Thursday, June 10, 2021

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1027


Figure legend



- B28 (Pressure sensor)



- 126/1 -'Secondary air injection left bank of cylinders' shutoff valve



Test prerequisite



- The power supply of component B28 (Pressure sensor) is OK.



Test sequence



- Switch off ignition.



- Connect the vacuum tester to the input of component B28 (Pressure sensor) with the 3 x distributor.



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



- Measure direct voltage with multimeter between sockets [ M.15 ] 15 and [ M.86 ] 86 of the 126-pole socket box tester.



- Switch on ignition.



Specified values



- Ignition ON: >3.5 V



- Operate engine at idling speed.(Vacuum> 500 mbar):< 2 V



Question



- Are the measurement values OK?

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