A2249 Digital diesel electronics control unit

Connector location views

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 assignments at plug connector X2411

Pin	Type	Description / Signal type	Connection / Measuring notes
1	E	Voltage supply	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	Fuse carrier, engine electronics

9	E	Activation, main relay	DDE relay

Pin assignments at plug connector X2413

Pin	Type	Description / Signal type	Connection / Measuring notes
1		Not used

2	E	Signal Air mass sensor	Air mass sensor

3	M	Ground Air mass sensor	Air mass sensor

4		Not used

5	E	Signal Needle movement sensor	Needle movement sensor

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 Solenoid valve, exhaust gas recirculation	Solenoid valve, exhaust gas recirculation

11		Not used

12	E	Signal Preheater relay	Preheater relay

13	E	Activation Solenoid valve, radiator shutter	Solenoid valve, radiator shutter

14	A	Supply Boost pressure sensor	Boost pressure sensor

15	E	Activation Boost pressure sensor	Boost pressure sensor

16	M	Ground Boost pressure sensor	Boost pressure sensor

17		Not used

18	M	Ground Needle movement sensor	Needle movement sensor

19		Not used

20		Not used

21	E	Solenoid valve cutout signal	Injection pump

22		Not used

23		Not used

24	E	Alternator load signal	Alternator

25		Not used

26		Not used

27		Not used

28	A	Activation Coolant temperature sensor	Coolant temperature sensor

29		Not used

30		Not used

31	M	Ground Speed (rpm) sensor	Speed (rpm) sensor

32	M	Ground Coolant temperature sensor	Coolant temperature sensor

33	A	Supply Air mass sensor	Air mass sensor

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	Signal CAN bus low	Injection pump

45	E/A	Signal CAN bus high	Injection pump

46		Not used

47		Not used

48		Not used

49		Not used

50	E	Signal Battery charge indicator lamp	Alternator

51	E	Engine start signal feedback	Starter

52	E	Signal Preheater relay	Preheater relay

Pin assignments at plug connector X2414

Pin	Type	Description / Signal type	Connection / Measuring notes
1	E	Signal Battery charge indicator lamp	Instrument cluster control unit

2	E	Engine start signal feedback	Instrument cluster control unit

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	A	Signal Pedal position sensor	Pedal position sensor

9	A	Signal Pedal position sensor	Pedal position sensor

10	E	Signal Fuel pump relay 1	Fuel pump relay 1

11	E	Signal Oil pressure switch	Instrument cluster control unit

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	E	Speed signal	Diagnostic connector

18		Not used

19		Not used

20	A	Activation Auxiliary heater	Auxiliary heater

21	E	Signal Oil level sensor	Instrument cluster control unit

22	A	Signal Processed wheel speed, rear right	ABS/ASC unit

23	A	Signal Clutch switch	Clutch switch

24	E	Signal Brake light switch	Light switching centre control unit

25		Not used

26	E	Terminal 15	Fuse F29

27	E	Data link MFL	Volute spring

28	E	Signal Brake light switch	Brake light switch

29	E	Signal Relay, A/C compressor	Relay, A/C compressor

30		Not used

31	E	Signal Auxiliary heater	Heating and A/C control module Dual-function switch recirculated air/rear window defogger

32	E/A	Signal Diagnostic link TXD	Diagnostic connector

33	E	Electronic vehicle immobilisation	Electronic immobiliser control unit

34		Not used

35		Not used

36	E/A	Signal CAN bus high	Connector, CAN bus

37	E/A	Signal CAN bus low	Connector, CAN bus

38		Not used

39		Not used

40		Not used