Train EB was applied at track circuit S512 in Auto mode with Obstructed Motion Detected. Released EB- ok. Proceeded in Auto mode to next station. ~~~~~ Train EB was applied at track circuit S5     Check Tims observed #3567 FC-740 obstacle detected happen twice.Further check ODS continuity A/S wire 954 and 9152 from fire panel when shake ODS wire 7923(underframe) found resistance fluacting.Remove 7923 wire insulation and found wire broken above crimp and cause resistance fluacting.Cut further up extended wire & re-crimp 7923 wire and cont check 51.3ohm steady while shake wire underframe.9154 & 9152 output 24vdc ok.9151 to LGV05 110vdc output from FRCB ok.DDS A & B side height 50mm pass.Monitor no observe obstacle detect fault recure. Done by Sanip/Rizman. 12/04/22