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Twist grip position sensor
The twist grip position sensor is used to relay twist grip position information to the
engine ECM. The engine ECM uses this information to drive the throttle actuation motor
to the correct position.
Transponder
A transponder-responder chip located in the ignition key. The transponder is activated
by a radio signal sent out by the immobiliser control module, via an antenna located
around the ignition switch. If the immobiliser control module does not receive the
correct code signal from the transponder, the immobiliser will remain active and the
engine will not start.
Engine Management System
System Description
This model is fitted with an electronic engine management system which encompasses
control of both ignition and fuel delivery. The engine electronic control module (ECM)
draws information from sensors positioned around the engine, cooling and air intake
systems and precisely calculates ignition advance and fueling requirements for all engine
speeds and loads.
In addition, the system has an on-board diagnostic function. For additional information,
see System Diagnostics.
System Sensors
• Intake air temperature sensor - situated on the rear of the airbox plenum. As
the density of the air changes with temperature (therefore the amount of oxygen
available to ignite the fuel), an intake air temperature sensor is fitted. Changes in
air temperature are compensated for by adjusting the amount of fuel injected to a
level consistent with clean combustion and low emissions.
• Ambient air pressure sensor - situated on the on the engine electronic control
module bracket under the rider's seat. The ambient air pressure sensor measures
atmospheric air pressure. With this information, the amount of fuel per injection is
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