Table of Contents
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Ignition control system
The ignition control system controls the ignition to the optimum timing. There are two types: fixed ignition and soft igni-
tion.
Fixed ignition
When the following conditions are met, the ignition timing
Condition for execution: Either of the following
Other than the above, the soft ignition is used.
Soft ignition control
The soft ignition control has two phases: ignition timing control (ignition advance control) and current flow time control.
(2) Ignition timing control
The ignition advance is calculated by using the following equation.
Ignition advance=Basic advance + Cooling water temperature compensation advance
+ idle stabilizing compensation advance
Each of the above advances is described below.
Basic advance How much the basic advance is controlled depends on the conditions of the idle switch.
When the idle switch is ON
The basic advance is set according to the engine speed.
24
when engine speed is below 5OOrpm
when microcomputer fails.
is fixed to the initial set position of the
crank angle signal.
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Table of Contents
Troubleshooting
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