| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| S88 | Strip fuse |
| S204 | Fuse -1- (30) |
| T17b | 17-pin connector, white, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| 65 | Earth point, left longitudinal member, rear |
| 500 | Screw connection -1- (30), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A86 | Connection (50a), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| B156 | Positive (+) connection (30a), in interior wiring harness |
| B177 | Connection (61), in interior wiring harness |
| P2 | Positive (+) connection (30), in battery wiring harness |
| J17 | Fuel pump relay |
| J234 | Airbag control unit |
| J537 | 4LV (injection system) control unit |
| SB18 | Fuse -18- on fuse box |
| SB19 | Fuse -19- on fuse box |
| SB20 | Fuse -20- on fuse box |
| SB31 | Fuse -31- on fuse box |
| SB38 | Fuse -38- on fuse box |
| SB45 | Fuse -45- on fuse box |
| T17c | 17-pin connector, black, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| 249 | Earth connection -2-, in interior wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| G39 | Lambda probe |
| G130 | Lambda probe downstream of catalytic converter |
| J537 | 4LV (injection system) 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 |
| T4a | 4-pin connector, brown, in electronics box, footwell, left |
| T6b | 6-pin connector, black, in engine compartment, right |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe 1 heater, downstream of catalytic converter |
| D80 | Positive (+) connection (87a - for activated charcoal filter system solenoid valve), in engine compartment wiring harness |
| D140 | Connection (injectors), in engine prewiring wiring harness |
| E87 | Control and display unit for air conditioner/Climatronic |
| G186 | Throttle valve drive (electric power control) |
| G187 | Throttle valve drive angle sender -1- (electric power control) |
| G188 | Throttle valve drive angle sender -2- (electric power control) |
| G212 | Exhaust gas recirculation potentiometer |
| J338 | Throttle valve control unit |
| J537 | 4LV (injection system) control unit |
| N18 | Exhaust gas recirculation valve |
| T17 | 17-pin connector, brown, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| 44 | Earth point, lower part of left A pillar |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 284 | Earth connection -6-, in interior wiring harness |
| D141 | Connection (5V), in engine prewiring wiring harness |
| * | Only applies to models with air conditioner |
| E45 | Cruise control system switch |
| F | Brake light switch |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| J537 | 4LV (injection system) control unit |
| N79 | Heater element (crankcase breather) |
| T10n | 10-pin connector, black, behind steering column switch trim |
| T17 | 17-pin connector, brown, in footwell, front left |
| T17b | 17-pin connector, white, in footwell, front left |
| T17c | 17-pin connector, black, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| A16 | Connection (cruise control system), in dash panel wiring harness |
| B149 | Positive (+) connection -2- (15a), in interior wiring harness |
| B185 | Connection -2- (54), in interior wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| * | Only applies to models with cruise control system |
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G71 | Intake manifold pressure sender |
| G72 | Intake manifold temperature sender |
| G40 | Hall sender |
| G61 | Knock sensor I |
| G62 | Coolant temperature sender |
| J537 | 4LV (injection system) control unit |
| T17 | 17-pin connector, brown, in footwell, front left |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| F36 | Clutch pedal switch |
| J537 | 4LV (injection system) control unit |
| N | Ignition coil |
| N122 | Final output stage |
| N128 | Ignition coil 2 |
| P | Spark plug connector |
| Q | Spark plugs |
| T16 | 16-pin connector, black, diagnostic connector, near fuse box |
| T17b | 17-pin connector, white, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| D51 | Positive (+) connection -1- (15), in engine compartment wiring harness |
| * | Only models with manual gearbox |
| • | CAN bus (data bus) |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G6 | Fuel pump (pre-supply pump) |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| G266 | Oil level/oil temperature sender |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K132 | Electronic power control fault lamp |
| T17 | 17-pin connector, brown, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| 277 | Earth connection -3-, in interior wiring harness |
| B135 | Connection -1- (15a), in interior wiring harness |
| * | No longer fitted, phased-in modification |
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