Ignition System: Description
WARNING: This page is about a different car, the 2014 Volkswagen Routan, 2013 Volkswagen Routan, 2012 Volkswagen Routan, and 2011 Volkswagen Routan. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
All engines use a fixed ignition timing system. Basic ignition timing is not adjustable. All spark advance is determined by the Powertrain Control Module (PCM).
The ignition system used on these engines is referred to as coil on plug. The system's four main components are the coils, crankshaft position sensor, spark plugs, and camshaft position sensors. The coil on plug ignition system utilizes an ignition coil for every cylinder. The ignition coils are mounted directly over the each spark plug.