Service manual

06-2
The Classic 500 is fitted with an intelligent Engine Management System (EMS).
It consists of an Electronic Control Unit (ECU) which constantly takes inputs like en-
gine speed, engine temperature, throttle position, manifold air pressure, exhaust oxy-
gen feed back etc, from the respective sensors, provided in the vehicle and determines
both the ignition timing and the ideal amount of fuel to be injected, to optimize the air-
fuel ratio.
THE BENEFITS OF EMS ARE :
✰ Good acceleration.
✰ Sustained high speed cruising and driveability.
✰ Low exhaust emission.
✰ Excellent cold starting ability.
✰ Better fuel economy.
ENGINE MANAGEMENT SYSTEM - FUNCTIONAL DIAGRAM
Engine Management System (EMS)