| A | Battery |
| F | Brake light switch |
| G28 | Engine speed sender |
| G70 | Air mass meter, in engine compartment, front right |
| G72 | Intake manifold temperature sender |
| J248 | Diesel direct injection system control unit, in centre plenum chamber |
| J362 | Immobilizer control unit |
| M9 | Left brake light bulb |
| T1y | Single connector, behind the relay plate |
| T10 | 10-pin connector, behind the relay plate |
| T68 | 68-pin connector |
| TV11 | Terminal 54 wiring junction, above the relay plate |
| 156 | Earth connection, in diesel direct injection wiring harness |
| 220 | Earth connection (sender earth), in engine wiring harness |
| * | only automatic gearbox |
| E45 | Cruise control system switch |
| F4 | Reversing light switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch/diesel direct injection system |
| G80 | Needle lift sender |
| G81 | Fuel temperature sender |
| G149 | Modulating piston movement sender |
| J248 | Diesel direct injection system control unit, in centre plenum chamber |
| N146 | Metering adjuster |
| T4a | 4-pin connector, behind steering column switch trim |
| T4b | 4-pin connector, next to steering column |
| T8 | 8-pin connector |
| T10 | 10-pin connector, behind the relay plate |
| T24 | 24-pin connector, on engine |
| T68 | 68-pin connector |
| TV5 | Terminal 15a wiring junction |
| 220 | Earth connection (sender earth), in engine wiring harness |
| * | only models with cruise control system |
| ** | only automatic gearbox |
| A | Battery |
| G79 | Accelerator position sender |
| J248 | Diesel direct injection system control unit, in centre plenum chamber |
| J317 | Terminal 30 voltage supply relay |
| J325 | Coolant heater element relay, on centre bulkhead |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| N18 | Exhaust gas recirculation valve, in engine compartment, front right |
| Q7 | Glow plugs, coolant |
| S109 | Glow plug fuse - (coolant) |
| T6 | 6-pin connector, in front left footwell |
| T24 | 24-pin connector, on engine |
| T68 | 68-pin connector, on control unit |
| TV13 | Speed signal wiring junction |
| F25 | Connection 1, in diesel direct injection system wiring harness |
| F32 | Connection (glow plugs, coolant) in diesel direct injection system wiring harness |
| F38 | Ambient temperature switch |
| J52 | Glow plug relay |
| J246 | Cut-out relay for air conditioning system magnetic coupling |
| J248 | Diesel direct injection system control unit, in centre plenum chamber |
| J255 | Climatronic control unit |
| N75 | Charge pressure control solenoid valve |
| N108 | Commencement of injection valve |
| N109 | Fuel shut-off valve |
| Q6 | Glow plugs - engine |
| S39 | Glow plug fuse, above the relay plate |
| T3 | 3-pin connector, in centre engine compartment |
| T12a | 12-pin connector, behind the relay plate |
| T24 | 24-pin connector, on engine |
| T68 | 68-pin connector, on engine |
| TV2 | Terminal 30 wiring junction, above the relay plate |
| F26 | Connection 2, in diesel direct injection system wiring harness |
| F31 | Connection (engine glow plugs), in diesel direct injection system wiring harness |
| * | only models with air conditioning system |
| ** | only models with Climatronic |
| E86 | Multifunction display call-up button |
| E109 | Multifunction display memory switch |
| F1 | Oil pressure switch |
| F22 | Oil pressure switch (0.3 bar) |
| G | Fuel gauge sender |
| G2 | Coolant temperature display sender |
| G22 | Speedometer sender |
| G62 | Coolant temperature sender |
| T4c | 4-pin connector, behind steering column switch trim |
| T24 | 24-pin connector, on engine |
| 18 | Earth point, on engine block |
| 196 | Earth connection 1, in rear wiring harness |
| 201 | Earth connection 5, in engine wiring harness |
| E20 | Illumination regulators - switches and instruments |
| J285 | Control unit with display in dash panel insert |
| K1 | Main beam warning lamp |
| K2 | Alternator warning lamp |
| K29 | Glow period warning lamp |
| K65 | Left turn signal warning lamp |
| K94 | Right turn signal warning lamp |
| L10 | Dash panel insert illumination bulb |
| L39 | Heated rear window switch illumination bulb |
| M5 | Front left turn signal bulb |
| M7 | Front right turn signal bulb |
| T3b | 3-pin connector, behind the relay plate |
| T28 | 28-pin connector |
| TV4 | Terminal 15 wiring junction |
| Y | Analogue clock |
| A11 | Positive connection (58b), in dash panel wiring harness |
| E4 | Headlight dipper/flasher switch |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| G32 | Coolant temperature display sender |
| J285 | Control unit with display in dash panel insert |
| K3 | Oil pressure warning lamp |
| K7 | Dual circuit brake/handbrake warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| L1 | Left twin filament bulb |
| L2 | Right twin filament bulb |
| T28 | 28-pin connector, on dash panel insert |
| TV13 | Speed signal wiring junction, above the relay plate |
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