2003 sonata power fuse 2 issue & overcharging
#1
01-17-2023, 04:44 PM
2003 sonata power fuse 2 issue & overcharging
2003 sonata 2.7L. V6 A/T
i have an electrical issue. when i unhook negative battery cable and run test light between cable and battery test light is lit, but when i pull power fuse 2 my light shuts down off. what does power fuse 2 cover? it looks like it covers etacs and short connector (whatever that is). also now i have a battery with 19 volts being put into it. does alternator have voltage regulator or is it managed by ecm???
i need some help please with these two issues.
thank you for reading my post.
chris
i have an electrical issue. when i unhook negative battery cable and run test light between cable and battery test light is lit, but when i pull power fuse 2 my light shuts down off. what does power fuse 2 cover? it looks like it covers etacs and short connector (whatever that is). also now i have a battery with 19 volts being put into it. does alternator have voltage regulator or is it managed by ecm???
i need some help please with these two issues.
thank you for reading my post.
chris
#2
01-18-2023, 09:42 AM
Hi Chris,
Your "Test" is not accurate nor reliable.
There is , however, an overcharging condition and depending on the cause could have produced addl problems.
Just about all alternators contain a voltage regulator within and some are controlled from within and some are controlled by info from the PCM based on info the PCM receives.
The better way to check this is to check what info is being sent to the alt .
If it is getting a signal to charge when the battery is fully charged ,it depends on where that signal is coming from.
If you don't have the equip to do this, best to have a shop with the tools and info to do this.
If you replace the alt and the problem is gone it was controlled from within. If not , it could be from PCM and without the tools and info ,keep your wallet handy.
Your "Test" is not accurate nor reliable.
There is , however, an overcharging condition and depending on the cause could have produced addl problems.
Just about all alternators contain a voltage regulator within and some are controlled from within and some are controlled by info from the PCM based on info the PCM receives.
The better way to check this is to check what info is being sent to the alt .
If it is getting a signal to charge when the battery is fully charged ,it depends on where that signal is coming from.
If you don't have the equip to do this, best to have a shop with the tools and info to do this.
If you replace the alt and the problem is gone it was controlled from within. If not , it could be from PCM and without the tools and info ,keep your wallet handy.
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