What was found
NR 2 ENGINE FIRE LOOP B WARNING MESSAGE. TROUBLESHOT IAW TSM 26-12-00-810-808-A PG1 TO PG3. RESISTANCE FROM EACH LOOP DETECTOR (CORE-FAN PYLON) IS WITHIN LIMITS. NEED TO CONT ON TO PG3 ITEM B OF TSM 26-12-00-810-808-A. ALL RESISTANCE AND READING VALUES WERE WITHIN LIMITS. REPLACED LOOP IAW AMM 26-12-17 ,MESSAGE CLEARED, SHOOK AND RANG WIRING FROM JBOX TO LOWER LOOP, NO MESSAGE AND FAULTS. RAN ENGINE AND FIRE CHECKS AND NO FAULTS FOUND. OP CHECKED GOOD.