No spark...no injector pulse. Hope I have this right. Crank sensor to ignition module to ECM. I'd swap one at a time in that order. You have FAST instead of the ECM...so we'll likely need one of the guys experienced with that.
I'd be checking to make sure the ignition module is getting power. If all these checks didn't work...then I'd consult Steves no start tree. Takes time with the checks...but you'll eventually nail it down.
Here'e the guide
No start - no spark, has injector pulse - Check the ignition module (also check the CCCI and ECM-IGN fuses)
No start - has spark, no injector pulse - Cam Sensor or ECM
No start - no spark or injector pulse - Crank sensor or module
The logic behind this is During iniital cranking the IGN module fires the plug so it's the driver for the plugs. Once the ENgine goes over 400 RPM it goes into bypass and the ECM controls timing. The Crank sensor is the critical timing interface.
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