Data also revealed that the fuel metering valves on both engines correctly moved to the fully open position to schedule an increase in fuel flow. Both fuel metering units were tested and examined, and revealed no pre-existing defects.
The FMU position is displayed on the EPCS maint. page 1. It is displayed in degrees. It is also recorded on the QAR/FDR.
The EEC commands the FMU Fuel Metering Valve to a certain position and a feedback resolver on the metering valve sends a signal back to the EEC (closed loop).
I
assume the "FMV" position data shown on the EICAS EPCS page is from the feedback (Torque resolver) rather than the EEC command.