To be a bit more specific, you should:
Make sure all 6 (3.9L V6) or all 8 cylinders are getting spark with a spark tester.
If spark was present in all of the cylinders, then this result tells you several very important things:
The distributor cap, distributor rotor, and the spark plug wires are OK.
The ignition coil is OK and functioning correctly.
The crankshaft (crank) position sensor is functioning correctly.
The Auto Shut Down (ASD) relay, which powers the ignition coil, is good.
NOTE: One of the most common failures on these Dodge vehicles is a bad crank sensor causing a no start condition. Since the crank sensor is at the heart of everything that is involved with starting the vehicle. When the crank sensor has failed you'll see the following specific symptoms:
The PCM will not activate the fuel injectors.
The PCM will not activate the ASD (Auto Shut Down relay).
If the ASD relay does not activate, the ignition coil will not get power.
If the ASD relay does not activate, the fuel pump relay will not activate.
More here if you care to puruse. Code scan would also help isolate.
https://troubleshootmyvehicle.com/chrysler/3.9L-5.2L-5.9L/how-to-test-a-no-start-2
