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hello everyone, need to see if anyone has a waveform for the alternator for a 2008 kia sedona v6. Im having an issue where the alternator is not charging when in drive with all loads on. There are even moments where alternator output is below 12.5volts even when in drive only, no other loads on. I scoped the blue wire from the pcm to the alternator both at idle and in gear, but i have no reference or info in alldata to tell me how it operates. Once you put it back in park the voltage returns to 14+ volts. Any help here would be appreciated!
There was a light on before it died on the customer while driving. I haven’t seen one yet, but like I said in park with no loads it’s charging normally. I just got the battery fully charged today, and still the same. It’s great until you put it in drive. So weird.
The smart charge system I would assume would kick in with a low charge state on the battery though. Seems to be backwards. Unplugging the alternator has the same if not slightly worse results.
I’ve looked through every module for scan date, all I can find is a battery voltage pid. Nothing for command. I don’t even have good service data for theory of operation. The light wire seems to be also the feed back for the IPM, this van has no battery sensor in the wiring diagram, so I dk how it determines state of charge of it is a “smart” system.
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