SRX 2WD V8-4.6L VIN A (2004)
Ignition Coil: Description and Operation
IGNITION COIL/MODULE
Each ignition coil/module has the following circuits:
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An ignition voltage circuit A ground
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An ignition control IC circuit
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A low reference circuit
The ECM controls the individual coils by transmitting timing pulses on the IC circuit of each ignition coil/module to enable a spark event.
The spark plugs are connected to each coil by a short boot. The boot contains a spring that conducts the spark energy from the coil to the spark plug. The
spark plug electrode is tipped with platinum for long wear and higher efficiency.
