System Description: Description
ECM constantly monitors engine speed to protect the catalyst from excessive heat load resulting from an misfire.
ECM performs smooth running control according to the following sensors and signals.
- Pressure sensor downstream of throttle valve (Engine load)
- Intake Camshaft Position Sensor (Intake camshaft position)
- Exhaust Camshaft Position Sensor (Exhaust camshaft position)
- Engine coolant temperature sensor
- Accelerator Pedal Position Sensor (Accelerator pedal position)
- Crankshaft position sensor (Engine speeds)
- ABS actuator and electric unit (control unit) (Each wheel speed signal)
The smooth running control has functions as follows.
- Misfire detecting function
- Misfire counting function
- Factors of smooth running control