• The vehicle identification number (VIN) registration function is used to have the VIN of the vehicle registered when a new engine electronic control unit…

• The idle-up function increases the engine idling speed when a load is applied to the engine by other system (such as air conditioner) or…

• The auxiliary brake function activates or deactivates the exhaust shutter 3-way magnetic valve according to the vehicle condition to control the exhaust brake.

• The warm-up acceleration function accelerates engine warm-up by varying the engine’s idling speed in accordance with the engine’s coolant temperature. It can operate either…

• The fuel injection pressure is calculated from the fuel injection quantity and engine speed.  

(1) Main injection timing • The main injection timing is calculated from the fuel injection quantity and engine speed. (2) Pilot injection timing (pilot interval)…

(1) Fuel injection quantity during engine startup • During engine startup, the fuel injection quantity is determined in accordance with the engine speed and coolant…

(1) Pilot injection • Pilot injection entails the injection of an extremely small amount of fuel ahead of the main injection. • Pilot injection suppresses…

(1) Operation (1.1) Injection not taking place • With the magnet not energized, the armature plate is pushed up by the valve spring such that…