DT685/686 having undershootEvent show 2685 bcp having abnormalities. ~~~~~ CAR NO: #2685. FAULT DETAIL: FOUND BRAKE PRESSURE 3.02 AT COAST. ACTION TAKEN: REPLACED ACU, SECURITY CHECK, OK. FUNCTION CHECK, OK. BRAKE STATUS CHECK, OK. NO LEAK DETECTED AT SITE.SHAHRIE/JIMMY/BUDIMAN,04/03/20 ACU S/NO OLD: 1549/215 -NOTIF TO RSW: 2137538 NEW: 1503/068