"Service ABS, etc" check this post

Reply Subscribe

Thread Tools

Search this Thread

Sep 5, 2009 | 08:43 AM

RB01C5

Thread Starter

Advanced

Joined: Aug 2005

Posts: 50

Likes: 7

From: western mass

"Service ABS, etc" check this post

I had a very good outcome - under $70 - check this post in C5 Tech

Sep 5, 2009 | 08:51 AM

madmatt9471

Team Owner

Joined: May 2006

Posts: 21,473

Likes: 356

From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----

Quote:

Originally Posted by RB01C5

I had a very good outcome - under $70 - check this post in C5 Tech

Very cool!

I did mine @ www.absfixer.com and it was a little more but same result!

Many will find this helpful - thanks for the write-up

Thanks,Matt

Sep 5, 2009 | 09:23 AM

Jet-Jock

Race Director

Joined: Aug 2003

Posts: 13,421

Likes: 8

From: Lake Mary Florida

I see that once in a blue moon, but the owners manual says to turn the ignition off and restart which should clear the condition. My '93 C4 had the same issue from time to time, and its owners manual said the same thing. It has happened two times in about three year's time in the '01. Both times a restart clears it.

It happened about three times in the C4 and only one time did it come on while driving the C4, so I pulled over, stopped and cycled the ignition which cleared the condition. On the '01 it happens before I complete a start cycle, you get a chime right away. So I just cycle the ignition and it is fine.

Wonder what the problems are/were in the EBCM that they are fixing? Bad IC, circuit by pass, resistor pack, connector???

Sep 5, 2009 | 09:48 AM

RB01C5

Thread Starter

Advanced

Joined: Aug 2005

Posts: 50

Likes: 7

From: western mass

Quote:

Originally Posted by Jet-Jock

..........Wonder what the problems are/were in the EBCM that they are fixing? Bad IC, circuit by pass, resistor pack, connector???

There have been a lot of posts about the EBCM problem. The unit has circuit boards inside - all potted in place by a mass of silicone sealant. One weak link is a small 12v power supply relay soldered into the bottom board that is often balky - works one time, may not the next time. It is a cheap part ($1.46 each from Mouser Electronics) but it takes some doing to replace it. Yours sounds like mine started out - rarely acting up. But it gradually got worse - and I got sick of pushing the reset and driving with ABS, etc. disabled. Mine seemed to be fine on a cold start, but would often fail on a warm restart. Cheap relays are often behind electrical gremlins - door locks are another case.

David Ruberg (the Minnesota EBCM repair guy) says they replace the relay - and make some other changes. Take care, Dick B.

Last edited by RB01C5; Sep 5, 2009 at 09:57 AM.

Reply Subscribe