Thursday, January 3, 2019

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1327


1.5. Test voltage supply of the potentiometers of component M16/6 (Throttle valve actuator).



Test prerequisite



- At least one of the relevant actual values is not okay.



- The power supply of component N3/10 (ME-SFI [ME] control unit) is OK.



Test sequence



- Switch off ignition.



- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).



- Measure direct voltage with multimeter between sockets (M.39) 39 and (M.43) 43 of the 35-pole socket box tester.



- Switch on ignition.



Specified value



- Voltage[4.75...5.25] V



Question



- Is the measurement value OK?



YES



The measurement value is OK.Possible cause and remedy



- Check lines from component M16/6 (Throttle valve actuator) to component N3/10 (ME-SFI [ME] control unit).



End of test



NO



The measurement value is not OK.Possible cause and remedy



- N3/10 (ME-SFI [ME] control unit)



End of test



2. Check air filter and intake tract for blockage.



Possible cause of fault



- Intake system clogged



Possible remedy



- Check entire air intake system for unmetered air.



End of test



2193



Open circuit in right oxygen sensor upstream of TWC [KAT] (lambda control was switched off). (P2A00)



Possible cause:



- G3/4 (Right O2 sensor, before TWC [KAT])



Affected functions:



- Engine diagnosis



- Exhaust system



-------------------------------------------------



Test 1: Check component G3/4 (Right O2 sensor, before TWC [KAT]).



1. Check component G3/4 (Right O2 sensor, before TWC [KAT]).



Warning!Communication with ECU required.



2197



Open circuit in left oxygen sensor upstream of TWC [KAT] (lambda control was switched off). (P2A03)

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