Engine control unit, Boost pressure limiting solenoid valve, Heating resistor of the engine crankcase ventilation system, Electromagnetic valve of the left electrohydraulic engine support, Air filter bypass valve, Switching valve of the radiator of the exhaust gas recirculation system, Coolant circulation pump
- J623 - Engine control unit
- N75 - Boost pressure limitation solenoid valve
- N79 - Crankcase ventilation heating resistor
- N144 - Solenoid valve for left electrohydraulic engine mount
- N₂75 - Air filter bypass valve
- N345 - EGR cooler changeover valve
- ST1 - Fuse Box 1
- SB5 - Fuse 5 in fuse box B
- T5l - Connector, 5-pin, in the engine compartment
- T60 - Connector, 60-pin
- T94 - Connector, 94-pin
- V50 - Coolant circulation pump
- 85 - Ground connection 1 in engine compartment wiring harness
- D110 - Connection 8 in the engine compartment wiring harness
- * - only for vehicles with a heating resistor for the engine crankcase ventilation system
- *2 - see the current electrical diagram for the air conditioning system
- *3 - see current electrical diagram for radiator fans
| ws | white | sw | black |
| ro | red | rt | red |
| br | brown | gn | green |
| bl | blue | gr | grey |
| li | purple | vi | purple |
| ge | yellow | or | orange |
| rs | pink |