Checking the ignition coils on your Jeep Cherokee for continuity involves the use of an Ohmmeter or a voltmeter that is capable of measuring Ohms. Ohms will measure the resistance in the electrical wire and tell you whether electricity is conducting through the wire. If there is a break in the connection inside the ignition coil, the voltmeter will tell you this. At that point, you'll need to replace your Jeep's ignition coil.
Set the dial on the voltmeter to "Ohms."
Touch the red lead on the voltmeter to one of the terminals on the ignition coil (it doesn't matter which one).
Touch the black lead on the voltmeter to the other terminal on the ignition coil.
Note the readout on the voltmeter display screen. The resistance on the voltmeter should be between ".05" and "0." If it is higher than ".05," then you need to replace the ignition coil.