Engine Ignition

ENGINE IGNITION

Eight separate ignition coils:
- are mounted directly above each spark plug.
- are controlled by the powertrain control module (PCM) for correct firing sequence.

The spark plug:
- changes the high voltage pulse into a spark which ignites the fuel and air mixture.
- originally equipped on the vehicle has a platinum-enhanced active electrode for long life.

Crankshaft position (CKP) sensor:

NOTE: Initial engine ignition timing is set at 10 degrees ± 2 degrees before top Dead center (BTDC) and is not adjustable.

- is a variable reluctance sensor triggered by a 36-minus-1 tooth trigger pulse wheel located on the crankshaft inside the engine front cover.

The sine wave type signal generated from the crankshaft position sensor provides two types of information:
- position of the crankshaft in 10 degree increments
- the crankshaft speed (rpm)