Cytat z eLearn'a:
The efficiency of the recharging system is controlled by the Body Computer which measures the D+ signal coming from the alternator with the engine moving (revs above 700 rpm).
If the voltage measured is insufficient, the warning light in the instrument panel is switched on as well as the display of a message.When the alternator does not turn and therefore does not recharge the battery, an earth signal is sent from pin D+ - connector A - of A10 to the Body Computer M1 - pin 19 of connector A: this is connected via the CAN line to the instrument panel E50 and manages the switching on of the recharging warning light in the instrument panel as described above.
Także ja tu widzę dwie możliwości:
1. Przy wymianie albo przez jakieś skumulowane przypadki gdzieś jest przerwa na przewodzie wzbudzenia od alternatora +D do bodycompa wtyk A pin 19 przez kostke D004 przy skrzynce bezpieczników pod maska pin 5
2. Z alternatora nie wychodzi sygnal do body
Jak masz elerna to tam jest wszystko jest w schemacie opisane.