Electronic Ignition (EI) System

The Electronic Ignition (EI) system is a Coil-On-Plug (COP) ignition system. The COP ignition system consists of the following components:
^ Crankshaft Position (CKP) sensor
^ Camshaft Position (CMP) sensor
^ ignition coils
^ spark plugs







The crankshaft position sensor:
^ is a variable reluctance sensor.
^ is mounted on the sump body under the engine.
^ is triggered by the flywheel.
^ provides base timing and crankshaft speed (rpm) to the Powertrain Control Module (PCM).







The camshaft position sensor:
^ sends the powertrain control module (PCM) a signal indicating camshaft position used for fuel synchronization.
^ indicates top dead center.







The eight separate ignition coils:
^ convert low voltage signals from the powertrain control module to high voltage pulses.
^ produce the high voltage pulses for the spark plugs.
^ are connected directly to each spark plug.

The spark plugs:
^ convert the high voltage pulse into a spark which ignites the fuel and air mixture.
^ originally installed on the vehicle have a platinum-enhanced active electrode for long life.