3543 - BCU FAULT DURING TRAIN PREP ~~~~~ 3543 - BCU FAULT DURING TRAIN PREP. Checked and found TIMS shows BCU Release Fault [FC312], BCU BCP Fault Bogie1 [FC330], BCU BCP Fault Bogie2 [FC331] and BCU Fault [FC308].  3543 ER download and shows that BCP stuck. Swap and replace ACU from #3544 to #3543. Function check and found brake unable to release at coast. Swap and replaced BCU from #3543 to #1543. Brake cyclic check - ok. Brake function check - ok. BCP - ok. No residual pressure at coast. All brakes are able to release physically. no air leaks. Limited movement - ok. depot shunting - ok. Further checked found that all #3543 wheel flange having wheel flat (30mm x 50mm). Notif 2595637 raised for wheel profiling. After swap and replace ACU s/n: #3543: 1241/014 #3544: 1048/035 (new) #3543: 1048/032 (Faulty) After swap and replace BCU s/n: #3543: 1808040 #1543: 1815136 (new) #3543: 1745009 (Faulty)  Sarma/Alan/Lee PT/Kamarul/Anand 45416