Originally Posted by
ttmmdd
I can't imagine how the computer can apply the brakes, there's no mechanism for it in the system. The anti-lock brakes work by relieving pressure from any wheel that is sliding. Probably what you felt as the computer applying the brakes was the car down shifting (I presume this is an automatic which may be the source of the problem).
That is incorrect. The Acceleration Slip Regulation (ASR) applies the brakes at speeds up to 50 mph. ASR gets input from all wheel speed sensors, the parking brake switch, stop light switch, the PCM, TCM and the ESP control switch. The information is feed to the ABS circuits in the Controller Anti-Lock Brake (CAB). They all are related.
Clearing all the codes is a good place to start, drive the car and then read codes again. As has been suggested steady reliable electric supply is necessary for the system to operate properly.
By any chance does your wing go up randomly ? Does it stay up even when stopped?