3538 - BCU Fault (DT Check) ~~~~~ 3538 BCU Fault (DT Check).  3538 ER D/L & found FC 308/330/331. When from B3 to COAST, pressure become EM brake pressure. Replaced ACU & brake pressure test - OK. (Refer to attached brake pressure checklist) Depot shunting - oK. #3538 ACU S/N : OLD : 1048-034 NEW : 1302-050  Selvan/Lee PT 44183