2-5
TECH
FEA
Technical features and description
Digital ignition control
In digital ignition control, the engine ECM determines the optimum ignition timing according to the
signals from the sensors and sends the primary current to the ignition coils. According to the engine
operating conditions, the basic ignition timing and ignition coil energization time are determined. In
addition, various restrictions and compensations are made to determine the actual ignition timing.
The ignition timing is also controlled according to the knock control. See “Knock control” (2-7).
Pulser coil
Cam position sensor
(PORT EX)
Cam position sensor
(PORT IN)
Cam position sensor
(STBD IN)
APS
TPS
Air pressure sensor
Air temperature sensor
Battery
Engine
ECM
Ignition coil
Knock sensor
Shift cut switch
Engine shut-off switch
Engine start switch
Engine temperature sensor
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