PCM [SKYACTIV-X 2.0]

Function	Description
Main relay control	• Supplies power to each part by switching the main relay on/off at the optimal timing according to the vehicle conditions.
Drive-by-wire control	• Calculates the optimum target throttle valve opening angle and controls the throttle valve actuator which allows the driver to drive the vehicle at will. • The drive-by-wire control is composed of the idle air control, accelerator control, traction control, excess engine speed control, overspeed control, electric variable valve timing cooperation control, brake override system, engine oil temperature control, EGR control, supercharger control.
Electric variable valve timing control	• The PCM determines the optimum valve timing for the engine operation conditions and sends the motor drive signals to the electric variable valve timing driver. • With the adoption of electric drive on the exhaust side, variable control of valve timing coordinated with the intake side is performed unaffected by the engine conditions, achieving improved fuel economy and reduced pumping loss.
Fuel injection control	• Performs optimum fuel injection according to engine operation conditions. • The PCM determines the engine operation conditions based on the signals from each input device and drives the fuel injectors at the optimal fuel injection time (fuel injection amount) and the fuel injection timing to inject fuel. • Optimally controls combustion based on fuel injection amount, fuel injection timing, number of fuel injections, and the fuel pressure to achieve emission performance improvement and higher engine output.
Exhaust shutter valve control	• The PCM controls the exhaust shutter valve when burning a lean air-fuel mixture. • The valve is controlled variably according to the engine conditions to create optimum conditions inside the cylinder for burning a lean air-fuel mixture.
Electric water pump control	• The PCM sends a duty signal to the electric water pump according to the engine operation conditions to adjust the cooling performance of the water-cooled charge air cooler.
Fuel pump control	• By switching the fuel pump discharge amount, reduced power consumption and improved fuel economy have been achieved. • The PCM determines the optimum fuel pump discharge amount according to the engine operation conditions, and sends the fuel pump drive signal to the fuel pump control module.
High pressure fuel pump control	• Changes the fuel pressure applied to the fuel injector according to engine operation conditions to improve engine output and startability. • The PCM determines the fuel pressure value corresponding to the engine operation conditions based on each input signal, and drives the spill valve control solenoid valve for optimum control of fuel pressure.
Electronic spark advance	• Controls ignition to optimum timing according to engine operation conditions. • Serviceability has been improved by eliminating the necessity of ignition timing adjustment. • The PCM determines the engine operation conditions based on input signals from each sensor and blocks current to the ignition coils at the calculated ignition timing, causing the spark plugs to discharge (ignite) by the effect of electromagnetic mutual induction.
EGR control	• To recirculate an optimum amount of exhaust gas to the combustion chamber according to the engine operation conditions, the PCM controls the EGR valve to open and close the valve.
Purge control	• By performing the purge control according to the engine operation conditions, an appropriate amount of evaporative gas is introduced into the supercharger to prevent release of evaporative gas into the atmosphere while ensuring drivability. • The PCM drives the purge solenoid valve based on the signal from each control part.
A/F sensor heater control	• Based on the control of the A/F sensor heater, a stabilized oxygen concentration is detected even at low exhaust temperatures, and feedback control of fuel injection even at cold engine start is made possible for improved cold temperature exhaust emission performance. • Both emission performance and sensor protection have been improved by duty control of the heater according to engine operation conditions (exhaust gas temperature).
HO2S heater control	• Based on the control of the HO2S heater, a stabilized oxygen concentration is detected even at low exhaust temperatures, and feedback control of fuel injection even at cold engine start is made possible for improved cold temperature exhaust emission performance. • Both emission performance and sensor protection have been improved by duty control of the heater according to engine operation conditions (exhaust gas temperature)
A/C cut-off control	• To improve drive performance and A/C compressor reliability, the A/C relay is turned off at the appropriate timing according to the engine operation conditions, and the A/C operation is controlled.
Electrical fan control	• Engine reliability and cooling performance have been improved through cooling of the radiator and condenser by operation of the cooling fan according to vehicle conditions.
Starter cut-off control	• The PCM controls energization to the starter relay according to an immobilizer system request to improve security. • While not in P or N position, the starter relay energization by the ignition key is inhibited.
Integrated starter generator (ISG)control	• Idling stability has been assured by optimum power generation amount of the ISG according to the engine operation and electrical load conditions. • The PCM controls the variable torque type ISG so that the driver does not feel a difference in the deceleration from the power generation torque produced during deceleration.
i-stop control	• When the vehicle is stopped such as at a stop light, the i-stop control stops/starts the engine automatically to improve fuel economy and reduce exhaust gas and idling noise. • The PCM determines whether to permit/inhibit i-stop control based on the signal from each input part and CAN communication. • The i-stop control includes the engine stop control, engine restart control, electric AT oil pump driver control, and hill launch assist functions.
Engine oil variable control	• To reduce the oil pump operation load applied to the engine, the PCM adjusts the engine hydraulic pressure to the appropriate pressure according to the engine operation conditions. • The PCM performs duty control of the engine oil solenoid valve to variably adjust the engine oil discharged from the oil pump.
Water flow control	• The PCM controls the coolant switching valve and the electric thermostat according to the vehicle conditions and the engine coolant temperature. • By blocking each water passage before the engine warms up, and suppressing heat radiation, the temperature of the internal wall of the cylinder is quickly increased to improve fuel economy.
AWD control	• An electronically controlled AWD system (i-ACTIV AWD) has been adopted which controls the distribution of the drive torque for the front and rear wheels automatically and optimally, for improved road handling ability, steering stability, and fuel economy. • The PCM determines the driving conditions or road conditions by each input signal and the ESU controls the output current to the electronic control coupling (AWD solenoid) inside the rear differential for optimum distribution of the drive torque from the engine to the rear wheels. • The load on the driver is reduced and operability is improved by the PCM automatically performing the AWD control.
Fresh-air duct control^*	• The engine intake air passage is switched by opening/closing the fresh-air duct valve. • By switching the intake air passage according to the engine operating conditions and optimizing the temperature inside the cylinder, improved fuel economy is achieved.
Supercharger control	• The supercharger clutch is switched on/off according to the engine operation conditions to achieve optimum boost pressure.
Swirl control	• The air flow in the cylinder is adjusted by opening/closing the swirl control valve. • Optimum air flow is created in the cylinder according to the engine operation conditions, improving fuel economy.
Air bypass control	• The boost pressure in the intake manifold is adjusted by opening/closing the air bypass valve. • Optimum boost pressure is achieved according to the engine operation conditions, improving the engine output.
Gasoline particulate filter regeneration control	• Particulate matter (PM) in the gasoline particulate filter is eliminated during deceleration fuel-cut. • If the amount of accumulated PM exceeds the specified value, the PCM turns on the gasoline particulate filter warning indication/warning light and performs automatic gasoline particulate filter regeneration control to accelerate burning and elimination of PM. • If the amount of accumulated PM largely exceeds the specified value, the PCM flashes the gasoline particulate filter warning indication/warning light to notify the driver that automatic gasoline particulate filter regeneration control needs to be performed.

Function

Description

Main relay control

• Supplies power to each part by switching the main relay on/off at the optimal timing according to the vehicle conditions.

Drive-by-wire control

• Calculates the optimum target throttle valve opening angle and controls the throttle valve actuator which allows the driver to drive the vehicle at will.

• The drive-by-wire control is composed of the idle air control, accelerator control, traction control, excess engine speed control, overspeed control, electric variable valve timing cooperation control, brake override system, engine oil temperature control, EGR control, supercharger control.

Electric variable valve timing control

• The PCM determines the optimum valve timing for the engine operation conditions and sends the motor drive signals to the electric variable valve timing driver.

• With the adoption of electric drive on the exhaust side, variable control of valve timing coordinated with the intake side is performed unaffected by the engine conditions, achieving improved fuel economy and reduced pumping loss.

Fuel injection control

• Performs optimum fuel injection according to engine operation conditions.

• The PCM determines the engine operation conditions based on the signals from each input device and drives the fuel injectors at the optimal fuel injection time (fuel injection amount) and the fuel injection timing to inject fuel.

• Optimally controls combustion based on fuel injection amount, fuel injection timing, number of fuel injections, and the fuel pressure to achieve emission performance improvement and higher engine output.

Exhaust shutter valve control

• The PCM controls the exhaust shutter valve when burning a lean air-fuel mixture.

• The valve is controlled variably according to the engine conditions to create optimum conditions inside the cylinder for burning a lean air-fuel mixture.

Electric water pump control

• The PCM sends a duty signal to the electric water pump according to the engine operation conditions to adjust the cooling performance of the water-cooled charge air cooler.

Fuel pump control

• By switching the fuel pump discharge amount, reduced power consumption and improved fuel economy have been achieved.

• The PCM determines the optimum fuel pump discharge amount according to the engine operation conditions, and sends the fuel pump drive signal to the fuel pump control module.

High pressure fuel pump control

• Changes the fuel pressure applied to the fuel injector according to engine operation conditions to improve engine output and startability.

• The PCM determines the fuel pressure value corresponding to the engine operation conditions based on each input signal, and drives the spill valve control solenoid valve for optimum control of fuel pressure.

Electronic spark advance

• Controls ignition to optimum timing according to engine operation conditions.

• Serviceability has been improved by eliminating the necessity of ignition timing adjustment.

• The PCM determines the engine operation conditions based on input signals from each sensor and blocks current to the ignition coils at the calculated ignition timing, causing the spark plugs to discharge (ignite) by the effect of electromagnetic mutual induction.

EGR control

• To recirculate an optimum amount of exhaust gas to the combustion chamber according to the engine operation conditions, the PCM controls the EGR valve to open and close the valve.

Purge control

• By performing the purge control according to the engine operation conditions, an appropriate amount of evaporative gas is introduced into the supercharger to prevent release of evaporative gas into the atmosphere while ensuring drivability.

• The PCM drives the purge solenoid valve based on the signal from each control part.

A/F sensor heater control

• Based on the control of the A/F sensor heater, a stabilized oxygen concentration is detected even at low exhaust temperatures, and feedback control of fuel injection even at cold engine start is made possible for improved cold temperature exhaust emission performance.

• Both emission performance and sensor protection have been improved by duty control of the heater according to engine operation conditions (exhaust gas temperature).

HO2S heater control

• Based on the control of the HO2S heater, a stabilized oxygen concentration is detected even at low exhaust temperatures, and feedback control of fuel injection even at cold engine start is made possible for improved cold temperature exhaust emission performance.

• Both emission performance and sensor protection have been improved by duty control of the heater according to engine operation conditions (exhaust gas temperature)

A/C cut-off control

• To improve drive performance and A/C compressor reliability, the A/C relay is turned off at the appropriate timing according to the engine operation conditions, and the A/C operation is controlled.

Electrical fan control

• Engine reliability and cooling performance have been improved through cooling of the radiator and condenser by operation of the cooling fan according to vehicle conditions.

Starter cut-off control

• The PCM controls energization to the starter relay according to an immobilizer system request to improve security.

• While not in P or N position, the starter relay energization by the ignition key is inhibited.

Integrated starter generator (ISG)control

• Idling stability has been assured by optimum power generation amount of the ISG according to the engine operation and electrical load conditions.

• The PCM controls the variable torque type ISG so that the driver does not feel a difference in the deceleration from the power generation torque produced during deceleration.

i-stop control

• When the vehicle is stopped such as at a stop light, the i-stop control stops/starts the engine automatically to improve fuel economy and reduce exhaust gas and idling noise.

• The PCM determines whether to permit/inhibit i-stop control based on the signal from each input part and CAN communication.

• The i-stop control includes the engine stop control, engine restart control, electric AT oil pump driver control, and hill launch assist functions.

Engine oil variable control

• To reduce the oil pump operation load applied to the engine, the PCM adjusts the engine hydraulic pressure to the appropriate pressure according to the engine operation conditions.

• The PCM performs duty control of the engine oil solenoid valve to variably adjust the engine oil discharged from the oil pump.

Water flow control

• The PCM controls the coolant switching valve and the electric thermostat according to the vehicle conditions and the engine coolant temperature.

• By blocking each water passage before the engine warms up, and suppressing heat radiation, the temperature of the internal wall of the cylinder is quickly increased to improve fuel economy.

AWD control

• An electronically controlled AWD system (i-ACTIV AWD) has been adopted which controls the distribution of the drive torque for the front and rear wheels automatically and optimally, for improved road handling ability, steering stability, and fuel economy.

• The PCM determines the driving conditions or road conditions by each input signal and the ESU controls the output current to the electronic control coupling (AWD solenoid) inside the rear differential for optimum distribution of the drive torque from the engine to the rear wheels.

• The load on the driver is reduced and operability is improved by the PCM automatically performing the AWD control.

Fresh-air duct control^*

• The engine intake air passage is switched by opening/closing the fresh-air duct valve.

• By switching the intake air passage according to the engine operating conditions and optimizing the temperature inside the cylinder, improved fuel economy is achieved.

Supercharger control

• The supercharger clutch is switched on/off according to the engine operation conditions to achieve optimum boost pressure.

Swirl control

• The air flow in the cylinder is adjusted by opening/closing the swirl control valve.

• Optimum air flow is created in the cylinder according to the engine operation conditions, improving fuel economy.

Air bypass control

• The boost pressure in the intake manifold is adjusted by opening/closing the air bypass valve.

• Optimum boost pressure is achieved according to the engine operation conditions, improving the engine output.

Gasoline particulate filter regeneration control

• Particulate matter (PM) in the gasoline particulate filter is eliminated during deceleration fuel-cut.

• If the amount of accumulated PM exceeds the specified value, the PCM turns on the gasoline particulate filter warning indication/warning light and performs automatic gasoline particulate filter regeneration control to accelerate burning and elimination of PM.

• If the amount of accumulated PM largely exceeds the specified value, the PCM flashes the gasoline particulate filter warning indication/warning light to notify the driver that automatic gasoline particulate filter regeneration control needs to be performed.

Function	Page
Main relay control	(See MAIN RELAY CONTROL [SKYACTIV-X 2.0].)
Drive-by-wire control	(See DRIVE-BY-WIRE CONTROL [SKYACTIV-X 2.0].)
Electric variable valve timing control	(See ELECTRIC VARIABLE VALVE TIMING CONTROL [SKYACTIV-X 2.0].)
Fuel injection control	(See FUEL INJECTION CONTROL SYSTEM [SKYACTIV-X 2.0].)
Exhaust shutter valve control	(See EXHAUST SHUTTER VALVE CONTROL [SKYACTIV-X 2.0].)
Electric water pump control	(See ELECTRIC WATER PUMP CONTROL [SKYACTIV-X 2.0].)
Fuel pump control	(See FUEL PUMP CONTROL [SKYACTIV-X 2.0].)
High pressure fuel pump control	(See HIGH PRESSURE FUEL PUMP CONTROL [SKYACTIV-X 2.0].)
Electronic spark advance control	(See ELECTRONIC SPARK ADVANCE CONTROL [SKYACTIV-X 2.0].)
EGR control	(See EGR CONTROL [SKYACTIV-X 2.0].)
Purge control	(See PURGE CONTROL [SKYACTIV-X 2.0].)
A/F sensor heater control	(See AIR FUEL RATIO (A/F) SENSOR HEATER CONTROL [SKYACTIV-X 2.0].)
HO2S heater control	(See HEATED OXYGEN SENSOR (HO2S) HEATER CONTROL [SKYACTIV-X 2.0].)
A/C cut-off control	(See A/C CUT-OFF CONTROL [SKYACTIV-X 2.0].)
Electrical fan control	(See ELECTRICAL FAN CONTROL [SKYACTIV-X 2.0].)
Starter cut-off control	(See STARTER CUT-OFF CONTROL [SKYACTIV-X 2.0].)
Integrated starter generator (ISG)control	(See INTEGRATED STARTER GENERATOR (ISG) CONTROL [SKYACTIV-X 2.0].)
i-stop control	(See i-stop CONTROL [SKYACTIV-X 2.0].)
Engine oil variable control	(See ENGINE OIL VARIABLE CONTROL [SKYACTIV-X 2.0].)
Water flow control	(See WATER FLOW CONTROL [SKYACTIV-X 2.0].)
AWD control	(See AWD CONTROL [SKYACTIV-X 2.0].)
Fresh-air duct control^*	(See FRESH-AIR DUCT CONTROL [SKYACTIV-X 2.0].)
Supercharger control	(See SUPERCHARGER CONTROL [SKYACTIV-X 2.0].)
Swirl control	(See SWIRL CONTROL [SKYACTIV-X 2.0].)
Air bypass control	(See AIR BYPASS CONTROL [SKYACTIV-X 2.0].)
Gasoline particulate filter regeneration control	(See GASOLINE PARTICULATE FILTER REGENERATION CONTROL [SKYACTIV-X 2.0].)

Function

Page

Main relay control

(See MAIN RELAY CONTROL [SKYACTIV-X 2.0].)

Drive-by-wire control

(See DRIVE-BY-WIRE CONTROL [SKYACTIV-X 2.0].)

Electric variable valve timing control

(See ELECTRIC VARIABLE VALVE TIMING CONTROL [SKYACTIV-X 2.0].)

Fuel injection control

(See FUEL INJECTION CONTROL SYSTEM [SKYACTIV-X 2.0].)

Exhaust shutter valve control

(See EXHAUST SHUTTER VALVE CONTROL [SKYACTIV-X 2.0].)