As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING ASA T/C 31-005-00 FOUND SMT MESSAGE BLEED FAMV RVDT L SIGNAL IS OUT OF RANGE MAINTENANCE MESSAGE 36-12030. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK 36-12-00-810-803, ELECTRICAL LRU - REPLACEMENT TEST WHICH PASSED. DUE TO HISTORY AND MULTIPLE LEG FAULTS REPLACED THE FAN AIR MODULATING VALVE REF B737-9 AMM 36-12-03. PERFORMED OPS TEST. NO FAULTS.