Train Prep: 2539 Brake fault ~~~~~ Train Prep: 2539 Brake fault     #2539 fault code 308/330/331/312 depot shunting #2539 fault appear.In pit able to duplicate.Swap #2539 ACU to #1539. Brake cyclic test fault unable to duplicate on #1539.Preventive install #2539 new ACU,brake cyclic test ok.#1539 reinstall ACU,Brake cyclic test ok.No abnormalities,BCP within criteria. ACU- Old: 1032/043 New: 1037/048 Not: 2389096 raise to RSW. Done by Zulq/Saini/Asruddin. 8/6/22