Engine Ignition

This vehicle uses a coil-on-plug electronic ignition system. The coil-on-plug ignition system consists of the following components:

• powertrain control module (PCM) (12A650)
• crankshaft position (CKP) sensor (6C315)
• ignition coil-on-plug
• spark plugs (12405)

The PCM and the CKP sensor are also part of the electronic engine controls system. For additional information, refer to ELECTRONIC ENGINE CONTROLS .

Eight separate ignition coils:

• are controlled by the powertrain control module (PCM) (12A650).
• are mounted directly above each spark plug (12405).
• are controlled by the powertrain control module for the correct firing sequence.

The spark plugs:

• change the high voltage pulse into a spark which ignites the fuel and air mixture.
• originally equipped on the vehicle have a platinum-enhanced active electrode for long life.