| Number | X-pin, colour | Description |
|---|---|---|
| X2411 | 9-pin, black | Plug connector Digital diesel electronics control unit Module 1 |
| X2413 | 52-pin, black | Plug connector Digital diesel electronics control unit Module 3 |
| X2414 | 40-pin, black | Plug connector Digital diesel electronics control unit Module 4 |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Voltage supply terminal 15/30 | Fuse carrier, engine electronics |
| 2 | Not used | ||
| 3 | Not used | ||
| 4 | M | Ground | Ground connector |
| 5 | M | Ground | Ground connector |
| 6 | M | Ground | Ground connector |
| 7 | Not used | ||
| 8 | E | Voltage supply terminal 15/30 | Fuse carrier, engine electronics |
| 9 | E | Activation of DDE main relay (HRL) | DDE relay |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E | Signal, hot-film air mass meter | Hot-film air mass meter |
| 3 | M | Ground, hot-film air mass meter | Hot-film air mass meter |
| 4 | Not used | ||
| 5 | E | Signal SD nozzle | SD nozzle |
| 6 | E | Signal Speed (rpm) sensor | Speed (rpm) sensor |
| 7 | E | Signal Injection pump | Injection pump |
| 8 | Not used | ||
| 9 | E | Signal Solenoid valve, supercharger control | Solenoid valve, supercharger control |
| 10 | E | Signal Changeover valve for exhaust gas recirculation (AGR) | Changeover valve for exhaust gas recirculation (AGR) |
| 11 | Not used | ||
| 12 | E | Signal Preheater relay | Preheater relay |
| 13 | A | Electrical changeover valve for engine mount activation | Electrical changeover valve, engine mount |
| 14 | A | Supply for boost pressure sensor | Boost pressure sensor |
| 15 | E | Signal Boost pressure sensor | Boost pressure sensor |
| 16 | M | Ground Boost pressure sensor | Boost pressure sensor |
| 17 | Not used | ||
| 18 | M | Ground SD nozzle | SD nozzle |
| 19 | Not used | ||
| 20 | Not used | ||
| 21 | E | Switch-off signal | Injection pump |
| 22 | Not used | ||
| 23 | Not used | ||
| 24 | Not used | ||
| 25 | Not used | ||
| 26 | Not used | ||
| 27 | Not used | ||
| 28 | E | Signal Dual temperature sensor | Dual temperature sensor |
| 29 | Not used | ||
| 30 | Not used | ||
| 31 | M | Ground Speed (rpm) sensor | Speed (rpm) sensor |
| 32 | M | Ground | Connector, sensor ground X2052 |
| 33 | E | Supply Hot-film air mass meter | Hot-film air mass meter |
| 34 | Not used | ||
| 35 | Not used | ||
| 36 | Not used | ||
| 37 | Not used | ||
| 38 | Not used | ||
| 39 | Not used | ||
| 40 | E | Signal Oil level sensor | Oil level sensor |
| 41 | E | Signal Oil pressure switch | Oil pressure switch |
| 42 | Not used | ||
| 43 | Not used | ||
| 44 | E/A | CAN-bus low | Injection pump |
| 45 | E/A | CAN-bus high | Injection pump |
| 46 | Not used | ||
| 47 | Not used | ||
| 48 | Not used | ||
| 49 | Not used | ||
| 50 | E | Battery charge indicator lamp signal (terminal 61) | Alternator |
| 51 | E | Start signal | Starter |
| 52 | E | Signal Preheater relay | Preheater relay |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Battery charge indicator lamp signal (terminal 61) | Instrument cluster |
| 2 | A | Start signal | Instrument cluster Integrated electronic control unit (IKE) |
| 3 | Not used | ||
| 4 | E | Signal Electric fan | Electric fan |
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | M | Ground Pedal position sensor | Pedal position sensor |
| 8 | E | Signal Pedal position sensor | Pedal position sensor |
| 9 | A | Supply Pedal position sensor | Pedal position sensor |
| 10 | E | Signal Fuel pump relay 1 | Fuel pump relay 1 |
| 11 | A | Signal Oil pressure switch | Instrument cluster |
| 12 | M | Ground Pedal position sensor | Pedal position sensor |
| 13 | Not used | ||
| 14 | Not used | ||
| 15 | Not used | ||
| 16 | A | Signal Pedal position sensor | Pedal position sensor |
| 17 | A | Engine speed signal output (TD) | Diagnostic connector |
| 18 | Not used | ||
| 19 | E | Reversing light signal | Instrument cluster Integrated electronic control unit (IKE) |
| 20 | Not used | ||
| 21 | A | Signal Oil level sensor | Light module |
| 22 | E | Signal Rear right wheel speed sensor | ABS/ASC control unit |
| 23 | E | Signal Clutch switch | Clutch switch |
| 24 | E | Brake light switch signal | Brake light switch |
| 25 | Not used | ||
| 26 | A | Voltage supply, terminal 15 | Fuse F14 |
| 27 | E | Data link MFL | Coil spring |
| 28 | E | Brake light test signal | Brake light switch |
| 29 | E | A/C compressor signal | Heating and A/C control module |
| 30 | Not used | ||
| 31 | Not used | ||
| 32 | E/A | Communication link TXD | Diagnostic connector |
| 33 | E | Signal, electronic immobilizer EWS (S-DWA) | Electronic immobilizer control unit (EWS) |
| 34 | Not used | ||
| 35 | Not used | ||
| 36 | E/A | CAN interface CAN-HIGH (CAN-H) | CAN link |
| 37 | E/A | CAN interface CAN-LOW (CAN-L) | CAN link |
| 38 | Not used | ||
| 39 | Not used | ||
| 40 | Not used | ||