Operating Condition For The ISG Function
- Auto stop or Auto start condition
If all of the below conditions are satisfied
Component State Remark ISG OFF Switch OFF ISG OFF switch indicator lamp ->OFF Engine Coolant Temperature Over 30°C (86°F) Brake vacuum Below -35 kPa Drive door, Seat belt, Hood Closed EMS state
(TPS/CKP/CMP/WTS/Vehicle speed signal)Satisfied DPF Regeneration prohibited A/C System Satisfied Battery sensor
[SOC: Over 78% Temperatuere:2-55°C (35.6 - 131°F)]Satisfied ISG related part error Does not occur Vehicle speed Entry the below 0kph after Over 8kph Prohibition the ISG System before 8kph Accelerator pedal OFF Engine auto stop condition Brake switch ON Engine auto stop condition OFF Engine auto stop condition Gear state N (Neutal)/D Engine auto stop condition R/1/2 Engine auto stop condition NOTE: In congested areas, if the driver wishes to stop the vehicle and change lever from D→N, the ignition will turn OFF. - Restriction conditions for Auto stop or Auto start
If one of the following conditions is met, the ISG system will not operate properly.
Component Conditions Remark ISG OFF swtich ON ISG OFF switch indicator state EMS State
(TPS/CKP/CMP/WTS/Vehicle speed signal etc.)Dissatisfied DPF Regeneration prohibited Driver side door, seat belt, hood state Open Brake vacuum Over -35 kPa A/C State Dissatisfied Battery sensor
(SOC: Over 78%, Temperature: 2 - 60°C))Dissatisfied ISG system error Occurred Steering wheel Greater the angle A/C System A/C switch ON, FATC over 6, MTC over 3 Defrost Defrost switch ON etc. Downhill, steep uphill Operate the SPAS - Conditions for forced restart (If none of the below condition is not satisfied)
Component Conditions Remark Safety requirements Low pressure for braking system Over -35 kPa Low battery voltage Maintain excessive electrical load for 3 minutes Active defroster of front glass Inertial speed over 1.5 km/h (on downhill) Door open or driver side seat belt unfastened Brake Pedal Pressed Ignition switched ON with hood open Engine stopped for long After 300 seconds Vehicle parted on a steep slope Convenience requirements A/C ON, FATC over 6, MTC over 3 or HVAC performance dissatisfied ISG OFF' button pressed - Restriction conditions for Auto-Stop operation
Conditions State Remark Driver side door, seat belt, hood state (Brake OFF state) Open Start by using "ignition switch" or "button start key" (only) CAN error (TCU, FATC/Cluster) Occurred EMS state (TPS/CKP/CMP/WTS/Vehicle speed signal) Dissatisfied NOTE: In case of error during idle stop, the engine can only be started by using the key.CAUTION: The ISG system is strongly networked with the power management. In the event of battery replacement, disconnection of the battery terminal or after changing the engine management system, the reference data regarding the battery charge state and battery condition can be lost. Battery sensor can be reactivated by parking for approximately 4 hours after connecting the negative (-) battery terminal to the battery.CAUTION: ISG system deactivation by fault.- Fault in communication line (LIN/CAN)
Fault Electric oil pump
Fault ESP System
Fault Limp home mode
- Fault brake booster vacuum pressure sensor
Fault Brake master cylinder pressure sensor
Fault Brake pedal switch
Fault Battery sensor
When the ISG related sensors or system error occurs, the ISG OFF switch lights up. Especially when the battery sensor is replaced or reinstalled, the vehicle must be placed in the ignition switch OFF for about 4 hours for recalibration.
The ISG function should operate properly in approximately 4 hours. However, for the first 25 times, the ISG function will operate regardless of recalibration.WARNING: When the engine is in idle stop mode, it can be restarted without the driver taking any action.
Before leaving the car or doing anything in the engine room area, stop the engine by turning the ignition key to the LOCK position or removing it. - Fault in communication line (LIN/CAN)