Wire Chafing Issues:
A variety of driveability issues can arise from chafing/shorting wiring, such as crank/no-start, stall, running rough, misfire, buck/jerk or lack of power. The most common location for this is the valve cover/cover bolts near the FICM or the intake manifold bolts where the harness routes under the air intake hose. The harness should be rerouted and any chafe points insulated with rubber vacuum caps. Other chafe problems can occur where the sensor harnesses route around the valve covers, thermostat housing, idler pulleys, glow plug relay bracket, and near the accelerator pedal assembly (adjustable pedals), and also near the PCM by the battery and near the relay box brackets at the left rear corner of the engine compartment. On Econolines, also inspect at the top edge of the computer, along the oil dipstick tube bracket and auxiliary A/C lines. Broadcast Messages 1407 and 3077....
JMO, but i still don`t think the FICM is the problem, your values are too good....with the po284 code, that is leading to injector failure(you may have more, which will result in a no start too)....with not being able to an injector buzz test, that is a problem. check your wiring, connectios and all fuses....