| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | X-contact relief relay |
| T2k | 2-pin connector, on engine |
| T4l | 4-pin connector, on engine |
| T6l | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| 500 | Screw connection 1 (30), on relay plate |
| 501 | Screw connection 2 (30), on relay plate |
| 502 | Screw connection 1 (30a), on relay plate |
| A2 | Positive connection (15), in dash panel wiring harness |
| A32 | Positive connection (30), in dash panel wiring harness |
| * | only models with air conditioning system |
| ** | only models without air conditioning system |
| 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 |
| T6l | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, in left wiring harness |
| 15 | Earth point, on cylinder head |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 281 | Earth connection 1, in engine wiring harness |
| A104 | Positive connection 2 (15), in dash panel wiring harness |
| D10 | Positive connection (30), in front right wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| G27 | Engine temperature sender |
| G266 | Oil level and oil temperature sender |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| N323 | Ignition coil 5 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| V51 | Continued coolant circulation pump |
| T14a | 14-pin connector, in left wiring harness |
| 10 | Earth point, in plenum chamber |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 281 | Earth connection 1, in engine wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| * | only models with extended servicing intervals |
| G2 | Coolant temperature display sender |
| G61 | Knock sensor 1 |
| G62 | Coolant temperature display sender |
| G66 | Knock sensor 2 |
| J220 | Motronic control unit |
| T2r | 2-pin connector, on left of cylinder head |
| T3e | 3-pin connector, near intake manifold |
| T10d | 10-pin connector, green, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, in left wiring harness |
| 139 | Earth connection (sender earth), in Motronic wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 241 | Earth connection 2 engine earth, in engine wiring harness |
| G28 | Engine speed sender |
| G186 | Throttle valve drive (electric power control) |
| G187 | Throttle valve drive angle sender 1 for electric throttle |
| G188 | Throttle valve drive angle sender 2 for electric throttle |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| J338 | Throttle valve module |
| T3b | 3-pin connector, on radiator fan |
| T10 | 10-pin connector, orange, in connector protective housing, on left in plenum chamber |
| 220 | Earth connection (sender earth), in engine wiring harness |
| * | only models with multifunction display |
| F | Brake light switch |
| G70 | Air mass meter |
| J104 | ABS control unit with EDL |
| J220 | Motronic control unit |
| N112 | Secondary air inlet valve |
| V101 | Secondary air pump motor |
| T10d | 10-pin connector, green, in connector protective housing, on left in plenum chamber |
| T10e | 10-pin connector, black, in connector protective housing, on left in plenum chamber |
| 10 | Earth point, in plenum chamber |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| W1 | Positive connection 1 (54), in rear wiring harness |
| F36 | Clutch pedal switch |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| N75 | Charge pressure control solenoid valve |
| N156 | Variable intake manifold change-over valve |
| N205 | Inlet camshaft control valve 1 |
| T6l | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T10 | 10-pin connector, orange, in connector protective housing, on left in plenum chamber |
| T10d | 10-pin connector, green, in connector protective housing, on left in plenum chamber |
| A20 | Connection (15a), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| D102 | Connection 2, in engine compartment wiring harness |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| G32 | Coolant shortage indicator sender |
| S228 | Fuse on fuse holder |
| S234 | Fuse on fuse holder |
| S243 | Fuse on fuse holder |
| T6l | 6-pin connector, brown, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, in left wiring harness |
| 33 | Earth point, on right behind dash panel |
| 81 | Earth connection 1, in dash panel wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| 504 | Screw connection 1 (87F), on relay plate |
| A99 | Connection 1 (87), in dash panel wiring harness |
| A100 | Connection 2 (87), in dash panel wiring harness |
| F1 | Oil pressure switch |
| F4 | Reversing light switch |
| G22 | Speedometer |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K83 | Exhaust emissions warning lamp |
| K132 | Electric power control fault lamp |
| S7 | Fuse in relay plate fuse holder |
| T10 | 10-pin connector, orange, in connector protective housing, on left in plenum chamber |
| T14a | 14-pin connector, in left wiring harness |
| B163 | Positive connection 1 (15), in interior wiring harness |
| * | only models with multifunction display |