Ignition System: Description and Operation

The crankshaft position sensor:
- is a variable reluctance sensor.
- generates a CKP signal that is sent to the Powertrain Control Module (PCM) which counts this signal for engine rpm.







The ignition coil:
- changes low voltage signals from the powertrain control module to high voltage pulses.
- produces the high voltage pulses to the spark plugs.
- connects directly to the spark plug.







The camshaft position sensor:
- senses a high spot on the left camshaft sprocket.
- provides camshaft timing input to the powertrain control module.







The spark plug:
- changes 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.

The ignition system is:
- a Coil On Plug (COP) ignition system controlled by an Electronic Engine Control (EEC) integrated into the powertrain control module.
- set for base timing at 10 degrees Before Top Dead Center (BTDC) and is not adjustable.