Engine Ignition

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
• Ignition coils
• Spark plugs

The CKP sensor:

• Is a variable reluctance sensor.
• Is triggered by a 40-minus-1 tooth trigger wheel mounted on the crankshaft.
• Provides base timing and crankshaft speed (rpm) to the powertrain control module (PCM).

The 10 separate ignition coils:

• 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.

The spark plugs:

• Change a high voltage pulse into a spark which ignites the fuel and air mixture.
• Originally equipped on the vehicle have a platinum-enhanced electrode for long life.