Sys?
Thread Starter
Heel & Toe
Joined: Jul 2007
Posts: 17
Likes: 0
Sys?
I've been away for a couple years. I'm back for your help. I took my '96 out yesterday for a cruise. I noticed 'SYS' flashes on the odometer every minute or so. What is this? Something need servicing? The car drove fine. Any ideas?
Pro
Joined: Jul 2005
Posts: 741
Likes: 37
From: Athens, GA
I went through this problem over the fourth of July weekend. Your problem may be different, but mine was a problem in the battery.
You can read all the details of what I did to troubleshoot and solve the problem here.
http://forums.corvetteforum.com/show....php?t=1750906
Good Luck!
Steven
You can read all the details of what I did to troubleshoot and solve the problem here.
http://forums.corvetteforum.com/show....php?t=1750906
Good Luck!
Steven
Le Mans Master
Joined: Nov 2004
Posts: 9,984
Likes: 1
From: Assault is a behavior, not a device! Cypress TX
St. Jude Donor '11
I attributed it to the charging system. I got the same warning then the next morning I found my battery was dead. After recharging the battery I noticed the interior lights were still on. I found that door switch stuck and drained the battery overnight. Since I haven't seen the warning since, I thougt it indicated some sort of unusual electrical drain was detected. I would think that a failing alternator could show the same since the system would not be fully recharging.
Just my experience and .02.
Just my experience and .02.
Thread Starter
Heel & Toe
Joined: Jul 2007
Posts: 17
Likes: 0
Thanks Guys! OK, it's the battery then. The battery is about 6 yrs old now and I had to charge it last month because I hadn't driven it in about 3 months. I was planning to get another battery soon. Even thought it started up fine and was showing ~14V, I guess it's time to splurge and get a new one! Thanks!
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Le Mans Master
Joined: Sep 2003
Posts: 5,874
Likes: 0
From: Littleton CO
"SYS" indicates that one or more codes has been set in the CCM. It simply seems that weak batteries and aftermarket radios (they disturb the dimming circuit - mine does this but I haven't bothered to do the fix) are the most common cause that people post about.
To be thorough, check codes as shown here: http://www.corvettebuyers.com/c4vettes/codes.htm
You'll need to scroll to the end to find the correct ALDL pins to jump for '96. If my understanding is correct, any codes that will flash "SYS" can be seen this way, but you must keep in mind that '96 is OBDII and that this method does not access the PCM codes (these set the check engine light) as suggested by that site.
***CLIFF'S NOTES: Your battery may be old, but not necessarily bad. See what the code is first.***
To be thorough, check codes as shown here: http://www.corvettebuyers.com/c4vettes/codes.htm
You'll need to scroll to the end to find the correct ALDL pins to jump for '96. If my understanding is correct, any codes that will flash "SYS" can be seen this way, but you must keep in mind that '96 is OBDII and that this method does not access the PCM codes (these set the check engine light) as suggested by that site.
***CLIFF'S NOTES: Your battery may be old, but not necessarily bad. See what the code is first.***
Last edited by jrp; Jul 26, 2007 at 04:25 PM.
Melting Slicks
Joined: Apr 2000
Posts: 2,408
Likes: 3
From: Bel Air Md
That web site is good for showing how to get the codes. Post them so someone can tell you what they mean. If the SYS is still flashing, the codes will have a C ( Current.) in front of the number. If it is an H, it means History or old code. The low battery is a good bet. My book for a 93 shows 30 codes for just the CCM
Instructor
Joined: May 2006
Posts: 174
Likes: 1
From: saginaw michigan
Thanks Guys! OK, it's the battery then. The battery is about 6 yrs old now and I had to charge it last month because I hadn't driven it in about 3 months. I was planning to get another battery soon. Even thought it started up fine and was showing ~14V, I guess it's time to splurge and get a new one! Thanks!
