Fuel Injectors
Each fuel injector is independently controlled by the control unit. This enables the control unit to precisely meter the injected fuel quantity and provides a faster response time during engine load changes. After engine has started (at about 600 RPM), fuel is injected into each specific cylinder at intervals of 120 degrees (crankshaft).
The control unit can also turn off fuel injectors as part of its catalytic converter protection function. See IGNITION TIMING CONTROL under DIRECT IGNITION SYSTEM (DIS) for additional information.