System Sensors LG1; LGX

• Intake air temperature sensor - situated underneath the inlet manifold. As the density of the air changes with temperature, the amount of oxygen available to ignite the fuel also changes. 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 at the rear of the battery tray under the seat. The ambient air pressure sensor measures atmospheric air pressure. With this information, the amount of fuel per injection is adjusted to suit the prevailing conditions.

• Manifold Absolute Pressure (MAP) sensor - situated to the left of the airbox, connected to the throttle body a hose. The MAP sensor provides information to the engine ECM which is used at shallow throttle angles (very small throttle openings) to provide accurate engine load indications to the ECM. This degree of engine load accuracy allows the ECM to make very small adjustments to fuel and ignition which would otherwise not be possible from throttle angle data alone.

• Clutch switch - situated on the clutch lever. The clutch must be pulled in for the starter motor to operate.

• Crankshaft position sensor - situated in the alternator cover. The crankshaft position sensor detects movement of teeth attached to the alternator rotor. The teeth give a reference point from which the actual crankshaft position is calculated. The crankshaft position sensor information is used by the engine ECM to determine engine speed and crankshaft position in relation to the point where fuel is injected and ignition of the fuel occurs.

• Engine coolant temperature sensor - situated at the rear of the cylinder head near the thermostat housing. Coolant temperature information, received by the engine ECM, is used to optimise fueling at all engine temperatures and to calculate hot and cold start fueling requirements.

• Oxygen sensor - situated in the exhaust header pipe system upstream of the catalytic converter. The oxygen sensor constantly feeds information to the engine ECM on the content of the exhaust gases. Based on this information, adjustments to air/fuel ratio are made.

• Side stand switch - situated on the gear change bracket. If the side stand is in the down position, the engine will not run unless the transmission is in neutral.

• Fall detection switch - situated under the rider’s seat, forward of the fuse box. The fall detection switch will detect if the motorcycle is on its side and will cut power to the engine ECM immediately. This prevents the engine from running and the fuel pump from delivering fuel. In the event of a fall, the switch is reset by returning the bike to an upright position and switching the ignition off then back on again.

• Gear position sensor - situated in the lower crankcase, above the drive chain front sprocket. The gear position sensor provides the engine ECM with selected gear information. This is used to prevent the engine from starting if the transmission is in gear. The sensor also provides information to the neutral lamp in the instruments.