3636 DT check found BCP pressure low. ~~~~~ #3636 BCP at 0.56 bar at B1.Swapped control pressure transmitter,fault did not transfer.Swapped ACU,fault remain at #3636.Proceed to replace BCU,BCP at 0.77 bar when at B1 position.Brake function test carried out-ok. Done by Kumar/Jack/Koh. 08/01/20