Ignition Timing Control

Ignition timing is controlled by the ECU according to engine operating conditions. Optimum ignition timing for various driving conditions is preprogrammed and stored in the ECU. ECU receives and processes electrical signals from various sensors to determine present driving conditions. ECU will then select the optimum timing signal for the present driving conditions and send voltage signal to the power transistor to control timing advance and detonation retard operation (if equipped).