Check charging system Honda Accord with new alternator part 1 of 2

[@AJPrieto444]

Same issue 2017 accord but when ac is on and only in park or idle with ac on. I get the same message.

[@RBTheMechanic]

That is wierd check alternator voltage output with ac on

[@AJPrieto444]

Update after many visits to the mechanic that could not seem to help me and some research via Reddit I have concluded that more than likely my alternator is faulty or defective. I have to take it back to advanced auto parts tomorrow so they can give me another replacement. Hopefully this does the trick, various people have had this issue with the brand Carquest (Advanced Auto Parts Brand) thanks again fellas!!!

[@pkgamer5619]

Mine only does it when it’s cold and I don’t let it warm up. Why does it do that?

[@RBTheMechanic]

It maybe weak battery

[@kidnman4605]

Can a fried abs circuits not show a check engine light? But i see soft code on my scanner sometimes eps vsa random but cleares after clearing with scan tool. I removed main fuse box relay and reseat it again thats when i seen check charging system and cleared after shut off and restart. I hear misfire wot once in a while. What could it be the cause you think?

[@RBTheMechanic]

It shows abs light not check engine light

[@OGThinkster]

So the smaller guage single wire that plugs into the alternator, I'm assuming is the trigger or activator to get the alternator to output the 14+ VDC? I find that if I check battery voltage after starting car, I'm at 12.3 V and I was expecting to see charge voltage (~14.xx V) but nope! If I disconnect that small guage wire for like 20 seconds or so and plug back in, then the alternator will output the 14.4V, But I will then see the "Check Charge System" message. That message only comes on if I disconnect/reconnect that wire, so it seems it doesn't like when you do that. Can you explain why the alternator outputs when that wire is disconnected? The same thing happens with a replacement alternator as well..

[@RBTheMechanic]

It’s smart charging system so alternator dosent need to provide power u less it’s required that way it’s less load on engine and good fuel economy so it’s normal for it to be 12v try putting on headlight ac wipers it will try jump on voltage that’s how I check and give it few minutes to determine it need to charge

[@boostindc2]

@@RBTheMechanic im having the same exact issue. Can that 1 wire plug be disconnected as a temporary fix so i can get 14v+? Did you figure out the problem OGThinkster?

[@DavidMontalvo-c8e]

I have a question I have the same vehicle 2014 Honda accord my alternator is still new it’s been bout a year since I’ve had it just switched out the battery a week ago switched out my sensor module to the battery my car still says check charge system and the battery light pops up but goes away the check charge system stays the car still runs any idea what could be casing the issue would be really helpful

[@RBTheMechanic]

Check ur horn fuse other wise alternator could be bad

[@DavidMontalvo-c8e]

The battery light does go away after few minutes but the car still drives fine I was thinking it could be eld fuse going out

[@dapackagesands]

How do you get it off your dash

[@RBTheMechanic]

Check fuse for horn and see if that resolves the issue

[@alfianidris1901]

Thats a battery sensor problem.

[@RBTheMechanic]

Ok

[@josewrlddd3093]

I'm having check charge system problem on my 2014 accord, i tried to jump another car but the other car still didn't turn on, i followed the instructions on my jumper cables so i believe i did it right, on my drive home the check charge system came on the dash and the battery light came on. ever since that the check charge system has been coming on almost every day. sometimes the battery light will come on when I'm driving then come off after a few minutes. i went to auto zone and o'rielly's multiple times to have my battery and alternator tested multiple times and every time they have both passed every time. car has died two times at night when i just arrived home both times, started right back up in the morning like nothing happened, the second time it happened the car shut off after turning it on in the morning. i let it sit for a few days and didn’t drive it at all now it turns on and drives fine with the light still coming on and off while driving. i unplugged and plugged back in battery sensor, i checked all the fuses as well and i changed the battery sensor and i cleaned both terminals really well. not really sure what it could be. any ideas?

[@RBTheMechanic]

Press ur horn and let me know if it works other wise maybe u friend the sensor on battery or alternator is bad u can disconnect and connect the sensor back try that and update me

[@josewrlddd3093]

@@RBTheMechanic horn works and i have disconnected and reconnected the sensor as well and it still comes up

[@josewrlddd3093]

@@RBTheMechanici just tested with a multi meter, when the car is off i get around 14.50 but when the car is on i get around 13.20

[@RBTheMechanic]

@@josewrlddd3093 seems good voltage there

[@RBTheMechanic]

@@josewrlddd3093 then it maybe alternator dropping the voltage

[@fisherbrown903]

Abs cause Alternator problem?

[@RBTheMechanic]

Nope not abs

[@those_eyes]

I asked hondan and they said code needs to be cleared

[@RBTheMechanic]

Ok I have cleared it before had same issue but worth the try

[@fisherbrown903]

Alot of rebuild alternator r junk, Better get a brand new or from. Dealer rebuild mr rb

[@RBTheMechanic]

Yup for Hondas 2013 and up only dealer

[@kevintillack1396]

Carquest is advance auto parts brand

[@RBTheMechanic]

Yes it is and it’s garbage learned it always go original