711/712 Self test fail found during DT check ~~~~~ 711/712 Self test fail found during DT check   711/712 conduct self test 711 side fail. 2712/1712 fault code 2712 FC354, 1712 FC 250. Speed sensor 3 fault 2711/2712/1712 BCU show unit unhealthy. Further check found 2711 gateway hunting, swap 2711/2712 gateway done, conduct self test still NG. 711 further check found 2711 #2 bogie service brake pipe coupling joint air leak. Remove, reinstall and tightened - ok. Conduct self test passed x2. Conduct limited movement 711/712 with braking W/S/S appeared and fault 1712/2712 BCU unit fault. FC 1712 308/331, 2712 - 308, 333 Most likely speed sensor need to C/O. 2712 #3 speed sensor - O/S 1712 #3 speed sensor - O/S ops20 Swap gateway 2711/2712 S/N: 1805050SPC 2712/2711 S/N: 1735022SPC Done by: Haslan and Asruddin. 05/02/2024. 1712/2712 Speed sensor 3 fault to change out   #1712 SS3 swap to 1702 SS3 and #2712 SS3 C/O done. Limited movement not fault and self test ok. Done by: Rizman, Sanip, Koh, Jack. 05/02/2024.