What was found
L BLEED DUCT WARNING MESSAGE ON EICAS WHILE CLIMBING THROUGH 1500 FEET. R ENG BLEED ALSO CLOSED. NO BLEED SOURCE AVAILABLE-C/A-INTERROGATED MDC, FOUND CORRELATED CODE B1-349536. T/S PER FIM 36-21-01. LRU TEST INDICATES MT137 - 100%. REMOVED AND REPLACED CERAMIC INSERTS OF CONNECTORS MT137P1 AND MT136P1 IAW AMM 36-21-00. REF. ETN-CR-06-020, PER FOHMS CHECK BOTH CH A& B OF L BLEED SYS OHM CHECK GOOD. PERF INITION TEST OF BLEED AIR LEAK DETECTION LOOPS, TEST GOOD. ALSO PERFORMED PRESSURIZATION TEST OF AIRCRAFT IAW AMM 21-31-00. NO DEFECTS NOTED AT THIS TIME.