Ignition timing is
controlled by the electronic control ignition timing system. The standard
reference ignition timing data for the engine operating conditions are
preprogrammed in the memory of the PCM (Power Control
Module).
The engine operating
conditions (speed, load, warm-up condition, etc.) are detected by the
various sensors. Based on these sensor signals and the ignition timing
data, signals to interrupt the primary current are sent to the PCM. The
ignition coil is activated, and timing is
controlled.
