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Discussion Starter #1
Hi all,

New to the forum. I just bought a second hand 2014 Civic and its been great except one thing.
Every-time I start the car, 10 seconds later, "Check Charging System" pops up and battery light come on in the dash.

To my understanding, the system had an ELD which controls when the alternator kicks in and when it does not.
Whenever I start the car, I get a reading in the 14v's, regardless of what accessories are on, headlights, etc.

I have changed the battery. I have changed the negative terminal battery sensor. I have changed the ELD (in hood fuse box). I have checked all other fuses.

Message still comes on every time.

Any ideas?
Thanks for your input.
 

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Hi all,

New to the forum. I just bought a second hand 2014 Civic and its been great except one thing.
Every-time I start the car, 10 seconds later, "Check Charging System" pops up and battery light come on in the dash.

To my understanding, the system had an ELD which controls when the alternator kicks in and when it does not.
Whenever I start the car, I get a reading in the 14v's, regardless of what accessories are on, headlights, etc.

I have changed the battery. I have changed the negative terminal battery sensor. I have changed the ELD (in hood fuse box). I have checked all other fuses.

Message still comes on every time.

Any ideas?
Thanks for your input.
What model?
Any electrical mods?
 

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Discussion Starter #5
I acttually put in a new alternator from O'Reillys yesterday. I get some fluctuation, between 13.5 - 14.6V at idle, all consumers off. I believe the voltage regulator is built in the alternator, right?
The Check Charging System light remains on.
 

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I acttually put in a new alternator from O'Reillys yesterday. I get some fluctuation, between 13.5 - 14.6V at idle, all consumers off. I believe the voltage regulator is built in the alternator, right?
The Check Charging System light remains on.
Correct.
I do not know the quality of an o'reilly alternator; but many aftermarket parts do not play well with some Honda systems...
Sounds like you will need to consult the service manual for further diagnosis.
 

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Discussion Starter #7
Thank your for your continuous input and help. Where could I gain access to a manual? Would that be a similar/same manual that honda techs use?
 

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Discussion Starter #10
Alternator charging at 14volts when the message and light come on too?
Yes, having the voltmeter connected it is on 14.5-14-6V constantly as soon as the vehicle is started.

I was able to follow the procedure in one of the links and perform a self-check but it does not give me anything conclusive. I get the following message:
F-CAN --- ERROR
B-CAN --- OK
UART --- OK
 

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Discussion Starter #12
F-CAN now ok. I did the test a few more times and its good.

I installed an alternator (thinking its the voltage regulator) from a known good Civic of the same year as a test.
Still the same. I am exhausted of ideas. If anybody has anything else to suggest before I bring it to the dealer.

THanks
 

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F-CAN now ok. I did the test a few more times and its good.

I installed an alternator (thinking its the voltage regulator) from a known good Civic of the same year as a test.
Still the same. I am exhausted of ideas. If anybody has anything else to suggest before I bring it to the dealer.

THanks
Sorry man I've got nothing more to offer...
 

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If Teeps' help wasn't sufficient I feel bad for you because the dealership probably won't be much help either. But at least they'll be able to lay eyes on it and touch it where Teeps is just trying to help from far away.
 
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