Engine Ignition

Engine Ignition

The Electronic Ignition (EI) system is a coil-on-plug ignition system. The coil-on-plug ignition system consists of:

- Camshaft Position (CMP) sensors.

- a Crankshaft Position (CKP) sensor.

- ignition coil-on-plugs.

- spark plugs.

The CMP (Camshaft Position) sensors:

- are variable reluctance sensors.

- are mounted in the rear of the cylinder head.

- are triggered by a 3-plus-1 timing wheel on each intake camshaft.

- provides camshaft rotational location information to the PCM.

The CKP (Crankshaft Position) sensor:

- is a variable reluctance sensor.

- is triggered by a 36-minus-1 tooth trigger wheel mounted on the crankshaft, at the rear of the engine.

- provides base timing and crankshaft speed (rpm) to the PCM.

The ignition coil-on-plugs:

- change low voltage signals from the PCM to high voltage pulses.

- produce the high voltage pulses to the spark plugs.

- are connected directly to each spark plug.

- have replaceable coil seals.

The spark plugs:

- change high voltage pulses into a spark which ignites the fuel and air mixture.

- originally equipped on the vehicle have a platinum-enhanced fine wire electrode for long life.