Functional networking
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The following system overview shows the functional networking from an electrical view.
Example F30 with N47D20O1
| Item | Explanation |
|---|---|
| 1 | Digital diesel electronics (DDE) |
| 2 | SCR metering module |
| 3 | Front power distribution box, passenger's side |
| 4 | Front electronic module |
| 5 | Pressure line heating element |
| 6 | Pump block with pre-supply pump and return pump |
| 7 | Fill level sensor and heating element (active tank) |
| 8 | Selective catalytic reduction (SCR control unit) |
| 9 | Power distribution box, rear |
| 10 | Fill level sensor (passive tank) |
| 11 | Transfer pump |
| 12 | Instrument panel (KOMBI) |
| 13 | Temperature sensor, SCR catalytic converter |
| 14 | Nitrogen oxide sensor before SCR catalytic converter |
| 15 | Diesel particulate sensor (optional) |
| 16 | Nitrogen oxide sensor after SCR catalytic converter |