| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| S131 | Fuse 1 in the fuse holder/battery |
| S132 | Fuse 2 in the fuse holder/battery |
| S133 | Fuse 3 in the fuse holder/battery |
| S134 | Fuse 4 in the fuse holder/battery |
| S138 | Fuse 5 in the fuse holder/battery |
| S162 | Fuse 1 (30) in fuse holder on battery |
| S163 | Fuse 2 (30) in fuse holder on battery |
| S164 | Fuse 3 (30) in fuse holder on battery |
| T2f | 2-pin connector, alternator, in left engine compartment |
| T3e | 3-pin connector, black, on main fuse box |
| T4b | 4-pin connector, in left engine compartment |
| T6m | 6-pin connector, brown, in plenum chamber |
| 2 | Earth strap, gearbox - body |
| 10 | Earth point, in plenum chamber |
| 12 | Earth point, on left in engine compartment |
| 85 | Earth connection 1, in engine compartment wiring harness |
| * | with air conditioning system |
| ** | without air conditioning system |
| D | Ignition/starter switch |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N75 | Charge pressure control solenoid valve |
| N205 | Inlet camshaft control valve 1 |
| N249 | Turbocharger air recirculation valve |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10 | 10-pin connector, white, in plenum chamber |
| T14 | 14-pin connector, in left engine compartment |
| A100 | Connection 2 (87), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| B155 | Connection 2 (DCt), in interior wiring harness |
| D140 | Connection (injectors), in engine wiring harness |
| E7 | Positive connection (87a), in Motronic wiring harness |
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G61 | Knock sensor 1 |
| G62 | Coolant temperature sender |
| G66 | Knock sensor 2 |
| J220 | Motronic control unit |
| T2ap | 2-pin connector, knock sensor I, in engine compartment |
| T2aq | 2-pin connector, knock sensor II, in engine compartment |
| T3d | 3-pin connector, white, speed sender, in engine compartment |
| T10x | 10-pin connector, orange, in plenum chamber |
| T14 | 14-pin connector, in left engine compartment |
| 220 | Earth connection (sender earth), in engine wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| A45 | Connection (RPM signal), in dash panel wiring harness |
| A108 | Connection (speed signal), in dash panel wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
| E45 | Cruise control system switch |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| J220 | Motronic control unit |
| T10 | 10-pin connector, white, in plenum chamber |
| T10e | 10-pin connector, black, in plenum chamber |
| T10g | 10-pin connector, blue, in plenum chamber |
| B135 | Connection 1 (15a), in interior wiring harness |
| B185 | Connection 2 (54), in interior wiring harness |
| * | for cruise control system only |
| F88 | Power assisted steering pressure switch |
| G31 | Charge air pressure sender |
| G40 | Hall sender |
| G70 | Air mass meter |
| G235 | Exhaust gas temperature sender 1 |
| J220 | Motronic control unit |
| 18 | Earth point, on engine block |
| 283 | Earth connection 2, in engine harness |
| D80 | Positive connection (87a, for active charcoal filter system solenoid valve), in engine compartment wiring harness |
| D141 | Connection (5V), in engine wiring harness |
| E17 | Connection 2, in Motronic wiring harness |
| E87 | operating and display unit for air conditioning system/Climatronic |
| G39 | Lambda probe |
| G130 | Lambda probe after catalytic converter |
| J220 | Motronic control unit |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| T4m | 4-pin connector, lambda probe, in right engine compartment |
| T6m | 6-pin connector, brown, in plenum chamber |
| T6o | 6-pin connector, lambda probe, in right engine compartment |
| T10x | 10-pin connector, orange, in plenum chamber |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe 1 heater after catalytic converter |
| D80 | Positive connection (87a, for active charcoal filter system solenoid valve), in engine compartment wiring harness |
| * | only with air conditioning system / Climatronic |
| J220 | Motronic control unit |
| N | Ignition coil |
| N128 | Ignition coil 2 |
| N158 | Ignition coil 3 |
| N163 | Ignition coil 4 |
| P | Spark plug connector |
| Q | Spark plugs |
| T10 | 10-pin connector, white, in plenum chamber |
| T14 | 14-pin connector, in left engine compartment |
| 10 | Earth point, in plenum chamber |
| 281 | Earth connection 1, in engine harness |
| 283 | Earth connection 2, in engine harness |
| D106 | Connection 4, in engine compartment wiring harness |
| J220 | Motronic control unit |
| J271 | Motronic current supply relay |
| S13 | Fuse in relay plate fuse holder |
| S237 | Fuse in fuse holder |
| T2m | 2-pin connector, engine prewiring, cable channel, in left engine compartment |
| T6m | 6-pin connector, brown, in plenum chamber |
| 85 | Earth connection 1, in engine compartment wiring harness |
| A98 | Positive connection 4 (30), in dash panel wiring harness |
| B156 | Positive connection (30a), in interior wiring harness |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| D | Ignition/starter switch |
| G | Fuel gauge sender |
| G6 | Fuel pump (pre-supply pump) |
| S5 | Fuse in relay plate fuse holder |
| S7 | Fuse in relay plate fuse holder |
| S11 | Fuse in relay plate fuse holder |
| S228 | Fuse in fuse holder |
| S229 | Fuse in fuse holder |
| S232 | Fuse in fuse holder |
| S234 | Fuse in fuse holder |
| S243 | Fuse in fuse holder |
| T14 | 14-pin connector, in left engine compartment |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| 277 | Earth connection 3, in interior wiring harness |
| A2 | Positive connection (15), in dash panel wiring harness |
| A15 | Positive connection (15), in instrument panel wiring harness |
| A23 | Connection (30al), in dash panel wiring harness |
| A99 | Connection 1 (87), in dash panel wiring harness |
| A101 | Connection 3 (87), in dash panel wiring harness |
| B147 | Positive connection 2 (87), in interior wiring harness |
| B149 | Positive connection 2 (15a), in interior wiring harness |
| F18 | Thermal switch for radiator fan |
| F54 | Thermal switch for radiator fan |
| J155 | Coolant pump control unit |
| V7 | Radiator fan |
| V51 | Continued coolant circulation pump |
| 11 | Earth point, in battery box |
| 188 | Earth connection 3, in air conditioning system wiring harness |
| A68 | Connection (30, air conditioning system), in dash panel wiring harness |
| F1 | Oil pressure switch |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| G266 | Oil level and oil temperature sender |
| J218 | Combi-processor in dash panel insert |
| J533 | Data bus diagnostic interface |
| K2 | Alternator warning lamp |
| K132 | Electric power control fault lamp |
| K149 | Engine electronics warning lamp |
| T14 | 14-pin connector, in left engine compartment |
| T16 | 16-pin connector, black, shelf centre console (diagnostic connector) |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| 281 | Earth connection 1, in engine harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A80 | Connection 1 (X), in dash panel wiring harness |
| B178 | Connection (speed signal), in interior wiring harness |
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