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09-23-2010
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#1 |
Join Date: Dec 2007
Location: Fremont, CA
Posts: 3,093
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ABS fixed.
Finely found the problem,a broken wire somewhere in the dash most likely when I removed the CDM box.A HUGE thank you to David Fulcher at Ellis Chevrolet in Georgia.Out of all the people Ive talked to looking for the issue David was the one that explained the system and what to look for.
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09-23-2010
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#2 |
 
Join Date: Aug 2008
Location: Houston, TX
Posts: 2,314
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Re: ABS fixed.
Awesome Jeff. I know how good it feels to finally solve a problem thats been eating at you for a while.
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09-23-2010
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#3 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,663
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Re: ABS fixed.
Jeff:
This is excellent news!! Wish me luck on my ABS project this weekend. Here's hoping that I have the same results. Tom |
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09-23-2010
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#4 |
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Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,816
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Re: ABS fixed.
Wow, congrats - I know that one's been eating at you for a long time.
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09-23-2010
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#5 |
 
Join Date: Mar 2008
Location: Pendleton, IN
Posts: 674
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Re: ABS fixed.
Glad to here you were finally able to get that rascal fixed Jeff!
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09-23-2010
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#6 | |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,168
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Re: ABS fixed.
Quote:
as for the ABS fix  (would have done more smilies, but the limit is 6)
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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09-23-2010
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#7 |
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Join Date: Dec 2007
Location: Fremont, CA
Posts: 3,093
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Re: ABS fixed.
Gordon................can I have my $40 back?
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09-23-2010
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#8 |
Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,609
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Re: ABS fixed.
You are the man!
way to go Jeff. :chee rs:
__________________
1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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09-24-2010
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#9 | |
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Join Date: Dec 2007
Location: Fremont, CA
Posts: 3,093
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Re: ABS fixed.
Quote:
 [/IMG]Here..............pick a wire.Dave is well aware of these forums,the info I got is on the CAC in a ABS trouble shooting article written by Hib Halverson as well as Dave and a few others.The pink wire in the 20 cavity plug was loose in the orifice,this wire supplies 12 volts to the over voltage relay in the ABS well.The 12 volts then goes to the red-white wire that supplies voltage to the controller.
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06-14-2011
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#10 |
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Join Date: Dec 2007
Location: Fremont, CA
Posts: 3,093
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Re: ABS fixed.
A little elaboration is in order.Back a few years ago when I had the CDM controller out for repair I unplugged everything in the area of the controller to make getting it out easier.When I plugged everything back in one of the wires was pushed out of the plug housing,this wire was the main power wire for the over voltage relay.This would explain why the entire system was dead and no scanner could ever get a trouble code.From what I understand the ABS system is basically the same from 86-91,a little difficult to pull codes or codes arent stored as in the latter systems.There are 4 relays in the ABS well,the main relay is the over voltage relay.This relay gets power before the ABS controller so if the system is dead one needs to look here first for power,this is the biggest relay in the ABS well.The most common problem in one of these ABS systems is a dirty sensor at the wheel,these are magnets that pick up debris.
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Linear Mode
