1992 corvette SYS and security light flashing
Thread Starter
Intermediate
Joined: Jan 2018
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1992 corvette SYS and security light flashing
so iv pretty Much dialed down all my other issues and this is my last bit. My SYS and security light are flashing. My trip/ gas buttons don’t work either, is there a correlation with these? Iv looked up other forums but most of them say SYS and no start condition. My car runs pretty much perfect (for 140,000 miles id say). Since I can’t use the gage buttons I can’t get rid of the change oil light either. Where should I begin?
Any help would be great thank you
Any help would be great thank you
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
The security light should flash when the door is opened and the key is not in the ignition or engine running.
The SYS light many times indicates the battery is weak and may need to be replaced. However the SYS light may also indicate a code in module 1 of the CCM. You might try to pull the codes and just see what comes up.
As a very very long shot, disconnect the battery for a minute and see if there are any changes. Pull the codes first because all codes will be cleared when battery is disconnected.
The SYS light many times indicates the battery is weak and may need to be replaced. However the SYS light may also indicate a code in module 1 of the CCM. You might try to pull the codes and just see what comes up.
As a very very long shot, disconnect the battery for a minute and see if there are any changes. Pull the codes first because all codes will be cleared when battery is disconnected.
Thread Starter
Intermediate
Joined: Jan 2018
Posts: 48
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The security light should flash when the door is opened and the key is not in the ignition or engine running.
The SYS light many times indicates the battery is weak and may need to be replaced. However the SYS light may also indicate a code in module 1 of the CCM. You might try to pull the codes and just see what comes up.
As a very very long shot, disconnect the battery for a minute and see if there are any changes. Pull the codes first because all codes will be cleared when battery is disconnected.
The SYS light many times indicates the battery is weak and may need to be replaced. However the SYS light may also indicate a code in module 1 of the CCM. You might try to pull the codes and just see what comes up.
As a very very long shot, disconnect the battery for a minute and see if there are any changes. Pull the codes first because all codes will be cleared when battery is disconnected.
Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
Do you have the FSM? I posted CCM diagnostics in a .pdf to a post last week. It's the complete CCM diagnostics and CCM section from the FSM.
Here's the thread - I asked a user to 'proof read' - I don't see where he's ever responded!
https://www.corvetteforum.com/forums...post1596491081
Last edited by WVZR-1; Feb 6, 2018 at 10:56 PM.
Thread Starter
Intermediate
Joined: Jan 2018
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13 is a DIC switch shorted to B+ OR 'open'
Do you have the FSM? I posted CCM diagnostics in a .pdf to a post last week. It's the complete CCM diagnostics and CCM section from the FSM.
Here's the thread - I asked a user to 'proof read' - I don't see where he's ever responded!
https://www.corvetteforum.com/forums...post1596491081
Do you have the FSM? I posted CCM diagnostics in a .pdf to a post last week. It's the complete CCM diagnostics and CCM section from the FSM.
Here's the thread - I asked a user to 'proof read' - I don't see where he's ever responded!
https://www.corvetteforum.com/forums...post1596491081
hmm weight I took a look at that what exaclty does that mean though?
Thread Starter
Intermediate
Joined: Jan 2018
Posts: 48
Likes: 0
13 is a DIC switch shorted to B+ OR 'open'
Do you have the FSM? I posted CCM diagnostics in a .pdf to a post last week. It's the complete CCM diagnostics and CCM section from the FSM.
Here's the thread - I asked a user to 'proof read' - I don't see where he's ever responded!
https://www.corvetteforum.com/forums...post1596491081
Do you have the FSM? I posted CCM diagnostics in a .pdf to a post last week. It's the complete CCM diagnostics and CCM section from the FSM.
Here's the thread - I asked a user to 'proof read' - I don't see where he's ever responded!
https://www.corvetteforum.com/forums...post1596491081
Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
Judging from your original post and the C13/H13 codes it hints maybe bad DIC, poor connection @ DIC or maybe even a CCM issue. SYS & SECURITY maybe throws a bit of a curve to the diagnostics though.
Have you ever been into the dash for any issue at all? Is the radio OE or after-market? Maybe not relevant to your issue but it might explain someone being in the dash.
It seems maybe ODD that with the DIC mostly inoperative that you could actually get into the CCM diagnostics. You used a procedure similar to those in the file I posted?
Have you ever been into the dash for any issue at all? Is the radio OE or after-market? Maybe not relevant to your issue but it might explain someone being in the dash.
It seems maybe ODD that with the DIC mostly inoperative that you could actually get into the CCM diagnostics. You used a procedure similar to those in the file I posted?
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Thread Starter
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Judging from your original post and the C13/H13 codes it hints maybe bad DIC, poor connection @ DIC or maybe even a CCM issue. SYS & SECURITY maybe throws a bit of a curve to the diagnostics though.
Have you ever been into the dash for any issue at all? Is the radio OE or after-market? Maybe not relevant to your issue but it might explain someone being in the dash.
It seems maybe ODD that with the DIC mostly inoperative that you could actually get into the CCM diagnostics. You used a procedure similar to those in the file I posted?
Have you ever been into the dash for any issue at all? Is the radio OE or after-market? Maybe not relevant to your issue but it might explain someone being in the dash.
It seems maybe ODD that with the DIC mostly inoperative that you could actually get into the CCM diagnostics. You used a procedure similar to those in the file I posted?
Team Owner
Joined: Sep 2003
Posts: 25,393
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If you had the DIC in your hand, then when you replaced it you didn't get the harness connector secured. Is this a recent problem or it's been there since you bought? I'd think the first check would be the connector @ the DIC.
I've replaced the DIC, the printed circuit on a couple but I've never removed the actual 'switch pack' to see how practical it might be to just maybe check/replace the resistors used. Dependent upon 'talent' maybe that's a viable option.
Last edited by WVZR-1; Feb 7, 2018 at 10:30 AM.
Melting Slicks
Joined: Jan 2014
Posts: 2,478
Likes: 254
From: Downers Grove Illinois
Depending on how the new radio was installed it can cause a SYS light. Does your car have the C68 automatic temperature control?
Last edited by JimLentz; Feb 7, 2018 at 10:41 AM.
Thread Starter
Intermediate
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If you had the DIC in your hand, then when you replaced it you didn't get the harness connector secured. Is this a recent problem or it's been there since you bought? I'd think the first check would be the connector @ the DIC.
I've replaced the DIC, the printed circuit on a couple but I've never removed the actual 'switch pack' to see how practical it might be to just maybe check/replace the resistors used. Dependent upon 'talent' maybe that's a viable option.
I've replaced the DIC, the printed circuit on a couple but I've never removed the actual 'switch pack' to see how practical it might be to just maybe check/replace the resistors used. Dependent upon 'talent' maybe that's a viable option.
so just check the connector in the back? It has been his way since I got it
Team Owner
Joined: Sep 2003
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Using this link you check the connector 'above' the AH and also to the left of the AH.
Image #5 I believe in this eBay offering.
https://www.ebay.com/itm/Drivers-Inf...!US!-1&vxp=mtr
Team Owner
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I understand why the C13 - if he has enough control over the DIC to clear CCM codes fine but it might not necessarily make the issue go away.
Intermediate
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so iv pretty Much dialed down all my other issues and this is my last bit. My SYS and security light are flashing. My trip/ gas buttons don’t work either, is there a correlation with these? Iv looked up other forums but most of them say SYS and no start condition. My car runs pretty much perfect (for 140,000 miles id say). Since I can’t use the gage buttons I can’t get rid of the change oil light either. Where should I begin?
Any help would be great thank you
Any help would be great thank you
Thread Starter
Intermediate
Joined: Jan 2018
Posts: 48
Likes: 0
whoa whoa whoa calm down lol. Iv been on vacation but I got into the dash today and the connector on the back was out a little little but and a little dirt cleaned it up and now the DIC works fine so thanks for the all the help. Now any one know how to take apart the steering column to get to the blinker and cruise control lever it’s loose and only left had (down) works but pulling it back, up, forward, it’s all super loose and not even connected