What is my next step?

What is the engine size? Check for rpm signal, comes from crank sensor. At the moment, I can't say that the crank sensor is faulty.

It's a dual crank sensor. To answer your question, possibly. The crank sensor signals go to the ignition module. The computer has to see both sensor signals or it won't start. With a single signal crank sensor, where the signal goes to the ignition module, without that signal, no spark. I'm not sure about the dual crank sensor? With dual crank sensor, if either signal is lost, the vehicle won't start.

Any applicable codes? Usually the cost of a crank sensor is no where near the cost of ignition module. I haven't priced that dual crank sensor?

At the injectors, do you have voltage?

The pink wire is voltage for injectors, fuse protected. Goes hot with the key on.

Replacing the fuse may not fix it? Could have faulty wiring circuit or injector issue?

With the key on, use a voltage tester at the fuse leg, anything/voltage? If no voltage it isn't the pcm.

Do you see the fuse in the diagram I posted? That is the one to check.

Does the starter crank?

How many times has that fuse blown? If it has blown several times, you need to find out what is causing that fuse to blow?