Found during DT check car 1531 having BC ~~~~~ 1531 Found during DT check having BCU control pressure fault FC - 308 ,330,331,314.  1531 ER D/L - Done. 1531 stuck brake. Replaced 1531 ACU - Done. Function test - OK. Also replaced ACU for 3531, 2532, 1532 & 3532 due to solenoid v/v not Mode 4 type. Brake pressure test for all 6 cars - OK. Air leak test 0.4 bar/5 mins - OK. ACU S/N :      OLD                  NEW 3531         1048-033             1249-045 2532         1310-134             1008-008 1532         1310-144             1032-042 3532         1003-002             1241-042 1531         1037-016             1037-049  Selvan/Lee PT/Alcus 43971