Vehicle Specific Ignition System

The ignition system Consists of the following:
^ ignition Coil
^ ignition wire and bracket
^ spark plugs
^ Crankshaft Position (CKP) sensor

The ignition system is:
^ an Electronic Distributorless Ignition System (EDIS) controlled by an Electronic Engine Control (EEC) integrated into the Powertrain Control Module (PCM).
^ set at 10 degrees before Top Dead Center (BTDC) for base timing and it is not adjustable.

The Ignition Coil:
^ changes low voltage pulses from the powertrain control module to high voltage pulses.
^ sends high voltage pulses to the spark plugs through the spark plug wires.
^ has three transformers.
^ has six spark plug wires, one to each end of each transformer.
^ is mounted on top of the intake manifold.

Spark plug wires carry high voltage pulses from the ignition coil to the spark plugs.

The Spark Plugs:
^ change high voltage pulses to spark at gap which ignites fuel and air mixture.
^ have a platinum-enhanced active electrode for long life. The active electrode is different for LH and RH sides.







Production spark plugs on the RH side (cylinders 1, 2 and 3) spark plugs are AGSF-34EG.







Production spark plugs on the LH side (cylinders 4, 5 and 6) are AGSF-34E.

New spark plugs are AGSF-34EE; the electrodes are platinum-enhanced and can be installed as either a RH or LH spark plug.

The Crankshaft Position Sensor:
^ is a variable-reluctance sensor.
^ senses a missing tooth on the crankshaft damper pulse ring.
^ generates a crankshaft position signal which is sent to the powertrain control module. The powertrain control module counts this signal for engine rpm and spark advance.
^ For removal and installation of the crankshaft position sensor, refer to Computers and Control Systems.