As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKES PULSED WHEN APPLIED AT SLOW TAXI SPEEDS, AND MORE BRAKE PEDAL TRAVEL WAS REQUIRED TO STOP AIRCRAFT. BSCU FAULT NR 1 CHANNEL IN PREVIOUS LEG'S REPORT. REMOVED AND REPLACED BRAKE / STEERING CONTROL UNIT. PERFORMED MAINTENANCE TAXI AND BRAKING CHECK IN NORMAL AND ALTERNATE MODES WITH NO BRAKE PULSING, SURGING OR GRABBING OBSERVED.