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Jeep Chrokee Turns But Wont Start
The on/off or scanner method will still accomplish the same thing, as long as the computer did not pick up any codes you can focus on the coil, ignition module, pickup coil/cam sensor.

The first test you will have to do is determine if the primary circuit to the ignition is triggering. To do this you will need a test light and a DVOM, hook up your test light to the negative side of the coil, with ignition off the test light should be on and with ignition on the test light should go off. Have an assistant crank the engine the test light should flicker on/off, if it doesn't flicker it means that the module is not switching or pickup/cam sensor is not giving a pulse.

If the the primary does switch then you will need to test the ignition coil. Take your DVOM and set it an ohms scale, put your leads on the primary side of the coil. The primary side should have a very low resistance reading. Switch your leads to the secondary side, the secondary should have a very high resistance (check your spec sheet) if either tests fail then replace the coil.