What was found
STATUS MESSAGE "R ENG FIRE LP 1". TROUBLESHOT IAW MM, REPLACED M681 CARD, NO HELP. ALSO TRIED REPLACING DETECTOR NR2, NO HELP. NEED MORE TIME TO TROUBLESHOOT. REPLACED NR 2 ENG LOWER RT FIRE LOOP. PROBLEM STILL THERE. ALL LOOP RESISTANCES ARE WITHIN LIMITS. ALL CONNECTOR PINS AND SOCKETS CHECK GOOD. FOUND NO DEFECTS ON ENGINE HARNESS. RELATED FIREWALL CONNECTOR PINS AND SOCKETS CHECKED GOOD. REPLACED M683 CARD (LOOP 1 RIGHT) PER MM, OPS CHECKED OKAY NO MESSAGES. VERIFIED DETECTION CARD M684 (LOOP 2 RIGHT, MR26091-696) CHANGED.