Ignition timing is controlled by the electronic control ignition timing system.
The standard reference ignition timing data for the engine
operating conditions are pre-programmed in the memory of the ECM (Engine
Control Module).
The engine operating conditions (speed, load, warm-up
condition, etc.) are detected by the various sensors. Based on these
sensor signals and the ignition timing data, signals to interrupt the
primary current are sent to the ECM.
The ignition coil is activated, and timing is controlled.
Other information:
Replacement
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Put on gloves to prevent hand injuries.
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When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.
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Take care not to scratch the body surface.
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Removal
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Use fender covers to avoid damaging painted surfaces.
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To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
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Mark all wiring and hoses to avoid misconnection.
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