TIMS showed BCU BCP fault at cars 1557 and 1558 when train is stopped at platform, but fault disappe ars when train is moving. Train performance slightly jerky d uring braking. ~~~~~ #1557/#1558 Both car fault code 308, 330, 331. Brake cycle test ACU air leak from exhaust port at B1 to coast. Checked by Zulq/Asruddin. 31/08/20. #1557 & #1558 ACU change out. Brake function test ok. BCP within criteria. #1557-ACU: Old s/n: 1008-005  New s/n: 1032-044. Not: 2194993 raised. #1558-ACU: Old s/n: 1025-006  New s/n: 1024-036. Not: 2194995 raised. Done by Sanip/Fadzzal/Firdaus. 31/08/20.