OK. This is where we are with this issue: PCM says there is no crank signal; your scan tool says the same; you say reluctor is fine.
What does that leave us: possible faulty crank sensor, possible open circuit in sensor or PCM connector, possible open circuit in harness from sensor to PCM, possible faulty PCM.
How do we find out: we start by checking whether or not the signal is getting to the PCM at the White/Black wire going to PCM connector X2 terminal 68. If the signal is getting there, then the PCM must be bad. If the signal is not getting there, then we go back to the crank sensor connector and test there. If the signal still isn't there, either the crank senosr itself is bad or it is not being triggered by the reluctor ring.
What tools do we use to test the signal: best tool is a scope; second best is a voltmeter that can read frequency in Hertz (Hz). Don't have either one? How about rigging a Noid light?
In other words, my friend, I have the technical knowledge and experience to help you diagnose this issue and most of all, I really really want to help you, but it is up to you to get the tools you need to do this.