Engine Ignition

Engine Ignition


Electronic Ignition (EI) System

The Electronic Ignition (EI) system consists of:

- Eight ignition coils.
- Eight spark plugs.
- Crankshaft Position (CKP) sensor.

The EI system is a coil-on-plug ignition system which uses one ignition coil for each cylinder attached to the spark plug. The PCM receives a signal from the CKP sensor and sends low voltage signals to each of the ignition coils. The ignition coils turn low voltage signals into high voltage pulses which are passed through the spark plugs to ignite the compressed fuel and air mixture.


Crankshaft Position (CKP) Sensor

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 PCM.

For removal and installation, refer to Computers and Control Systems Information.


Ignition Coils

The 8 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.

For removal and installation, refer to Ignition Coil-On-Plug Ignition Coil-On-Plug.


Spark Plugs

The 8 spark plugs:

- change a high voltage pulse into a spark, which ignites the fuel and air mixture.

For removal and installation, refer to Spark Plugs Spark Plugs.