A2249 Digital diesel electronics control unit 13 Not used
Connector location views
14 Not used
15 Not used
16 Not used
Number X-pin, Description
17 E Signal Presupply pressure Presupply pressure sensor
colour
X2412 sensor
X2411 9-pin, black Plug connector Digital diesel electronics control unit
18 Not used
Module 1
19 Not used
X2412 24-pin, black Plug connector Digital diesel electronics control unit
Module 2 20 Not used
X2413 52-pin, black Plug connector Digital diesel electronics control unit 21 Not used
Module 3
22 Not used
X2414 40-pin, black Plug connector Digital diesel electronics control unit
Module 4 23 Not used
X2415 9-pin, black Plug connector Digital diesel electronics control unit 24 Not used
Module 5
Pin assignments at plug connector X2413
Pin assignments at plug connector X2411
Pin Type Description /Signal type Connection /Measuring notes
Pin Type Description /Signal type Connection /Measuring notes X2413 1 A Supply Air mass sensor Air mass sensor
1 E Voltage supply Terminal 15 Fuse carrier, engine electronics 2 E Signal Air mass sensor Air mass sensor
2 Not used 3 M Ground Air mass sensor Air mass sensor
3 E/A Diagnostic link TXD Transmission control unit 4 E Signal Hall-effect sensor, Hall-effect sensor, camshaft 1
4 M Signal, lock front passenger's Ground connector camshaft 1
door 5 Not used
5 M Signal, lock front passenger's Ground connector 6 E Signal Speed (rpm) sensor Speed (rpm) sensor
door
7 Not used
6 M Signal, lock front passenger's Ground connector
door 8 Not used
7 A Terminal 15 Transmission control unit 9 Not used
8 E Voltage supply Terminal 15 Fuse carrier, engine electronics 10 E Signal Solenoid valve, exhaust Solenoid valve, exhaust gas
9 E Activation, main relay DDE relay
X2414 gas recirculation recirculation
11 Not used
12 E Signal Preheater relay Preheater relay
Pin assignments at plug connector X2412
13 Not used
Pin Type Description /Signal type Connection /Measuring notes
14 A Supply Boost pressure sensor Boost pressure sensor
1 Not used
15 E Signal Boost pressure sensor Boost pressure sensor
2 Not used
16 M Ground Boost pressure sensor Boost pressure sensor
3 E/A CAN bus low Transmission control unit
17 M Ground Hall-effect sensor, Hall-effect sensor, camshaft 1
4 E/A CAN bus high Transmission control unit camshaft 1
5 Not used 18 Not used
6 Not used 19 M Shield, speed (rpm) sensor Speed (rpm) sensor
7 Not used 20 M Ground Rail pressure sensor Rail pressure sensor
8 A Activation, engine mount Electrical changeover valve, 21 Not used
engine mount
X2411 22 Not used
9 A Supply Presupply pressure Presupply pressure sensor
sensor X2415 23 A Supply Solenoid valve, Solenoid valve, supercharger
supercharger control control
10 M Ground Presupply pressure Presupply pressure sensor
sensor 24 E Alternator load signal Alternator
11 Not used 25 A Signal Electric changeover Electric changeover valve, swirl
valve, swirl flaps flaps
12 Not used
26 Not used
27 Not used 13 E Signal Pedal position sensor Pedal position sensor
28 E Signal Coolant temperature Coolant temperature sensor 14 A Supply Pedal position sensor Pedal position sensor
sensor
15 Not used
29 E Signal Intake air temperature Air mass sensor
16 Not used
30 Not used
17 A Engine speed signal output (TD) Diagnostic connector
31 M Ground Speed (rpm) sensor Speed (rpm) sensor
18 Not used
32 M Ground Coolant temperature Coolant temperature sensor
sensor 19 Not used
20 A Activation Auxiliary heater Auxiliary heater
33 E Signal Rail pressure sensor Rail pressure sensor
21 A Signal Oil level sensor Light switching centre control unit
34 Not used
22 E Rear right speed signal ABS/ASC unit ABS/DSC unit
35 A Supply Rail pressure sensor Rail pressure sensor
23 E Signal Clutch switch Clutch switch
36 Not used
24 E Signal Brake light switch Brake light switch
37 Not used
25 Not used
38 A Supply Rail pressure control Rail pressure control valve
valve 26 A Voltage supply Terminal 15 Fuse F29
39 Not used 27 E Data link MFL Volute spring
40 E Signal Oil level sensor Oil level sensor 28 E Brake light test signal Brake light switch
41 E Signal Oil pressure switch Oil pressure switch 29 E A/C compressor signal Relay, A/C compressor
42 Not used 30 Not used
43 Not used 31 E Signal Auxiliary heater Heating and A/C control module
44 Not used 32 E/A Signal Diagnostic link TXD Diagnostic connector
45 Not used 33 E/A Communication line (EWS) Electronic immobiliser control unit
46 Not used 34 Not used
47 Not used 35 Not used
48 Not used 36 E/A CAN bus high Connector, CAN bus
49 Not used 37 E/A CAN bus low Connector, CAN bus
50 E Signal Battery charge indicator Alternator 38 M Ground Coolant outlet Coolant outlet temperature
lamp temperature sensor sensor
51 E Voltage signal, terminal 30h Starter 39 E Signal Coolant outlet Coolant outlet temperature
temperature sensor sensor
52 E Signal Preheater relay Preheater relay
40 Not used
Pin assignments at plug connector X2414
Pin assignments at plug connector X2415
Pin Type Description /Signal type Connection /Measuring notes
1 A Battery charge indicator lamp Instrument cluster control unit Pin Type Description /Signal type Connection /Measuring notes
signal (terminal 61) 1 A Supply, injectors 4-6 U422 Voice input
2 A Voltage signal, terminal 30h Instrument cluster control unit 2 Not used
3 Not used 3 A Signal, injector 6 Injector 6
4 E Signal Electric fan Electric fan 4 A Supply, injectors 1-3 U407 Basic interface telephone
5 Not used 5 A Signal, injector 1 Injector 1
6 Not used 6 A Signal, injector 4 Injector 4
7 M Ground Pedal position sensor Pedal position sensor 7 A Signal, injector 3 Injector 3
8 E Signal Pedal position sensor Pedal position sensor 8 A Signal, injector 2 Injector 2
9 A Supply Pedal position sensor Pedal position sensor 9 A Signal, injector 5 Injector 5
10 E Signal Fuel pump relay 1 Fuel pump relay 1
11 A Signal Oil pressure indicator Instrument cluster control unit
lamp
12 M Ground Pedal position sensor Pedal position sensor
