Check to see that the belt is tight on the alternator.If it is, check the stator wire it may be loose.
It means something is wrong with your charging system. Can be a loose of corroded battery cable, defective alternator or a battery with a dead short.
There is not an alternator indicator light on a Honda Pilot. If the alternator goes out, the battery will not stay charged.
If you are 100% sure the battery and alternator are good and the battery is loosing it's charge then something is on pulling power from the battery. Can be any light or any relay on the vehicle.
The light is on because the alternator is not putting out the required voltage. Either the belt is broken, loose, or the alternator is defective.
Not a good sign, This could mean that your charging system (alternator) isn't doing its job. If you have problems starting the car due to not enough battery power, then check your battery to see if it is holding the charge. If after a while that you had to boost or jumpstart your battery your car gradually dies then check your alternator to see if it is putting out charge to the battery.
Is the alternator actually working. It is possible to buy a new alternator that is defective.
removing negative battery ca ble
Dead cell in the battery requiring it be replaced or something is on pulling power from the battery. Some light or relay.
there is usually a fuse box next to the battery under the bonnet
Usually a bad alternator or regulator. Many auto parts retailers will test the charging system without charging you.
A few causes that will make the Battery Light come on are: 1. Faulty Battery 2. Loose Battery Connection 3. Battery is not Charging, ie. Faulty Alternator
you might have a short take off the negative terminal and connect a test light to the negative cable then touch the negative post with the other end of the test light if the light goes on u have a short