Engine Ignition
E176727
2
1
Ignition coil-on-plug(s)
1
Spark plug(s)
2
E220120
The ignition system ignites the compressed air and fuel
mixture in the engine's combustion chamber using a
high voltage spark delivered from an ignition coil. The
ignition coil is controlled by the PCM.
The ignition system fitted to this engine is referred to a
COP (coil on plug) type, where each spark plug has its
own ignition coil. COP ignition coils eliminate the need
for secondary spark plug wires which improves ignition
spark reliability.
The ignition system uses a 3 wire COP type ignition
coil. This means the coil driver is integrated in the COP
assembly. This configuration eliminates the need for
high current circuits from the PCM to the COP.
NOTE: Electronic ignition engine timing is controlled
by the PCM and is not adjustable. Do not attempt to
check base timing as a false reading will be obtained.
The integrated electronic ignition system consists of a
Crankshaft Position (CKP) sensor, Camshaft Position
(CMP) sensor, COP, connecting wiring, and PCM.
45
Service Training
(G1821761)
Engine Ignition
Lesson 3 – Powertrain
