| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| F214 | Engine compartment lighting switch |
| J47 | Heated windscreen relay, left behind dash panel |
| J162 | Heater control unit (for vehicles with water heater D3W only) |
| J362 | Immobilizer control unit, left behind dash panel |
| J379 | Central locking and anti-theft alarm system control unit |
| N79 | Heater element (crankcase breather) |
| T1f | Single connector, near starter |
| T4d | 4-pin connector, behind relay plate |
| T6 | 6-pin connector, on immobilizer control unit |
| T10 | 10-pin connector |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| J248 | Diesel direct injection system control unit, left behind dash panel |
| J317 | Terminal 30 voltage supply relay |
| J362 | Immobilizer control unit, left behind dash panel |
| N18 | Exhaust gas recirculation valve |
| N75 | Charge pressure control solenoid valve |
| N108 | Commencement of injection valve |
| N109 | Fuel shut-off valve |
| T6 | 6-pin connector, on immobilizer control unit |
| T10 | 10-pin connector, near diesel injection pump |
| T68 | 68-pin connector |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| G28 | Engine speed sender |
| G70 | Air mass meter |
| G72 | Intake manifold temperature sender |
| J248 | Diesel direct injection system control unit, left behind dash panel |
| T3m | 3-pin connector, near engine speed sender |
| T24 | 24-pin connector, on engine |
| T68 | 68-pin connector |
| 45 | Earth point, behind dash panel - centre |
| 156 | Earth connection, in diesel direct injection wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Cruise cont. sys. brake pedal switch (diesel direct inj. system) |
| G81 | Fuel temperature sender |
| G149 | Modulating piston movement sender |
| J248 | Diesel direct injection system control unit, left behind dash panel |
| N146 | Metering adjuster |
| T10 | 10-pin connector, near diesel injection pump |
| T68 | 68-pin connector |
| TV11 | Terminal 54 junction box, left behind dash panel |
| 220 | Earth connection (sender earth), in engine wiring harness |
| F26 | Connection -2-, in diesel direct injection system wiring harness |
| W1 | Positive (+) connection (54), in rear wiring harness |
| E45 | Cruise control system switch |
| F4 | Reversing light switch |
| F38 | Ambient temperature switch (for vehicles with water heater D3W only) |
| J47 | Heated windscreen relay, left behind dash panel |
| J248 | Diesel direct injection system control unit, left behind dash panel |
| T6d | 6-pin connector, behind relay plate |
| T6e | 6-pin connector, behind steering column switch trim |
| T68 | 68-pin connector |
| TV5 | Terminal 15a junction box, left behind dash panel |
| TV13 | Speed signal junction box, left behind dash panel |
| A | Battery |
| J359 | Low heat output relay, left in engine compartment |
| J360 | High heat output relay, left in engine compartment |
| Q6 | Glow plugs - (engine) |
| Q7 | Coolant heating elements |
| S109 | Coolant heater element fuse, left in engine compartment |
| S125 | Glow plugs fuse (engine), above the relay plate |
| S143 | Coolant heater elements fuse 2, left in engine compartment |
| T24 | 24-pin connector, on engine |
| F31 | Connection (glow plugs - engine), in diesel direct injection system wiring harness |
| F32 | Connection (glow plugs - coolant), in diesel direct injection system wiring harness |
| F33 | Positive connection (30), in diesel direct injection system wiring harness |
| F1 | Oil pressure switch |
| F22 | Oil pressure switch (0.3 bar) |
| G | Fuel gauge sender |
| G2 | Coolant temperature sender |
| G22 | Speedometer sender (Hall sender on gearbox) |
| G62 | Coolant temperature sender |
| R | Radio |
| T8 | 8-pin connector, on radio |
| T24 | 24-pin connector, on engine |
| 18 | Earth point on engine, left |
| R6 | Positive connection -1-, in interior light wiring harness |
| W15 | Connection -1- (luggage compartment light), in rear wiring harness |
| G8 | Oil temperature sender |
| G17 | Ambient temperature sensor |
| G32 | Coolant shortage indicator sender |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| T8c | 8-pin connector, behind relay plate |
| T24 | 24-pin connector, on engine |
| T28 | 28-pin connector |
| T28a | 28-pin connector |
| 18 | Earth point on engine, left |
| E109 | Multi-function display, memory switch |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G21 | Speedometer |
| J119 | Multi-function display |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K29 | Glow period warning lamp |
| K105 | Reserve fuel warning lamp, (for multi-function indicator only) |
| L75 | Digital display illumination |
| R | Radio |
| T3h | 3-pin connector, behind steering column switch trim |
| T8 | 8-pin connector, on radio |
| T28 | 28-pin connector |
| T28a | 28-pin connector |
| Y4 | Odometer display |
| 135 | Earth connection -2-, in dash panel wiring harness |
| A60 | Connection (speed signal), in dash panel wiring harness |
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