Engine Ignition

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 (Crankshaft Position) 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 (Camshaft Position) 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.