•  The fuel injector is composed of: a valve control plunger that controls the nozzle, a control chamber with an inflow/outflow orifice, and an solenoid valve coil that controls the inflow/outflow of fuel to the control chamber via an on/off function.

•  The valve control plunger is connected to the nozzle so that the up and down movement of the plunger results in the opening and closing of the nozzle.

•  The control chamber contains a single orifice plate to provide an inflow and outflow path.

•  Because the fuel injector corrects the deviation of the fuel injection amount caused by the difference in mechanical characteristics, if the fuel injector or the PCM is replaced, the injector calibration code (rank number) programming in the PCM is required.

•  This is done by inputting the eight digit fuel injector calibration code (or fuel injector calibration bar code) into the PCM by means of Mazda Modular Diagnostic System (M-MDS) and taking into account the corresponding cylinder.

•  It is not necessary to configure the 9th and 10th digit (A0: WL-C engine, B0: WE-C engine) of the fuel injector calibration code as it is the fuel injector grade identification code.

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