System Description
DESCRIPTIONThe Distributor Ignition (DI) System features a camshaft driven distributor (which uses no centrifugal or vacuum advance), an Ignition Control Module (ICM), Powertrain Control Module (PCM), and an ignition coil.
The distributor houses a Hall effect vane switch assembly that sends crankshaft position information to the ICM, where its Computer Controlled Dwell (CCD) section sets ignition dwell.
The signal is then used by the PCM for crankshaft position sensing and the computation of the desired spark advance, based on engine demand and calibration. The conditioned spark advance and voltage distribution is accomplished through a conventional rotor, cap and ignition wires.