Normal Operating Condition

NORMAL OPERATING CONDITION

Description


FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)

If the engine speed is above 1,400 rpm under no load (for example, the selector lever position is neutral and engine speed is over 1,400 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed. However, if the engine speed is above 4,000 rpm, fuel will be cut off in a few seconds. Fuel cut will be operated until the engine speed reaches 1,000 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, "System Description" System Description.

TORQUE CUT CONTROL (AT HIGH ENGINE OIL TEMPERATURE)

ECM receives engine oil temperature signal from engine oil temperature sensor.
To avoid VVEL performance, ECM performs the engine torque cut control at high engine oil temperature.
If engine oil temperature is too high, engine oil viscosity will change. As a result, engine oil pressure is decreased. This control is to control the VVEL operating angle by operating the VVEL actuator sub assembly.
If this control is operated, engine performance will decrease, then maximum engine speed is reduced a little, for example.
NOTE:
If the engine oil temperature sensor is deteriorated, its characteristic will change.
In this case, the operating temperature for engine torque cut control might be decrease.
Perform Component Inspection of the engine oil temperature sensor to check for the deterioration.
Refer to "Component Inspection" P0197.