#3504 and #1504 brake fault. To check an ~~~~~ #3504 and #1504 brake fault. To check an     #3504 & #1504 Having ACU stuck brake when EM to coast. Replaced both ACU and carried out brakes cyclic/function test-ok. #3504 ACU- Old s/n: 1236-040  New s/n: 1107-036 Not: 2179656 raise. #1504 ACU- Old s/n: 1310-143  New s/n: 1032-037 Not: 2179653 raise. Done by Koh/Din. 15/07/20