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Old 04-15-2012, 09:37 PM   #30 (permalink)
steffen707
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Join Date: Oct 2009
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Quote:
Originally Posted by danwat1234 View Post
The civic computer instructs the alternator to drop from 14.5 volts to 12.5 (ie. not charging the battery) when all of the following are true:
This isn't entirely true, when the ecu grounds the alternator control circuit "C" wire, the alternator does drop to 12.5 volts, but it is in fact still charging. I tested this with an almost dead battery that couldn't start the car. I jumped it and while grounding this "C" wire the car ran just fine.
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