 | ABS control unit with EDL and TCS/ESP |
| J217 | Control unit for automatic gearbox |
| J220 | Motronic control unit |
| T2s | 2-pin connector, at knock sensor I |
| T2t | 2-pin connector, at knock sensor Il |
| T3i | 3-pin connector, at Hall sender |
| T10t | 10-pin connector, in plenum chamber (white) |
| T40a | 40-pin connector, at engine control unit |
| T47a | 47-pin connector, at ABL control unit with EDS and TCS/ESP |
| T68a | 68-pin connector, at control unit for automatic gearbox |
| T81a | 81-pin connector, at engine control unit |
| 10 | Earth point, in plenum chamber |
| 85 | Earth connection, in engine compartment wiring harness |
| A121 | Connection (H bus), in wiring harness behind dash panel, left |
| A122 | Connection (L bus), in wiring harness behind dash panel, left |
| D141 | Connection (5V), in engine wiring harness |
| D142 | Connection, in engine prewiring wiring harness |
| D145 | Connection (knock sensors), in engine prewiring wiring harness |
| * | only on vehicles with automatic gearbox |
| ** | only for vehicles with ABS with EDL and TCS or ESP |
| F88 | Power assisted steering pressure switch |
| G22 | Speedometer sender |
| 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 |
| N75 | Charge pressure control solenoid valve |
| N205 | Camshaft timing adjustment valve |
| N249 | Turbocharger divert air valve |
| T2a | 2-pin connector, at power assisted steering pressure switch |
| T2g | 2-pin connector, at charge pressure control solenoid valve |
| T2i | 2-pin connector, at camshaft timing adjustment valve |
| T2y | 2-pin connector, at turbocharger divert air valve |
| T3j | 3-pin connector, at speedometer sender |
| T6l | 6-pin connector, at accelerator pedal position sender |
| T6r | 6-pin connector, on the throttle valve control unit |
| T10j | 10-pin connector, in plenum chamber (blue) |
| T14b | 14-pin connector, on front left in engine compartment (black) |
| T40a | 40-pin connector, at engine control unit |
| T81a | 81-pin connector, at engine control unit |
| B149 | Positive connection (15a), in wiring harness behind dash panel |
| E7 | Connection (87a), in engine wiring harness |
| G70 | Air mass meter |
| 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 plug |
| T2c | 2-pin connector, in left wiring duct (black) |
| T4g | 4-pin connector, at the ignition coil 1 |
| T4h | 4-pin connector, at the ignition coil 2 |
| T4i | 4-pin connector, at the ignition coil 3 |
| T4j | 4-pin connector, at the ignition coil 4 |
| T5n | 5-pin connector, at air mass meter |
| T40a | 40-pin connector, at engine control unit |
| T81a | 81-pin connector, at engine control unit |
| 19 | Earth point, near ignition coil |
| 132 | Earth connection, in engine prewiring wiring harness |
| 281 | Earth connection, in engine prewiring wiring harness |
| D22 | Connection (87), in engine wiring harness |
| E32 | Connection (87), in engine compartment wiring harness |
| J220 | Motronic control unit |
| J542 | Brake servo control unit |
| S283 | Brake vacuum pump fuse, brake, at relay holder |
| T6c | 6-pin connector, at the brake vacuum pump |
| T10a | 10-pin connector, in plenum chamber (orange) |
| T81a | 81-pin connector, at engine control unit |
| V192 | Vacuum pump for brakes |
| 81 | Earth connection, in wiring harness behind dash panel |
| A40 | Positive connection (30), in wiring harness behind dash panel, left |
| only on vehicles with automatic gearbox |
| J17 | Fuel pump relay |
| J234 | Airbag control unit |
| T6a | 6-pin connector, in plenum chamber (brown) |
| T14b | 14-pin connector, on front left in engine compartment (black) |
| T75a | 75-pin connector, at airbag control unit |
| 10 | Earth point, in plenum chamber |
| 132 | Earth connection, in engine prewiring wiring harness |
| A2 | Positive connection (15), in wiring harness behind dash panel |
| A13 | Connection (door contact switch), in wiring harness behind dash panel |
| A38 | Positive connection (15a), in wiring harness behind dash panel, left |
| A40 | Positive connection (30), in wiring harness behind dash panel, left |
| A99 | Connection (87), in wiring harness behind dash panel |
| A100 | Connection (87), in wiring harness behind dash panel, left |
| * | only on vehicles with disabling front passenger airbag |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G2 | Coolant temperature gauge sender |
| G5 | Rev. Counter |
| G6 | Fuel pump |
| G62 | Coolant temperature sender |
| J218 | Combi-processor in dash panel insert |
| K | Dash panel insert |
| K3 | Oil pressure warning lamp |
| K16 | Reserve fuel warning lamp |
| K38 | Oil level warning lamp |
| T4a | 4-pin connector, on the fuel pump |
| T4i | 4-pin connector, at coolant temperature sender |
| T14b | 14-pin connector, on front left in engine compartment (black) |
| T32a | 32-pin connector, at dash panel insert (blue) |
| T32b | 32-pin connector, at dash panel insert (green) |
| 81 | Earth connection, in wiring harness behind dash panel |
| 110 | Earth connection, in wiring harness behind dash panel |
| A27 | Connection (speed signal), in wiring harness behind dash panel, left |
| D142 | Connection, in engine prewiring wiring harness |
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