Engine Ignition

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

• two camshaft position (CMP) sensors.
• crankshaft position (CKP) sensor.
• six ignition coil-on-plugs.
• six spark plugs.

The CMP 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 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 6 separate ignition coil-on-plugs:

• convert battery energy to high-energy output as controlled by the PCM.
• transfer the high-energy output to the spark plugs.
• are connected directly to each spark plug.
• have replaceable coil seals.

The 6 spark plugs:

• transfer high-energy coil output 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.