| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition starter switch |
| F18 | Radiator fan thermal switch |
| J519 | Vehicle voltage control unit |
| SA1 | Fuse 1 on fuse holder A |
| SA8 | Fuse 8 on fuse holder A |
| T2w | 2-pin connector, in the holder on the gearbox |
| T3e | 3-pin connector, in the holder on the left radiator |
| T3h | 3-pin connector, on radiator fan thermal switch |
| T8a | 8-pin connector, at ignition starter switch |
| T18a | 18-pin connector, at onboard supply control unit (brown) |
| V7 | Radiator fan |
| 672 | Earth point 2 at front left longitudinal member |
| B344 | Connection 1 (61) in main wiring harness |
| * | not valid for vehicles with automatic gearbox |
| Radiator fan thermal switch and radiator fan depending upon optional equipment (not valid for vehicles with Climatic / Climatronic) |
| G28 | Engine speed sender |
| G62 | Coolant temperature sender |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| N30 | Injector for cylinder 1 |
| N31 | Injector for cylinder 2 |
| N32 | Injector for cylinder 3 |
| N33 | Injector for cylinder 4 |
| T3m | 3-pin connector, at engine speed sender |
| T28c | 28-pin connector, at engine control unit |
| T52a | 52-pin connector, at engine control unit |
| 474 | Earth connection (sender earth), in engine wiring harness |
| B383 | Connection 1 (drive train CAN bus High) in main wiring harness |
| B390 | Connection 1 (drive train CAN bus Low) in main wiring harness |
| D140 | Connection (injectors) in engine wiring harness |
| D141 | Connection (5V) in engine wiring harness |
| G39 | Lambda probe |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| G130 | Lambda probe after catalytic converter |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| T4am | 4-pin connector, at intake manifold pressure and intake air temperature sender |
| T4j | 4-pin connector, near the lambda probe |
| T4k | 4-pin connector, near the lambda probe after catalytic converter |
| T28c | 28-pin connector, at engine control unit |
| T52a | 52-pin connector, at engine control unit |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe 1 heater after catalytic converter |
| 474 | Earth connection (sender earth), in engine wiring harness |
| B441 | Connection (CCS) in main wiring harness |
| D141 | Connection (5V) in engine wiring harness |
| * | for vehicles with CCS |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender 2 |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| T4d | 4-pin connector, at brake pedal switch |
| T4h | 4-pin connector, at clutch pedal switch |
| T6u | 8-pin connector, at accelerator pedal position sender |
| T52a | 52-pin connector, at engine control unit |
| B279 | Positive connection 3 (15a) in main wiring harness |
| B335 | Connection 1 (54) in main wiring harness |
| B633 | Connection (brake pedal switch) in main wiring harness |
| * | not valid for vehicles with automatic gearbox |
| G40 | Hall sender |
| G61 | Knock sensor 1 |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| T3j | 3-pin connector, at Hall sender |
| T14a | 14-pin connector in engine compartment, left (connection engine wiring harness / main wiring harness) |
| T16b | 16-pin connector, at onboard supply control unit (black) |
| T28c | 28-pin connector, at engine control unit |
| T52a | 52-pin connector, at engine control unit |
| 12 | Earth point on left in engine compartment |
| 281 | Earth connection 1 in engine wiring harness |
| 376 | Earth connection 11 in main wiring harness |
| 474 | Earth connection (sender earth), in engine wiring harness |
| B625 | Connection (diagnosis wire K), in main wiring harness |
| D174 | Connection 2 (5V), in engine wiring harness |
| G186 | Throttle valve drive for electronic power control |
| G187 | Throttle valve drive angle sender 1 for electric power control |
| G188 | Throttle valve drive angle sender 2 for electric power control |
| J271 | Motronic current supply relay |
| J338 | Throttle valve control unit |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| T6t | 3-pin connector, on the throttle valve control unit |
| T28c | 28-pin connector, at engine control unit |
| T52a | 52-pin connector, at engine control unit |
| B317 | Positive connection 3 (30a) in main wiring harness |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| N70 | Ignition coil 1 with output stage |
| N127 | Ignition coil 2 with output stage |
| Q | Spark plug |
| T4l | 4-pin connector at ignition coil 1 |
| T4m | 4-pin connector at ignition coil 2 |
| T28c | 28-pin connector, at engine control unit |
| 19 | Earth point near ignition coil |
| 281 | Earth connection 1 in engine wiring harness |
| 306 | Earth connection (ignition coils) in engine wiring harness |
| D189 | Connection (87a) in engine wiring harness |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| N291 | Ignition coil 3 with output stage |
| N292 | Ignition coil 4 with output stage |
| Q | Spark plug |
| T4n | 4-pin connector at ignition coil 3 |
| T4o | 4-pin connector at ignition coil 4 |
| T14a | 14-pin connector in engine compartment, left (connection engine wiring harness / main wiring harness) |
| T28c | 28-pin connector, at engine control unit |
| 281 | Earth connection 1 in engine wiring harness |
| 306 | Earth connection (ignition coils) in engine wiring harness |
| D189 | Connection (87a) in engine wiring harness |
| G266 | Oil level and oil temperature sender |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| N80 | Activated charcoal filter system solenoid valve 1 |
| N205 | Camshaft timing adjustment valve 1 |
| T3f | 3-pin connector at oil level and oil temperature sender |
| T14a | 14-pin connector in engine compartment, left (connection engine wiring harness / main wiring harness) |
| T28c | 28-pin connector, at engine control unit |
| T52a | 52-pin connector, at engine control unit |
| 281 | Earth connection 1 in engine wiring harness |
| D196 | Connection 2 (87a), in engine wiring harness |
| * | for vehicles with extended servicing intervals (ESI) |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G6 | Fuel pump for predelivery |
| G21 | Speedometer |
| G22 | Speedometer sender |
| J285 | Control unit in dash panel insert |
| J519 | Vehicle voltage control unit |
| K | Dash panel insert |
| K3 | Oil pressure warning light |
| K38 | Oil level warning light |
| K83 | Exhaust emissions warning lamp |
| K105 | Fuel reserve warning light |
| K132 | Electronic power control fault lamp |
| T3l | 3-pin connector, on speedometer sender |
| T4f | 4-pin connector, on the fuel pump for predelivery |
| T14a | 14-pin connector in engine compartment, left (connection engine wiring harness / main wiring harness) |
| T32a | 32-pin connector, at dash panel insert |
| Y4 | Odometer display |
| 370 | Earth connection 5 in main wiring harness |
| 410 | Earth connection 1 (sender earth) in main wiring harness |
| B464 | Connection (speed signal) in main wiring harness |
| B626 | Positive connection 2 (15) in main wiring harness |
| * | for vehicles with extended servicing intervals (ESI) |
| ** | not valid for vehicles with ABS/ ABS with TCS/ ABS with EDL and TCS/ESP |
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