| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| S131 | Fuse 1 |
| S132 | Fuse 2 |
| S133 | Fuse 3 |
| S134 | Fuse 4 |
| S138 | Fuse 5 |
| S162 | Fuse -1- (30), in fuse box/battery |
| S163 | Fuse -2- (30), in fuse box/battery |
| S164 | Fuse -3- (30), in fuse box/battery |
| T2f | 2-pin connector, alternator, in engine compartment, left |
| T3e | 3-pin connector, black, on main fuse box |
| T4b | 4-pin connector, in engine compartment, left |
| T6m | 6-pin connector, brown, in plenum chamber |
| 2 | Earth strap, gearbox - body |
| 12 | Earth point, in engine compartment, left |
| 156 | Earth connection, in diesel direct injection wiring harness |
| * | Only models with air conditioner |
| ** | Only models without air conditioner |
| D | Ignition/starter switch |
| S5 | Fuse in fuse box/relay plate |
| S7 | Fuse in fuse box/relay plate |
| S10 | Fuse in fuse box/relay plate |
| S11 | Fuse in fuse box/relay plate |
| S13 | Fuse in fuse box/relay plate |
| S228 | Fuse in fuse box |
| S229 | Fuse in fuse box |
| S232 | Fuse in fuse box |
| S237 | Fuse in fuse box |
| S234 | Fuse in fuse box |
| S243 | Fuse in fuse box |
| T6m | 6-pin connector, brown, in plenum chamber |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A101 | Connection -3- (87), in dash panel wiring harness |
| B135 | Connection -1- (15a), in interior wiring harness |
| B138 | Positive (+) connection (X), in interior wiring harness |
| B146 | Positive (+) connection -1- (87), in interior wiring harness |
| * | Only models with four-wheel drive |
| ** | As of November 2001 no longer fitted |
| *** | From November 2001 onwards |
| J52 | Glow plug relay |
| J248 | Diesel direct injection system control unit |
| J322 | Diesel direct injection system relay |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| Q6 | Glow plugs - (engine) |
| Q7 | Coolant heating elements |
| T2n | 2-pin connector, wiring duct, in engine compartment, left |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10g | 10-pin connector, blue, in plenum chamber |
| 156 | Earth connection, in diesel direct injection wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| B156 | Positive (+) connection (30a), in interior wiring harness |
| D78 | Positive (+) connection -1- (30a), in engine compartment wiring harness |
| D102 | Connection -2-, in engine compartment wiring harness |
| F32 | Connection (coolant heating elements), in diesel direct injection system wiring harness |
| * | Only models with heater elements and heater for crankcase breather |
| G70 | Air mass meter |
| J248 | Diesel direct injection system control unit |
| N18 | Exhaust gas recirculation valve |
| N75 | Charge pressure control solenoid valve |
| N239 | Intake manifold flap change-over valve |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10 | 10-pin connector, white, in plenum chamber |
| T14 | 14-pin connector, in engine compartment, left |
| A15 | Positive (+) connection (15), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| D101 | Connection -1-, in engine compartment wiring harness |
| * | Only models with heater elements |
| ** | Only models without heater elements |
| *** | As of November 2001 no longer fitted |
| **** | From November 2001 onwards |
| E87 | Control and display unit for air conditioner/Climatronic |
| G81 | Fuel temperature sender |
| G149 | Modulating piston movement sender |
| J248 | Diesel direct injection system control unit |
| N108 | Commencement of injection valve |
| N109 | Fuel shut-off valve |
| N146 | Metering adjuster |
| T10h | 10-pin connector, black, on injection pump, in engine compartment |
| T10x | 10-pin connector, orange, in plenum chamber |
| T14 | 14-pin connector, in engine compartment, left |
| A100 | Connection -2- (87), in dash panel wiring harness |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| * | Only models with air conditioner |
| F8 | Kick-down switch |
| F60 | Idling switch |
| G28 | Engine speed sender |
| G71 | Intake manifold pressure sender |
| G72 | Intake manifold temperature sender |
| G79 | Accelerator pedal position sender |
| G80 | Needle lift sender |
| J234 | Airbag control unit |
| J248 | Diesel direct injection system control unit |
| T2i | 2-pin connector, black, on needle lift sender |
| T3n | 3-pin connector, grey, engine speed sender, in engine compartment |
| T10 | 10-pin connector, white, in plenum chamber |
| T10g | 10-pin connector, blue, in plenum chamber |
| A125 | Connection (crash signal), in dash panel wiring harness |
| F27 | Connection (screening), in diesel direct injection wiring harness |
| E45 | Cruise control system switch |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| J248 | Diesel direct injection system control unit |
| N79 | Heater element (crankcase breather) |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10 | 10-pin connector, white, in plenum chamber |
| T10e | 10-pin connector, black, in plenum chamber |
| T10x | 10-pin connector, orange, in plenum chamber |
| 156 | Earth connection, in diesel direct injection wiring harness |
| A108 | Connection (speed signal), in dash panel wiring harness |
| B148 | Positive (+) connection -3- (87), in interior wiring harness |
| B185 | Connection -2- (54), in interior wiring harness |
| * | Only models with cruise control system |
| ** | Only models with manual gearbox |
| *** | Only models with heater elements |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| G2 | Coolant temperature sender |
| G62 | Coolant temperature sender |
| J248 | Diesel direct injection system control unit |
| J397 | Radiator fan run-on relay |
| T14 | 14-pin connector, in engine compartment, left |
| T10 | 10-pin connector, white, in plenum chamber |
| T10x | 10-pin connector, orange, in plenum chamber |
| V7 | Radiator fan |
| 11 | Earth point, in battery box |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| A45 | Connection (engine speed signal), in dash panel wiring harness |
| A68 | Connection (30, air conditioner), in dash panel wiring harness |
| L26 | Connection (radiator fan), in engine compartment - Climatronic wiring harness |
| * | Only applies to models with engine code ASV |
| ** | Only applies to models with engine code ALH |
| G | Fuel gauge sender |
| G6 | Fuel pump (pre-supply pump) |
| J17 | Fuel pump relay |
| J218 | Combi-processor in dash panel insert |
| J248 | Diesel direct injection system control unit |
| T10 | 10-pin connector, white, in plenum chamber |
| T10x | 10-pin connector, orange, in plenum chamber |
| T16 | 16-pin connector, black, centre console compartment (diagnostic connector) |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| 277 | Earth connection -3-, in interior wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| B147 | Positive (+) connection -2- (87), in interior wiring harness |
| * | Only models with four-wheel drive |
| F1 | Oil pressure switch |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| G266 | Oil level/oil temperature sender |
| J218 | Combi-processor in dash panel insert |
| K2 | Alternator warning lamp |
| K29 | Glow period warning lamp |
| T14 | 14-pin connector, in engine compartment, left |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 10 | Earth point, in plenum chamber |
| A23 | Connection (30al), in dash panel wiring harness |
| A80 | Connection -1- (X), in dash panel wiring harness |
| B149 | Positive (+) connection -2- (15a), in interior wiring harness |
| B178 | Connection (speed signal), in interior wiring harness |
| * | As of model year 2002 no longer fitted |
| ** | Only applicable from model year 2002 onwards |
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