Why does my alternator not charge the battery?

This means that you could have a weak alternator, or a poor connection at the battery terminals. You could also have a loose drive belt, which is what supplies power to the alternator itself. If the drive belt is loose or not working properly, the alternator will not charge.

What controls the alternator not to over charge the battery?

Originally Answered: How does a car alternator not overcharge the battery? (Will the alternator supply electrical load and battery in the car not be overcharged because of the alternator’s higher voltage output than the battery?) The voltage regulator controls the voltage supplied to the battery.

How do you tell if a battery is overcharged?

#5 Symptom: The only exact way to check for overcharging is by measuring the voltage across the battery. When the vehicle engine is off and all the accessories are turned off, the voltage across the terminals should be around 12.6 volts.

What should battery voltage be on Acura alternator?

This is most likely a faulty alternator voltage regulator (should be checked under a load) or an alternator problem which can be tested by following the below steps: If the voltage is 12 volts or lesser, the battery is low on charge. A good battery should have 12.6 volts If the charge is below 12, it should be charged to 12.6 volts.

Why is my Acura Battery Light not working?

If your ACURA battery light stays ON or your ACURA won’t start, the problem may be due to electrical issues. ACURA electrical issues can be tricky and challenging to figure out. The first step in troubleshooting ACURA battery problems is to check the charging system, including the operation of the battery and alternator.

What should I do if my Acura TSX battery is not charging?

Check the wires going to the alternator plug. Most of the wire will be covered and wrapped to protect it, but make sure nothing is pinched, or broken at the connectors or along the length to the starter, the battery, and the fuse box. Inspect these wires all along their length to make sure they are not damaged.

Why is my Acura alternator not working properly?

If all the windows are facing this problem, most probably it is due to a faulty alternator. The problem could be that the performance of the alternator may be sufficient to maintain the battery charge but inadequate for the window motor. A window motor requires higher amps to function properly.

How to test Acura battery, alternator, charging system?

Connect the red clamp on the positive battery terminal. Connect the negative clamp on the negative terminal. Perform a battery and alternator test procedure. Your local auto parts store may offer free battery and charging system testing. The alternator won’t charge the battery.

Where are the battery terminals on an Acura?

Newer ACURA have a plastic cover on top of the battery. If necessary, remove the cover to access the positive and negative terminals of the battery. Connect the red clamp on the positive battery terminal.

Why does my car battery light go off when I start the car?

A bad alternator can fail to adequately charge the battery while the car is running. First, check to make sure your alternator belt isn’t loose, as this can cause issues with charging. Start the engine and visually verify that the alternator belt isn’t slipping.

If I leave the generator relay unplugged, the battery light does not work at all. If I bridge the wires it will only come on with the car off and key forward. I did notice however that the battery light is slightly more dim than the rest of them. A picture of the back of the plug and what wires go where would be much appreciated.

Where does the charging warning light go on an alternator?

Black and yellow goes from the alternator plug to that generator relay. Blue wire goes from generator relay to that interior harness (C25) which goes to the instrument panel wiring (My 3rd pic the plug on the left) which looks to be for the instrument cluster for the “charging warning light”. Click to expand… Gotcha.

Where does the alternator go in a Mitsu?

The alternator harness goes to the fusebox and that diode or the “generator relay” that Mitsu calls it hangs around the fusebox. Then, you have those 4-white wires that go into the fusebox between the 100A fuse and the fusible link. I am doing a wire tuck right now.

Where does the generator relay plug go on an alternator?

Can a car battery be drained by an alternator?

While you might initially think that any problems with electrical things like lights or radio not working are directly related to the battery, the alternator is actually where most of the power in your vehicle comes from. Consider that if you were to leave the lights of your car on overnight by the next day your battery might be drained completely.

Why does the battery light come on after the alternator is replaced?

This would make the Battery Light come on. It is also possible that there is a problem with the fusible link or the alternator fuse for the charging system.

What should I do if my alternator keeps dying?

The alternator is essentially a generator and it keeps your battery charged while supplying additional electrical power for the other systems in the vehicle. If you have a new alternator and your battery keeps dying on you, then there’s definitely a problem that you’re going to need to look into.

How can I tell if my alternator is working or not?

If you’re not 100% sure, you can use a multimeter, or a voltmeter, to check the current coming from your battery. Attach the positive lead to the positive battery terminal, that’s the red one, and then the negative leave it to the black terminal. With the engine off you should be getting a reading of 12.5 volts on your multimeter.