Electronic Ignition System

Ignition system consists of a distributor which uses a signal rotor and pick-up coil to produce ignition pulses through the ignitor. Ignitor is located inside the distributor.

Power for ignition coil and ignitor is provided from the ignition switch. Ground circuit for ignition coil is regulated by ignitor. As rotating signal rotor passes pole piece of pick-up coil, an alternating current is produced. The ignitor uses this alternating signal to determine when to ground and open primary ignition circuit.

When ignitor opens ground circuit for primary ignition, magnetic field around ignition coil windings collapses, producing an induced high voltage surge which is used to fire the spark plugs.