#3601,DURING DT CX FOUND 0.27 BAR AT COA ~~~~~ Check Tims was no FC related observed.Brake test during B1 to Coast BCP 1 & 2 remain at 0.27 bar and BE found ACU exhaust port heavy air leak.(mod 3 solenoid) Replaced ACU and function tested ok. ACU-Old s/n: 1439-012  New s/n: 1516-048 Not: 2191007 Done by Sanip/Koh/Faddzal. 20/08/20