| A | Battery |
| B | Starter |
| D | Ignition/starter switch |
| 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 |
| SA7 | Fuse -7- on battery fuse box |
| SA8 | Fuse -8- on battery fuse box |
| T3a | 3-pin connector, on battery fuse box |
| T10a | 10-pin connector, black, coupling station under relay carrier, left |
| TV2 | Terminal 30 wiring junction |
| 1 | Earth strap, battery - body |
| 2 | Earth strap, gearbox - body |
| 500 | Screw connection -1- (30), on relay plate |
| 502 | Screw connection -1- (30a), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| D112 | Connection -10-, in engine compartment wiring harness |
| * | Only models with airbags |
| ** | Only models with heater for radiator |
| C | Alternator |
| C1 | Voltage regulator |
| J52 | Glow plug relay |
| J248 | Diesel direct injection system control unit |
| J317 | Terminal 30 voltage supply relay |
| Q6 | Glow plugs - (engine) |
| T2b | 2-pin connector, in engine compartment |
| T5d | 5-pin connector, in engine compartment, near gearbox |
| T10f | 10-pin connector, purple, coupling station under relay carrier, left |
| T80 | 80-pin connector |
| A99 | Connection -1- (87), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| F31 | Connection (glow plugs - engine) in diesel direct injection system wiring harness |
| * | Only models with heater for radiator |
| G28 | Engine speed sender |
| G80 | Needle lift sender |
| J248 | Diesel direct injection system control unit |
| J362 | Immobilizer control unit |
| SB31 | Fuse -31- on fuse box |
| T2c | 2-pin connector, near needle lift sender |
| T3d | 3-pin connector, near engine speed sender |
| T10a | 10-pin connector, black, coupling station under relay carrier, left |
| T10c | 10-pin connector, brown, coupling station under relay carrier, left |
| T10f | 10-pin connector, purple, coupling station under relay carrier, left |
| T10x | 10-pin connector, on immobilizer control unit |
| T80 | 80-pin connector |
| 44 | Earth point, lower part of left A-pillar |
| 201 | Earth connection -5-, in engine compartment wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| G81 | Fuel temperature sender |
| G149 | Modulating piston movement sender |
| J248 | Diesel direct injection system control unit |
| N18 | Exhaust gas recirculation valve |
| N146 | Metering adjuster |
| N239 | Intake manifold flap change-over valve |
| T10y | 10-pin connector, blue, on part of left A-pillar |
| 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 |
| J217 | Automatic gearbox control unit |
| J248 | Diesel direct injection system control unit |
| J325 | Relay for coolant heater elements, in engine |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| Q7 | Coolant heating elements |
| SB1 | Fuse -1- on fuse box |
| T5g | 5-pin connector, pink, coupling station under relay carrier, left |
| T10e | 10-pin connector, green, coupling station under relay carrier, left |
| T25 | 25-pin connector |
| T68 | 68-pin connector |
| T80 | 80-pin connector |
| 607 | Earth point, on left in plenum chamber |
| E30 | Connection (87a), in engine wiring harness |
| D159 | Positive (+) connection (high bus), in interior wiring harness |
| D160 | Positive (+) connection (low bus), in engine compartment wiring harness |
| * | Only models with heater for radiator |
| ** | Depends on equipment |
| E35 | Air conditioner switch |
| G2 | Coolant temperature sender |
| G62 | Coolant temperature sender |
| G65 | High pressure sender |
| J248 | Diesel direct injection system control unit |
| N51 | Intake manifold preheating heater element |
| N75 | Charge pressure control solenoid valve |
| N108 | Commencement of injection valve |
| SB23 | Fuse -23- on fuse box |
| T10c | 10-pin connector, brown, coupling station under relay carrier, left |
| T10e | 10-pin connector, green, coupling station under relay carrier, left |
| T10g | 10-pin connector, red, coupling station under relay carrier, left |
| T10y | 10-pin connector, blue, on part of left A-pillar |
| T80 | 80-pin connector |
| 43 | Earth point, lower part of right A-pillar |
| 80 | Earth connection -1-, in instruments wiring harness |
| 199 | Earth connection -3-, in dash panel wiring harness |
| D61 | Connection (air conditioner), in engine compartment wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
| * | Only models with heater for radiator |
| ** | Only models without heater for radiator |
| *** | Engine speed signal from engine control unit |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch (diesel direct injection system) |
| J104 | ABS with EDL control unit |
| J138 | Radiator fan run-on control unit |
| J248 | Diesel direct injection system control unit |
| J293 | Radiator fan control unit |
| M9 | Brake light bulb, left |
| M10 | Brake light bulb, right |
| M25 | High level brake light bulb |
| SB15 | Fuse -15- on fuse box |
| SB24 | Fuse -24- on fuse box |
| SB32 | Fuse -32- on fuse box |
| T10a | 10-pin connector, black, coupling station under relay carrier, left |
| T10f | 10-pin connector, purple, coupling station under relay carrier, left |
| T10g | 10-pin connector, red, coupling station under relay carrier, left |
| T80 | 80-pin connector |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| D73 | Positive (+) connection (54), in engine compartment wiring harness |
| * | Only models with air conditioner |
| ** | Only for engine codes ASK, ASV |
| J234 | Airbag control unit |
| J248 | Diesel direct injection system control unit |
| J491 | Fuel shut-off control unit (crash) |
| N109 | Fuel shut-off valve |
| SB37 | Fuse -37- on fuse box |
| T10f | 10-pin connector, purple, coupling station under relay carrier, left |
| T10y | 10-pin connector, blue, on part of left A-pillar |
| T50 | 50-pin connector |
| T80 | 80-pin connector |
| 45 | Earth point, behind dash panel - centre |
| 109 | Earth connection, in airbag wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| D101 | Connection -1-, in engine compartment wiring harness |
| * | Only models with airbags |
| ** | Only models without airbags |
| *** | Does not models with driver airbag |
| G | Fuel gauge sender |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| F1 | Oil pressure switch |
| F18 | Radiator fan thermo-switch |
| SB28 | Fuse -28- on fuse box |
| T3b | 3-pin connector, on radiator fan |
| T10c | 10-pin connector, brown, coupling station under relay carrier, left |
| T10e | 10-pin connector, green, coupling station under relay carrier, left |
| T10i | 10-pin connector, orange, coupling station under relay carrier, left |
| V7 | Radiator fan |
| 12 | Earth point, left in engine compartment |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| 608 | Earth point, in centre of plenum chamber |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| G21 | Speedometer |
| 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 |
| K105 | Reserve fuel warning lamp |
| T10e | 10-pin connector, green, coupling station under relay carrier, left |
| T10f | 10-pin connector, purple, coupling station under relay carrier, left |
| T32 | 32-pin connector, blue, on dash panel insert |
| Y4 | Odometer display |
| 179 | Earth connection, in left headlight wiring harness |
| 608 | Earth point, in centre of plenum chamber |
| * | Output for signal earth |
| J285 | Control unit with display in dash panel insert |
| J533 | Data bus diagnostic interface |
| K2 | Alternator warning lamp |
| K29 | Glow period warning lamp |
| SB16 | Fuse -16- on fuse box |
| T10b | 10-pin connector, white, coupling station under relay carrier, left |
| T10c | 10-pin connector, brown, coupling station under relay carrier, left |
| T10f | 10-pin connector, purple, coupling station under relay carrier, left |
| T10g | 10-pin connector, red, coupling station under relay carrier, left |
| T16 | 16-pin connector, diagnostic connector |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 45 | Earth point, behind dash panel - centre |
| 81 | Earth connection -1-, in dash panel wiring harness |
| A21 | Connection (86s), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
