What was found
LEFT WING FUEL QUANTITY WILL RAPIDLY INCREASE IN INDICATED AMOUNT. THIS LARGE INCREASE CREATES A FUEL IMBALANCE AMBER CAS MESSAGE, AND THE AUTO TRANSFER SYSTEM WILL ATTEMPT TO TRANSFER FUEL FROM THE PERCEIVED HEAVY LEFT WING TO THE RIGHT WING, CREATING AN ACTUAL FUEL IMBALANCE. POWERED ON AIRCRAFT AND FOUND NO FAULT PRESENT, BOTH FUEL TANKS INDICATING PROPERLY. / ON AIRCRAFT OMS CHECKED FUEL QUANTITY PROBE CONNECTIONS TO FMQGC, ALL PROBES GOOD ON OMS. RAN ENGINES, NO DEFECTS NOTED. FOLLOWED FDE CODE: 2841FMQS00032 FIM, COMPLETED FIM TASK WITH NO DEFECTS NOTED. WE SUMPED TANKS AND CHECKED FOR WATER CONTAMINATION IAW GL-5500 AMM 28-10-00, NO WATER FOUND. OPS CHECK IS GOOD