Active Handling problems
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Joined: Aug 2007
Posts: 69
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From: Albuquerque New Mexico
Active Handling problems
So here's the latest issue: when you turn AH off or put it into Competitive Mode, when I hit a bump, it goes back to default Active Handling on. If you hit a bump with the default active handling on, it throws codes C1248 and c1254 and U1040 in both IPC and SDM. The codes clear and will NOT throw if you are off or in competitive mode, but the bump will set it back to AH on, and THEN throw the codes. The codes always clear, and it will do it for bumps, and for hard turns. Very easy to replicate at this point. All grounds have been fixed/checked, and all connections seem to be okay. EBCM has been to absfixer twice in its life so far, but not getting those codes luckily.
Anyone ever hear of this happening? Any ideas? What would cause this to default back to on? It will no longer stay off or in competitive mode.
Anyone ever hear of this happening? Any ideas? What would cause this to default back to on? It will no longer stay off or in competitive mode.
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Joined: Aug 2007
Posts: 69
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From: Albuquerque New Mexico
Just for a bump for the new day, this is happening after having (hopefully) fixed some TPS related issues that were throwing reduced engine power. This isn't as big a problem....until I need it. Just tired of all the electrical gremlins happening at this point! Very frustrating!
Tech Contributor
Joined: Jan 2007
Posts: 19,406
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From: Dyer, IN
So here's the latest issue: when you turn AH off or put it into Competitive Mode, when I hit a bump, it goes back to default Active Handling on. If you hit a bump with the default active handling on, it throws codes C1248 and c1254 and U1040 in both IPC and SDM. The codes clear and will NOT throw if you are off or in competitive mode, but the bump will set it back to AH on, and THEN throw the codes. The codes always clear, and it will do it for bumps, and for hard turns. Very easy to replicate at this point. All grounds have been fixed/checked, and all connections seem to be okay. EBCM has been to absfixer twice in its life so far, but not getting those codes luckily.
Anyone ever hear of this happening? Any ideas? What would cause this to default back to on? It will no longer stay off or in competitive mode.
Anyone ever hear of this happening? Any ideas? What would cause this to default back to on? It will no longer stay off or in competitive mode.
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Joined: Aug 2007
Posts: 69
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From: Albuquerque New Mexico
It does say, "Service Engine Soon" before it kicks off the codes But that seems to be the corvette's version of an "idiot light".
I've done a lot of searching but am coming up blank. I've never heard of anyone having this particular problem before.
Any ideas would be much appreciated. I'm trying to swap batteries out, even though less than a month ago I put a new one in.
I've done a lot of searching but am coming up blank. I've never heard of anyone having this particular problem before.
Any ideas would be much appreciated. I'm trying to swap batteries out, even though less than a month ago I put a new one in.
Instructor
Joined: Nov 2004
Posts: 157
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From: Santa Ana California
I would clean all your ground points first, mine were really cruddy. Bill Curlee wrote an excellent write up here.
http://forums.corvetteforum.com/c5-t...tion-long.html
I would also check the two connectors on the EBCM, here's a write-up on how to do remove and replace but it will show you where the connectors are.
http://forums.corvetteforum.com/atta...cm-on-2001.pdf
The top large connector is easy to see, the one under it is harder because its right under the big one and its a lot smaller.
Good Luck!
http://forums.corvetteforum.com/c5-t...tion-long.html
I would also check the two connectors on the EBCM, here's a write-up on how to do remove and replace but it will show you where the connectors are.
http://forums.corvetteforum.com/atta...cm-on-2001.pdf
The top large connector is easy to see, the one under it is harder because its right under the big one and its a lot smaller.
Good Luck!
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Joined: Aug 2007
Posts: 69
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From: Albuquerque New Mexico
The solution was the main ground strap next to the battery. It was "tight" but it still took 1 and a half turns to really torque it down.
I have double nutted it to be sure it won't back out loose again!
Hope that might help someone else down the line.
Thanks to randomus and lucky!
I have double nutted it to be sure it won't back out loose again!
Hope that might help someone else down the line.
Thanks to randomus and lucky!
