| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| E1 | Lighting switch |
| J59 | X contact relief relay |
| SA2 | Fuse -2- on battery fuse box |
| SA4 | Fuse -4- on battery fuse box |
| SA5 | Fuse-5- on battery fuse box |
| SA6 | Fuse -6- on battery fuse box |
| TV2 | Terminal 30 junction box |
| T3a | 3-pin connector, near battery |
| T5d | 5-pin connector, near gearbox |
| T10a | 10-pin connector, black |
| T17 | 17-pin connector |
| 1 | Earth strap, battery - body |
| 2 | Earth strap, gearbox - body |
| 80 | Earth connection -1-, in instruments wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A61 | Positive (+) connection (X), in instruments wiring harness |
| A80 | Connection -1- (X), in dash panel wiring harness |
| D107 | Connection -5-, in engine compartment wiring harness |
| G40 | Hall sender |
| J220 | Motronic control unit |
| J234 | Airbag control unit |
| J491 | Fuel shut-off control unit (crash) |
| N152 | Ignition transformer |
| P | Spark plug connector |
| Q | Spark plugs |
| SB24 | Fuse -24- on fuse box |
| SB27 | Fuse -27- on fuse box |
| SB30 | Fuse -30- on fuse box |
| SB34 | Fuse -34- on fuse box |
| SB36 | Fuse -36- on fuse box |
| T4m | 4-pin connector, yellow, in ignition transformer |
| T5f | 5-pin connector, in engine |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T10g | 10-pin connector, red, in protective housing for connectors |
| T14 | 14-pin connector, in engine |
| T50 | 50-pin connector |
| T121 | 121-pin connector |
| 109 | Earth connection, in airbag wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| * | Does not apply to airbag |
| ** | Only models with airbag |
| G2 | Coolant temperature sender |
| G62 | Coolant temperature sender |
| G186 | Throttle valve drive (electric throttle operation) |
| G187 | Throttle valve drive angle sender -1- (electric throttle operation) |
| G188 | Throttle valve drive angle sender -2- (electric throttle operation) |
| J220 | Motronic control unit |
| J338 | Throttle valve control unit |
| SB37 | Fuse -37- on fuse box |
| T5f | 5-pin connector, in engine |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T14 | 14-pin connector, in engine |
| T14a | 14-pin connector, in engine |
| T121 | 121-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D101 | Connection -1-, in engine compartment wiring harness |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| J220 | Motronic control unit |
| N121 | Exhaust gas recirculation frequency valve |
| T14 | 14-pin connector, in engine |
| T121 | 121-pin connector |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D101 | Connection -1-, in engine compartment wiring harness |
| F36 | Clutch pedal switch |
| G28 | Engine speed sender |
| G61 | Knock sensor I |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| J104 | ABS with EDL control unit |
| J220 | Motronic control unit |
| T5g | 5-pin connector, pink, in protective housing for connectors |
| T6m | 6-pin connector |
| T14 | 14-pin connector, in engine |
| T25 | 25-pin connector |
| T121 | 121-pin connector |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| D109 | Connection -7-, in engine compartment wiring harness |
| D159 | Positive (+) connection (high bus), in engine compartment wiring harness |
| D160 | Positive (+) connection (low bus), in engine compartment wiring harness |
| * | Data wire |
| J220 | Motronic control unit |
| J362 | Immobilizer control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| T5f | 5-pin connector, in engine |
| T10c | 10-pin connector, brown, in protective housing for connectors |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T10x | 10-pin connector |
| T14a | 14-pin connector, in engine |
| T121 | 121-pin connector |
| 10 | Earth point, in plenum chamber |
| 241 | Earth connection -2-, engine earth, in engine wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
| G39 | Lambda probe |
| G130 | Lambda probe downstream of catalytic converter |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| T4e | 4-pin connector, in engine |
| T5h | 5-pin connector, brown, in protective housing for connectors |
| T6k | 6-pin connector, in exhaust pipe |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T14b | 14-pin connector, in engine compartment, left |
| T121 | 121-pin connector |
| Z19 | Lambda probe heater |
| D80 | Positive (+) connection (87a - for active. charcoal filter system solenoid), in engine compartment wiring harness |
| * | Only models with air conditioner |
| F | Brake light switch |
| F47 | Cruise control system brake pedal switch (diesel direct injection system) |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| M21 | Brake and tail light bulb, left |
| M22 | Brake and tail light bulb, right |
| M25 | High level brake light bulb |
| SB1 | Fuse -1- on fuse box |
| SB3 | Fuse -3- on fuse box |
| SB15 | Fuse -15- on fuse box |
| SB28 | Fuse -28- on fuse box |
| T10a | 10-pin connector, black, in protective housing for connectors |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T121 | 121-pin connector |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T10g | 10-pin connector, red, in protective housing for connectors |
| T14 | 14-pin connector, in engine |
| T14a | 14-pin connector, in engine |
| 18 | Earth point, on engine block |
| A99 | Connection -1- (87), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| D73 | Positive (+) connection (54), in engine compartment wiring harness |
| D106 | Connection -4-, in engine compartment wiring harness |
| F18 | Radiator fan thermo-switch |
| F22 | Oil pressure switch (0.3 bar) |
| G | Fuel gauge sender |
| G6 | Fuel pump (pre-supply pump) |
| G32 | Coolant shortage indicator sender |
| SB40 | Fuse -40- on fuse box |
| T3b | 3-pin connector, in engine compartment, front left |
| T6b | 6-pin connector, grey, in protective housing for connectors |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T10i | 10-pin connector, orange, in protective housing for connectors |
| V7 | Radiator fan |
| 12 | Earth point, in engine compartment, left |
| 51 | Earth point, in right luggage compartment |
| 179 | Earth connection, in left headlight wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G21 | Speedometer |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| T10c | 10-pin connector, brown, in protective housing for connectors |
| T10g | 10-pin connector, red, in protective housing for connectors |
| T32 | 32-pin connector, blue |
| Y4 | Odometer display |
| 45 | Earth point, behind dash panel - centre |
| 81 | Earth connection -1-, in dash panel wiring harness |
| G5 | Rev. counter |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| SB16 | Fuse -16- on fuse box |
| T10b | 10-pin connector, white, in protective housing for connectors |
| T10c | 10-pin connector, brown, in protective housing for connectors |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T10g | 10-pin connector, red, in protective housing for connectors |
| T32 | 32-pin connector, blue |
| T32a | 32-pin connector, green |
| A21 | Connection (86s), in dash panel wiring harness |
| * | Data wire |
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