TC reported intermittent BCU WSP Timer fault when at platform.Train performance was ok. ~~~~~ #3538 Tacho 1,2,3,4, check ok. Dump v/v test ok. Fault code 322, 323. Replaced BCU, wheel diameter setting done. Brake tested ok. Depot shunting, no WSP fault. BCU-New s/n: 1816164.   Old s/n: 1816154. Done by Sanip/Firdaus. 08/09/20.