| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| E1 | Lighting switch |
| J59 | X contact relief relay |
| SA1 | Fuse -1- on battery fuse box |
| SA2 | Fuse -2- on battery fuse box |
| SA3 | Fuse -3- on battery fuse box |
| SA4 | Fuse -4- on battery fuse box |
| SA5 | Fuse -5- on battery fuse box |
| SA6 | Fuse -6- on battery fuse box |
| TV2 | Terminal 30 junction box |
| T3a | 3-pin connector, near battery |
| T5d | 5-pin connector, near gearbox |
| T10a | 10-pin connector, black |
| T17 | 17-pin connector |
| 1 | Earth strap, battery - body |
| 2 | Earth strap, gearbox - body |
| 500 | Screw connection -1- (30), on relay plate |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A61 | Positive (+) connection (X), in instruments wiring harness |
| A80 | Connection -1- (X), in dash panel wiring harness |
| D107 | Connection -5-, in engine compartment wiring harness |
| * | Only models with aditional heating |
| F8 | Kick-down switch |
| F60 | Idling switch |
| G79 | Accelerator pedal position sender |
| J52 | Glow plug relay |
| J248 | Diesel direct injection system control unit |
| J317 | Terminal 30 voltage supply relay |
| Q6 | Glow plugs - (engine) |
| SB1 | Fuse -1- on fuse box |
| SB23 | Fuse -23- on fuse box |
| SB24 | Fuse -24- on fuse box |
| SB37 | Fuse -37- on fuse box |
| T2b | 2-pin connector, in engine |
| T6e | 6-pin connector, on left C-pillar |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T80 | 80-pin connector |
| 167 | Earth connection -4-, in engine compartment wiring harness |
| A99 | Connection -1- (87), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| D112 | Connection -10-, in engine compartment wiring harness |
| F31 | Connection (glow plugs - engine), in diesel direct injection system wiring harness |
| G28 | Engine speed sender |
| G42 | Intake air temperature sender |
| G71 | Intake manifold pressure sender |
| G80 | Needle lift sender |
| J248 | Diesel direct injection system control unit |
| T2c | 2-pin connector |
| T3b | 3-pin connector, in engine compartment, front left |
| T10c | 10-pin connector, brown, in protective housing for connectors |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T80 | 80-pin connector |
| 167 | Earth connection -4-, in engine compartment wiring harness |
| 201 | Earth connection -5-, in engine compartment wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| D101 | Connection -1-, in engine compartment wiring harness |
| G81 | Fuel temperature sender |
| G149 | Modulating piston movement sender |
| J248 | Diesel direct injection system control unit |
| N75 | Charge pressure control solenoid valve |
| N146 | Metering adjuster |
| N239 | Intake manifold flap change-over valve |
| T10y | 10-pin connector, blue, A pillar, left |
| T80 | 80-pin connector |
| E30 | Connection (87a), in engine wiring harness |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| G70 | Air mass meter |
| J104 | ABS with EDL control unit |
| J248 | Diesel direct injection system control unit |
| J325 | Coolant heater element relay |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| N51 | Intake manifold preheating heater element |
| Q7 | Coolant heating elements |
| T10c | 10-pin connector, brown, in protective housing for connectors |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T25 | 25-pin connector |
| T80 | 80-pin connector |
| 80 | Earth connection -1-, in instruments wiring harness |
| D159 | Positive (+) connection (high bus), in engine compartment wiring harness |
| D160 | Positive (+) connection (low bus), in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| * | Only models with heater for radiator |
| ** | Only models without heater for radiator |
| *** | Data wire |
| G2 | Coolant temperature sender |
| G62 | Coolant temperature sender |
| J362 | Immobilizer control unit |
| J248 | Diesel direct injection system control unit |
| N18 | Exhaust gas recirculation valve |
| N108 | Commencement of injection valve |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T10g | 10-pin connector, red, in protective housing for connectors |
| T10x | 10-pin connector |
| T10y | 10-pin connector, blue, A pillar, left |
| T80 | 80-pin connector |
| 10 | Earth point, in plenum chamber |
| D102 | Connection -2-, in engine compartment wiring harness |
| F | Brake light switch |
| F36 | Clutch pedal 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 (crash) |
| M21 | Brake and tail light bulb, left |
| M22 | Brake and tail light bulb, right |
| M25 | High level brake light bulb |
| N109 | Fuel shut-off valve |
| SB15 | Fuse -15- on fuse box |
| SB28 | Fuse -28- on fuse box |
| SB32 | Fuse -32- on fuse box |
| T10a | 10-pin connector, black, in protective housing for connectors |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T50 | 50-pin connector |
| T80 | 80-pin connector |
| T10g | 10-pin connector, red, in protective housing for connectors |
| T10y | 10-pin connector, blue, A pillar, left |
| 109 | Earth connection, in airbag wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| D73 | Positive (+) connection (54), in engine compartment wiring harness |
| * | Does not apply to airbag |
| ** | Only models with airbag |
| F1 | Oil pressure switch |
| F18 | Radiator fan thermo-switch |
| G | Fuel gauge sender |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| T3b | 3-pin connector, in engine compartment, front left |
| T10c | 10-pin connector, brown, in protective housing for connectors |
| T10e | 10-pin connector, green, in protective housing for connectors |
| T10i | 10-pin connector, orange, in protective housing for connectors |
| V7 | Radiator fan |
| 12 | Earth point, in engine compartment, left |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G21 | Speedometer |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T32 | 32-pin connector, blue |
| Y4 | Odometer display |
| 45 | Earth point, behind dash panel - centre |
| 81 | Earth connection -1-, in dash panel wiring harness |
| G5 | Rev. counter |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K29 | Glow period warning lamp |
| K105 | Reserve fuel warning lamp |
| SB16 | Fuse -16- on fuse box |
| T10b | 10-pin connector, white, in protective housing for connectors |
| T10f | 10-pin connector, purple, in protective housing for connectors |
| T10g | 10-pin connector, red, in protective housing for connectors |
| T32 | 32-pin connector, blue |
| T32a | 32-pin connector, green |
| A21 | Connection (86s), in dash panel wiring harness |
| * | Data wire |
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