| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J207 | Starter inhibitor relay |
| J442 | Alternator cut-in relay |
| S204 | Fuse -1- (30) |
| T1n | Single connector, red, near alternator, in engine compartment, front right |
| T2ad | 2-pin connector, black, near alternator, in engine compartment, front right |
| T10c | 10-pin connector, green, connector point, electronics box, plenum chamber |
| TV1 | Junction box |
| TV2 | Terminal 30 junction box |
| 51 | Earth point, luggage compartment, right |
| A17 | Connection (61), in dash panel wiring harness |
| A86 | Connection (50a), in dash panel wiring harness |
| E104 | Earth connection, in dash panel wiring harness (near relay point) |
| * | Models with manual gearbox |
| ** | Models with automatic gearbox |
| *** | Only models with 150 A alternator |
| F125 | Multi-function switch |
| J52 | Glow plug relay |
| J495 | Glow plug relay 2 |
| Q6 | Glow plugs-engine |
| S39 | Fuse 1 for glow plugs-engine |
| S125 | Fuse 2 for glow plugs-engine |
| T2ch | 2-pin connector, black, connection for glow plugs, cylinder 2 and 3 |
| T2ci | 2-pin connector, black, connection for glow plugs, cylinder 7 and 8 |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T10ab | 10-pin connector, black, on gearbox |
| A52 | Positive (+) connection 2 (30), in dash panel wiring harness |
| D16 | Connection (glow plugs), in front right wiring harness |
| D98 | Connection (glow plugs), in engine compartment wiring harness |
| E100 | Connection (multi-function switch), in dash panel wiring harness |
| * | Models with automatic gearbox |
| # | Relay and fuse carrier, electronics box, plenum chamber, below position: 1 |
| ## | Relay and fuse carrier, electronics box, plenum chamber, below position: 5 |
| F | Brake light switch |
| F47 | Cruise control system brake pedal switch (diesel direct injection system) |
| J248 | Diesel direct injection system control unit |
| M9 | Brake light bulb, left |
| M10 | Brake light bulb, right |
| N18 | Exhaust gas recirculation valve |
| N75 | Charge pressure control solenoid valve |
| N144 | Electro/hydraulic engine mounting solenoid valve, left |
| N145 | Electro/hydraulic engine mounting solenoid valve, right |
| N213 | Exhaust gas recirculation valve 2 |
| N274 | Charge pressure control solenoid valve 2 |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10c | 10-pin connector, green, connector point, electronics box, plenum chamber |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| A18 | Connection (54), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| F26 | Connection -2-, in diesel direct injection system wiring harness |
| G40 | Hall sender |
| G70 | Air mass meter |
| G246 | Air mass meter 2 |
| J49 | Electric fuel pump relay 2 |
| J248 | Diesel direct injection system control unit |
| J445 | Fuel cooling pump relay |
| J494 | Diesel direct injection system control unit 2 |
| N239 | Intake manifold flap change-over valve |
| N290 | Fuel metering valve |
| N312 | Fuel by-pass valve |
| N313 | Radiator fan valve |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| E30 | Connection (87a), in engine wiring harness |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| J248 | Diesel direct injection system control unit |
| J317 | Terminal 30 voltage supply relay |
| J494 | Diesel direct injection system control unit 2 |
| N30 | Injector, cylinder 1 |
| N32 | Injector, cylinder 3 |
| S117 | Control element fuse |
| T6e | 6-pin connector, brown, connector point, electronics box, plenum chamber |
| T10b | 10-pin connector, yellow, connector point, electronics box, plenum chamber |
| T10c | 10-pin connector, green, connector point, electronics box, plenum chamber |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| D101 | Connection -1-, in engine compartment wiring harness |
| E109 | Connection (30, central electrics), in dash panel wiring harness |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| • | CAN bus (data wire) |
| * | Only models with 150 A alternator |
| G2 | Coolant temperature sender |
| G8 | Oil temperature sender |
| G62 | Coolant temperature sender |
| G81 | Fuel temperature sender |
| J248 | Diesel direct injection system control unit |
| J494 | Diesel direct injection system control unit 2 |
| N31 | Injector, cylinder 2 |
| N33 | Injector, cylinder 4 |
| N312 | Fuel by-pass valve |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| F35 | Connection -4-, in diesel direct injection system wiring harness |
| F36 | Connection (87a), in diesel direct injection system wiring harness |
| E87 | Control and display unit for air conditioner |
| J104 | ABS with EDL control unit |
| J218 | Combi-processor in dash panel insert |
| J234 | Airbag control unit |
| J248 | Diesel direct injection system control unit |
| T6t | 6-pin connector, red, footwell, right, at wheelhouse, behind carpet |
| T16 | 16-pin connector, connector plug C at V94 |
| T32a | 32-pin connector, green, on dash panel insert |
| V94 | Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| • | CAN bus (data wire) |
| D | Ignition/starter switch |
| E45 | Cruise control system switch |
| G247 | Fuel pressure sender |
| G266 | Oil level thermo sender |
| J248 | Diesel direct injection system control unit |
| S6 | Fuse in fuse carrier |
| S8 | Fuse in fuse carrier |
| T6y | 6-pin connector, black, behind steering column switch trim |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A16 | Connection (CCS), in dash panel wiring harness |
| A74 | Connection (15a, fuse 6), in dash panel wiring harness |
| D51 | Positive (+) connection -1- (15), in engine compartment wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| * | Models with cruise control system |
| F8 | Kick-down switch |
| F60 | Idling switch |
| G79 | Accelerator pedal position sender |
| J248 | Diesel direct injection system control unit |
| J536 | Charge air cooling pump relay |
| N276 | Fuel pressure regulating valve |
| S78 | Coolant pump fuse |
| S267 | Regulating valve fuse |
| T10b | 10-pin connector, yellow, connector point, electronics box, plenum chamber |
| V188 | Charge air cooling pump |
| 108 | Earth connection -2-, in front left wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
| J17 | Fuel pump relay |
| J248 | Diesel direct injection system control unit |
| J364 | Additional heater control unit |
| Q8 | Glow plugs with flame monitor |
| S1 | Fuse in fuse carrier |
| S9 | Fuse in fuse carrier |
| S10 | Fuse in fuse carrier |
| T2bl | 2-pin connector, on additional heater control unit |
| T6w | 6-pin connector, on additional heater control unit |
| T10c | 10-pin connector, green, connector point, electronics box, plenum chamber |
| V6 | Combustion air blower |
| V54 | Metering pump |
| E109 | Connection (30, central electrics), in dash panel wiring harness |
| E113 | Earth connection, in dash panel wiring harness, right |
| L35 | Connection -3-, in heater unit wiring harness |
| E87 | Control and display unit for air conditioner |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| J26 | Radiator fan relay |
| J135 | Radiator fan 3rd speed relay |
| J138 | Radiator fan run-on relay |
| N39 | Radiator fan series resistor |
| S4 | Fuse in fuse carrier |
| S42 | Radiator fan single fuse |
| T2x | 2-pin connector, brown, at radiator fan |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| V7 | Radiator fan |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 108 | Earth connection -2-, in front left wiring harness |
| A36 | Connection (75a), in dash panel wiring harness |
| A52 | Positive (+) connection -2- (30), in dash panel wiring harness |
| C11 | Connection in radiator fan wiring harness |
| C23 | Connection (radiator fan speed I), in headlight/air conditioner wiring harness |
| E106 | Connection (30, radiator fan), in dash panel wiring harness |
| * | Near ABS control unit |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G6 | Fuel pump (pre-supply pump) |
| G21 | Speedometer |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| G169 | Fuel gauge sender 2 |
| J218 | Combi-processor in dash panel insert |
| K2 | Alternator warning lamp |
| K16 | Reserve fuel warning lamp |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| 49 | Earth point, near fuel pump |
| 102 | Earth connection, in gearbox wiring harness |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| F1 | Oil pressure switch |
| J218 | Combi-processor in dash panel insert |
| K | Diagnosis connection |
| K3 | Oil pressure warning lamp |
| S1 | Fuse in fuse carrier |
| S4 | Fuse in fuse carrier |
| T10 | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T10a | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T16a | 16-pin connector, diagnosis connection |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| E103 | Connection (15a), in dash panel wiring harness, right |
| E105 | Earth connection, in dash panel wiring harness, left |
| L11 | Connection -3-, in air conditioner wiring harness |
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