| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| F18 | Thermal switch for radiator fan |
| J53 | Starter motor relay |
| J59 | X-contact relief relay |
| SA11 | Fuse 1 on fuse holder engine compartment |
| SA12 | Fuse 2 on fuse holder engine compartment |
| SA13 | Fuse 3 on fuse holder engine compartment |
| SA14 | Fuse 4 on fuse holder engine compartment |
| SA18 | Fuse 8 on fuse holder engine compartment |
| T3b | 3-pin connector, black |
| T4g | 4-pin connector, black, on fuse holder engine compartment |
| T8 | 8-pin connector |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T14 | 14-pin connector, black, on left on cylinder head |
| V7 | Radiator fan |
| 500 | Screw connection 1 (30), on relay plate |
| 501 | Screw connection 2 (30), on relay plate |
| 506 | Screw connection 3 (30), on relay plate |
| A32 | Positive connection (30), in dash panel wiring harness |
| A40 | Positive connection 1 (30), in dash panel wiring harness |
| * | Not models with air conditioning system |
| F8 | Kickdown switch |
| F60 | Idling speed switch |
| G79 | Accelerator position sender |
| J248 | Diesel direct injection system control unit |
| J317 | Terminal 30 voltage supply relay |
| SB23 | Fuse 23 on fuse holder |
| SB37 | Fuse 37 on fuse holder |
| T6c | 6-pin connector, on left under dash panel |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T121 | 121-pin connector |
| A32 | Positive connection (30), in dash panel wiring harness |
| A99 | Connection 1 (87), in dash panel wiring harness |
| B275 | Positive connection (87), in main wiring harness |
| F25 | Connection 1, in diesel direct injection system wiring harness |
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G62 | Coolant temperature sender |
| G71 | Intake manifold pressure sender |
| G72 | Intake manifold temperature sender |
| J248 | Diesel direct injection system control unit |
| J362 | Immobiliser control unit |
| T3g | 3-pin connector, on front of engine |
| T10 | 10-pin connector |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T14 | 14-pin connector, black, on left on cylinder head |
| T121 | 121-pin connector |
| 10 | Earth point, in plenum chamber |
| F27 | Connection (screening), in diesel direct injection wiring harness |
| F268 | Auxiliary heating heater element contact switch |
| G40 | Hall sender (for camshaft) |
| J248 | Diesel direct injection system control unit |
| N240 | Unit injector valve, No. 1 cylinder |
| N241 | Unit injector valve, No. 2 cylinder |
| N242 | Unit injector valve, No. 3 cylinder |
| T3l | 3-pin connector, on front of engine |
| T4 | 4-pin connector |
| T8l | 8-pin connector, on left in engine compartment |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T10u | 10-pin connector, pink |
| T121 | 121-pin connector |
| F28 | Connection 3, in diesel direct injection system wiring harness |
| F36 | Connection (87a), in diesel direct injection system wiring harness |
| G70 | Air mass meter |
| J248 | Diesel direct injection system control unit |
| N18 | Exhaust gas recirculation valve |
| N75 | Charge pressure control solenoid valve |
| T5 | 5-pin connector |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10m | 10-pin connector, brown, coupling station under relay carrier |
| T121 | 121-pin connector |
| V60 | Throttle valve module |
| 10 | Earth point, in plenum chamber |
| 131 | Earth connection 2, in engine compartment wiring harness |
| F36 | Connection (87a), in diesel direct injection system wiring harness |
| J248 | Diesel direct injection system control unit |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| S109 | Coolant heater element(s) fuse |
| S143 | Coolant heater element(s) fuse 2 |
| S265 | Coolant heater element(s) fuse 3 |
| T121 | 121-pin connector |
| Z35 | Auxiliary heating heater element |
| A1 | Positive connection (30a), in dash panel wiring harness |
| D98 | Connection (glow plugs), in engine compartment wiring harness |
| F36 | Connection (87a), in diesel direct injection system wiring harness |
| E35 | Air conditioning system switch |
| G81 | Fuel temperature sender |
| J104 | ABS control unit with EDL |
| J248 | Diesel direct injection system control unit |
| J293 | Radiator fan control unit |
| J514 | Electronic manual gearbox control unit |
| N79 | Crankcase breather heater breather |
| T10s | 10-pin connector, grey, coupling station under relay carrier |
| T121 | 121-pin connector |
| 12 | Earth point, on left in engine compartment |
| 220 | Earth connection (sender earth), in engine wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| F36 | Connection (87a), in diesel direct injection system wiring harness |
| L2 | Connection in air conditioning system wiring harness |
| * | Only models with air conditioning system |
| ** | Not models with air conditioning system |
| F | Brake light switch |
| F47 | Cruise control system brake pedal switch/diesel direct injection system |
| J234 | Airbag control unit |
| J248 | Diesel direct injection system control unit |
| J491 | Fuel shut-off control unit for crash |
| J514 | Electronic manual gearbox control unit |
| SB15 | Fuse 15 on fuse holder |
| SB24 | Fuse 24 on fuse holder |
| SB32 | Fuse 32 on fuse holder |
| T10 | 10-pin connector, white, coupling station under relay carrier |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10c | 10-pin connector, blue, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T10j | 10-pin connector, yellow, coupling station under relay carrier |
| T68 | 68-pin connector |
| T75 | 75-pin connector |
| T121 | 121-pin connector |
| 76 | Earth point, near selector mechanism |
| 81 | Earth connection 1, in dash panel wiring harness |
| D73 | Positive connection (54), in engine compartment wiring harness |
| D91 | Connection (speed signal), in engine compartment wiring harness |
| D | Ignition/starter switch |
| F1 | Oil pressure switch |
| G22 | Speedometer sender (Hall sender on gearbox) |
| J370 | Glow plug activation control unit |
| Q6 | Glow plugs - engine |
| SB28 | Fuse 28 on fuse holder |
| T8i | 8-pin connector, in engine compartment |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10b | 10-pin connector, black, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T11 | 11-pin connector |
| T14 | 14-pin connector, black, on left on cylinder head |
| 12 | Earth point, on left in engine compartment |
| A15 | Positive connection (15), in instrument panel wiring harness |
| B149 | Positive connection 2 (15a), in interior wiring harness |
| G | Fuel gauge sender |
| G32 | Coolant shortage indicator sender |
| H3 | Warning buzzer |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| T10b | 10-pin connector, black, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T14 | 14-pin connector, black, on left on cylinder head |
| T32 | 32-pin connector, blue |
| 85 | Earth connection 1, in engine compartment wiring harness |
| G1 | Fuel gauge |
| G3 | Coolant temperature display |
| G5 | Rev. counter |
| G21 | Speedometer |
| J285 | Control unit with display in dash panel insert |
| J533 | Data bus diagnosis interface, in dash panel insert |
| K2 | Alternator warning lamp |
| K29 | Glow period warning lamp |
| K105 | Reserve fuel warning lamp |
| T16 | 16-pin connector, self-diagnosis connection |
| T32 | 32-pin connector, blue |
| T32a | 32-pin connector, green |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| * | Revolution signal from engine control unit |
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