TC reported BCU fault in rear DT car 3655. MR pressure was above 9.0 bars. Train was reported to be moving and stopping intermittently. TC was instructed to ope rate STBS and proceed in ATPM at no more than 35kph to ORC1. ~~~~~ TC reported BCU fault in rear DT car 365     Checked Tims,FC: 301/307/308 occurred at 2129 hrs.Fault did not clear.To follow up ops20 and c/o BCU. Checked Johua. 27/10/21 3655 to Change out BCU Change out BCU and fault clear.BIC and STBS normalised/seal. Brake function test ok and BCP within criteria.Wheel condition check and found #3656-A3 wheel having thermal crack 10x10mm(ADDL) Fault trace downloaded. #3656 BCU- New s/n: 1847403 Old s/n: 1446068 Not: 2326351 raise. #3656-A3 wheel thermal crack- Not: 2326429 raise for wheel profiling (ADDL) Done by Faddzal/Koh. 27/10/21