Ignition System: Description and Operation

In a conventional vehicle, the ignition coil produces a high voltage current which the distributor applies to each spark plug at the required time.
The SEPHIA, however, uses a totally new ignition system. In this system two sensors (the camshaft position sensor and the crankshaft position sensor) indicate to the Engine Control Module (ECM) which cylinder is ready to fire. The ECM then sends an ignition signal to an electronic ignition coil. This ignition coil then produces and sends a high voltage current to the proper spark plug.