| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | X contact relief relay |
| S162 | Fuse -1- (30), in fuse box/battery |
| S163 | Fuse -2- (30), in fuse box/battery |
| S176 | Fuse -4- (30), in battery fuse box |
| S177 | Fuse -5- (30), in fuse box/battery |
| T4g | 4-pin connector, in engine compartment, near alternator |
| T6 | 6-pin connector, brown, connector point, electronics box, in plenum chamber, left |
| 500 | Screw connection -1- (30), on relay plate |
| 501 | Screw connection -2- (30), on relay plate |
| 502 | Screw connection -1- (30a), on relay plate |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A40 | Positive (+) connection -1- (30), in dash panel wiring harness |
| D | Ignition/starter switch |
| F8 | Kick-down switch |
| F60 | Idling switch |
| G79 | Accelerator pedal position sender |
| J52 | Glow plug relay |
| J248 | Diesel direct injection system control unit |
| Q6 | Glow plugs (engine) |
| S229 | Fuse in fuse box |
| T2e | 2-pin connector, in engine compartment |
| T6 | 6-pin connector, brown, connector point, electronics box, in plenum chamber, left |
| T6p | 6-pin connector, in engine compartment |
| T10h | 10-pin connector, blue, connector point, electronics box, in plenum chamber, left |
| T14 | 14-pin connector, in engine compartment |
| T121 | 121-pin connector |
| 504 | Screw connection -1- (87), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A104 | Positive (+) connection -2- (15), in dash panel wiring harness |
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G62 | Coolant temperature sender |
| G70 | Air mass meter |
| G71 | Intake manifold pressure sender |
| G72 | Intake manifold temperature sender |
| J217 | Automatic gearbox control unit |
| J248 | Diesel direct injection system control unit |
| T3a | 3-pin connector, on engine front |
| T10 | 10-pin connector, orange, connector point, electronics box, in plenum chamber, left |
| T10d | 10-pin connector, white, connector point, electronics box, in plenum chamber, left |
| T10h | 10-pin connector, blue, connector point, electronics box, in plenum chamber, left |
| T14 | 14-pin connector, in engine compartment |
| T68 | 68-pin connector, on automatic gearbox control unit control unit |
| T121 | 121-pin connector |
| 200 | Earth connection (sender earth), in engine wiring harness |
| * | Connection relay for air conditioner |
| ** | Connection for air conditioner |
| Only models with automatic gearbox |
| G80 | Needle lift sender |
| G81 | Fuel temperature sender |
| G149 | Modulating piston movement sender |
| J104 | ABS with EDL control unit |
| J217 | Automatic gearbox control unit |
| J248 | Diesel direct injection system control unit |
| N146 | Metering adjuster |
| T2a | 2-pin connector, on engine front |
| T10d | 10-pin connector, white, connector point, electronics box, in plenum chamber, left |
| T10f | 10-pin connector, on engine front |
| T68 | 68-pin connector, on automatic gearbox control unit control unit |
| T121 | 121-pin connector |
| 200 | Earth connection (sender earth), in engine wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| * | Only models with automatic gearbox |
| J248 | Diesel direct injection system control unit |
| J317 | Terminal 30 voltage supply relay |
| N18 | Exhaust gas recirculation valve |
| N75 | Charge pressure control solenoid valve |
| N108 | Commencement of injection valve |
| N109 | Fuel shut-off valve |
| N239 | Intake manifold flap change-over valve |
| S234 | Fuse in fuse box |
| T6 | 6-pin connector, brown, connector point, electronics box, in plenum chamber, left |
| T10 | 10-pin connector, orange, connector point, electronics box, in plenum chamber, left |
| T10f | 10-pin connector, on engine front |
| T10h | 10-pin connector, blue, connector point, electronics box, in plenum chamber, left |
| T14 | 14-pin connector, in engine compartment |
| T121 | 121-pin connector |
| B147 | Positive (+) connection -2- (87), in interior wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| D | Ignition/starter switch |
| E45 | Cruise control system switch |
| E227 | Cruise control system (CCS) button (Set) |
| J248 | Diesel direct injection system control unit |
| S10 | Fuse in fuse box/relay plate |
| T10e | 10-pin connector, black, connector point, electronics box, in plenum chamber, left |
| T10s | 10-pin connector, next to steering column |
| T14 | 14-pin connector, in engine compartment |
| T121 | 121-pin connector |
| A34 | Connection (75x), in dash panel wiring harness |
| * | Only models with cruise control system |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch (diesel direct injection system) |
| J248 | Diesel direct injection system control unit |
| M9 | Brake light bulb, left |
| M10 | Brake light bulb, right |
| M25 | High level brake light bulb |
| S13 | Fuse in fuse box/relay plate |
| T10d | 10-pin connector, white, connector point, electronics box, in plenum chamber, left |
| T10e | 10-pin connector, black, connector point, electronics box, in plenum chamber, left |
| T121 | 121-pin connector |
| A18 | Connection (54), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| * | Only models without CCS |
| ** | Only models with cruise control system |
| Only models with manual gearbox |
| J248 | Diesel direct injection system control unit |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| N79 | Heater element (crankcase breather) |
| Q7 | Coolant heating elements |
| T6 | 6-pin connector, brown, connector point, electronics box, in plenum chamber, left |
| T10 | 10-pin connector, orange, connector point, electronics box, in plenum chamber, left |
| T121 | 121-pin connector |
| 156 | Earth connection, in diesel direct injection wiring harness |
| 608 | Earth point, in plenum chamber, centre |
| A27 | Connection (speed signal), in dash panel wiring harness |
| D50 | Positive (+) connection (30), in engine compartment wiring harness |
| D74 | Connection (86), in engine compartment wiring harness |
| D98 | Connection (glow plugs), in engine compartment wiring harness |
| L32 | Connection -1-, in heater unit wiring harness |
| * | Only models with manual gearbox and heater for radiator |
| ** | Only models with heater element (crankcase breather) |
| G | Fuel gauge sender |
| G32 | Coolant shortage indicator sender |
| S5 | Fuse in fuse box/relay plate |
| S7 | Fuse in fuse box/relay plate |
| S232 | Fuse in fuse box |
| S243 | Fuse in fuse box |
| T6 | 6-pin connector, brown, connector point, electronics box, in plenum chamber, left |
| T14 | 14-pin connector, in engine compartment |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| A101 | Connection -3- (87), in dash panel wiring harness |
| A151 | Connection -4- (87), in dash panel wiring harness |
| F1 | Oil pressure switch |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| K29 | Glow period warning lamp |
| T14 | 14-pin connector, in engine compartment |
| T32 | 32-pin connector, blue, on dash panel insert |
| 608 | Earth point, in plenum chamber, centre |
| A38 | Positive (+) connection -2- (15a), in dash panel wiring harness |
| * | Output for signal earth |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G21 | Speedometer |
| G266 | Oil level/oil temperature sender |
| J285 | Control unit with display in dash panel insert |
| J533 | Data bus diagnostic interface |
| K38 | Oil level warning lamp |
| K105 | Reserve fuel warning lamp |
| T14 | 14-pin connector, in engine compartment |
| T16 | 16-pin connector, diagnostic connector |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 608 | Earth point, in plenum chamber, centre |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
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