What was found
AT 80 KNOTS DURING TAKEOFF ROLL, AUTO BRAKE FAULT, BRAKES RELEASED MESSAGE ON ECAM. MAINTENANCE REPLACED THE BRAKING AND STEERING CONTROL UNIT IAW AMM 32-42-34, BITE TEST OF THE BRAKING AND STEERING CONTROL UNIT IAW AMM 32-46-00-740-001A, AND PERFORMED SATISFACTORY OPS CHECK.