Chrysler Repair: 00 Stratus No Spark with No Codes, crank sensor, platinum plugs

Question
I picked up a 2000 Stratus 2.5 thinking it had a broken timing belt and that I could just swap the engine out but I have found it has what appears to be computer issues. When I first started looking at the car, I pull the front plugs and ran a compression test to see if the timing belt had broken. The car had good compression but I noticed that the plugs were fouled. I checked for spark at cyl # 2 and got a nice white arc. Thinking that the plugs were just old and fouled I replaced them with autolite double platinum plugs. The battery was dead when I picked up the car so all codes were lost but no codes appeared from cranking it over. At this point I checked the ASD to find everything in working order. Fuel pump primes, injectors pulse, and coil has power. The next step I checked the spark timing but now I have no spark. I had done nothing to the car other than clip the timing light sensor over the plug wire and I now no longer have spark! I checked the codes again and still nothing has appeared. I checked the plug wires, cap, rotor and coil (primary and secondary) resistance and all checked out. Cam sensor was also functioning properly. At this point I checked all the power, grounds, and PCM wires to the distributor. There were no voltage drops or high resistance values. While checking the crank sensor I noticed that my scanner was not reading any rpms while cranking. When I grounded the signal wire on and off with the key in the RUN position I would get an rpm reading leading me to believe the sensor to be bad. I replaced it to no avail. The rpms still do not read while cranking and there is still no spark. The ASD still is working properly and the coil still has power along with the sensors. Finally I checked the primary coil driver wire (black/gray) to see no voltage under cranking. As I understand it I should see 12v appear 3 times every revolution. I am stuck at this point. I dont know what other sensors are needed for the primary driver to function or if the PCM is just bad. The fact that the RPMS do not show under cranking makes me wonder about the PCM but the injectors still pulse so there is a signal coming in and going out. I have no idea what the next step is and any help is appreciated.

Answer
Hi Justin,
Because you don't see a pulse on the driver wire I would recheck the crankshaft sensor for pulsing. First make sure there is 8v on the orange wire to the sensor with the ignition 'on'. Then measure between the black/light blue and gray/black wires to see if you get oscillation between 5v and 0.3V three times per revolution. If so, then that should result in a driver wire pulse, similarly. If not, then I guess the PCM is not doing the job. To make those measurements you may need to use fine pins to probe through the insulation of the sensor wires. The sensor wires go to pins 44, 43, and 32 at the two pcm plugs in the order listed above so check for continuity as well.
Once you get a driver pulse you should get spark if the coil has 12v, unless there is a faulty cap or rotor or coil.
Roland