As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LO BRAKE PRESS & ANTISKID INOP ANNUNCIATOR ILLUMINATED AT START OF T/O ROLL CAUSING WHEEL BRAKE FAILURE, THE EMERGENCY BRAKING SYSTEM WAS USED. TROUBLESHOT TO POWER BRAKE CONTROL RELAY KN003. RELAY WOULD NOT CLOSE. REMOVED AND REPLACED RELAY IAW CC 560XL WIRING DIAGRAMS 32-40-01. BLED ANTISKID BRAKE SYSTEM. LEAK CHECKS AND OPERATIONAL CHECKS GOOD IAW CC 560XL MM CHAPTER 32-42-00.