#3712 Self test fail found during DT che ~~~~~ #3712 check and found BCU speed sensor fault at DT axle-2. Replaced speed sensor and conducted self test - still fail. Further check found #1712 Bogie 1 BCP low, suspect Rio valve faulty Done by: Saini, Din and Morgan  Found #1712 Bogie 1 BCP pressure low at B3 FC 312,318 (BCU service brake avail fault M1 Bogie 1 and BCU emergency brake avail fault    M1 Bogie 1). Replaced Rio valve at #1712 Bogie 1 and function test-ok. BCP pressure within criteria for #1712 Old s/n: 1743075SPC New s/n: 1650006SPC Notification no: 2587872 Done by: Kamal, Firas and Haziq