1991 Honda Accord

IGNITION TIMING CONTROL
ECU has complete control of ignition timing. Timing is controlled in response to signals from various sensors. Input signals from TDC, CRANK and/or CYL (if equipped), throttle angle, coolant temperature, and MAP sensors are all used by ECU to determine optimum ignition timing control.
Accord
Battery voltage is supplied through ignition switch to ignition coil and ignitor unit. Ignitor, located inside distributor, triggers ignition coil based upon signal from distributor pick-up coil. When triggered, high voltage from ignition coil is distributed to each spark plug by distributor.