Fuel Pump Control System - MV Agusta Brutale 990 R Workshop Manual

FUEL PUMP CONTROL SYSTEM

At the moment of KEYON, the system and the engine control unit are powered; once the condition of the relati-
ve inputs have been checked, it activates the injection relay, feeding the petrol pump for a pre-set time, thus
allowing the power circuit to be put under pressure.
If the drive shaft is made to rotate by activating the starter either during or after this time, the engine rotation signal
is sent to the ECU which allows the pump to work continuously by controlling the pump relay.
During this phase, it must be remembered that the possibility to activate the engine depends on a logic of inter-
nal safety which, in relation to the inputs of the gear sensor, the side-stand sensor and the clutch sensor, may or
may not allow the starter to be activated.
When the RUN/STOP switch is in the OFF position, the control unit receives the command to interrupt the power
supply to the pump relay; at the same time, it also receives the command for the injectors and the ignition coils,
causing the engine to be switched off.
NEUTRAL
SWITCH
THROTTLE
BODY
Air intake injection system
KEY SWITCH
CLUTCH
SWITCH
PLUG-TOP
COILS
SAFETY SWITCH
PICK-UP
WHEEL
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SOLENOID
STARTER
BATTERY
SIDE STAND SWITCH
D