Quote:
Originally Posted by roy'sz
no but it isn't unheard of for that to happen to an alternator especially if the internal regulator is shorted. you can use a fluke meter to determine this by hooking up the leads to the hot post on it and to ground
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@OP: If you can use a multimeter, the FSM should have testing procedures to isolate the problem. If not in the FSM, the general procedure is the same for most cars and should be in the Chilton (or similar) books you can find at auto parts stores for recent Nissans with V-6s.
What makes you think it is overcharging? High reading on dash voltmeter? Burnt up battery? Something else?