On some car models diagnostic fault codes related to the camshaft position sensor and crankshaft position sensor do not set just from cranking the engine. They need more time for the missing signal to be detected, as in when a stalled engine is coasting to a stop. For that reason, do not assume the sensors are working just because there is no fault code set related to them.
The first thing is to check for spark. This article shows how to do that:
https://www.2carpros.com/articles/how-to-test-an-ignition-system
Skip to about step 20, then you can use a screwdriver or piece of wire in place of the test light.
If you have spark, check for fuel pressure next. You'll need a fuel pressure gauge which you should be able to borrow from an auto parts store that rents or borrows tools. This article shows how to perform this test:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
We're only interested in the first half of these steps. We just need to know if you have fuel pressure or no fuel pressure.
If you find there is no spark, the next step is to use a scanner to see what the Engine Computer is seeing and responding to. I use a Chrysler DRB3 scanner for my vehicles. That one lists these sensors with a "No" or "Present" to indicate when those signals are showing up. If one doesn't switch to "Present" when you start cranking the engine, that is the circuit that needs to be diagnosed. Aftermarket scanners will have a similar way of indicating the status of those signals.
Feb 7, 2020 at 12:29 PM