An ignition coil is an important part of an inside combustion engine. The coil takes a low-voltage present from the battery and will increase it to a high-voltage present that’s required to create a spark within the spark plugs. With no functioning ignition coil, the engine will be unable to begin.
Testing an ignition coil with a multimeter includes measuring its main and secondary resistance. The first resistance is the resistance of the coil’s windings, whereas the secondary resistance is the resistance of the coil’s output terminal. The specs for the first and secondary resistance may be discovered within the automobile’s service guide.