| A | Battery (00532) |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | X contact relief relay |
| SA1 | Fuse -1- in battery fuse box |
| SA2 | Fuse -2- in battery fuse box |
| SA4 | Fuse -4- in battery fuse box |
| SA5 | Fuse -5- in battery fuse box |
| SA6 | Fuse -6- in battery fuse box |
| SB20 | Fuse -20- in fuse box |
| T5f | 5-pin connector, black, in engine compartment |
| TV2 | Terminal 30 junction box |
| T10d | 10-pin connector, black, in coupling station |
| T10i | 10-pin connector, red, in coupling station |
| 1 | Earth strap, battery - body |
| 2 | Earth strap, gearbox - body |
| 80 | Earth connection -1-, in instruments wiring harness |
| 500 | Bolted connection -1- (30), on relay plate |
| 501 | Bolted connection -2- (30), on relay plate |
| 502 | Bolted connection -1- (30a), on relay plate |
| A32 | Positive connection (30), in dash panel wiring harness |
| A61 | Positive connection (X), in dash panel wiring harness |
| A80 | Connection -1- (X), in dash panel wiring harness |
| * | On vehicles with additional heating SA5 (150 A) |
| E45 | GRA switch |
| F8 | Kick-down switch |
| F60 | Idling switch |
| G79 | Accelerator pedal position sender |
| J52 | Incandescent spark plugs relay |
| J248 | Direct diesel injection control unit |
| J317 | Relay to supply voltage to terminal 30 |
| Q6 | Glow plugs (engine) |
| SB3 | Fuse -3- in the fusebox |
| SB8 | Fuse -8- in the fusebox |
| T2j | 2-way connector |
| T6e | 6-way connector, black |
| T10g | 10 way connector, green, in the couplings distributor |
| T10h | 10 way connector, purple, in the couplings distributor |
| T80 | 80-way connector, black |
| 167 | Earth connection -4-, engine bay wiring harness |
| A99 | Connection -1- (87), in the dash panel insert wiring harness |
| B163 | Positive connection -1- (15), interior wiring harness |
| D112 | Connection -10-, engine bay wiring harness |
| D108 | Connection -16-, engine bay wiring harness |
| F31 | Connection (preheating elements, engine), direct diesel injection wiring harness |
| * | Only vehicles with GRA |
| G28 | Engine revolution sender |
| G65 | High pressure sender |
| G71 | Inlet manifold pressure sender |
| G80 | Needle movement sender |
| J248 | Direct diesel injection control unit |
| J293 | Radiator fan control unit |
| T2c | 2-way connector |
| T3b | 3-way connector |
| T10d | 10 way connector, black, in the couplings distributor |
| T10f | 10 way connector, brown, in the couplings distributor |
| T10h | 10 way connector, purple, in the couplings distributor |
| T80 | 80-way connector, black |
| 80 | Earth connection -1-, in the dash panel wiring harness |
| 167 | Earth connection -4-, engine bay wiring harness |
| A27 | Connection (speed signal), instrument panel wiring harness |
| L5 | Connection -1-, air conditioning wiring harness |
| * | Only vehicles with air conditioning |
| ** | Only vehicles without additional heating |
| G2 | Coolant temperature sender (01039) |
| G62 | Coolant temperature sender (00522-2312) |
| G81 | Fuel temperature sender (00539-2311) |
| G149 | Modulating piston movement sender (00765-1412) |
| J248 | Diesel direct injection system control unit |
| N146 | Metering adjuster (01268-4113) |
| T10e | 10-pin connector, white, on coupling station |
| T10g | 10-pin connector, green, on coupling station |
| T10h | 10-pin connector, violet, on coupling station |
| T10i | 10-pin connector, red, on coupling station |
| T10y | 10-pin connector |
| T80 | 80-pin connector, black |
| 110 | Earth connection -2-, in wiring harness for instruments |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| * | Self-diagnosis Line W |
| J104 | ABS with EDL control unit |
| J248 | Diesel direct injection system control unit |
| N18 | Exhaust gas recirculation valve (01265-4312) |
| N108 | Commencement of injection valve (01269-4114) |
| N239 | Intake manifold flap change-over valve (01282) |
| T5q | 5-pin connector |
| T10f | 10-pin connector, brown, on coupling station |
| T10g | 10-pin connector, green, on coupling station |
| T10y | 10-pin connector |
| T25 | 25-pin connector, black, in engine compartment, left |
| T80 | 80-pin connector, black |
| 10 | Earth point, in plenum chamber |
| D114 | Connection -12-, in engine compartment wiring harness |
| * | Vehicles with ABS, ABS and EDL or TCS only |
| F | Brake light switch (00526-2131) |
| F36 | Clutch pedal switch (00650) |
| F47 | Brake pedal switch for CC/diesel direct injection system (00629) |
| J... | Motor control units |
| J234 | Control unit for Airbag (01321) |
| J248 | Control unit for Diesel direct injection system |
| J491 | Control unit for fuel shut-off (Crash) |
| M21 | Bulb for brake and rear light left |
| M22 | Bulb for brake and rear light right |
| M25 | Bulb for high mounted brake light |
| N109 | Fuel cut off valve (01237-4321) |
| SB1 | Fuse -1- on fuse holder |
| SB4 | Fuse -4- on fuse holder |
| T3 | 3 pin connector, black, in the brake |
| T9a | 9 pin connector, black, on the relay holder bracket |
| T10g | 10 pin connector, green, in the coupling distributor |
| T10h | 10 pin connector, purple, in the coupling distributor |
| T10i | 10 pin connector, red, in the coupling distributor |
| T10y | 10 pin connector |
| T50 | 50 pin connector, yellow |
| T80 | 80 pin connector, black |
| 109 | Earth connection, in airbag wiring loom |
| A15 | Positive connection (15), in instrument wiring loom |
| A98 | Positive connection -4- (30), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| D73 | Positive connection (54), in engine compartment wiring loom |
| E30 | Connection (87a), in engine wiring loom |
| * | Only vehicles without airbag |
| ** | Only vehicles with airbag |
| F1 | Oil pressure switch |
| F18 | Radiator fan thermo switch |
| G | Fuel gauge sender |
| G22 | Speedometer sender (01086) |
| T3d | 3 pin connector, black, on the radiator |
| T10f | 10 pin connector, brown, in the coupling distributor |
| T10g | 10 pin connector, green, in the coupling distributor |
| T10l | 10 pin connector, orange, in the coupling distributor |
| V7 | Radiator fan (01018-3433) |
| 10 | Earth point, in plenum chamber |
| 12 | Earth point, in engine compartment, left |
| 110 | Earth connection -2-, in wiring loom for instruments |
| G1 | Fuel gauge (00664) |
| G3 | Coolant temperature gauge |
| G21 | Speedometer (00663) |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert (01317) |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp (00755) |
| K28 | Coolant temperature/coolant shortage warning lamp |
| K29 | Glow period warning lamp (00626) |
| K105 | Reserve fuel warning lamp (01082) |
| SB9 | Fuse -9- on fuse holder |
| T32 | 32-pin connector, blue, in dash panel insert |
| T32a | 32-pin connector, green, in dash panel insert |
| A21 | Connection (86s), in dash panel wiring harness |
| * | Self-diagnosis Line W |
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