The 4200 I6 ignition system employs an electronic spark-control system that uses no moving parts and does not necessitate timing adjustments. This coil-on-plug system delivers a high-energy spark for a cleaner and more consistent combustion. This contributes to increased engine efficiency, improved fuel economy, and better performance, and eliminates the use of spark-plug wires. The ignition system also utilizes a crank and camshaft-position sensor for accurate engine-condition monitoring and added reliability. If one sensor fails, the engine can continue to operate, but the computer will activate the check engine light to alert the driver of a component failure.