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Function
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Contents
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IAC
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Controls the IAC solenoid valve so that an optimum idle speed is obtained according to engine operation conditions.
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Fully closed throttle learning function
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Learns the fully closed throttle position (voltage deviates due to deterioration over time) based on the signal from the throttle position sensor.
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Variable intake air control
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Controls the variable intake air solenoid valve and operates the variable intake air system to enhance the inertia charging effect.
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Variable tumble control
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Controls the variable tumble solenoid valve and operates the variable tumble system to improve intake airflow speed near injectors and cause a strong air tumble to occur in the combustion changer, thereby promoting efficient air/fuel vaporization.
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Fuel injection control
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Performs optimum fuel injection according to engine operation conditions.
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Fuel pump control
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Fuel pump operation that ensures safety and durability is achieved due to control of fuel pump relay energization.
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Ignition control
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Controls the ignition coil to provide optimum ignition timing according to engine conditions
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Evaporative purge control
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Controls the purge solenoid valve to introduce evaporative gas into the dynamic chamber while maintaining driveability.
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EGR control
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Controls the EGR valve to the optimum opening angle according to engine operation conditions.
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HO2S heater control
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Controls the heater in the HO2S for rapid sensor activation and stabilized sensor signal.
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A/C cut-off control
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Controls the A/C relay, turning the A/C on/off according to engine conditions, to maintain driveability.
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Electrical fan control
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Drives the main and additional fans according to engine conditions by sending a duty signal to the fan control module, thereby improving engine reliability and idle stability.
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Generator output control
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Controls energization to the generator field coil to provide an optimum generator output amount according to engine and electrical load conditions, thereby maintaining idle stability and load resistance characteristics.
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On-board diagnostic system
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Improves serviceability by detecting malfunctions in input/output signals, reading out of signals, operation of input/output parts and other functions.
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Display function
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ECT signal
• The PCM assimilates the ECT sensor signal and sends it to the water temperature gauge in the instrument cluster for display.
Malfunction indicator lamp control
• When there is a malfunction in any engine control signal, the malfunction indicator lamp illuminates to advise the driver of an engine malfunction.
Generator warning light control
• When there is a malfunction in a generator control signal, the generator warning light illuminates to advise the driver of a generator malfunction.
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