| A | Battery |
| B | Starter |
| CX1 | Alternator with voltage regulator |
| J519 | Onboard power supply control unit |
| SA1 | Fuse -1- (30), in the E box |
| T2t | 2-pin connector, in engine compartment, front left (on vehicles with heating) |
| T4n | 4-pin connector, in engine compartment, front left (on vehicles with Climatic / Climatronic) |
| T52ac | 52-pin connector, on the onboard power supply control unit (brown) |
| 1 | Earth strap, battery body |
| 12 | Earth point, on left in engine compartment (at longitudinal member) |
| 14 | Earth point, on gearbox |
| B177 | Connection (61), in interior wiring harness |
| *1 | on vehicles with alternator 90A / 110A |
| *2 | on vehicles with alternator 140A |
| *3 | not valid for vehicles with automatic gearbox |
| *4 | for vehicles with automatic gearbox |
| J217 | Automatic gearbox control unit, below the front left mud wing |
| J519 | Onboard power supply control unit |
| SC1 | Fuse -1-, in fuse holder |
| SC27 | Fuse -27-, in fuse holder |
| SC29 | Fuse -29-, in fuse holder |
| SC30 | Fuse -30-, in fuse holder |
| SC31 | Fuse -31-, in fuse holder |
| T14a | 14-pin connector, on front left in engine compartment (black) |
| A20 | Positive connection -1- (15a), in dash panel wiring harness |
| B280 | Positive connection -4- (15a), in interior wiring harness |
| B315 | Positive connection -1- (30a), in interior wiring harness |
| * | only on vehicles with automatic gearbox |
| J519 | Onboard power supply control unit |
| J682 | Terminal 50 voltage supply relay, at relay holder below the onboard power supply control unit |
| SC2 | Fuse -2-, in fuse holder |
| SC4 | Fuse -4-, in fuse holder |
| T52ab | 52-pin connector, on the onboard power supply control unit (white) |
| T52ac | 52-pin connector, on the onboard power supply control unit (brown) |
| 374 | Earth connection -9-, in interior wiring harness |
| A20 | Positive connection -1- (15a), in dash panel wiring harness |
| A38 | Positive connection -2- (15a), in dash panel wiring harness |
| B239 | Positive connection -1- (50), in interior wiring harness |
| B279 | Positive connection -3- (15a), in interior wiring harness |
| * | only on vehicles with extended servicing intervals (ESI) |
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| G186 | Throttle valve drive |
| G187 | Throttle valve drive angle sender -1- |
| G188 | Throttle valve drive angle sender -2- |
| J338 | Throttle valve control unit |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| T6l | 6-pin connector, at accelerator pedal position sender |
| T6o | 6-pin connector, on the throttle valve control unit |
| T40b | 40-pin connector, at engine control unit |
| T81a | 81-pin connector, at engine control unit |
| G28 | Engine speed sender |
| G40 | Camshaft position sender |
| G83 | Coolant temperature sender at radiator outlet |
| J293 | Radiator fan control unit |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| T3l | 3-pin connector, at engine speed sender |
| T3m | 3-pin connector, at camshaft position sender |
| T4p | 4-pin connector, in the holder on the left radiator |
| T40b | 40-pin connector, at engine control unit |
| T81a | 81-pin connector, at engine control unit |
| 220 | Earth connection (sender earth), in engine wiring harness |
| * | only on vehicles with optional equipment, depending upon the type of radiator fan |
| G39 | Lambda probe |
| G130 | Lambda probe after catalytic converter |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| T4r | 4-pin connector, at the lambda probe after catalytic converter |
| T6n | 6-pin connector, at the lambda probe (black), at the front wall, left |
| T81a | 81-pin connector, at engine control unit |
| D180 | Connection -1- (87a), in engine compartment wiring harness |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| N80 | Activated charcoal filter system solenoid valve |
| N156 | Variable intake manifold change-over valve |
| T4t | 4-pin connector, at intake air temperature sender and intake manifold pressure |
| T14a | 14-pin connector, on front left in engine compartment (black) |
| T40b | 40-pin connector, at engine control unit |
| D173 | Connection (87a), in engine wiring harness |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| N152 | Ignition transformer |
| P | Spark plug connector |
| Q | Spark plug |
| T4s | 4-pin connector, at ignition transformer |
| T14a | 14-pin connector, on front left in engine compartment (black) |
| T40b | 40-pin connector, at engine control unit |
| T81a | 81-pin connector, at engine control unit |
| V101 | Secondary air pump motor |
| 44 | Earth point -1-, on lower part of left A-pillar |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 167 | Earth connection -4-, in engine compartment wiring harness |
| 673 | Earth point -3-, on left in engine compartment (at longitudinal member) |
| F | Brake light switch, at master brake cylinder |
| F47 | Brake pedal switch, at master brake cylinder |
| G476 | Clutch position sender |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| J527 | Steering column electronics control unit |
| T4c | 4-pin connector, at brake pedal switch |
| T5j | 5-pin connector, at clutch position sender |
| T16n | 16-pin connector, at steering column electronics control unit |
| T52ac | 52-pin connector, on the onboard power supply control unit (brown) |
| T81a | 81-pin connector, at engine control unit |
| 374 | Earth connection -9-, in interior wiring harness |
| A18 | Connection (54), in dash panel wiring harness |
| * | not valid for vehicles with automatic gearbox |
| G | Fuel gauge sender |
| G6 | Fuel pump |
| J17 | Fuel pump relay, at additional relay holder above the onboard power supply control unit |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| J643 | Fuel supply relay, at relay holder below the onboard power supply control unit |
| T5k | 5-pin connector, on the fuel pump |
| T52ab | 52-pin connector, on the onboard power supply control unit (white) |
| T81a | 81-pin connector, at engine control unit |
| 366 | Earth connection -1-, in interior wiring harness |
| B323 | Positive connection -9- (30a), in interior wiring harness |
| B351 | Positive connection -2- (87a), in interior wiring harness |
| J361 | Simos control unit |
| J519 | Onboard power supply control unit |
| J659 | Gas mode control unit |
| T6ag | 6-pin connector, near the injection valves |
| T10v | 10-pin connector, on rear left in engine compartment (black) |
| T32d | 32-pin connector, at gas mode control unit |
| T40b | 40-pin connector, at engine control unit |
| T48a | 48-pin connector, at gas mode control unit |
| T81a | 81-pin connector, at engine control unit |
| E395 | Fuel selection switch (petrol, gas) |
| J519 | Onboard power supply control unit |
| J659 | Gas mode control unit |
| L76 | Light switch illumination bulb |
| T6al | 6-pin connector, at fuel selection switch (petrol, gas) |
| T10v | 10-pin connector, on rear left in engine compartment (black) |
| T32d | 32-pin connector, at gas mode control unit |
| T48a | 48-pin connector, at gas mode control unit |
| 359 | Earth connection, in gas mode wiring harness |
| 368 | Earth connection -3-, in interior wiring harness |
| A19 | Connection (58d), in dash panel wiring harness |
| G13 | Connection -2-, in gas mode wiring harness |
| G707 | Gas supply display sender |
| J519 | Onboard power supply control unit |
| J659 | Gas mode control unit |
| N495 | Gas tank valve |
| T4al | 4-pin connector, at gas supply display sender |
| T6ak | 6-pin connector, under right rear bench seat (black) |
| T10v | 10-pin connector, on rear left in engine compartment (black) |
| T48a | 48-pin connector, at gas mode control unit |
| G14 | Connection -3-, in gas mode wiring harness |
| G706 | Gas supply display |
| J285 | Control unit in dash panel insert |
| J519 | Onboard power supply control unit |
| J533 | Data bus diagnostic interface, below dash panel |
| K | Dash panel insert |
| K28 | Coolant temperature and coolant shortage indicator warning lamp |
| K192 | Natural gas mode warning lamp |
| K249 | Warning light for engine cold |
| T16b | 16-pin connector, for diagnostic connection |
| T20c | 20-pin connector, at data bus diagnostic interface |
| T32c | 32-pin connector, at dash panel insert |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| B383 | Connection -1- (CAN H, drive), in interior wiring harness |
| B390 | Connection -1- (CAN L, drive), in interior wiring harness |
| F1 | Oil pressure switch |
| G1 | Fuel gauge |
| G5 | Rev. Counter |
| G21 | Speedometer |
| G266 | Oil level/oil temperature sender |
| J285 | Control unit in dash panel insert |
| J519 | Onboard power supply control unit |
| K | Dash panel insert |
| K3 | Oil pressure warning lamp |
| K38 | Oil level warning lamp |
| K83 | Exhaust emissions warning lamp |
| K105 | Fuel reserve warning lamp |
| K132 | Electronic power control fault lamp |
| T6j | 6-pin connector, on front left in engine compartment (black) |
| T14a | 14-pin connector, on front left in engine compartment (black) |
| T32c | 32-pin connector, at dash panel insert |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| 374 | Earth connection -9-, in interior wiring harness |
| * | only on vehicles with extended servicing intervals (ESI) |
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