Hello,
I need some help to diagnose a Mercedes W203 what show on MFD "Battery Alternator Visit Workshop".
The charging voltage is 14,5-14,7v at idle,the wiring was checked between alternator and Front SAM.
No faults related to charging system was stored.
Regards.
No faults stored, thats unusual, what scanner are you using and where are you looking ??
Some history please, has this had an alternator fitted recently ?
Have Engine Earth and Alternator B+ been Volt Dropped, with alternator fully loaded ?
Could you probe the 2 small alternator wires from Ign off, ign on,cranking and idling then post the file.
Hello,
I used Star but the readed faults isn't related to the charging...some bulbs and other stuffs .
The alternator wasn't changed,I checked the wires and no abnormal voltage drop on B+
On MB forum I read about the changing of alternator...what I can check before replace it?
Thank you.