VARIABLE SWIRL SYSTEM OPERATION [L3 Turbo]

Engine speed is less than 3,250 rpm and engine coolant temperature is less than 60°C {140°F} (variable swirl shutter valve is closed)

• Intake manifold vacuum is applied to the variable swirl shutter valve actuator by the operation of the variable swirl solenoid valve, closing the variable swirl shutter valve. At this time, the intake passage is narrower than normal, increasing intake airflow speed and also creating a powerful air swirl in the combustion chamber.