Hi, in ure case the abs ecu is obviously a main ecu. it sounds like you have a can communication problem where your system detects hi speed can malfunction, or interferance, measure your end of line resistance=120ohms and network nominal value should be 60ohms voltages between can hi and low should ad up to 5v , or to ground eg. can hi=2.7v then can low should measure 2.3v. if either one of these measurements dont add up you know which cercuit is at fault.
It might even be a vehicle speed /wheelspeed sensor contaminated or damaged component causing system shut down.
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
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If the speedo and odometer are not working it could be the speed sensor in the transmission. And the speed sensor could also knock out the ABS and traction control systems. Have you had the body computer scanned for trouble codes ?
You need to replace the traction control module located on the ABS pump. There are places in the US where they will rebuild it for you with warranty for about $150. Its tricky to get off (you need to remove the rad hose between the battery and the pump to get to it, but don't disconnect the ABS module, just the TC module mounted at end of the ABS unit (has a bunch of brake lines coming out if it).
The power steering is variable assist, relative to the speed of the vehicle, so if the speedo doesn't work, then the PS won't and you should have TC and ABS lights on. The electrical connectors to the module are tricky to remove. don't force them. One connector has a sliding lock bar.
electrical fault ,but where ??power steering is electrical ??then its one of the big fuses under the bonnet with a dirty connection ,if its manual power steering ???i havent a clue because not many of these here in spain for me to play with
I have a 2000 Catera that when I changed the electronic brake control module all warning lights went off, speedo and odo worked. New EBCM is $2000 Cdn I got mine used for 170. also it can be re built at modulemasters.com for $160. Not sure about the dash light tho.
It's your ETCBM ( Electronic Traction Control Brake Module ). Had the same problem . This will cause your speedometer , ABS brakes and check engine light to come on.You'll even notice your stering is a little stif. I had my mechanic remove it and sent it out to Module Masters for rebuild ( 5 year warranty ) Works like a charm now. Those guys are really great .Cost me with freight $160 plus mechanic to R & R it. www.modulemasters.com
I found this info online . Most mechanics will say it is a Speed sensor, but after many hours and going that route you'll see what I mean.
PS: You can still drive the car ( carefully ) while you wait for the rebuilt unit to be returned.
I have the 2000 Cadillac Catera Sport and I had the same problem. ABS, TC light and no speedometer and odo. I thought it was an electrical problem however I solved the problem by refurbishing the ABS Module. If you bring to the dealer it will cost you $3,000. You can have your ABS module rebuilt try modulemaster.com they do it for about $200 I believe. I got mine fixed because a friend of mine removed them and soldered some loose connectors together. All it cost me was a case of beer! It worked for my car just a suggestion for you guys. My ABS Module was a Bosch 5.3. Hope this helps!