12/21/2023 0 Comments 2005 honda odyssey battery![]() ![]() The article is from 2009, so I'll guess that it is relevant to my '11 and the '07-'08 issues I mentioned.Īnd most of it makes sense, but it appears to have the diodes connecting to ground drawn backwards in the circuit diagram, which throws a little doubt on things. I found this interesting article describing the Honda charging system I promise I'll keep this updated with whatever answer I find. Ideally someone else out there has had this problem, solved it, and stuck around long enough to tell the solution. Unfortunately that thread got derailed by people offering general alternator advice, and the 3 people ('07, '08, '08) with similar issues never posted conclusions. I think it is controlled by the PCM, and found another report of a guy with his Odyssey under warranty where the dealer replaced the battery, alternator, fuse box (I'll guess they wanted to replace the ELD and figured they'd overkill it while billing to warranty), and PCM, with a few days of diagnostics by the best the dealership had to offer. What I don't know is what could cause the red charging light to come on while the alternator is clearly generating sufficient voltage. I know that taking it to someone else might get me an answer which may be helpful or not. I know batteries and alternators can fail, but mine appear to be fine. " Any ideas on what could possibly cause the red charging indicator light to come on like this?" Thanks for the ideas, but I mostly need help on the last part of my question there, ![]() So it seems to me that the alternator is good and the battery is good.Īny ideas on what could possibly cause the red charging indicator light to come on like this? This done using a voltmeter on the battery posts. Following instructions over the phone with me just now, she confirmed 12.2V battery voltage this morning before driving, then the red light came on while driving, then at the end of her brief trip, without shutting the engine off, she went and confirmed 13.9+V at the battery, while idling. Now that she's on a trip a few hundred miles away, the one-time problem has become intermittent and is now happening more frequently. So I just told my wife (who drives this car) to pay attention and keep me posted. When this first happened, I checked voltages = all good, the battery is less than 2 years old = good, I pulled the 2P connector on the battery negative terminal to reset the battery management, all connections tight. The red battery light (that is supposed to indicate a problem with charging) has been coming on intermittently starting a week or so ago, along with the CHANGE bATT message. In my case, I got the light, sometimes the message, but NEVER had any electrical problems I could measure.Ģ011 Odyssey LX, about 110k miles, no problems at all until. In a true alternator failure, you will have electrical problems where the alternator does not generate current and maintain voltage as it should, and you would probably get a warning light and message. Still on the original alternator at 136k miles, having replaced the alternator pulley (OAD) at around 90k.Īlso to be clear for people finding this with a common alternator failure. Still possibly useful info in here for others, but that was the "answer" in my situation. UPDATE in AUG 2022 - following extensive debugging and no repairs at all, this problem eventually fixed itself and has been fine for over a year now. ![]()
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