| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J518 | Entry and start authorisation control unit |
| J682 | Terminal 50 voltage supply relay |
| T1v | Single connector |
| T2gd | 2-pin connector, black |
| 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 engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T81 | 81-pin connector |
| TV2 | Terminal 30 wiring junction |
| U6 | Slave start socket |
| D50 | Positive connection (30), in engine compartment wiring harness |
| D75 | Positive connection 2 (30), in engine compartment wiring harness |
| D108 | Connection 6, in engine compartment wiring harness |
| * | only models with 150 A alternator |
| ** | only models with 180 A alternator |
| J317 | Terminal 30 voltage supply relay |
| S1 | Fuse in relay plate fuse holder, in engine compartment |
| S2 | 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 |
| S17 | 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 |
| D103 | Connection 3, in engine compartment wiring harness |
| D109 | Connection 7, in engine compartment wiring harness |
| G39 | Lambda probe |
| J255 | Climatronic control unit |
| J623 | Engine control unit |
| J708 | Residual heat relay |
| SB2 | Fuse 2 on fuse holder B |
| T2ck | 2-pin connector, black |
| T6mb | 6-pin connector, black |
| T14g | 14-pin connector, black |
| T94aa | 94-pin connector |
| V55 | Circulation pump |
| Z19 | Lambda probe heater |
| 32 | Earth point, on left behind dash panel insert |
| 167 | Earth connection 4, in engine compartment wiring harness |
| 201 | Earth connection 5, in engine compartment wiring harness |
| 373 | Earth connection 8, in main wiring harness |
| 374 | Earth connection 9, in main wiring harness |
| 640 | Earth point, on left in engine compartment |
| * | only models with auxiliary heater (plenum) |
| J623 | Engine control unit |
| N240 | Unit injector valve, No. 1 cyl. |
| N241 | Unit injector valve, No. 2 cyl. |
| N242 | Unit injector valve, No. 3 cyl. |
| N243 | Unit injector valve, No. 4 cyl. |
| N244 | Unit injector valve, No. 5 cyl. |
| T2cn | 2-pin connector |
| T2co | 2-pin connector |
| T2cp | 2-pin connector |
| T2cq | 2-pin connector |
| T2cr | 2-pin connector |
| T6mp | 6-pin connector |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T60aa | 60-pin connector |
| T94aa | 94-pin connector |
| D95 | Connection (injectors), in engine compartment wiring harness |
| E48 | Connection (injectors), in injection system wiring harness |
| D111 | Connection 9, in engine compartment wiring harness |
| G62 | Coolant temperature sender |
| G81 | Fuel temperature sender |
| G83 | Radiator outlet coolant temperature sender |
| G506 | Temperature sender before particulate filter |
| G507 | Temperature sender before turbocharger |
| G527 | Temperature sender after particulate filter |
| J527 | Steering column electronics control unit |
| J623 | Engine control unit |
| T2bt | 2-pin connector, black |
| T2bu | 2-pin connector |
| T2eh | 2-pin connector, black |
| T2el | 2-pin connector, black |
| T2gu | 2-pin connector, grey |
| T2gw | 2-pin connector, black |
| T6ma | 6-pin connector, white, on 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 |
| T60aa | 60-pin connector |
| T94aa | 94-pin connector |
| F36 | Clutch pedal switch |
| G70 | Air mass meter |
| J104 | ABS control unit |
| J293 | Radiator fan control unit |
| J623 | Engine control unit |
| SB26 | Fuse 26 on fuse holder B left |
| T4be | 4-pin connector |
| T4n | 4-pin connector |
| T5m | 5-pin connector, black |
| T10c | 10-pin connector, pink, electronics box engine compartment |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T47b | 47-pin connector |
| T94aa | 94-pin connector |
| V7 | Radiator fan |
| 12 | Earth point, on left in engine compartment |
| B278 | Positive connection 2 (15a), in main wiring harness |
| B289 | Positive connection 13 (15a), in main wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| D106 | Connection 4, in engine compartment wiring harness |
| * | only models with manual gearbox |
| ** | depends on equipment |
| G65 | High pressure sender |
| J17 | Fuel pump relay |
| J255 | Climatronic control unit |
| J301 | Air conditioning system control unit |
| J623 | Engine control unit |
| N75 | Charge pressure control solenoid valve |
| N79 | Heater element for crankcase breather |
| N345 | Exhaust gas recirculation cooler change-over valve |
| T2bh | 2-pin connector |
| T2bi | 2-pin connector, black |
| T2gm | 2-pin connector |
| T3bf | 3-pin connector |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T60aa | 60-pin connector |
| T94aa | 94-pin connector |
| 209 | Earth connection 6, in engine compartment wiring harness |
| 647 | Earth point 3, on bulkhead |
| D106 | Connection 4, in engine compartment wiring harness |
| D123 | Connection 21, in engine compartment wiring harness |
| D129 | Connection 27, in engine compartment wiring harness |
| * | models for cold countries only |
| J255 | Climatronic control unit |
| J301 | Air conditioning system control unit |
| J445 | Fuel cooling pump relay |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| J671 | Radiator fan control unit 2 |
| J715 | Tank circuit pressurisation relay |
| N280 | Air conditioning system compressor regulating valve |
| T4bf | 4-pin connector |
| T6k | 6-pin connector, brown, electronics box engine compartment |
| 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 |
| T18 | 18-pin connector |
| T94aa | 94-pin connector |
| V177 | Radiator fan 2 |
| 12 | Earth point, on left in engine compartment |
| D106 | Connection 4, in engine compartment wiring harness |
| D122 | Connection 20, in engine compartment wiring harness |
| D123 | Connection 21, in engine compartment wiring harness |
| * | only models with auxiliary heater (plenum) |
| G266 | Oil level and oil temperature sender |
| J285 | Control unit in dash panel insert |
| J533 | Data bus diagnostic interface |
| J623 | Engine control unit |
| K | Dash panel insert |
| T2ec | 2-pin connector |
| T3bd | 3-pin connector |
| T6ma | 6-pin connector, white, on electronics box engine compartment |
| T10d | 10-pin connector, blue, electronics box engine compartment |
| T10f | 10-pin connector, red, electronics box engine compartment |
| T10ma | 10-pin connector, black, electronics box engine compartment |
| T16b | 16-pin connector, self-diagnosis connection, driver footwell |
| T32a | 32-pin connector, blue |
| T32b | 32-pin connector, green |
| T94aa | 94-pin connector |
| V166 | Fuel cooling pump |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 646 | Earth point 2, on bulkhead |
| 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 |
| B509 | Connection 3 (diagnosis), in main wiring harness |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G6 | Fuel system pressurisation pump |
| G23 | Fuel pump |
| G32 | Coolant shortage indicator sender |
| G169 | Fuel gauge sender 2 |
| J285 | Control unit in dash panel insert |
| K | Dash panel insert |
| T1ac | Single connector |
| T2c | 2-pin connector, black |
| T4ct | 4-pin connector |
| T4cu | 4-pin connector |
| T4af | 4-pin connector, black, tank connection left |
| T5k | 5-pin connector, black, right tank connection |
| T10f | 10-pin connector, red, electronics box engine compartment |
| 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 |
| B344 | Connection 1 (61), in main wiring harness |
| B429 | Connection (EFPR), in main wiring harness |
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