Service charging system
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Heel & Toe
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Service charging system
I have replaced the alternator with a ULTRA brand alternator from O'Reillys...the battery was purchased brand new from the dealer a month ago when I replaced the starter. The SERVICE CHARGING SYSTEM message still displaces and the Voltage guage does not go over 13....What could still be the problem?
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From: Chicago Il
I have replaced the alternator with a ULTRA brand alternator from O'Reillys...the battery was purchased brand new from the dealer a month ago when I replaced the starter. The SERVICE CHARGING SYSTEM message still displaces and the Voltage guage does not go over 13....What could still be the problem?
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Heel & Toe
Joined: Nov 2015
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I had the same problem. i tried a lot of things and could not come up with an exact solution. I changed my battery and went back to a gm alternator. It solved the problem for a while then mine also came back with service charging system. I dont have an answer for you but I am posting because I had the same problem and did not find a solution.
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From: Below the bottom of Berby Hollow, NYS
I'm sure one of the electronic gurus here will diagnose it for you, if you can wait a day or two or whenever they show up. 
Waiting for help is a heluva lot better than randomly replacing parts.
Waiting for help is a heluva lot better than randomly replacing parts.
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From: Chicago Il
Race Director
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The alternator positive wire goes to the starter solenoid, there is a bus bar through the starter solenoid to another cable terminal, and off the second terminal, that cable leads to the positive battery terminal.
The negivite wire off the battery goes to a ground screw on the side of the engine block just above the starter.
There is another positive wire off the battery that goes to the engine bay fuse block.
So for starters, these need to be checked to make sure that they are clean, the terminals not broken, and the bolts/nuts tight.
As for the OEM valeo alternator most of the time the OEM's are replaced is not due to the brushes/ voltage regulator worn out, but the coil wires broken loose in the alternator instead. Hence once the coil wires break loose, rebuilding the alternator is not going to fix it and it will still put out low voltage/amperage.
So on that note, once you have checked the charging wires to make sure that all their connection are clean and tight, have the new alternator replaced with an another unit (and don't be surprised if the replacement rebuilt unit has the same problem as well).
The negivite wire off the battery goes to a ground screw on the side of the engine block just above the starter.
There is another positive wire off the battery that goes to the engine bay fuse block.
So for starters, these need to be checked to make sure that they are clean, the terminals not broken, and the bolts/nuts tight.
As for the OEM valeo alternator most of the time the OEM's are replaced is not due to the brushes/ voltage regulator worn out, but the coil wires broken loose in the alternator instead. Hence once the coil wires break loose, rebuilding the alternator is not going to fix it and it will still put out low voltage/amperage.
So on that note, once you have checked the charging wires to make sure that all their connection are clean and tight, have the new alternator replaced with an another unit (and don't be surprised if the replacement rebuilt unit has the same problem as well).
Last edited by Dano523; Nov 15, 2015 at 06:10 AM.
