| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| F18 | Radiator fan thermo-switch |
| SA1 | Fuse -1- (30), on battery fuse holder |
| SA2 | Fuse -2- (30), on battery fuse holder |
| SA3 | Fuse -3- (30), on battery fuse holder |
| SA4 | Fuse -4- (30), on battery fuse holder |
| SA7 | Fuse -7- (30), on battery fuse holder |
| T2b | 2-pin connector, black, near compressor |
| T3b | 3-pin connector, black, on radiator fan |
| T4g | 4-pin connector, black, on battery fuse holder |
| T10a | 10-pin connector, green, coupling station under relay carrier¹) |
| V7 | Radiator fan |
| 1 | Earth strap, battery body |
| 10 | Earth point, in plenum chamber |
| 167 | Earth connection -4-, in engine compartment wiring harness |
| 500 | Screw connection -1- (30), on relay plate¹) |
| 502 | Screw connection -3- (30), on relay plate¹) |
| * | With coolant heater elements only |
| G28 | Engine speed sender |
| G42 | Intake air temperature sender |
| J248 | Diesel direct injection system control unit, right in plenum chamber |
| J362 | Immobilizer control unit |
| T3a | 3-pin connector, black, left on cylinder head |
| T8b | 8-pin connector, black, on immobilizer control unit |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T121 | 121-pin connector, on diesel direct injection system control unit |
| 10 | Earth point, in plenum chamber |
| F27 | Connection (screening), in diesel direct injection wiring harness |
| * | With coolant heater elements only |
| ** | Not with coolant heater elements |
| D | Ignition/starter switch |
| G80 | Needle lift sender |
| J234 | Airbag control unit |
| J248 | Diesel direct injection system control unit, right in plenum chamber |
| J491 | Control unit for fuel shut-off (crash) |
| N18 | Exhaust gas recirculation valve |
| SB32 | Fuse -32- on fuse holder |
| T2a | 2-pin connector, brown, left on cylinder head, near fuel injection pump |
| T10c | 10-pin connector, blue, coupling station under relay carrier |
| T121 | 121-pin connector, on diesel direct injection system control unit |
| 76 | Earth point, near selector mechanism |
| A125 | Connection (crash signal), in dash panel wiring harness |
| B102 | Earth connection, in front left interior wiring harness |
| B135 | Connection -1- (15a), in interior wiring harness |
| B235 | Positive connection -4- (15a), in wiring harness |
| F27 | Connection (screening), in diesel direct injection wiring harness |
| * | With Airbag only |
| F36 | Clutch pedal switch |
| 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, in plenum chamber, right |
| N146 | Metering adjuster |
| SB37 | Fuse -37- in fuse box |
| T10a | 10-pin connector, green, connector point under relay carrier |
| T10d | 10-pin connector, red, connector point under relay carrier |
| T10h | 10-pin connector, black, on cylinder head, left |
| T10s | 10-pin connector, grey, connector point under relay carrier |
| T121 | 121-pin connector, on diesel direct injection system control unit |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| F25 | Connection -1-, in diesel direct injection system wiring harness |
| F28 | Connection -3-, in diesel direct injection system wiring harness |
| G79 | Accelerator pedal position sender |
| J248 | Diesel direct injection system control unit, in plenum chamber, right |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| Q7 | Coolant heating elements |
| T6 | 6-pin connector, black, in footwell, front left |
| T10c | 10-pin connector, blue, connector point under relay carrier |
| T24 | 24-pin connector, black, on cylinder head, left |
| T121 | 121-pin connector, on diesel direct injection system control unit |
| D50 | Positive (+) connection (30), in engine compartment wiring harness |
| D98 | Connection (glow plugs), in engine compartment wiring harness |
| * | Only coolant heater element |
| G2 | Coolant temperature sender |
| G27 | Engine temperature sender |
| J248 | Diesel direct injection system control unit, right in plenum chamber |
| J317 | Terminal 30 voltage supply relay |
| N108 | Commencement of injection valve |
| N109 | Fuel shut-off valve |
| N211 | Throttle butterfly valve |
| SB23 | Fuse -23- in relay plate fuse holder |
| SB24 | Fuse -24- in relay plate fuse holder |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10h | 10-pin connector, black, near fuel injection pump |
| T24 | 24-pin connector, black, left on cylinder head |
| T121 | 121-pin connector, on diesel direct injection system control unit |
| D73 | Positive connection (54), in engine compartment wiring harness |
| F26 | Connection -2-, in diesel direct injection system wiring harness |
| * | Not with ABS |
| ** | With ABS only |
| *** | With coolant heater elements only |
| F | Brake light switch |
| F1 | Oil pressure switch |
| F47 | Cruise cont. sys. brake pedal switch (diesel direct inj. system) |
| G22 | Speedometer sender (Hall sender on gearbox) |
| J52 | Glow plug relay |
| J362 | Immobilizer control unit |
| Q6 | Glow plugs - (engine) |
| SB15 | Fuse -15- in relay plate fuse holder |
| T10 | 10-pin connector, white, coupling station under relay carrier |
| T10a | 10-pin connector, green, coupling station under relay carrier |
| T10b | 10-pin connector, black, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T24 | 24-pin connector, black, left on cylinder head |
| 15 | Earth point, on cylinder head |
| B111 | Positive connection -1- (30a), in interior wiring harness |
| B149 | Positive connection -2- (15a), in interior wiring harness |
| B150 | Positive connection -2- (30a), in interior wiring harness |
| F31 | Connection (glow plugs - engine), in diesel direct injection system wiring harness |
| * | Not with ABS |
| ** | With ABS only |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G32 | Coolant shortage indicator sender |
| 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 |
| T10b | 10-pin connector, black, coupling station under relay carrier |
| T10d | 10-pin connector, red, coupling station under relay carrier |
| T24 | 24-pin connector, black, left on cylinder head |
| T32 | 32-pin connector, on dash panel insert |
| Y4 | Odometer display |
| 12 | Earth point, in engine compartment, left |
| 120 | Earth connection -2-, in engine compartment wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| J285 | Control unit with display in dash panel insert |
| J533 | Diagnosis interface for data bus |
| T16 | 16-pin connector, near handbrake lever, self-diagnosis connection |
| T32 | 32-pin connector, green, on dash panel insert |
| T32a | 32-pin connector, blue, on dash panel insert |
| 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 |
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