| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | X contact relief relay |
| SA1 | Fuse -1- in battery fuse box |
| SA2 | Fuse -2- in battery fuse box |
| SA4 | Fuse -4- in battery fuse box |
| SA5 | Fuse -5- in battery fuse box |
| TV2 | Terminal 30 junction box |
| T5f | 5-pin connector, black, in engine compartment |
| T6j | 6-pin connector, black, on relay carrier |
| T10d | 10-pin connector, black, connector point for connector |
| T10i | 10-pin connector, red, connector point for connector |
| 1 | Earth strap, battery - body |
| 2 | Earth strap, gearbox - body |
| 80 | Earth connection -1-, in dash panel wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| 501 | Screw connection -2- (30), on relay plate |
| 502 | Screw connection -1- (30a), on relay plate |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A61 | Positive (+) connection (X), in dash panel wiring harness |
| A80 | Connection -1- (X), in dash panel wiring harness |
| J220 | Motronic control unit |
| J234 | Airbag control unit (01321) |
| 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 |
| SB1 | Fuse -1- on fuse holder |
| SB4 | Fuse -4- on fuse holder |
| T4r | 4-pin connector, black, engine pre-wiring |
| T4s | 4-pin connector, black, engine pre-wiring |
| T4t | 4-pin connector, black, engine pre-wiring |
| T4u | 4-pin connector, black, engine pre-wiring |
| T9a | 9-pin connector, black, on relay carrier mount |
| T10h | 10-pin connector, violet, on coupling station |
| T10i | 10-pin connector, red, on coupling station |
| T28 | 28-pin connector, with engine pre-wiring |
| T50 | 50-pin connector, yellow |
| T121 | 121-pin connector, black |
| J491 | Fuel shut-off control unit (Crash) |
| 18 | Earth point, on cylinder block |
| 109 | Earth connection, in airbag wiring harness |
| 306 | Earth connection (ignition coils), in engine pre-wiring harness |
| A15 | Positive connection (15), in instrument wiring harness |
| A98 | Positive connection -4- (30), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| * | Vehicles without airbag only |
| ** | Vehicles with airbag only |
| G2 | Coolant temperature sender (01039) |
| G40 | Hall sender (00515-2113) |
| G62 | Coolant temperature sender (00522-2312) |
| J220 | Motronic control unit |
| T10f | 10-pin connector, brown, on coupling station |
| T10g | 10-pin connector, green, on coupling station |
| T14a | 14-pin connector, brown |
| T28 | 28-pin connector, with engine pre-wiring |
| T121 | 121-pin connector, black |
| 10 | Earth point, in plenum chamber |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 110 | Earth connection -2-, in wiring harness for instruments |
| 167 | Earth connection -4-, in engine compartment wiring harness |
| 281 | Earth connection -1-, in engine pre-wiring wiring harness |
| F38 | Ambient temperature switch |
| G61 | Knock sensor I (00524-2142) |
| G66 | Knock sensor II (00540-2144) |
| G71 | Intake manifold pressure sender (00519-2222) |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit (00831) |
| T3c | 3-pin connector, black in engine pre-wiring |
| T3g | 3-pin connector, black in engine pre-wiring |
| T5g | 5-pin connector, brown, on coupling station |
| T10g | 10-pin connector, green, in coupling station |
| T14b | 14-pin connector |
| T28 | 28-pin connector, in engine pre-wiring |
| T121 | 121-pin connector, black |
| 221 | Earth connection (engine earth), in engine wiring harness |
| D61 | Connection (air conditioner), in engine compartment wiring harness |
| D114 | Connection -12-, in engine compartment wiring harness |
| D133 | Connection (hall sender signal), engine compartment wiring harness |
| L5 | Connection -1-, in air conditioner wiring harness |
| F88 | Power steering pressure switch (00557) |
| G28 | Engine revs sender (00513-2111) |
| G69 | Throttle valve potentiometer (00518-2212) |
| G88 | Throttle valve positioner-potentiometer (00530-2124) |
| V60 | Throttle valve positioner (00282-1232) |
| J104 | ABS with EDL control unit |
| J220 | Motronic control unit |
| J338 | Throttle valve control unit (01165) |
| T5q | 5-pin connector |
| T10f | 10-pin connector, brown, in coupling station |
| T14a | 14-pin connector, brown |
| T28 | 28-pin connector, in engine pre-wiring |
| 221 | Earth connection (engine earth), in engine wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| G42 | Inlet air temperature sender |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator position sender -2- |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| N112 | Secondary air inlet valve |
| T10h | 10 way connector, purple, in the couplings distributor |
| T14a | 14-way connector, brown |
| 201 | Earth connection -5-, engine bay wiring harness |
| A99 | Connection -1- (87), dash panel insert wiring harness |
| G130 | Lambda probe after catalytic converter |
| J220 | Motronic control unit |
| J299 | secondary air pump relay |
| N30 | Injector cylinder 1 |
| N31 | Cylinder 2 injector |
| N32 | Cylinder 3 injector |
| N33 | Cylinder 4 injector |
| V101 | secondary air pump motor |
| Z29 | Lambda probe 1 heating, after catalytic converter |
| T4d | 4-way connector, black, exhaust pipe |
| T6h | 6-way connector, black, in relay carrier mounting |
| T10f | 10 way connector, brown, in the couplings distributor |
| T28 | 28-way connector, engine precabled |
| T121 | 121-way connector, black |
| 131 | Earth connection -2-, in the engine compartment wiring harness |
| D95 | Connection (injectors) in engine bay wiring harness |
| D108 | Connection -6-, engine bay wiring harness |
| G39 | Lambda probe |
| G70 | Air mass meter |
| J220 | Motronic control unit |
| N75 | Solenoid valve to limit supercharging pressure |
| N80 | Activated charcoal filter system solenoid valve I (pulsed) |
| N249 | Air recirculation valve for turbocompressor |
| Z19 | Lambda probe heating |
| T4g | 4-way connector |
| T10e | 10 way connector, white, in the couplings distributor |
| T10h | 10 way connector, purple, in the couplings distributor |
| T14a | 14-way connector, brown |
| T28 | 28-way connector, engine precabled |
| T121 | 121-way connector, black |
| D142 | Connection, engine bay wiring harness |
| E32 | Connection (87), Motronic engine wiring harness |
| * | W self-diagnosis line |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Brake pedal switch of the GRA/direct diesel injection system |
| J... | Engine control units |
| J220 | Motronic control unit |
| M21 | Brake and tail light bulb, left |
| M22 | Brake and tail light bulb, right |
| M25 | High level brake light bulb |
| SB2 | Fuse -2- in the fusebox |
| SB8 | Fuse -8- in fuseholder |
| SB20 | Fuse -20- in fusebox |
| T10g | 10 way connector, green, in the couplings distributor |
| T10h | 10 way connector, purple, in the couplings distributor |
| T10i | 10 way conn., red, in the couplings distributor |
| T14a | 14-way connector, brown |
| D52 | Positive connection (15a), engine bay wiring harness |
| D73 | Positive connection (54), engine bay wiring harness |
| D106 | Connection -4-, engine bay wiring harness |
| D109 | Connection -7-, engine bay wiring harness |
| D101 | Connection -11-, engine bay wiring harness |
| D101 | Connection, engine bay wiring harness |
| E32 | Connection (87), engine wiring harness |
| E45 | GRA switch |
| F1 | Oil pressure switch |
| G | Fuel level sender |
| G6 | Fuel pump (pre-supply pump) |
| G22 | Speedometer sender |
| T6 | 6-way connector, khaki grey |
| T10f | 10 way connector, brown, in the couplings distributor |
| T10g | 10 way connector, green, in the couplings distributor |
| T10l | 10 way connector, orange, in the couplings distributor |
| T14a | 14-way connector, brown |
| T28 | 28-way connector, engine precabled |
| 10 | Plenum chamber earthing point |
| 51 | Earth point, boot, on the right |
| 57 | Earth point, rear strut, left |
| 110 | Earth connection -2-, instrument panel wiring harness |
| 131 | Earth connection -2-, in the engine compartment wiring harness |
| B163 | Positive connection -1- (15), interior wiring harness |
| D52 | Positive connection (15a), engine bay wiring harness |
| * | Only vehicles with GRA |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| J285 | Control unit with warning lamps on the dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Temperature warning lamp/coolant level warning lamp |
| K83 | Exhaust emissions warning lamp |
| K132 | Electronic power control fault lam |
| T10l | 10-way connector, red, in the couplings distributor |
| T32 | 32-way connector, blue, instrument panel |
| T32a | 32-way connector, green, instrument panel |
| Y4 | Odometer |
| 110 | Earth connection -2-, instrument panel wiring harness |
| * | W self-diagnosis line |
| G21 | Speedometer (00663) |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert (01317) |
| K2 | Alternator warning lamp |
| L75 | Digital display illumination |
| SB9 | Fuse -9- on fuse holder |
| T32 | 32-pin connector, blue, in dash panel insert |
| T32a | 32-pin connector, green, in dash panel insert |
| 44 | Earth point, A-pillar left, bottom |
| 81 | Earth connection -1-, in dash panel wiring harness |
| A21 | Connection (86s), in dash panel wiring harness |
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