3547 TIMS showed BCU Timer 1 fault. MSP ~~~~~ 3547 TIMS showed BCU Timer 1 fault. MSP NB  3547 TIMS showed BCU Timer 1. 3547-FC 322(WSP timer /activation time out) ER download but fault date & timing does not match. Measure TACHO GEN 1-4 -OK. Swap BCU from 1547 to 3547. Replaced new BCU AT 1547. Wheel dia setting done. Brake pressutre - OK. No pressure when coasting. Limited movement - OK. Depot shunting - OK. AFTER SWAP & REPLACED BCU S/N. 3547 -1816154 1547 -1810079(NEW) 3547 -(2007260-OLD) Sarma/Sugu/Anand 45241