Jeep 56041476AA Ignition Coil Ignition

To check and replace the ignition coil on models except for 2000 and later inline six-cylinder models, follow these steps, start by detaching the negative battery cable. Locate the ignition coil, typically found on the right side of the engine compartment. If needed, remove the coil by unscrewing the mounting bracket bolts. If the coil is not removed, disconnect the wires from the high voltage and primary terminals of the coil. Use an ohmmeter set on the high resistance scale to perform resistance tests. Test the primary terminal to ground, which should indicate infinite resistance. Test the positive primary terminal to the negative terminal, which should indicate zero or close to zero resistance. Test the negative primary terminal to the high voltage terminal, which should not indicate infinite resistance. Replace the coil if any of these tests fail. For replacement,if not. Note that the entire assembly must be replaced if only one coil is defective. For replacement, remove the ignition coil rail assembly mounting bolts, carefully work the spark plug boots off the spark plugs, and disconnect the electrical connector from the coil rail. Then, remove the ignition coil rail assembly, and when installing the new one, make sure all spark plug boots are properly seated over the spark plugs. Secure the assembly with the mounting bolts, reconnect the electrical connector, and ensure it's locked in place.

To replace the ignition coil on 2000 through 2006 four-cylinder and 2007 through 2011 models, locate the coil pack and mark the spark plug wires if necessary. Remove the air intake duct on four-cylinder models, then disconnect the wires from the coil pack and remove the mounting bolts. Detach the coil from its bracket and reverse the steps for installation.

Place it in a bench vise.