In this month’s post, Louis from New York provides a diagnostic routine to quickly determine if an alternator is bad and “know for sure without messing around.” He uses the case of a 2014 Grand Caravan with 54,00 miles and a suspected failed alternator (wasn’t charging at all, and no MIL, no charging codes) to illustrate his routine. His quick test, measuring field continuity and integrity of the sense line, might save you some time and effort:
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