You can check the crank sensor with a AC volt meter, these sensors are a coil of wire wrapped around a core / magnet. I "think" that 2 VAC at cranking speed is good.

Can also check with a Ohm meter, not sure what it should read but I'd expect ~ 800 Ohm?

If you have a wiring diagram, you can check for signal at the ECM connector.

Also, if you lose crank signal, you won't have injector pulse either.