| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| F18 | Radiator fan thermo-switch |
| J59 | X contact relief relay |
| S162 | Fuse -1- (30), in fuse box/battery |
| S163 | Fuse -2- (30), in fuse box/battery |
| S179 | Fuse -7- (30), in fuse box/battery |
| T3b | 3-pin connector |
| T4g | 4-pin connector, black |
| T5 | 5-pin connector |
| T10d | 10-pin connector, red, connector point under relay carrier |
| T10s | 10-pin connector, light green, connector point under relay carrier |
| V7 | Radiator fan |
| 1 | Earth strap, battery - body |
| 10 | Earth point, in plenum chamber |
| 167 | Earth connection -4-, in engine compartment wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| 501 | Screw connection -2- (30), on relay plate |
| 502 | Screw connection -3- (30), on relay plate |
| * | Not with models with air conditioner |
| D | Ignition/starter switch |
| G28 | Engine speed sender |
| J537 | 4LV control unit (injection system) |
| N152 | Ignition transformer |
| P | Spark plug connector |
| Q | Spark plugs |
| SB34 | Fuse -34- in fuse box |
| SB36 | Fuse -36- in fuse box |
| T3e | 3-pin connector |
| T4b | 4-pin connector, black |
| T5h | 5-pin connector, on cylinder head, left |
| T10c | 10-pin connector, blue, connector point under relay carrier |
| T10s | 10-pin connector, light green, connector point under relay carrier |
| T14a | 14-pin connector, brown, on cylinder head, left |
| T121 | 121-pin connector |
| 12 | Earth point, in engine compartment, left |
| B163 | Positive (+) connection -1- (15), in interior wiring harness |
| B165 | Positive (+) connection -2- (15), in interior wiring harness |
| E39 | Connection, in 4LV wiring harness |
| F | Brake light switch |
| F63 | Brake pedal switch |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| G186 | Throttle valve drive (electric throttle operation) |
| G187 | Throttle valve drive angle sender -1- |
| G188 | Throttle valve drive angle sender -2- |
| J338 | Throttle valve control unit |
| J537 | 4LV control unit (injection system) |
| SB15 | Fuse -15- in fuse box |
| SB24 | Fuse -24- in fuse box |
| T6a | 6-pin connector, black |
| T6b | 6-pin connector |
| T10 | 10-pin connector, white, connector point under relay carrier |
| T10g | 10-pin connector, brown, connector point under relay carrier |
| T14 | 14-pin connector, black, on cylinder head, left |
| T14a | 14-pin connector, brown, on cylinder head, left |
| T121 | 121-pin connector |
| 220 | Earth connection (sender earth), in engine wiring harness |
| A89 | Connection -2- (54), in dash panel wiring harness |
| 327 | Earth connection (sender earth), in engine compartment wiring harness |
| G2 | Coolant temperature sender |
| G40 | Hall sender I |
| G62 | Coolant temperature sender |
| J104 | ABS with EDL control unit |
| J537 | 4LV control unit (injection system) |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| SB3 | Fuse -3- in fuse box |
| T3 | 3-pin connector |
| T5h | 5-pin connector, on cylinder head, left |
| T10a | 10-pin connector, green, connector point under relay carrier |
| T14 | 14-pin connector, black, on cylinder head, left |
| T14a | 14-pin connector, brown, on cylinder head, left |
| T121 | 121-pin connector |
| 12 | Earth point, in engine compartment, left |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 327 | Earth connection (sender earth), in engine compartment wiring harness |
| D95 | Connection (injectors), in engine compartment wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| G39 | Lambda probe before catalyst |
| G65 | High pressure sender |
| G130 | Lambda probe downstream of catalytic converter |
| J255 | Climatronic control unit |
| J293 | Radiator fan control unit |
| J362 | Immobilizer control unit |
| J537 | 4LV control unit (injection system) |
| N80 | Activated charcoal filter system solenoid valve 1 |
| SB30 | Fuse -30- in fuse box |
| T4f | 4-pin connector |
| T6e | 6-pin connector |
| T10 | 10-pin connector, white, connector point under relay carrier |
| T10a | 10-pin connector, green, connector point under relay carrier |
| T10b | 10-pin connector, black, connector point under relay carrier |
| T10g | 10-pin connector, brown, connector point under relay carrier |
| T14a | 14-pin connector, brown, on cylinder head, left |
| T121 | 121-pin connector |
| B149 | Positive (+) connection -2- (15a), in interior wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| L2 | Connection, in air conditioner wiring harness |
| * | Only models with manual control air conditioner |
| ** | Only models with Climatronic |
| G61 | Knock sensor |
| G212 | Exhaust gas recirculation potentiometer |
| J17 | Fuel pump relay |
| J234 | Airbag control unit |
| J537 | 4LV control unit (injection system) |
| N18 | Exhaust gas recirculation valve |
| SB31 | Fuse -31- in fuse box |
| T2 | 2-pin connector, black |
| T6d | 6-pin connector |
| T10d | 10-pin connector, red, connector point under relay carrier |
| T10g | 10-pin connector, brown, connector point under relay carrier |
| T10x | 10-pin connector, yellow, connector point under relay carrier |
| T14 | 14-pin connector, black, on cylinder head, left |
| T121 | 121-pin connector |
| W | Interior light, front |
| 76 | Earth point, near selector mechanism |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| B102 | Earth connection, in front left interior wiring harness |
| B169 | Positive (+) connection -1- (30), in interior wiring harness |
| G | Fuel gauge sender |
| G6 | Fuel pump |
| G32 | Coolant shortage indicator sender |
| SB1 | Fuse -1- in fuse box |
| SB40 | Fuse -40- in fuse box |
| T5h | 5-pin connector, on cylinder head, left |
| T10b | 10-pin connector, black, connector point under relay carrier |
| T10c | 10-pin connector, blue, connector point under relay carrier |
| T10d | 10-pin connector, red, connector point under relay carrier |
| T10e | 10-pin connector, light pink, connector point under relay carrier |
| 132 | Earth connection -3-, in engine compartment wiring harness |
| A99 | Connection -1- (87), in dash panel wiring harness |
| B102 | Earth connection, in interior wiring harness, front left |
| F1 | Oil pressure switch |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G22 | Speedometer sender |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| K105 | Reserve fuel warning lamp |
| N79 | Heater element (crankcase breather) |
| T10 | 10-pin connector, white, connector point under relay carrier |
| T10b | 10-pin connector, black, connector point under relay carrier |
| T10d | 10-pin connector, red, connector point under relay carrier |
| T10g | 10-pin connector, brown, connector point under relay carrier |
| T14 | 14-pin connector, black, on cylinder head, left |
| T14a | 14-pin connector, brown, on cylinder head, left |
| T32 | 32-pin connector, blue |
| 10 | Earth point, in plenum chamber |
| 201 | Earth connection -5-, in engine compartment wiring harness |
| 281 | Earth connection -1-, in engine prewiring wiring harness |
| --- | Only AUA/APE from December 2000 |
| G5 | Rev. counter |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert |
| J533 | Data bus diagnostic interface control unit |
| K2 | Alternator warning lamp |
| K83 | Exhaust emissions warning lamp |
| T10s | 10-pin connector, green, connector point under relay carrier |
| T16 | 16-pin connector, self-diagnosis connection |
| T32 | 32-pin connector, green |
| T32a | 32-pin connector, blue |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
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