Fuel System Diagram
Engine Room Side
Double cab 4x2, Stretch cab 4x2 (with rear access system (except Hi-Rider))
Double cab 4x2, Stretch cab 4x2 (with rear access system), Hi-Rider
Variable Swirl Control (VSC) Outline
When driving in the low to mid-speed range, a strong lateral airflow occurs in the combustion chamber due to the closing of the VSC shutter valve, promoting a vaporization mixture of intake air and fuel and suppressing black smoke emission.
Variable Swirl Control (VSC) Block Diagram
Variable Swirl Control (VSC) Operation
The PCM energizes the VSC solenoid valve during low engine speed and vacuum is applied to the VSC shutter valve actuator to close the VSC shutter valve. When the VSC shutter valve closes, the intake air passage becomes narrower than normal due to the closing of one of the two intake air ports, which increases the intake airflow speed and creates a strong lateral airflow in the combustion chamber.
