| A | Battery |
| B | Starter |
| CX1 | Alternator with voltage regulator |
| J519 | Onboard supply control unit |
| J682 | Terminal 50 voltage supply relay |
| J710 | Voltage supply relay 2 |
| T1v | Single connector |
| T2gc | 2-pin connector |
| T4a | 4-pin connector, near starter |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| 12 | Earth point, on left in engine compartment |
| B344 | Connection 1 (61), in main wiring harness |
| B571 | Connection 38, in main wiring harness |
| * | Up to August 2012 |
| *2 | From August 2012 |
| J329 | Terminal 15 voltage supply relay |
| J496 | Additional coolant pump relay |
| SA | Fuse holder A |
| SA1 | Fuse 1 in fuse holder A |
| SA3 | Fuse 3 in fuse holder A |
| SA6 | Fuse 6 in fuse holder A |
| SB | Fuse holder B |
| SC | Fuse holder C |
| SC10 | Fuse 10 on fuse holder C |
| SC36 | Fuse 36 on fuse holder C |
| T40 | 40-pin connector |
| 249 | Earth connection 2, in interior wiring harness |
| 508 | Threaded connection (30) on E-box |
| 639 | Earth point, left A-pillar |
| B290 | Positive connection 14 (15a) in main wiring harness |
| B291 | Positive connection 15 (15a) in main wiring harness |
| B334 | Positive connection 20 (30a) in main wiring harness |
| B571 | Connection 38, in main wiring harness |
| * | From October 2011 |
| J623 | Engine control unit, central in plenum chamber |
| SB | Fuse holder B |
| SB10 | Fuse 10 on fuse holder B |
| SB14 | Fuse 14 on fuse holder B |
| SB18 | Fuse 18 on fuse holder B |
| SB20 | Fuse 20 on fuse holder B |
| SB23 | Fuse 23 on fuse holder B |
| SB24 | Fuse 24 on fuse holder B |
| T14a | 14-pin connector |
| T40 | 40-pin connector |
| T94 | 94-pin connector |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 645 | Earth point 1, on bulkhead |
| 673 | Earth point 3, on front of left longitudinal member |
| B358 | Positive connection 9 (87a) in main wiring harness |
| B632 | Connection (interior light, 31), in main wiring harness |
| D183 | Connection 4 (87a) in engine compartment wiring harness |
| * | Up to August 2012 |
| *2 | From August 2012 |
| J623 | Engine control unit, central in plenum chamber |
| 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 |
| T4ba | 4-pin connector |
| T4bb | 4-pin connector |
| T4bc | 4-pin connector |
| T4bd | 4-pin connector |
| T14a | 14-pin connector |
| T60 | 60-pin connector |
| T94 | 94-pin connector |
| 15 | Earth point, on cylinder head |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 281 | Earth point 1, engine prewiring harness |
| D181 | Connection 2 (87a) in engine compartment wiring harness |
| G28 | Engine speed sender |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| G520 | Intake air temperature sender 3 |
| G583 | Intake manifold pressure sender 3 |
| J623 | Engine control unit, central in plenum chamber |
| T3bq | 3-pin connector |
| T4bl | 4-pin connector |
| T4nq | 4-pin connector |
| T60 | 60-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D101 | Connection 1 in engine compartment wiring harness |
| D102 | Connection 2 in engine compartment wiring harness |
| D9 | Electronic ignition lock |
| J527 | Steering column electronics control unit |
| J623 | Engine control unit, central in plenum chamber |
| J743 | Mechatronic unit for dual clutch gearbox |
| N75 | Charge pressure control solenoid valve |
| N80 | Activated charcoal filter solenoid valve 1 |
| N205 | Camshaft control valve 1 |
| N249 | Turbocharger air recirculation valve |
| T14a | 14-pin connector |
| T16f | 16-pin connector |
| T16o | 16-pin connector |
| T25 | 25-pin connector |
| T60 | 60-pin connector |
| T94 | 94-pin connector |
| B441 | Connection (CCS), in main wiring harness |
| B729 | Connection 1 (50), in main wiring harness |
| D109 | Connection 7 in engine compartment wiring harness |
| D180 | Connection (87a), in engine compartment wiring harness |
| * | According to equipment |
| F | Brake light switch |
| J623 | Engine control unit, central in plenum chamber |
| N276 | Fuel pressure regulating valve |
| T4f | 4-pin connector |
| T14a | 14-pin connector |
| T60 | 60-pin connector |
| T94 | 94-pin connector |
| 398 | Earth connection 33, in main wiring harness |
| B335 | Connection 1 (54), in main wiring harness |
| B383 | Connection 1 (powertrain CAN bus, high), in main wiring harness |
| B390 | Connection 1 (powertrain CAN bus, low), in main wiring harness |
| B509 | Connection 3 (diagnosis), in main wiring harness |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| J533 | Data bus diagnostic interface |
| J538 | Fuel pump control unit |
| T5a | 5-pin connector |
| T10p | 10-pin connector |
| T16d | 16-pin connector, on diagnostic connection |
| T20e | 20-pin connector |
| 78 | Earth point, lower part of right B-pillar |
| 295 | Earth connection 10, in interior wiring harness |
| B383 | Connection 1 (powertrain CAN bus, high), in main wiring harness |
| B390 | Connection 1 (powertrain CAN bus, low), in main wiring harness |
| B713 | Connection 1 (CAN bus diagnosis, high), in main wiring harness |
| B714 | Connection 1 (CAN bus diagnosis, low), in main wiring harness |
| F1 | Oil pressure switch |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| G32 | Coolant shortage indicator sender |
| H3 | Buzzer and gong |
| J285 | Control unit in dash panel insert |
| K | Dash panel insert |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K31 | Cruise control system warning lamp |
| K38 | Oil level warning lamp |
| K105 | Reserve fuel warning lamp |
| K132 | Electronic power control fault lamp |
| T14a | 14-pin connector, on left in engine compartment |
| T32c | 32-pin connector |
| 295 | Earth connection 10, in interior wiring harness |
| B708 | Connection 1 (dash panel insert CAN bus high) in main wiring harness |
| B709 | Connection 1 (dash panel insert CAN bus low) in main wiring harness |
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