| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| T1a | Single connector, blue, in engine compartment |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| 11 | Earth point, in battery box |
| A17 | Connection (61), in dash panel wiring harness |
| A86 | Positive (+) connection (50a), in dash panel wiring harness |
| * | Only models with manual gearbox |
| G70 | Air mass meter |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N80 | Activated charcoal filter system solenoid valve 1 |
| N156 | Intake manifold change-over valve |
| N205 | Inlet camshaft timing adjustment valve -1- |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10z | 10-pin connector, yellow, connector point, electronics box, plenum chamber |
| 83 | Earth connection -1-, in front right wiring harness |
| 121 | Earth connection -2-, in front right wiring harness |
| D22 | Positive (+) connection (87a for injectors), in engine compartment wiring harness, right |
| D23 | Positive (+) connection (87F), in engine compartment wiring harness, right |
| E15 | Heated rear window switch |
| G18 | Temperature sensor |
| G28 | Engine speed sender |
| J220 | Motronic control unit |
| T3m | 3-pin connector, grey, in engine compartment, left |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| 83 | Earth connection -1-, in front right wiring harness |
| 121 | Earth connection -2-, in front right wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A64 | Connection (rpm boost), in dash panel wiring harness |
| * | Does not apply to models with air conditioner |
| E87 | Control and display unit for air conditioner |
| G2 | Coolant temperature sender |
| G61 | Knock sensor I |
| G62 | Coolant temperature sender |
| G66 | Knock sensor II |
| J220 | Motronic control unit |
| T3o | 3-pin connector, green, in engine compartment, left |
| T3n | 3-pin connector, blue, in engine compartment, left |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10v | 10-pin connector, brown, right connector point, A pillar |
| T10z | 10-pin connector, yellow, connector point, electronics box, plenum chamber |
| 121 | Earth connection -2-, in front right wiring harness |
| 199 | Earth connection -3-, in dash panel wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A45 | Connection (engine speed signal), in dash panel wiring harness |
| * | Only models with automatic gearbox |
| ** | Only models with air conditioner |
| G40 | Hall sender |
| J189 | Auto-check system |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J226 | Starter inhibitor and reversing light relay |
| J338 | Throttle valve control unit |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10v | 10-pin connector, brown, right connector point, A pillar |
| T10x | 10-pin connector, blue, right connector point, A pillar |
| T10y | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D133 | Connection (Hall sender signal), in engine compartment wiring harness |
| * | Only models with automatic gearbox |
| ** | Only models with auto-check system |
| F4 | Reversing light switch |
| G39 | Lambda probe |
| J220 | Motronic control unit |
| N | Ignition coil 1 |
| N122 | Final output stage 1 |
| N128 | Ignition coil 2 |
| N192 | Final output stage 2 |
| P | Spark plug connector |
| Q | Spark plugs |
| T4y | 4-pin connector, black, in engine compartment, left |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| Z19 | Lambda probe heater |
| 83 | Earth connection -1-, in front right wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| A70 | Connection (15a, fuse 231), in dash panel wiring harness |
| D14 | Connection (ignition coil - control unit), in front right wiring harness |
| * | Only models with manual gearbox |
| F1 | Oil pressure switch |
| F66 | Coolant shortage indicator switch |
| G | Fuel gauge sender |
| G6 | Fuel pump |
| G8 | Oil temperature sender |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| J218 | Combi-processor in dash panel insert |
| K2 | Alternator warning lamp |
| T3ak | 3-pin connector, black, in engine compartment, left |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| T10a | 10-pin connector, brown, left connector point, A pillar |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 32 | Earth point, behind dash panel, left |
| 86 | Earth connection -1-, in rear wiring harness |
| 121 | Earth connection -2-, in front right wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A50 | Positive (+) connection (30as), in dash panel wiring harness |
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