System Components

Information

The ISG system consists of a mutual network among the related components. Refer to relevant system repair information for detail.

(Refer to table below)

Parts	System
Engine Control Module (ECM)	Engine Control/Fuel System - Engine Control Module (ECM)
Front seat belt buckle	Body - Front Seat Belt Buckle
Front door latch assembly	Body - Front Door Latch Assembly
Hood latch assembly	Body - Hood Latch Assembly
Stop lamp switch	Brake System - Stop Lamp Switch
Position Switch	Automatic Transaxle System - Position Switch
Ambient temperature sensor	Heating, Ventilation And Air Conditioning - Ambient Temperature Sensor
Accelerator position sensor	Engine Control/Fuel System - Accelerator Position Sensor (APS)
Brake booster vacuum pressure sensor	Brake System - Brake Booster
Battery sensor	Engine Electrical System - Battery Sensor
AGM battery	Engine Electrical System - Battery
DC/DC converter	Engine Control/Fuel System - DC/DC converter
Starter	Engine Electrical System - Starter
ISG OFF switch	Advanced Driver Assistance System - Driver Parking Assistance Switch

Engine Control Module (ECM): Using all vehicle control system information, the ECM controls the Engine ON and OFF.

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Front seat belt buckle: It detects the seat belt engagement and this information is used as the ISG system operating condition.

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Front door latch assembly: It detects the driver side door open/close status and this information is used as the ISG system operating condition.

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Hood latch assembly: It detects the hood open/close status and this information is used as the ISG system operating condition.

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Stop lamp switch: It detects the brake pedal operation and this information is used as the ISG system operating condition.

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Accelerator position sensor: It detects the accelerator pedal operation and this information is used as the ISG system operating condition. (When AUTO HOLD is applied)

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Position switch: It detects the gear shift position (P/R/N/D, manual mode) and this information is used as the ISG system operating condition.

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Brake booster vacuum pressure sensor: It detects the brake pressure and this information is used as the ISG system operating condition.

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Ambient temperature sensor: It detects the ambient temperature and this information is used as the ISG system operating condition.

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Battery sensor: If the battery sensor is deactivated, the ISG system does not work.

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AGM battery:
Due to more frequent engine start ON and OFF process than regular vehicles, the vehicles with ISG require the higher battery performance and the better battery state of charge management. Despite the high loads by frequent charging and discharging, AGM battery presents excellent durability.

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DC/DC converter : The DC converter supplies the boosted voltage to prevent electronic device (AVN or Audio, Cluster, etc.) reset from voltage drop at engine automatic start.

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Starter : Vehicles with ISG are frequently engine ON/OFF, therefore starter motor with improved durability is applied.

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ISG OFF switch : The ISG system is always ON whenever the engine starts, and can ISG system OFF by pressing the switch.

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