Electronic Ignition System: Notes

The electronic ignition system consists of ECM, CMP sensor, CKP sensor, ECT sensor, ignition coil, distributor, MAF sensor and TP sensor. See Figure .

Ignition system uses engine speed, engine load and throttle valve position signals to calculate ignition timing. ECT sensor signal is used to correct ignition timing when engine is cold and to activate knock sensor circuit. See KNOCK SENSOR(S) under IGNITION TIMING CONTROL.