Quote:
Originally Posted by dkznyc
... My thoughts are since the ecu tells the alternator to charge the battery depending on the power level, maybe there is something wrong with the communication between the regulator(built in the alternator) ecu and alternator to battery. ...
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While it is possible that the ECM is to blame, I have not seen anyone else report that, so I'm assuming it is a rare occurrence.
My guess is that you have a wiring problem - something didn't get plugged in correctly, wire(s) cut/burnt, &c.
Next on my list is the battery; then the alternator.