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WSG-1068 IGNITION SYSTEM
Ignition System - Components Location
The 6.8L engine is equipped with a coil on plug ignition
system. This system has a separate ignition coil
mounted on each spark plug. Operation of the coils is
controlled by global control platform (GCP), which
computes ignition timing based on inputs from the
electronic engine control system sensors. For additional
information on sensor inputs related to ignition control;
refer to Section 08.
The ignition coils change a supplied low voltage signal
into high voltage pulses to the spark plugs. The ignition
control module controls the low side of each coil.
The ignition system is set for base timing at 10 degrees
before top dead center (BTDC) and is not adjustable.
Refer to Specifications for firing order.
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