•  Performs optimum fuel injection according to engine operation conditions.

•  The PCM determines the engine operation conditions based on the signals from the following input devices and drives the injectors at the optimum fuel injection time (fuel injection amount) and the fuel injection timing to inject fuel. For the construction/operation of the fuel injector, refer to “FUEL SYSTEM, FUEL INJECTOR CONSTRUCTION/OPERATION”.

•  Final fuel injection time is determined by the demand fuel injection amount and the fuel pressure.

•  A fuel injector relay which can provide high voltage has been adopted to drive the fuel injector which corresponds to a base high fuel pressure of 3—11.5 Mpa {31—117 kgf/cm², 435—1667 psi}.