depot shunting observed #1556 Brake faul ~~~~~ depot shunting observed #1556 Brake faul     #1556 fault code 308/330/331 past history reference MO: 11266152 on 03/01/22 #2556 ACU was swap to #1556 on 03/01/22 same fault code.Replace ACU and function check ok.ACU check no abnormalities,BCP within criteria.Brake cyclic test ok for further monitoring on M/L. #1556-ACU Old s/n:1244-105 New s/n:1047-079 Not: 2346191 Done by Saini/Asruddin. 05/01/22