It is important that the engine remains cold during checks on the ignition coil assembly as resistance readings can vary while the engine is hot. For 1994 and 1995 2.4L DOHC models, disconnect the electrical connector at the coil assembly. Tag and disconnect the spark plug wires. Unbolt and remove the coil assembly. Measure the primary resistance between terminal 3 and each of the other two terminals, using an ohmmeter. Note the resistance and compare to specifications. If incorrect, replace coil assembly. Subsequently, take the secondary resistance between high-tension terminals for spark plugs 1 and 4 and then for terminals 2 and 3 and compare the results with specified values. After the installation, reconnect the electrical connector of the coil and the spark plug wires. For a 1994 through 1998 2.4L SOHC model, first disconnect the electrical connector from the distributor. Next measure the primary resistance between connector terminals 11 and 12. If this has not gone to specification, replace the distributor. Check the secondary resistance from the coil high-tension terminal to the connector terminal 11 or 12 and change the distributor if necessary. For the 1999 and later 3.0L V6 models, unclip the electrical connector from the distributor, then using an ohmmeter, measure the primary resistance between the connector terminals one and two. If not specified, replace the distributor. Next measure the secondary resistance between the coil high-tension terminal and connector terminal one. For 1999 and later 2.4L SOHC models, unclip the electrical connector from the ignition coil assembly. First, check the primary coil resistance by wiring an ohmmeter between terminal one and two while powering terminals two and three from a 1.5-volt battery. Ensure continuity when powered and none when opened. If the resistance is not as specified, replace the coil. You have to measure between two high tension terminals to check secondary resistance. If reading is incorrect, the coil is to be replaced. To replace the ignition coil, begin by disconnecting the negative battery terminal. Next, for a 1994 and 1995 2.4L DOHC models, disconnect the ignition coil assembly connector, label and unclip the spark plug wires, remove the mounting bolts securing the ignition coil, and finally pull out the coil pack. For models from 1994 to 1998 with a 2.4L SOHC engine and for the models from 1999 with a 3.0L V6 engine, replacing the distributor is the solution, since you cannot service the coil. For the 1999 and later 2.4L SOHC models, you must first pull the electrical connector that connects the coil assembly, label and pull off the spark plug wire for the companion cylinder, remove the securing bolts, and then reinstall in the reverse order.