An ignition system is located in an internal combustion engine that ignites the fuel/air mixture in the engine’s combustion chamber. The ignition system consists of a spark plug, an ignition coil, and an ignition control module. When the engine is started, the ignition control module relays a signal to the ignition coil. The coil produces a high-voltage spark that is sent to the spark plug. Then, the spark plug ignites the fuel/air mixture in the combustion chamber, causing the engine to start.