| 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 holder on battery |
| S163 | Fuse 2 (30) in fuse holder on battery |
| S164 | Fuse 3 (30) in fuse holder on battery |
| T2f | 2-pin connector, alternator, in left engine compartment |
| T3e | 3-pin connector, black, on main fuse box |
| T4b | 4-pin connector, in left engine compartment |
| T6m | 6-pin connector, brown, in plenum chamber |
| 2 | Earth strap, gearbox - body |
| 12 | Earth point, on left in engine compartment |
| 156 | Earth connection, in diesel direct injection wiring harness |
| * | only models with air conditioning system |
| ** | only models without air conditioning system |
| D | Ignition/starter switch |
| S5 | Fuse in relay plate fuse holder |
| S7 | Fuse in relay plate fuse holder |
| S10 | Fuse in relay plate fuse holder |
| S11 | Fuse in relay plate fuse holder |
| S13 | Fuse in relay plate fuse holder |
| S228 | Fuse in fuse holder |
| S229 | Fuse in fuse holder |
| S232 | Fuse in fuse holder |
| S234 | Fuse in fuse holder |
| S237 | Fuse in fuse holder |
| S243 | Fuse in fuse holder |
| 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 |
| ** | is dropped from November 2001 |
| *** | applicable from November 2001 |
| 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 | Glow plugs, coolant |
| T2n | 2-pin connector, cable channel, in left engine compartment |
| 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 (glow plugs, coolant) in diesel direct injection system wiring harness |
| * | for models with heated pin heating only (manual gearbox) |
| G70 | Air mass meter |
| J248 | Diesel direct injection system control unit |
| N18 | Exhaust gas recirculation valve |
| N75 | Charge pressure control solenoid valve |
| N213 | Exhaust gas recirculation valve 2 |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10 | 10-pin connector, white, in plenum chamber |
| T10c | 10-pin connector, black, in left engine compartment |
| V157 | Intake manifold flap motor |
| 156 | Earth connection, in diesel direct injection wiring harness |
| A15 | Positive connection (15), in instrument panel wiring harness |
| A100 | Connection 2 (87), in dash panel wiring harness |
| D101 | Connection 1, in engine compartment wiring harness |
| * | for models with engine code ASZ only |
| ** | for models with heater elements only |
| *** | for models without heater elements only |
| E87 | operating and display unit for air conditioning system/Climatronic |
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G40 | Hall sender |
| G62 | Coolant temperature sender |
| G71 | Intake manifold pressure sender |
| G72 | Intake manifold temperature sender |
| G81 | Fuel temperature sender |
| J248 | Diesel direct injection system control unit |
| T3n | 3-pin connector, grey, speed sender, in engine compartment |
| T10x | 10-pin connector, orange, in plenum chamber |
| T14 | 14-pin connector, in left engine compartment |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| A100 | Connection 2 (87), in dash panel wiring harness |
| F27 | Connection (screening), in diesel direct injection wiring harness |
| * | for models with air conditioning system only |
| ** | is dropped from November 2001 |
| *** | applicable from November 2001 |
| F8 | Kick-down switch |
| F60 | Idling speed switch |
| G79 | Accelerator position sender |
| J17 | Fuel pump relay |
| J234 | Airbag control unit |
| J248 | Diesel direct injection system control unit |
| N240 | Unit injector valve, No. 1 cyl. |
| N241 | Unit injector valve, No. 2 cyl. |
| N242 | Unit injector valve, No. 3 cyl. |
| N243 | Unit injector valve, No. 4 cyl. |
| T8h | 8-pin connector, 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 |
| B147 | Positive connection 2 (87), in interior 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 for crankcase breather |
| T6m | 6-pin connector, brown, in plenum chamber |
| T10 | 10-pin connector, white, in plenum chamber |
| T10c | 10-pin connector, black, in left engine compartment |
| 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 |
| * | for models with CCS only |
| ** | for manual gearbox only |
| *** | for models with heater elements only |
| F18 | Thermal switch for radiator fan |
| F54 | Thermal switch for radiator fan |
| J217 | Automatic gearbox control unit |
| J248 | Diesel direct injection system control unit |
| J397 | Radiator fan run-on relay |
| 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 |
| A45 | Connection (RPM signal), in dash panel wiring harness |
| A68 | Connection (30, air conditioning system), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| L26 | Connection (radiator fan), in engine compartment - Climatronic wiring harness |
| ● | CAN bus (data bus) |
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G6 | Fuel pump (pre-supply pump) |
| J218 | Combi-processor in dash panel insert |
| J533 | Data bus diagnostic interface |
| T14 | 14-pin connector, in left engine compartment |
| T16 | 16-pin connector, black, shelf centre console (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 |
| A80 | Connection 1 (X), in dash panel wiring harness |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| G266 | Oil level and oil temperature sender |
| J218 | Combi-processor in dash panel insert |
| K2 | Alternator warning lamp |
| K29 | Glow period warning lamp |
| T14 | 14-pin connector, in left engine compartment |
| 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 |
| B149 | Positive connection 2 (15a), in interior wiring harness |
| B178 | Connection (speed signal), in interior wiring harness |
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