Overheat Protection Function

The overheat protection function protect the engine and catalyst from damage caused by overload heat.

The overheat protection function performs following controls.

• Characteristics map-dependent ignition timing adjustment towards retard angle direction, as of a coolant temperature at approximately 90°C (194°F) and the ambient temperature at 20°C (68°F)
• Reduced opening of the throttle valve actuator
• Shortening of the injection time of the fuel injectors according to the lower air mass
• Full opening of the ball rotary valve in coolant thermostat