| J271 | Motronic current supply relay |
| J670 | Motronic current supply relay 2 |
| S2 | Fuse in relay plate fuse holder, in engine compartment |
| S7 | Fuse in relay plate fuse holder, in engine compartment |
| S8 | Fuse in relay plate fuse holder, in engine compartment |
| S9 | Fuse in relay plate fuse holder, in engine compartment |
| S10 | Fuse in relay plate fuse holder, in engine compartment |
| S11 | Fuse in relay plate fuse holder, in engine compartment |
| S12 | Fuse in relay plate fuse holder, in engine compartment |
| S13 | Fuse in relay plate fuse holder, in engine compartment |
| S14 | Fuse in relay plate fuse holder, in engine compartment |
| S15 | Fuse in relay plate fuse holder, in engine compartment |
| S16 | Fuse in relay plate fuse holder, in engine compartment |
| S17 | Fuse in relay plate fuse holder, in engine compartment |
| S18 | Fuse in relay plate fuse holder, in engine compartment |
| D50 | Positive connection (30), in engine compartment wiring harness |
| D75 | Positive connection 2 (30), in engine compartment wiring harness |
| D120 | Connection 18, in engine compartment wiring harness |
| D121 | Connection 19, in engine compartment wiring harness |
| D123 | Connection 21, in engine compartment wiring harness |
| D144 | Positive connection 5 (30), in engine compartment wiring harness |
| * | only models with trailer towing attachment |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| E74 | Battery master/isolator switch |
| J518 | Entry and start authorisation control unit |
| J623 | Engine control unit |
| J682 | Terminal 50 voltage supply relay |
| S1 | Fuses in relay plate fuse holder |
| S3 | Fuses in relay plate fuse holder |
| S4 | Fuses in relay plate fuse holder |
| T6ma | 6-pin connector, white, on electronics box engine compartment |
| T10c | 10-pin connector, pink, electronics box engine compartment |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T10f | 10-pin connector, red, electronics box front engine compartment |
| T81 | 81-pin connector |
| T121a | 121-pin connector |
| TV2 | Terminal 30 wiring junction |
| TV22 | Terminal 30 wiring junction 2 |
| D110 | Connection 8, in engine compartment wiring harness |
| D120 | Connection 18, in engine compartment wiring harness |
| D144 | Positive connection 5 (30), in engine compartment wiring harness |
| J17 | Fuel pump relay |
| J49 | Electric fuel pump 2 relay |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| N70 | Ignition coil 1 with output stage |
| N127 | Ignition coil 2 with output stage |
| N291 | Ignition coil 3 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T10c | 10-pin connector, pink, electronics box engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T121a | 121-pin connector |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 132 | Earth connection 3, in engine compartment wiring harness |
| D50 | Positive connection (30), in engine compartment wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
| D124 | Connection 22, in engine compartment wiring harness |
| J623 | Engine control unit |
| N292 | Ignition coil 4 with output stage |
| N323 | Ignition coil 5 with output stage |
| N324 | Ignition coil 6 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T6ma | 6-pin connector, white, on electronics box engine compartment |
| T121a | 121-pin connector |
| 18 | Earth point on engine block |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 132 | Earth connection 3, in engine compartment wiring harness |
| 167 | Earth connection 4, in engine compartment wiring harness |
| 646 | Earth point 2, on bulkhead |
| D101 | Connection 1, in engine compartment wiring harness |
| D102 | Connection 2, in engine compartment wiring harness |
| * | from November 2004 |
| ** | is dropped from November 2004 |
| F | Brake light switch |
| F47 | Brake pedal switch |
| F265 | Map-controlled engine cooling system thermostat |
| G83 | Radiator outlet coolant temperature sender |
| J527 | Steering column electronics control unit |
| J623 | Engine control unit |
| N112 | Secondary air inlet valve |
| N205 | Inlet camshaft control valve 1 |
| N318 | Exhaust camshaft control valve 1 |
| SB38 | Fuse 38 on fuse holder |
| T10c | 10-pin connector, pink, electronics box engine compartment |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T16a | 16-pin connector |
| T121a | 121-pin connector |
| B335 | Connection 1 (54), in main wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| * | from November 2004 |
| ** | is dropped from November 2004 |
| G42 | Intake air temperature sender |
| G70 | Air mass meter |
| G79 | Accelerator position sender |
| G185 | Accelerator position sender 2 |
| G294 | Brake servo pressure sensor |
| J623 | Engine control unit |
| T4d | 4-pin connector |
| T6g | 6-pin connector, black |
| T10e | 10-pin connector, green, electronics box engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T121a | 121-pin connector |
| D126 | Connection 24, in engine compartment wiring harness |
| D141 | Connection (5V), in engine wiring harness |
| * | from November 2005 |
| G65 | High pressure sender |
| J255 | Climatronic control unit |
| J293 | Radiator fan control unit |
| J299 | Secondary air pump relay |
| J496 | Additional coolant pump relay |
| J623 | Engine control unit |
| J671 | Radiator fan control unit 2 |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T121a | 121-pin connector |
| V7 | Radiator fan |
| V36 | Water pump |
| V101 | Secondary air pump motor |
| V177 | Radiator fan 2 |
| 12 | Earth point, on left in engine compartment |
| 317 | Earth connection 7, in engine compartment wiring harness |
| 363 | Earth connection 8, in engine compartment wiring harness |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| D122 | Connection 20, in engine compartment wiring harness |
| D128 | Connection 26, in engine compartment wiring harness |
| D129 | Connection 27, in engine compartment wiring harness |
| * | only models with trailer towing attachment |
| ** | from November 2004 |
| *** | is dropped from November 2004 |
| # | from November 2005 |
| G186 | Throttle valve drive (electric power control) |
| G187 | Throttle valve drive angle sender 1 for electric throttle |
| G188 | Throttle valve drive angle sender 2 for electric throttle |
| J338 | Throttle valve module |
| J569 | Brake servo relay |
| J623 | Engine control unit |
| T6ma | 6-pin connector, white, on electronics box engine compartment |
| T121a | 121-pin connector |
| V192 | Vacuum pump for brakes |
| 614 | Earth point 2, on right in engine compartment |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| D125 | Connection 23, in engine compartment wiring harness |
| D130 | Connection 28, in engine compartment wiring harness |
| J623 | Engine control unit |
| J624 | Engine control unit 2 |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T121a | 121-pin connector |
| T121b | 121-pin connector |
| 417 | Earth connection 9, in engine compartment wiring harness |
| 418 | Earth connection 10, in engine compartment wiring harness |
| 419 | Earth connection 11, in engine compartment wiring harness |
| 646 | Earth point 2, on bulkhead |
| B509 | Connection 3 (diagnosis), in main wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| D166 | Connection (K-diagnosis wiring), in engine compartment wiring harness |
| J545 | Secondary air pump relay 2 |
| J624 | Engine control unit 2 |
| N325 | Ignition coil 7 with output stage |
| N326 | Ignition coil 8 with output stage |
| N327 | Ignition coil 9 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| SB26 | Fuse 26 on fuse holder |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T121b | 121-pin connector |
| V189 | Secondary air pump motor 2 |
| 201 | Earth connection 5, in engine compartment wiring harness |
| 209 | Earth connection 6, in engine compartment wiring harness |
| D107 | Connection 5, in engine compartment wiring harness |
| D122 | Connection 20, in engine compartment wiring harness |
| D125 | Connection 23, in engine compartment wiring harness |
| D130 | Connection 28, in engine compartment wiring harness |
| J624 | Engine control unit 2 |
| N328 | Ignition coil 10 with output stage |
| N329 | Ignition coil 11 with output stage |
| N330 | Ignition coil 12 with output stage |
| P | Spark plug connector |
| Q | Spark plugs |
| T6ma | 6-pin connector, white, electronics box engine compartment |
| T121b | 121-pin connector |
| 18 | Earth point on engine block |
| 201 | Earth connection 5, in engine compartment wiring harness |
| 209 | Earth connection 6, in engine compartment wiring harness |
| D107 | Connection 5, in engine compartment wiring harness |
| D108 | Connection 6, in engine compartment wiring harness |
| G266 | Oil level and oil temperature sender |
| J285 | Control unit in dash panel insert |
| J624 | Engine control unit 2 |
| N208 | Inlet camshaft control valve 2 |
| N280 | Air conditioning system compressor regulating valve |
| N319 | Exhaust camshaft control valve 2 |
| N320 | Secondary air inlet valve 2 |
| N333 | Activated charcoal filter system solenoid valve 2 |
| T6ma | 6-pin connector, white, on electronics box engine compartment |
| T10f | 10-pin connector, red, electronics box front engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T32a | 32-pin connector, blue |
| T32b | 32-pin connector, green |
| T121b | 121-pin connector |
| 32 | Earth point, on left behind dash panel insert |
| B344 | Connection 1 (61), in main wiring harness |
| E53 | Connection 2 (87a), in Motronic wiring harness |
| * | from November 2004 |
| ** | is dropped from November 2004 |
| *** | from November 2005 |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| G23 | Fuel pump |
| G32 | Coolant shortage indicator sender |
| G237 | Fuel gauge sender 3 |
| J285 | Control unit in dash panel insert |
| J533 | Data bus diagnostic interface |
| T4af | 4-pin connector, near fuel tank |
| T5k | 5-pin connector, near fuel tank |
| T10f | 10-pin connector, red, electronics box front engine compartment |
| T16b | 16-pin connector, self-diagnosis connection, driver footwell |
| T32a | 32-pin connector, blue |
| T32b | 32-pin connector, green |
| 39 | Earth point, under rear left seat |
| 410 | Earth connection 1 (sender earth), in main wiring harness |
| B385 | Connection 3 (drive train CAN bus, high), in main wiring harness |
| B392 | Connection 3 (drive train CAN bus, low), in main wiring harness |
| B444 | Connection 1 (diagnosis), in main wiring harness |
| * | from November 2004 |
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