DC reported 683/684 - BCU fault during t ~~~~~ DC reported 683/684 - BCU fault during t     #2684 Check Tims fault record having BCU release fault.Found heavy air leak at solenoid v/v exhaust port. Replaced ACU and conduct brake function check ok. Acu New s/n: 1538/158  Old s/n: 1549/210 Not: 2149336 raise to RSW. Done by Samsudin/Pravin. 09/04/20