| An ignition control module (ICM) is a computer that controls the ignition coil or the ignition coil's firing time. The ignition control module is the heart of an automobile's ignition system, because it regulates spark generation within the engine. The ignition control module relies on the car battery to provide the 'spark' that sets the ignition system in motion and then ultimately turns on the vehicle. In other words, a car's ignition has the job of taking the 12V of battery within the car, and using it to generate a high voltage that can then be sent to spark plugs, which start the vehicle. The ignition control module is normally located on the driver wheel tub in the engine bay. |
