Engine control unit, Recovery pump
- G686 - Pressure sensor in the reducing agent dosing system
- J623 - Engine control unit
- ST2 - Fuse Box 2
- SC4 - Fuse 4 in fuse box C
- T8am - Connector, 8-pin, black
- T8d - Connector, 8-pin
- T8e - Connector, 8-pin, black
- T14k - Connector, 14-pin, brown
- T17t - Connector, 17-pin, brown
- T94 - Connector, 94-pin
- V437 - Reductant pump
- Z103 - Heating element of the reducing agent pump (heating circuit 2)
- 209 - Ground connection 6 in wiring harness, engine compartment
- 371 - Ground connection 6 in main wiring harness
- H3 - Connection 1 in the wiring harness of the reducing agent tank
- H4 - Connection 2 in the wiring harness of the reducing agent tank
- * - only for vehicles with SCR system
- *2 - see current fuse box diagram
- *3 - Adapter cable
| 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 |