ELECTRONIC IGNITION SYSTEM
All models use a distributorless ignition system. See Fig. 6, Fig. 7 or Fig. 8. All models engines use an ignition coil and igniter assembly mounted on top of each spark plug.
ECM relies on signals from Camshaft Position (CMP) sensor, Throttle Position (TP) sensor, Electronically Controlled Transmission (ECT) sensor and Mass Air Flow (MAF) sensor to control ignition spark. See INPUT DEVICES. Spark is achieved by ECM triggering igniter and in turn igniter grounding and opening ignition coil circuit.