Engine Ignition

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

• Crankshaft Position (CKP) sensor.
• Camshaft Position (CMP) sensor.
• ignition coils.
• spark plugs.

The CKP sensor:

• is a variable reluctance sensor.
• is mounted to the lower RH side of the front cover.
• is triggered by a 36-minus-1 tooth trigger wheel mounted on the crankshaft.
• provides base timing and crankshaft speed (rpm) to the PCM.

The CMP sensor:

• is mounted on the LH side of the front cover.
• sends the PCM a signal indicating camshaft position used for fuel and spark synchronization.

The 8 separate ignition coils:

• convert low voltage signals from the PCM to high voltage pulses.
• produce the high voltage pulses for the spark plugs.
• are connected directly to each spark plug.

The spark plugs:

• convert a 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.