8/14/19

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 2369

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 2369



Figure legend



- A89 (DTR controller unit)



Test prerequisite



- The voltage test at component G1 (Battery) is o.k.



- Fuse 45 in component N10/1 (Driver-side SAM control unit with fuse and relay module) is o.k.



Test sequence



- Switch off ignition.



- Detach coupling at component A89 (DTR controller unit).



- 1.Measure direct voltage with multimeter between sockets 1 and 1.6



- Switch on ignition.



Specified value



- [11.0 ... 14.5] V



Question



- Is the value o.k.?



YES



Note



- In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors for loose



contact and corrosion..



End of test



NO



The measured value is not within the specified value range.Possible cause and remedy