Circuit Description

Battery voltage is supplied to ignition coil when ignition switch is in RUN or START position. Ignition control module toggles primary winding of ignition coil in order to induce a high voltage in the secondary windings of ignition coil. PCM commands ignition control module based on numerous inputs, including camshaft position sensor. High voltage induced in secondary windings of ignition coil is applied through distributor cap and rotor to spark plugs.