charging system warning light on?
Thread Starter
Racer
Joined: Oct 2008
Posts: 1,314
Likes: 6
From: VA
charging system warning light on?
Noticed the warning indicator on dash,linage of a battery, this morning. Thought maybe battery needed to be replaced? So got replacement battery and installed it, but warning light still on. Ideas what could be wrong?
Thanks.
Thanks.
Racer
Joined: May 2004
Posts: 1,717
Likes: 89
From: FL
Chances are your alternator is not charging the battery, so you'll want to drive to a shop/dealership that's preferably nearby, and keep you AC and other accessories off so that you have enough juice to get there (in case it is the alternator isn't charging).
Thread Starter
Racer
Joined: Oct 2008
Posts: 1,314
Likes: 6
From: VA
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Racer
Joined: May 2004
Posts: 1,717
Likes: 89
From: FL
The charging system light is not a light that is triggered by a code set in the ECU - it is triggered by low charging voltage or low system voltage - when the problem goes away, so does the light.
If the vehicle has a new battery that is good, all of your grounds are proper and fuses are in good condition (including the alternator or main fuse), then, pretty much the only other alternative is the alternator... I would park the truck until I was ready to get it checked or fixed.
There is an easy quick check you can do in your driveway with a simple voltmeter... Start the truck, put the voltmeter leads on the battery terminals. less than 13 volts, faulty alternator, more than 14.5 volts, faulty alternator - those two are dead giveaways... between the two, the alternator could still be bad, just not putting out enough amperage...
If the vehicle has a new battery that is good, all of your grounds are proper and fuses are in good condition (including the alternator or main fuse), then, pretty much the only other alternative is the alternator... I would park the truck until I was ready to get it checked or fixed.
There is an easy quick check you can do in your driveway with a simple voltmeter... Start the truck, put the voltmeter leads on the battery terminals. less than 13 volts, faulty alternator, more than 14.5 volts, faulty alternator - those two are dead giveaways... between the two, the alternator could still be bad, just not putting out enough amperage...
Thread Starter
Racer
Joined: Oct 2008
Posts: 1,314
Likes: 6
From: VA
The charging system light is not a light that is triggered by a code set in the ECU - it is triggered by low charging voltage or low system voltage - when the problem goes away, so does the light.
If the vehicle has a new battery that is good, all of your grounds are proper and fuses are in good condition (including the alternator or main fuse), then, pretty much the only other alternative is the alternator... I would park the truck until I was ready to get it checked or fixed.
There is an easy quick check you can do in your driveway with a simple voltmeter... Start the truck, put the voltmeter leads on the battery terminals. less than 13 volts, faulty alternator, more than 14.5 volts, faulty alternator - those two are dead giveaways... between the two, the alternator could still be bad, just not putting out enough amperage...
If the vehicle has a new battery that is good, all of your grounds are proper and fuses are in good condition (including the alternator or main fuse), then, pretty much the only other alternative is the alternator... I would park the truck until I was ready to get it checked or fixed.
There is an easy quick check you can do in your driveway with a simple voltmeter... Start the truck, put the voltmeter leads on the battery terminals. less than 13 volts, faulty alternator, more than 14.5 volts, faulty alternator - those two are dead giveaways... between the two, the alternator could still be bad, just not putting out enough amperage...
Seems like it's the alternator. Kind of disappointed that this would need replacing with only 71K on an 06 GX. I've had Hondas and Acuras, all with over 150K miles on them and never had to replace their alternators. One would expect a GX to have a heavy duty alternator? Oh well...