Thanks, Goce, for sharing your troubleshooting experience; corrosion being the culprit. I inspected the ABS system multi-pin harness connector terminations. Unplugged it and everything looks well/clean. No sign of corrosion. Nonetheless, I sprayed the female side of connector with a bit of electrical contact cleaner and plugged/unplugged several times. We'll see, but I doubt this cleaner spray will resolve the issue. Of course, can't hurt, either. I will find out soon. But, I'm in limbo, waiting for the return-arrival of my fuel injectors I 'mailed out' for ultrasonic cleaning. Reason being, I was consistently experiencing/developing hesitation/firing-cut-out at higher speeds. Makes me think injector(s) have a compromised spray pattern. In an attempt to rule out causes, I first performed a tune-up; replaced plugs, wires, rotor/cap. Also cleaned throttle body and butterfly-operating throttle plates. No change. So, I have to believe it's the result of compromised-spray-pattern injectors. I'll soon find out. Should receive cleaned injectors within another week. Fyi, the sat unused for several years prior to me buying/acquiring.
Oh, also, I replaced underside-located fuel filter as well.
Process of elimination....is in process.