Rough bumpy road multiple DTC codes
Thread Starter
Instructor
Joined: Jan 2006
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From: Boynton Beach Florida
2018 C6 of Year Finalist
Rough bumpy road multiple DTC codes
After driving on a rough road last night my right window and power lock stopped working, then multiple codes started comming up. Most of the codes start with U but on the PCM I am getting a P1626H and on the SCM B2607H. Has anyone had this problem? Can I fix this myself? Feedback please.
Race Director
Joined: Oct 2004
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Originally Posted by Bunk930
After driving on a rough road last night my right window and power lock stopped working, then multiple codes started comming up. Most of the codes start with U but on the PCM I am getting a P1626H and on the SCM B2607H. Has anyone had this problem? Can I fix this myself? Feedback please.
Melting Slicks
Joined: Jan 2006
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Originally Posted by shopdog
I suspect you've loosened a ground connection. Those can be hard to find if you aren't familiar with where all the grounding points are. If you have a shop manual, they're all listed. If you don't, then patiently go around and check every ground connection you can find. Many of the electrical gremlins in these cars can be traced to bad ground connections. That's because the plastic body doesn't allow easy grounding.
There is a lot to be desired in 'consumer' grade radios, and a little careful work in this area paid great dividends.
Same thing when I bought a mexican Fender Stratocaster to play around with. With a little copper cladding to build a faraday cage into the body and pick guard, and careful grounding and shielding work, including use of small sheilded coax in the body, it became an amazingly quiet and hum free guitar in all pickup configurations, including of course, hum-bucker.
Like this:
http://www.guitarnuts.com/wiring/shielding/shield3.php
http://ratcliffe.co.za/articles/hotrodshield.jpg
So I wonder if it would be worthwhile to simply install a completely seperate and redundant grounding arrangement in order to eliminate such issues. Technically, it would cause 'ground loops' if the existing wiring is left behind (which I would recomend), but for our 12VDC systems, I don't think that is an issue at all, even for radio antenna performance. If some wire is good to ohmically connect point to pint, extra wire can do no harm...
I would not do it to a healthy C6, but if mine persists with odd symptoms, I'll take it in. But if they fail to find it, I think some checking/paralleling of existing ground could not hurt.
Flame suit on.
Last edited by TrackNoob; Aug 17, 2006 at 10:50 PM.
Thread Starter
Instructor
Joined: Jan 2006
Posts: 103
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From: Boynton Beach Florida
2018 C6 of Year Finalist
thanks
I actually have a '99 C5 must have I posted this on the wrong forum. Everything that I have read tells me that the ground is the problem. earlier today I took off a door panel and out of the blue later the window started working. When I went for a test drive the codes came back and the window and lock would not work. I think a ground is the likely the problem, I hope. Thanks, Bunk.
