Tuesday, November 10, 2020

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 835


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



- Measure direct current with multimeter between sockets (F.4) 100 and [M.53] 53 of the 126-pole socket box tester.



- Switch on ignition.



Specified value



- Amperage[0.3...0.6] A



Question



- Is the measurement value OK?



YES



The measurement value is OK.End of test



NO



The measurement value is not OK.Possible cause and remedy



- N10/1f57 (Fuse 57)



- N10/1kI (Circuit 87 relay, engine)



- Line between component N3/10 (ME-SFI [ME] control unit) and component Y32 (Air pump switchover valve)



- Line between component N10/1 (Driver-side SAM control unit with fuse and relay module) and component Y32 (Air pump switchover valve)



- Y32 (Air pump switchover valve)



End of test



1073



Y22/6 (variable intake manifold switchover valve) : Short circuit to positive (P2010)



Possible cause:



- Y22/6 (variable intake manifold switchover valve)



Affected functions:



- Engine output



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



Test 1: Check component Y22/6 (variable intake manifold switchover valve).



1. Check component Y22/6 (variable intake manifold switchover valve).



Test 1.1: Test actuation of component Y22/6 (variable intake manifold switchover valve).



Test 1.2: Test current consumption of component Y22/6 (variable intake manifold switchover valve).



1.1. Test actuation of component Y22/6 (variable intake manifold switchover valve).



Test prerequisite



- The vacuum system is leaktight.



Test sequence



- Run the engine for a short time and switch off again.



- Switch on ignition.



- Actuate component Y22/6 (variable intake manifold switchover valve).(Actuate with key F2.)



Specified value



- Testing The rod of the vacuum unit can be seen to operate.(See arrow)

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