What was found
FLIGHT 430: PHL - LAS - DURING CRUISE AT FL340, ECAM MESSAGE. ENGINE NR 1 FUEL CONTROL FAULT APPEARED ON ECAM. NR 1 ENG THRUST HAD RETARDED TO IDLE, ALL OTHER PARAMETERS NORMAL. ECAM MESSAGE ENG FAIL APPEARED AND ENGINE SHUT DOWN. ACCOMPLISHED ENG NR 1 RELIGHT AT APPROXIMATELY FL220 AND REGAINED NORMAL THRUST CONTROL. THE CREW DIVERTED TO DTW. ENGINE OPERATED NORMAL DURING LANDING. FADAC INTERROGATION SHOWED BOTH CHANNELS OF FMU HAD FAULTED. MX REPLACED THE NR 1 FUEL-METERING UNIT. MX PERFORMED A POWER ASSURANCE RUN, OPS CHECK WAS GOOD. AIRMAN HAD ISSUED A FUP FOR TROUBLESHOOTING A SINGLE CHANNEL FMU PROBLEM. THE FUP WAS STILL OPEN WHEN EVENT OCCURRED.