Calibration of an FNR lever, wherein signal outputs as the FNR lever is transitioned to and from the neutral position and through a range of positions, are determined. It is then determined whether the values are within expected norms. If not, a fault condition exists. The operator is also prompted to input acknowledgments when the FNR lever is at the fully rearward and forward positions. Signal values outputted by a neutral switch are sensed when the lever is initially moved to the neutral position, and at a predetermined time thereafter, to test a propulsion enable or latch relay which is to provide a predetermined output for a predetermined time after the lever moves into the neutral position, for transitioning of the system to neutral operation.