Charging system fault
Thread Starter
Pro
Joined: Oct 2010
Posts: 564
Likes: 12
From: Vancouver British Columbia
My 62K '03 C5Z has a brand new battery in it, and I get the same message maybe once every 3 weeks. It is only at startup, first thing in the morning. I noticed it only gives the message if the car fires RIGHT when I turn the key. Almost like the car started too quickly. LOL
The message disappears instantly, and no codes are thrown. I have been told to not be concerned about it.
The message disappears instantly, and no codes are thrown. I have been told to not be concerned about it.
Instructor
Joined: Sep 2011
Posts: 156
Likes: 1
Got this DIC message for the first time tonight. 
Same experience as everyone else. Came on at startup and quickly went away. 13-14 volts showing on the gauge right after the message.
Hmm... was planning my audio install for this weekend and was about to do the "big 3 upgrade". Maybe this will help?
Any of you guys that have seen this already have the "big 3" done?
Same experience as everyone else. Came on at startup and quickly went away. 13-14 volts showing on the gauge right after the message.
Hmm... was planning my audio install for this weekend and was about to do the "big 3 upgrade". Maybe this will help?
Any of you guys that have seen this already have the "big 3" done?
Tech Contributor
Joined: Jan 2007
Posts: 19,349
Likes: 1,124
From: Dyer, IN
Instructor
Joined: Sep 2011
Posts: 156
Likes: 1
I've done the big three on other vehicles and seen first hand it resolve dimming lights and voltage fluctuation issues. I was asking about the big three in hopes that it might solve this new (to me) "Charging System Fault" message. 
Just wondering if those that have seen this message have done this upgrade or not.
Cheers!
Just wondering if those that have seen this message have done this upgrade or not.
Cheers!
Instructor
Joined: Nov 2011
Posts: 137
Likes: 8
From: Dallas Tx
I found the field wire connector on the alternator was corroded (oxidized). Took it apart and cleaned it with deoxit. Since then the battery has always been charged up - and no messages.
