Friday, July 3, 2020

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1018


2.3. Test signal voltage of component B28 (Pressure sensor).



Figure legend



- A -ConnectionTest cable 35-pin socket box



- 001 -Sockets of component N3/10 (ME-SFI [ME] control unit)



- 05 -35-pin socket box



- 050 -126-pin socket box



- 108 -Test cable 266 589 01 63 00



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



- II 1-63ConnectionTest cable



- III 64-126ConnectionTest cable



Warning!



- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050).



Continue to test with button F2



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?