What was found
ON APPROACH, RECEIVED BRAKE STEERING CONTROL UNIT FAULT CHANNEL NR 1. AFTER CLEARING RUNWAY BSCU NR 2 FAULTED WITH LOSS OF NORMAL BRAKES, NOSE WHEEL STEERING, AND ANTI-SKID. MX TAXIED ACFT & DUPLICATED FAULTS AND LOSS OF BRAKES & STEERING. INSPECTED BSCU AND CENTRAL FAULT DISPLAY INTERFACE UNIT RACK CONNECTORS; PERFORMED CONTINUITY & INTEGRITY CHECK OF WIRING FROM CFDIU (1TW) PINS AA/8F, 8G, TO TERMINAL BLOCK. ALL CHECKS GOOD. REPLACED CFDIU IAW AMM 31-32-34-000-001 AND REPLACED BSCU IAW T/C R2A32301. TAXIED ACFT TWICE WITH NO FAULTS NOTED. PART NAME; BSCU, MFG; MESSIER, P/N; C202163382D32, S/N; 005122, TT; 7850, TC; 3086.