TC reported TIMS showed BCU WSP timer 1and timer 2 fault at Rear DT car. Fault self cleared after d eparting KRJ SB. Train performance - ok. ~~~~~ Check Tims #3632 FC 322/323 BCU wsp timer 1 & 2 activated (time out) multiple times on different date. Replaced BCU and further monitoring. BCU-New s/n: 1544-298.  Old s/n: 1540-261.    Done by Saini. 23/09/20.