Step 1:Use a wrench to loosen the bolt on the negative battery cable and set the cable aside in a spot that will not allow it to touch the battery while you are working.
Step 2:Locate the coil on your vehicle. Remove the center wire that runs from the coil to the distributor, then remove any wires connected to the positive and negative terminals on the coil with a wrench. On older-style coils these will be posts on the top of the coil. Newer systems using coil packs that require you to unplug the wiring harness connector and use the pins in the connector for your points of contact.
Step 3:Place the first test lead from your ohmmeter on the negative terminal and the other on the positive terminal. Read the resistance across the terminals from the meter. You are looking for a range between 0.70 and 1.7 ohms. Anything outside that range indicates a defective coil.
Step 4:Move one of the test leads from the side terminal to the high-tension terminal in the center of th