m923a2 abs light on constant

[Amosclifford1978]

I have a 1990 bmy m923a2 that the abs light stay on as soon as the switch is turned on and never goes out. i installed a new ecm as i assumed it was the problem do to the generator going way over voltage. New module does the same thing. Where should i check next? Thinking about ordering the diagnostic scanner but prefer not to spend $250 for one time use.

 

[Jbulach]

Someone on here did a good write up years ago on repairing all the damage to the CTIS, ABS and a few other things, caused by over voltage due to failed generator or improper shutdown sequence. Hopefully the user name will come to me… maybe @saddamsnightmare ?