Kia Stinger CK Quiz
Engine Control System/Fuel System

ISG (Idle Stop & Go) System

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 27Engine Mechanical System — 47Engine Electrical System — 19Emission Control System — 12Engine Control System/Fuel System — 51Automatic Transmission System — 34All-Wheel Drive (AWD) System — 7Drive Shaft and Axle — 15Suspension System — 25Steering — 8Restraints — 19Brake System — 22Body (Interior and Exterior) — 47Front Seat Belt — 63Body Electrical System — 99Windshield Wiper/Washer — 11Heating, Ventilation, and Air Conditioning — 32
11steps
~66min
4/5difficulty
Done 0 of 11

Components and Component Location

Component Location

1. Battery Sensor
2. Brake Booster Vacuum Pressure Sensor (BBVPS)
3. AGM Battery
4. DC-DC Converter [200 W]
5. DC-DC Converter [400 W]
6. ISG Switch		 7. Generator
8. Starter
9. Brake Switch
10. Door Switch
11. Seat Belt Switch
12. Hood Switch

1. Battery Sensor
3. AGM Battery		 2. Brake Booster Vacuum Pressure Sensor (BBVPS)
4. DC-DC Converter [200 W] 5. DC-DC Converter [400 W]
6. ISG Switch 7. Generator
8. Starter 9. Brake Switch
10. Door Switch 11. Seat Belt Switch
12. Hood Switch

Description and Operation

Description

The Idle Stop & Go (ISG) system shuts off the engine when the vehicle stops, and then restarts the engine and drives the vehicle when the accelerator pedal is depressed. It temporarily stops the engine while waiting at a signal or while idling to improve fuel efficiency and reduce exhaust emissions. However, the ISG system may not operate if the engine oil or ambient temperature is too low, or if the 12 V battery voltage is too low. The system can be deactivated by pressing the ISG OFF switch when the driver does not wish to use the ISG system.

Operation

Non-M/T

How to use:

  1. Automatic engine stop: D range + brake pedal depressed.

  2. Automatic engine restart

    (1) Brake pedal released.

    (2) Brake pedal depressed + manual range (sport mode)

    (3) Brake pedal depressed + R range

  3. The vehicle is moving.

  4. Shift lever in D position. Brake pedal released.

  5. The engine is running. (The vehicle is moving.)

  6. Driver brakes until the vehicle comes to a complete stop.

  7. The shift lever is in the D position. The brake pedal is depressed.

  8. The engine stops. The "AUTO STOP" symbol illuminates on the instrument cluster.

  9. Driver wants to continue driving.

  10. Shift lever in D position. Brake pedal released.

  11. The engine restarts. The "AUTO STOP" indicator turns off.

Circuit Diagrams

Operating conditions for ISG function

1. Auto Stop or Auto Restart.

▶ If all of the following conditions are met

Component Condition NOTE
ISG OFF switch OFF ISG OFF switch indicator light -> OFF
Engine Coolant Temperature More than 30 °C
Brake vacuum Below -35 kPa
Driver door, seat belt, hood Closed
Emergency status
(TPS/CKP/CMP/WTS/vehicle speed signal)		 Satisfied DPF regeneration prohibited
Air conditioning system Satisfied
Battery sensor
[SOC: More than 78%, Temperature: 2-55°C (35.6-131°F)]		 Satisfied
ISG related part malfunction Does not occur
Vehicle speed Enter a value below 0 km/h after more than 8 km/h. ISG system prohibited up to speed 8 km/h
Accelerator Pedal OFF Engine auto stop conditions
Brake switch ON Engine auto stop conditions
OFF Engine auto stop conditions
Transmission status N (Neutral) / D Engine auto stop conditions
P / 1 / 2 Engine auto stop conditions

2. Restriction conditions for Auto Stop or Auto Restart

▶ If one of the following conditions applies, the ISG system will not operate correctly.

Component Conditions NOTE
ISG switch ON ISG OFF switch indicator status
Emergency status
(TPS/CKP/CMP/WTS/vehicle speed signal, etc.)		 Not satisfied DPF regeneration prohibited
Driver door, seat belt, hood status Open
Brake vacuum More than -35 kPa
Air conditioner status Not satisfied
Battery sensor
(SOC: more than 78%, temperature: 2–60 °C)		 Not satisfied
ISG system error Occurred
Steering Wheel Steering angle greater than
Air conditioning system A/C switched on, FATC more than 6, MTC more than 3
Defrost Defrost switch ON
etc. Downhill, steep uphill
Operate the SPAS

3. Conditions for Forced Restart (If none of the following conditions apply)
Component Conditions NOTE
Safety requirements Low brake system pressure More than -35 kPa
Low Battery Voltage Excessive electrical load maintained for 3 minutes
Active windshield heater
Inertial speed greater than 1.5 km/h
Driver door open or driver seat belt not fastened Brake pedal is pressed
Ignition on with hood open
Engine stopped for a long time After 300 seconds
Vehicle rolled on a steep slope
Convenience requirements A/C ON, FATC more than 6, MTC more than 3, or HVAC performance unsatisfactory
ISG OFF button pressed

4. Restriction conditions for Auto Stop operation

Conditions Condition NOTE
Driver side door, seat belt, hood status (brake released state) Open Start using the ignition switch or the start button only
MTC error (TCU, FATC/cluster) Occurred
Emergency status (TPS/CKP/CMP/WTS/vehicle speed signal) Not satisfied

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