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:

- Camshaft Position (CMP) sensor.
- Crankshaft Position (CKP) sensor.
- coil on plug.
- spark plugs.

The CMP sensor:

- is a Hall-effect sensor.
- is mounted in the valve cover.
- provides camshaft rotational location information to the PCM.

The CKP sensor:

- is a variable reluctance sensor.
- is mounted on the engine front cover.
- is triggered by a 36-minus-1 tooth trigger wheel located on the crankshaft pulley and damper.
- provides ignition timing and crankshaft speed (rpm) to the PCM.

The 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 boots.

The spark plug:

- ignites the fuel and air mixture.