Hi. I was driving on a snowcovered road and did a panic brake. No reaction from the ABS only locked wheels. Then I stopped, turned off the ignition, waited a some seconds and turned on the ignition again expecting the ABS lamp to turn on and after a few seconds turn off. It never turned on. Then I called a friend with a diagnostic tool (workshop quality) and he ran a few tests including one that should start the ABS pump. Nothing reaction.