Not short of (maybe) a scope. The injector drivers are N-channel transistors that are "open collector", meaning they can pull ground on the injector but they can't push any voltage. The trouble with that is, it's impossible to distinguish whether the transistor is blown or the ECM simply isn't firing it. Blown transistors will sometimes still pull a small amount of current and cause a telltale voltage fluctuation, but it will likely be so small that catching it with a VOM will be hopeless. Only a lab scope would show it up.