| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J519 | Onboard supply control unit |
| S162 | Fuse 1 (30) in fuse holder on battery |
| S163 | Fuse 2 (30) in fuse holder on battery |
| S268 | Fuse 10 (30) in fuse holder on battery |
| T1a | Single pin connector, on starter |
| T2x | 2-pin connector, near dual tone horn |
| T2y | 2-pin connector, on alternator |
| T6q | 6-connector, blue, in left engine compartment |
| T11d | 11-pin connector, white, in left engine compartment |
| T12a | 12-pin connector, white, in left engine compartment |
| T18a | 18-pin connector, on onboard supply control unit |
| 1 | Earth strap, battery - body |
| 507 | Screw connection (30), on fuse holder on battery |
| 621 | Earth point, onboard supply battery |
| D | Ignition/starter switch |
| E19 | Parking light switch |
| J519 | Onboard supply control unit |
| SB10 | Fuse 10 on fuse holder B |
| T8a | 8-connector, on ignition/starter switch |
| T18a | 18-pin connector, on onboard supply control unit |
| T41a | 41-pin connector, on turn signal switch |
| B111 | Positive connection 1 (30a), in interior wiring harness |
| B491 | Positive connection (75), in interior wiring harness |
| B500 | Connection (86s), in interior wiring harness |
| B503 | Positive connection 7 (30a), in interior wiring harness |
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| SB26 | Fuse 26 on fuse holder B |
| SB29 | Fuse 29 on fuse holder B |
| T3c | 3-pin connector, grey, in left engine compartment |
| T16a | 16-pin connector, on onboard supply control unit |
| T16b | 16-pin connector, near relay station, self-diagnosis connection |
| T18a | 18-pin connector, on onboard supply control unit |
| TV3 | Terminal 30a wiring junction |
| 284 | Earth connection 6, in interior wiring harness |
| B150 | Positive connection 2 (30a), in interior wiring harness |
| B159 | Connection (diagnosis), in interior wiring harness |
| B231 | Positive connection 5 (30a), in interior wiring harness |
| G28 | Engine speed sender |
| G40 | Hall sender |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| G212 | Exhaust gas recirculation potentiometer |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| N18 | Exhaust gas recirculation valve |
| T3g | 3-pin connector, on Hall sender |
| T3h | 3-pin connector, in right engine compartment |
| T4i | 4-pin connector, on intake manifold pressure sender |
| T6aq | 6-pin connector, on exhaust gas recirculation potentiometer |
| T14a | 14-pin connector, in left engine compartment |
| T40c | 40-pin connector, on 4MV injection system control unit |
| 339 | Earth connection (sender earth), in injection system wiring harness |
| E46 | Positive connection 1 (5 Volt), in injection system wiring harness |
| G61 | Knock sensor 1 |
| G186 | Throttle valve drive for electric throttle (EPC) |
| G187 | Throttle valve drive angle sender 1 for electric throttle (EPC) |
| G188 | Throttle valve drive angle sender 2 for electric throttle (EPC) |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| SB37 | Fuse 37 on fuse holder B |
| T2w | 2-pin connector, on knock sensor 1 |
| T6v | 6-pin connector, on throttle valve drive for electric throttle |
| T6p | 6-connector, yellow, in left engine compartment |
| T40c | 40-pin connector, on 4MV injection system control unit |
| B165 | Positive connection 2 (15), in interior wiring harness |
| E52 | Connection (screening), in injection system wiring harness |
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| SB5 | Fuse 5 on fuse holder B |
| T6p | 6-connector, yellow, in left engine compartment |
| T6q | 6-connector, blue, in left engine compartment |
| T6z | 6-pin connector, in accelerator position sender |
| T11a | 11-pin connector, in left engine compartment |
| T11d | 11-pin connector, white, in left engine compartment |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| B151 | Positive connection 3 (30a), in interior wiring harness |
| G22 | Speedometer sender |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| T3i | 3-pin connector, on speedometer |
| T11d | 11-pin connector, white, in left engine compartment |
| T14a | 14-pin connector, in left engine compartment |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| 13 | Earth point, on right in engine compartment |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 331 | Earth connection, in injection system wiring harness |
| B492 | Positive connection 3 (15), in interior wiring harness |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| SB45 | Fuse 45 on fuse holder B |
| T2ab | 2-pin connector, on injector, cylinder 1 |
| T2ac | 2-pin connector, on injector, cylinder 2 |
| T2ad | 2-pin connector, on injector, cylinder 3 |
| T2af | 2-pin connector, on injector, cylinder 4 |
| T6p | 6-connector, yellow, in left engine compartment |
| T14a | 14-pin connector, in left engine compartment |
| T40c | 40-pin connector, on 4MV injection system control unit |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| B163 | Positive connection 1 (15), in interior wiring harness |
| E48 | Connection (injectors), in injection system wiring harness |
| G130 | Lambda probe after catalytic converter |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| T4al | 4-pin connector, in left engine compartment |
| T6q | 6-connector, blue, in left engine compartment |
| T11a | 11-pin connector, in left engine compartment |
| T11b | 11-pin connector, red, in left engine compartment |
| T11d | 11-pin connector, white, in left engine compartment |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| Z29 | Lambda probe 1 heater after catalytic converter |
| B178 | Connection (speed signal), in interior wiring harness |
| D73 | Positive connection (54), in engine compartment wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| G39 | Lambda probe |
| G62 | Coolant temperature sender |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| N70 | Ignition coil 1 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T2z | 2-pin connector, on coolant temperature display sender |
| T4ag | 4-pin connector, on ignition coil 1 with output stage |
| T6au | 6-pin connector, on lambda probe |
| T14a | 14-pin connector, in left engine compartment |
| T40c | 40-pin connector, on 4MV injection system control unit |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| Z19 | Lambda probe heater |
| 8 | Earth strap, cylinder head cover - ignition coil |
| E29 | Connection, in engine wiring harness |
| F1 | Positive connection (15), in electronic ignition wiring harness |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| 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 |
| T4ah | 4-pin connector, on ignition coil 2 with output stage |
| T4ai | 4-pin connector, on ignition coil 3 with output stage |
| T4aj | 4-pin connector, on ignition coil 4 with output stage |
| T40c | 40-pin connector, on 4MV injection system control unit |
| 8 | Earth strap, cylinder head cover - ignition coil |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| M9 | Left brake light bulb |
| N80 | Activated charcoal filter system solenoid valve 1 |
| SB4 | Fuse 4 on fuse holder B |
| T2o | 2-pin connector, on active charcoal filter system solenoid valve 1 |
| T4c | 4-pin connector, on brake light switch |
| T4p | 4-pin connector, on clutch pedal switch |
| T6b | 6-pin connector, on left rear fog light |
| T6q | 6-connector, blue, in left engine compartment |
| T11b | 11-pin connector, red, in left engine compartment |
| T16a | 16-pin connector, on onboard supply control unit |
| T18a | 18-pin connector, on onboard supply control unit |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| B131 | Connection (54), in interior wiring harness |
| B135 | Positive connection 1 (15a), in interior wiring harness |
| J17 | Fuel pump relay |
| J519 | Onboard supply control unit |
| SB9 | Fuse 9 on fuse holder B |
| SB14 | Fuse 14 on fuse holder B |
| SB25 | Fuse 25 on fuse holder B |
| SB41 | Fuse 41 on fuse holder B |
| T6l | 6-pin connector, on fuel pump relay |
| T16a | 16-pin connector, on onboard supply control unit |
| T18a | 18-pin connector, on onboard supply control unit |
| 238 | Earth connection 1, in interior wiring harness |
| 249 | Earth connection 2, in interior wiring harness |
| 278 | Earth connection 4, in interior wiring harness |
| 606 | Earth point, under the centre console near selector lever |
| B146 | Positive connection 1 (87), in interior wiring harness |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| J519 | Onboard supply control unit |
| J643 | Fuel supply relay |
| T4a | 4-pin connector, under rear seat, right |
| T5f | 5-pin connector, on fuel supply relay |
| T16a | 16-pin connector, on onboard supply control unit |
| B146 | Positive connection 1 (87), in interior wiring harness |
| B229 | Connection (high bus), in interior wiring harness |
| B230 | Connection (low bus), in interior wiring harness |
| F22 | Oil pressure switch |
| G32 | Coolant shortage indicator sender |
| J285 | Control unit in dash panel insert |
| J519 | Onboard supply control unit |
| K | Dash panel insert |
| K3 | Oil pressure warning lamp |
| L10 | Dash panel insert illumination bulb |
| T1b | Single pin connector, on oil pressure switch (0.3 bar) |
| T2n | 2-pin connector, on coolant shortage indicator sender |
| T6p | 6-connector, yellow, in left engine compartment |
| T8b | 8-connector, on dash panel insert |
| T11b | 11-pin connector, red, in left engine compartment |
| T14a | 14-pin connector, in left engine compartment |
| T32a | 32-pin connector, on dash panel insert |
| 42 | Earth point, next to steering column |
| 279 | Earth connection 5, in interior wiring harness |
| 285 | Earth connection 7, in interior wiring harness |
| 327 | Earth connection (sender earth), in engine compartment wiring harness |
| 401 | Earth connection (sender earth), in interior wiring harness |
| 606 | Earth point, under the centre console near selector lever |
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