On our old 1994 GM SUV, with the help of a shop manual, all you needed was a paper clip. If you had a flat tire would set that code, ABS light would stay on, needed a paper clip to short out two pins on the diagnostic plug, think an 89 Continental was the same way.
Today you need a way overpriced piece of crap scanner made in China.
Getting an alldata repair manual is all you needed.
Can't even fire up the ABS pump anymore without an overpriced scanner for proper brake bleeding.
ABS was almost good back then, ten pulses per seconde, new crap made law by an idiot congress is more like one pulse per second that is great for tearing up your front suspension.