Service Manual — page 139 of 715

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FUEL SYSTEM (DFI) 3-49
Self-Diagnosis
Note:
 (1): D-J Method: When the engine load is light like at idling or low speed, the ECU determines the
      injection quantity by calculating from the throttle vacuum (vacuum sensor output voltage) and
      engine speed (crankshaft sensor output voltage). This method is called D-J method.
 (2): α-N Method: As the engine speed increases, and the engine load turns middle to heavy, the
      ECU determines the injection quantity by calculating from the throttle opening (throttle sensor
      output voltage) and the engine speed. This method is called α-N method.
   *: This depends on the number of stopped cylinders.