2004 Poalaris MSX110, MSX150 PWC Original Service Manual, Page 126Get this manual
FUEL INJECTIONIGNITIONEXHAUST SYSTEMS Bosch MEMotronic 7.4.4 Engine Management System
The Bosch engine management system implements the engine's operational status inline with the operator's demandsThe microprocessor responds to this demand by translating the throttle flipper travel into specified engine outputThe Engine Control Unit (ECU) is responsible for controlling and monitoring the density of each cylinders' air charges, the mass of injected fuel, and ignition timingIn order to accomplish these tasks, the ECU relies on the following sensors and feedback systems: Throttle Flipper Position (PPU) Electronic Throttle Body Position (ETB) Lambda Sensor (O2 Sensor) Cam Phase Sensor Engine Speed Sensor (Crankshaft Position Sensor) Engine Coolant Sensor Knock Sensor Manifold Pressure Sensor Boost PressureAir TempSensor Battery Voltage The ECU has direct control over the following components: Fuel Injectors Ignition Coils Electronic Wastegate Solenoid Electronic Throttle Body DC Motor (ETB) Fuel Pump and Main Relay O2 Sensor Heating Element