Hyundai i-30: ISG (Idle Stop & Go) System / Repair procedures
| Operating Condition for
the ISG function |
1. Auto stop or Auto start condition
▶ If all of the below conditions are satisfied
| •
|
If the following conditions are not met, entry into the ISG
system is prohibited.
|
|
Component
|
Conditions
|
Remark
|
AT
|
MT
|
ISG OFF Switch
|
OFF
|
OFF
|
ISG OFF switch indicator lamp ->OFF
|
Drive door / Seat belt / Hood
|
Closed
|
Closed
|
|
Gear state
|
D range or N range
|
Neutral
|
When gear is shifted to R, entry into the ISG system is prohibited.
|
Brake pedal
|
ON (Auto Stop) / OFF (Auto Start)
|
-
|
|
Clutch pedal
|
-
|
OFF (Auto Stop) / ON (Auto Start)
|
|
Vehicle speed
|
When entering below 0 kph after driving above 5 kph.
|
When entering below 5 kph after driving above 10 kph.
|
Idle stop is possible when shifting the gear from D to N after stopping
(allowed only once)
|
A/C System
|
When conditions of full auto air conditioner/manual air conditioner are
satisfied
|
When conditions of full auto air conditioner/manual air conditioner are
satisfied
|
Outside temperature is within -20 ~ 50 degrees
|
MDPS
|
Within 180 degrees
|
No limit
|
|
RR Defogger switch
|
Gasoline : OFF / Diesel : irrelevant
|
Gasoline : OFF / Diesel : irrelevant
|
|
Battery (Charge / discharge)
|
Over SOC 68%
|
Over SOC 68%
|
|
Engine Coolant Temperature
|
Gasoline : 70 ~ 75°C / Diesel : 20 ~ 30°C
|
Different depending on the region and vehicle model
|
Ambient pressure
|
Over 750hPa
|
No limit
|
|
Slope
|
From -5 to 12% (some SUV's are from -5 to 8%)
|
No limit
|
|
ECM
/ TCM
|
When conditions (temperature, DTCs, OBD diagnosis, etc.) are satisfied
|
In case of diesel, ISG operation is prohibited when regenerating the DPF.
|
ISG system error
|
No occurred
|
|
| •
|
In congested areas, if the driver wishes to stop the vehicle
and change lever from D→N, the ignition will turn OFF.
|
|
2. Conditions for forced restart (If none of the below condition is not satisfied)
Component
|
Conditions
|
Remark
|
AT
|
MT
|
A/C System (Blower Max)
|
ON
|
ON
|
If more than 5/8, it is judged as max
|
RR Defogger switch
|
ON
|
ON
|
|
Comfortable
|
Full auto air conditioner/manual air conditioner request
|
Full auto air conditioner/manual air conditioner request
|
Based on the evaporator temperature and time
|
Battery voltage
|
If the charge/discharge performance are not satisfied
|
If the charge/discharge performance are not satisfied
|
Different depending on the region and vehicle model
|
Brake vacumm
|
Over -35 kPa
|
Over -35 kPa
|
|
Vehicle speed
|
Over 1.5 kph
|
Over 6 kph
|
|
Seat / Door
|
When opened during brake pedal On.
|
None (The message is displayed on the instrument cluster)
|
Ensuring safety
|
Hood
|
Engine start with key when the hood is opened
|
None (The message is displayed on the instrument cluster)
|
When operating the brake and accelerator simultaneously
|
Engine is restarted immediately
|
-
|
ISG OFF Switch
|
Engine is restarted immediately
|
-
|
|
| •
|
When the battery negative (-) terminal is disconnected, the
battery sensor is deactivated. So, after reinstalling the battery
sensor, make sure to activate it.
|
| •
|
The battery sensor is activated when the vehicle is left in
parking status for about 4 hours after battery negative (-)
terminal is connected to the battery.
|
| •
|
Even if the battery sensor is deactivated, the ISG may operate
restrictively but for normal ISG operation, the battery sensor
must be activated.
|
|
|
ISG system deactivation by fault.
| –
|
Fault in communication line (LIN/CAN)
|
| –
|
Fault brake booster vacuum pressure sensor
|
| –
|
When starter motor needs to be replaced as its life has ended
due to the use of ISG for a long period of time
|
As stated above, if the sensors and parts related to the ISG are faulty
or system error occurs, the ISG indicator (yellow) will blink for 5
seconds then remains ON and the message "Check Engine Auto Stop System"
is displayed on the instrument cluster. At this time, the ISG OFF switch
indicator turns ON.
Especially, when the battery sensor is reinstalled after replacing or
removing it, ISG system will operate normally as battery sensor becomes
normal after the vehicle is left in parking status for about 4 hours.
However, when keeping the ignition switch OFF condition after extracting
the key, power lines of all the personal electrical devices (ex: navigation,
black box, etc) must be disconnected other than the standard electrical
devices installed in assembly line.
(However, it may take a long time depending on the vehicle condition)
|
| •
|
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.
|
|
Schematic Diagram
•
The ISG system is strongly networked with the power management...
Other information:
Description
Body Control Module (BCM) function
No
Item
Description
1
Washer Linked Wiper
–
If the washer switch is pressed ON for 0...
..
Categories
If your vehicle is equipped with a
sunroof, you can slide or tilt your
sunroof with the sunroof control lever
located on the overhead console.
The ignition switch must be in the ON
position before you can open or
close the sunroof.
The sunroof can be operated for
approximately 30 seconds after the
ignition key is removed or turned to
the ACC or LOCK(or OFF) position.
However, if the front door is opened,
the sunroof cannot be operated even
within 30 seconds.
read more
Schematic diagrams
