8/18/19

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 2073

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) WWW.EBAAUTOPARTS.COM Page 2073



YES



The measurement value is OK.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 measurement value is not OK.Possible cause and remedy



- Ground cable



- W15/1 (Ground (right footwell))



End of test



1.1.3.2.1.8.2. Test voltage supply of circuit 87.



Test 1.1.3.2.1.8.2.1: Test voltage of terminal 87 at control unit N51 (AIRmatic with ADS control module).



Test 1.1.3.2.1.8.2.2: Test of cable for voltage supply



Test 1.1.3.2.1.8.2.3: Test procedure ground cable



1.1.3.2.1.8.2.1. Test voltage of terminal 87 at control unit N51 (AIRmatic with ADS control module).



Test prerequisite



- Battery voltage is OK.



Test sequence



- Switch off ignition.



- Connect socket box.



- Switch on ignition.



- Measure direct voltage with multimeter between sockets (2.21) 55 and (2.43) 77 of the 126-pole socket box tester.



Specified value



- [11...14 V]



Question



- Is the measurement value OK?



YES



The measurement value is OK.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 actual value is not o.k.Note



- This test did not produce any clear result.



- Select further tests.



1.1.3.2.1.8.2.2. Test of cable for voltage supply



Test prerequisite



- Battery voltage is OK.



Test sequence



- Switch off ignition.



- Connect socket box.



- Switch on ignition.



- Measure direct voltage with multimeter between ground and socket (2.43) 77 of the 126-pole socket box tester.