Tuesday, December 10, 2019

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 158


- X63/4 (CAN databus adapter connector, 2-pin)



- Test connectors and wiring for CAN of engine compartment CAN control modules.



- Control unit



Communication with ECU required ( Measuring system )



EC40100



Implausible data was received from the engine control unit.



Test 1: Check the CAN communication with control unit Engine control module.



Test 2: Possible cause:



- Drive train CAN bus



Affected functions:



- Engine diagnosis



- Fuel system



1. Check the CAN communication with control unit Engine control module.



Important note



A CAN timeout fault code is set due to the absence of a CAN input signal.The cause of this may be not only the transmitter control unit, but also the



CAN networking.Possible cause and remedy



- Check CAN communication with affected control unit.



- Check other control units for vehicle CAN bus failure in the stored faults.



- CAN bus has loose contact or Open circuit.



Continue with button F 2



Warning!Communication with ECU required.



2. No further information available.



EC42700



Implausible data was received from the electronic ignition switch.



Test 1: Test control signal for component Fuel pump.



Test 2: Possible cause:



- Cable fault



Affected functions:



- Engine diagnosis



- Fuel system



1. Test control signal for component Fuel pump.



Test 1.1: Measure resistance at component 'Fuel pump'.



Test 1.2: Terminal 15 Test control signal for component N118 (Fuel pump control module).



1.1. Measure resistance at component 'Fuel pump'.



Test sequence



- Switch off ignition.



- Disconnect 8-pin plug from component N118 (Fuel pump control module).



- Connect socket box to component N3/10 (ME-SFI [ME] control unit).



- Disconnect the socket F(2) at control module N3/10 (ME-SFI [ME] control unit).



- Test cable for open circuit.



- Measure resistance with multimeter between socket N118.2.2 and socket [F17] 113 of the 126-pole socket box tester.



- Specified value for line resistances:< 1ohms



Is the measurement value OK?

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