What was found
AIRCRAFT WAS GNDED. AIR INTERRUPT, EMER DECLARED, LANDING UNEVENTFUL & ACFT WAS OVERWEIGHT. DURING CRUISE, L FMC, EICAS MSG & STATUS MSG WAS RECEIVED. MX MSG WAS 31-51023. TROUBLE SHOT IAW FIM 31-44-00-810-865. R & R MODULE 002 IN LT AIMS IAW AMM 31-41-05. MSG CLEARED, SYS CHECKED NORMAL.