1993 Jeep Grand Cherokee cranks but will not start

Please elaborate on "ASD relay appears to be working properly." If it is, you should have twelve volts at the ignition coil. How are you measuring this voltage? Why do you say the fuel pump is working?

This is the common and incorrect way to check things. The engine computer is going to turn on the automatic shutdown (ASD) relay for one second after turning on the ignition switch. That is why you mistakenly think you have fuel pressure. What you have to check for is if that relay turns on again during engine rotation, (cranking or running). If it does not, the fuel pump will not continue to run, and there will not be any voltage to the ignition coil, injectors or alternator field.

Measure that voltage at the ignition coil again, but see if it comes back when you crank the engine. Have you checked for diagnostic fault codes?

Code 41 an open or shorted condition detected in the generator field control circuit.

That is not related to a no-start condition.

Did you check for proper operation of the ASD relay during cranking?