A2249 Digital diesel electronics control unit

Plug connector overview

NumberX-pin, colourDescription
X241196-pin, blackComponent connector Digital diesel electronics control unit
X241258-pin, blackComponent connector Digital diesel electronics control unit

Pin assignments at plug connector X2411

PinTypeDescription / Signal typeConnection /
Measuring notes
1AVoltage supply, fuel injectorInjector 4
   
2AVoltage supply, fuel injectorInjector 6
   
3AVoltage supply, fuel injectorInjector 5
   
4 Not used 
   
5 Not used 
   
6MGround, charge air temperature sensorCharge air temperature sensor
   
7MGround, coolant temperature sensorCoolant temperature sensor
   
8MGround Exhaust temperature sensor before catalytic converterExhaust temperature sensor before catalytic converter
   
9MGround Exhaust temperature sensor before particle filterExhaust temperature sensor before particle filter
   
10ESignal, oil pressure switchOil pressure switch
   
11MGround, fuel temperature sensorFuel temperature sensor
   
12MGround Oxygen sensor before catalytic converterOxygen sensor before catalytic converter
   
13 Not used 
   
14MCamshaft sensor groundHall-effect sensor, camshaft 1
   
15MGround, crankshaft position/rpm sensorSpeed (rpm) sensor
   
16MOxygen sensor heater in front of catalytic converterOxygen sensor before catalytic converter
   
17 Not used 
   
18 Not used 
   
19 Not used 
   
20 Not used 
   
21 Not used 
   
22 Not used 
   
23 Not used 
   
24ASignal, electric changeover valve for engine mountElectrical changeover valve, engine mount
   
25MGround, fuel injectorInjector 4
   
26MGround, fuel injectorInjector 6
   
27MGround, fuel injectorInjector 5
   
28 Not used 
   
29 Not used 
   
30AVoltage supply, rail pressure sensorRail pressure sensor
   
31 Not used 
   
32AVoltage supply, boost pressure sensorBoost pressure sensor
   
33ASupply Exhaust backpressure sensorExhaust backpressure sensor
   
34ESignal Exhaust temperature sensor before particle filterExhaust temperature sensor before particle filter
   
35 Not used 
   
36ESignal Oxygen sensor before catalytic converterOxygen sensor before catalytic converter
   
37 Not used 
   
38ESignal, oil level sensorOil level sensor
   
39AVoltage supply, crankshaft position/rpm sensorSpeed (rpm) sensor
   
40 Not used 
   
41 Not used 
   
42 Not used 
   
43 Not used 
   
44AActivation, DDE relayDDE main relay
   
45ESignal, hot film air mass meterHot-film air mass meter
   
46ESignal, intake air temperatureHot-film air mass meter
   
47MGround Hot-film air-mass meterHot-film air mass meter
   
48 Not used 
   
49AVoltage supply, fuel injectorInjector 1
   
50AVoltage supply, fuel injectorInjector 3
   
51AVoltage supply, fuel injectorInjector 2
   
52 Not used 
   
53 Not used 
   
54ESignal, boost pressure sensorBoost pressure sensor
   
55 Not used 
   
56ESignal, rail pressure sensorRail pressure sensor
   
57ESignal, fuel temperatureFuel temperature sensor
   
58ESignal Exhaust temperature sensor before catalytic converterExhaust temperature sensor before catalytic converter
   
59ESignal Exhaust backpressure sensorExhaust backpressure sensor
   
60ESignal Oxygen sensor before catalytic converterOxygen sensor before catalytic converter
   
61 Not used 
   
62ESignal, camshaft sensorHall-effect sensor, camshaft 1
   
63 Not used 
   
64 Not used 
   
65 Not used 
   
66 Not used 
   
67 Not used 
   
68A/EBi-directional data interfacePreheating control unit
   
69A/EBi-directional data interfaceAlternator
   
70MGround, preheating control unitPreheating control unit
   
71ASignal, volume control valveVolume control valve
   
72ASignal, rail pressure control valveRail pressure control valve
   
73MGround, fuel injectorInjector 1
   
74MGround, fuel injectorInjector 3
   
75MGround, fuel injectorInjector 2
   
76 Not used 
   
77 Not used 
   
78MGround, rail pressure sensorRail pressure sensor
   
79 Not used 
   
80MGround, boost pressure sensorBoost pressure sensor
   
81MGround Exhaust backpressure sensorExhaust backpressure sensor
   
82ESignal, coolant temperatureCoolant temperature sensor
   
83ESignal, charge air temperatureCharge air temperature sensor
   
84ESignal Oxygen sensor before catalytic converterOxygen sensor before catalytic converter
   
85 Not used 
   
86MGround, oil level sensorOil level sensor
   
87ESignal, crankshaft position/rpm sensorSpeed (rpm) sensor
   
88 Not used 
   
89 Not used 
   
90 Not used 
   
91 Not used 
   
92 Not used 
   
93ASignal Boost pressure adjuster 1Boost pressure adjuster 1
   
94ASignal, solenoid valve for exhaust gas recirculationSolenoid valve, exhaust gas recirculation
   
95ASignal, changeover valve for swirl flapsElectric changeover valve, swirl flaps
   
96ASignal Throttle valveThrottle valve
   

Pin assignments at plug connector X2412

PinTypeDescription / Signal typeConnection /
Measuring notes
1EVoltage supply, control unitB+ potential distributor
   
2MGroundGround point
   
3EVoltage supply, control unitB+ potential distributor
   
4MGroundGround point
   
5EVoltage supply, control unitB+ potential distributor
   
6MGroundGround point
   
7EWake-up signal, terminal 15Connector , terminal 15 wake-up signal
   
8 Not used 
   
9 Not used 
   
10ESignal, electronic vehicle immobilizerCar access system
   
11EDiagnosis, fuel heatingFuel heater
   
12 Not used 
   
13 Not used 
   
14ESignal, battery sensorBattery sensor
   
15 Not used 
   
16 Not used 
   
17 Not used 
   
18 Not used 
   
19ASignal, E-box fanE-box fan
   
20 Not used 
   
21 Not used 
   
22 Not used 
   
23EBrake light test signalBrake light switch
   
24 Not used 
   
25 Not used 
   
26 Not used 
   
27 Not used 
   
28 Not used 
   
29MGround, accelerator pedal position sensorAccelerator pedal module
   
30MGround, accelerator pedal position sensorAccelerator pedal module
   
31ASignal Solenoid, radiator shutterSolenoid, radiator shutter
   
32 Not used 
   
33A/ESignal PT-CAN lowCAN-bus connector
   
34EStart signalCar access control unit
   
35 Not used 
   
36EBrake light signalBrake light switch
   
37 Not used 
   
38 Not used 
   
39ESignal, accelerator pedal position sensorAccelerator pedal module
   
40ASignal, electric fanElectric fan
   
41 Not used 
   
42 Not used 
   
43ASupply, accelerator pedal position sensorAccelerator pedal module
   
44 Not used 
   
45 Not used 
   
46A/ESignal PT-CAN highCAN-bus connector
   
47 Not used 
   
48 Not used 
   
49 Not used 
   
50ESignal, clutch switchClutch switch
   
51 Not used 
   
52ESignal, accelerator pedal position sensorAccelerator pedal module
   
53ASpeed signalOBDII socket
   
54 Not used 
   
55 Not used 
   
56ASupply, accelerator pedal position sensorAccelerator pedal module
   
57 Not used 
   
58 Not used