Kia Stinger: Body Electrical System / Integrated Body Control Unit (IBU)

Kia Stinger CK 2018-2020 Service Manual / Body Electrical System / Integrated Body Control Unit (IBU)

Specifications
Specifications

Items
Specifications
Rated voltage
DC 12 V
Operating voltage
DC 9 - 16 V
Operating temperature
-40 - 176°F (-40 - 80°C)
Dark current
Max. 4.0 mA

Components and components location
Components

Connector Pin Information

No.
Connector A
Connector B
Connector C
1
-
B-CAN (Low)
Front wiper low bus switch_Input
2
Mirror power_Input
B-CAN (High)
Ground (Power)
3
P-CAN (Low)
PDW-F_Power_Output
Battery (Power)
4
P-CAN (High)
PDW-R_Power_Output
Battery (ECU)
5
-
Ground (ECU)
Driver outside handle switch_Input
6
Right mirror unfold_Output
PDW Switch_Input
Position_Input(A/T Option)
IGN Lock switch_Input (M/T Option)
7
Right mirror horizontal_Output
PDW (Option)_Input
Interior antenna1 (-)_Output
8
Immobilizer power_Output
-
Bumper antenna (-)_Output
9
Immobilizer ground_Output
-
Interior antenna2 (-)_Output
10
Brake switch_Input
-
Assist outside handle antenna (-)_Output
11
ESCL Enable_Output
Front wiper high relay_Output
Trunk interior antenna3 (-)_Output
12
Brake switch fuse_Input
Rear left seat belt indicator_Output
Driver outside handle anntenna (-)_Output
13
Fog switch_Input
Assist seat belt indicator_Output
-
14
Light switch_Input
-
COM (ESCL)
15
Front wiper volume switch_Input
LF Searching_Output
Auto light sensor power_Output
16
PDW Switch indicator_Output
-
ACC_Input
17
SSB Ring illumination_Output
SSB Switch1_Input
IGN1 Relay_Output
18
LIN CAN (PDW)
PDW_Power_Input
ACC Relay_Output
19
-
Security indicator_Output
ESCL (-)_Output
20
Engine RPM_Input
Sunroof status_Input
ESCL (+)_Output
21
Wheel speed sensor_Input
Rain sensor (Option)_Input
Assist outside handle switch_Input
22
-
Wiper parking switch_Input
-
23
Right mirror fold_Output
Wiper power relay_Output
Interior antenna1 (+)_Output
24
Right mirror vertical_Output
Front wiper low relay_Output
Bumper antenna (+)_Output
25
-
-
Interior antenna2 (+)_Output
26
Puddle pocket lamp_Output
-
Assist outside handle antenna (+)_Output
27
Start feedback_Input
Rear center seat belt indicator_Output
Trunk interior antenna3 (+)_Output
28
-
-
Driver outside handle anntenna (+)_Output
29
Starter relay_Output
SSB Symbo illumination (-)_Output
COM (EMS)
30
Headlamp high switch
Rear right seat belt indicator_Output
Auto light sensor ground_Output
31
Front wiper switch
SSB Switch2_Input
Auto light sensor signal_Input
32
-
ESCL Unlock switch_Input
IGN1_Input
33
Multifunction switch ground_Input

IGN2_Input
34
External buzzer_Output
IGN2 Relay_Output
35
SSB Symbo illumination (+)_Output
Front washer switch_Input
36
LIN CAN (Rain sensor)
Battery (+)_ESCL
37
-

38
ATM Solenoin_Output

Schematic diagrams
Circuit Diagram

Description and operation
Description

Integrated Body Control Unit (IBU)

Integrated body control unit has integrated several functions including body control module (IBU), smart key unit (SMK), and tire pressure monitoring system (TPMS).

1.

Body Control Module (IBU) Functions

Burglar Alarm
Tailgate Burglar Alarm
Issues an alarm depending on the tailgate operation.
Panic Alarm
Generates warning sound and displays flasher lamp (horn & flasher) depending on the panic signal.
Security Lamp Control
Controls security lamp in vehicle alert status.
Heating Wire
Door Mirror Heating Wire
The defogger and deicer function prevents and removes fog and frost from the mirror and window using the rear window heating wire switch (defogger switch).
Rear Window Heating Wire Control
External Lamp
Tail Lamp
Turns on / off the tail lamp automatically. It also turns off the tail lamp automatically when the driver forgot to turn off the lamp switch.
Auto Light
Turns on/off the tail lamp and head lamp automatically depending on whether it is day or night when the head lamp switch is placed at Auto.
Welcome Light
The welcome light function turns on the head lamp and tail lamp for 15 seconds when an unlock signal is detected while vehicle door is locked.
Escort Function
Turns on the escort lamp when the power is turned off while the head lamp is on.

It turns on the head lamp and maintains the state for 20 minutes if ignition is turned off while the head lamp is on.

The head lamp remains on only for 30 seconds when the driver seat door is opened and closed during the 20-minute period.

The head lamp turns off when remote control lock button is pressed twice while the head lamp is on.

Head Lamp (Low Beam / High Beam)
Controls high beam / low beam depending on the head lamp switch (multi-functional switch).
Daytime Driving Light Control
Controls the daytime driving light lamp depending on the conditions at the time of vehicle start.
Internal Lamp
Engine Start Maintenance Button Lamp
Turns on/off the SSB lamp depending on vehicle power conditions, door open / closed status, and alert mode.
Room Lamp
Turns on/off the interior lamp depending on vehicle power conditions and door open / closed status.
Rheostat
Controls the brightness of interior electrical lamps (instrument cluster, HUD, AVN, etc.) depending on rheostat switch input.
Steering Wheel Heating Wire
Steering Wheel Heating Wire Control
Controls steering wheel heating wire based on steering wheel heating wire switch.
Tailgate
Tailgate Release Control
Releases the tailgate lock and issues a warning depending on the tailgate switch input.
Front / Rear Parking Assist
PAS Display
Receives a signal from parking assist sensor through LIN communication and displays it on the instrument cluster.
PAS Warning
Detects obstacles in front and rear sides using the parking assist sensor (PAS sensor) in the case of gear input (R or D) and issues a warning if there is an obstacle.
Warning
Seat Belt Reminder and Indicator Lamp
Issues a warning if the seat belt is not fastened, and prevents pattern activation if the vehicle is driven while the seat belt is not fastened.
Key Reminder Warning
Issues a warning if the driver seat door is open while ACC is on.
Parking Brake Warning
Generates a warning sound if vehicle speed exceeds 5 km/h while IGN is on and parking brake is on.
Sunroof Open Warning
Issues a warning if the key is removed and the driver leaves the vehicle while the sunroof is open.
Wiper and Washer
Wiper (Low / High / Mist / Auto)
IBU receives wiper switch signal via B-CAN and sends the data to wiper motor (embedded) via LIN communication.
Front Washer
IBU sends the washer switch signal to front washer motor.

2.

Smart Key Unit (SMK) Functions

SMK
Door Lock and Unlock
Locks/Unlocks the door based on the door unlock signal and the signal from push buttons on the driver seat / passenger seat outside handles.
SMK Welcome Light
Controls door mirror and puddle lamp after smart key authentication when the driver with smart key approaches the vehicle.
Smart Trunk
Opens the trunk if the driver with valid smart key stays in front of the rear bumper (within LF antenna range) for 3 seconds or more.
SMK Warning
Key Reminder 1
When the driver attempts to lock the door, it checks if there is a smart key inside the vehicle and unlocks the door if there is one.
Key Reminder 2
Checks the door lock status for 0.5 seconds after the vehicle door is closed and unlocks the door and generates a warning sound using the external buzzer if the door is locked.
Door Lock Warning 1
Generates a warning sound with the external buzzer if the driver tries to leave the vehicle while ACC or IGN is on.
Door Lock Warning 2
Generates a warning sound with the external buzzer if the driver tries to lock the door and leave the vehicle while one or more doors are open.
Door Lock Warning 3
Searches for a smart key inside the vehicle when the driver tries to lock the door, and issues a warning and does not lock the door if there is a smart key inside.
Key Out Lamp Warning
If the vehicle moves at 3 km/h or less while ACC or IGN is on and the door is open, it searches for the smart key every 3 seconds and blinks the warning lamp if there is no smart key.
SMK RKE (Remote Keyless Entry)
Door Lock / Unlock
Locks/Unlocks the door based on the door unlock signal and the signal from push buttons on the driver seat / passenger seat outside handles.
Panic
Performs vehicle panic and panic stop functions based on the panic button signal.
Window Open
Opens/Closes vehicle window based on the smart key signal.
Engine Start
Start Stop Button (SSB), Immobilizer, Start Relay Power Control, SSB Lamp Control

3.

Tire Pressure Monitoring System (TPMS) Functions

Tire pressure monitoring system continuously monitors pressure and temperature inside the tire in order to warn the driver of the changes in tire pressure that may have influence on vehicle driving conditions. TPMS control module analyzes the data from the WE (Wheel Electronic) sensor attached inside each wheel and determines the tire conditions and generates a signal that is necessary for warning lamp control.

Communication Network Diagram

Abbreviation
Explanation
ACU
Airbag Control Unit
AFL
Adaptive Front-Lighting System
AMP
Amplifier
AUDIO
Audio Head Unit
AVM
Around View Monitor
B_CAN
Body Controller Area Network
BCW
Blind-Spot Collision Warning
C_CAN
Chassis Controller Area Network
CDP
Compact Disk Player
CLU
Cluster Module
DATC
Dual Automatic Temp Control
DDM
Driver Door Module
ECM
Engine Control Module
F_PUMP
Fuel Pump Control Module
HUD
Head Up Display
IBU
Integrated Body Control Unit
ICU
Integrated Central Control Unit
IFB
Interface Box
IMS
Integrated Memory System
LDW
Lane Departure Warning
LKA
Land Keeping Assist
M_CAN
Multi media Controller Area Network
MDPS
Motor Driven Power Steering
MFC
Multi Function Camera
MTC
Manual Temp Control
ODS
Occupant Detection System
P_CAN
Powertrain Controller Area Network
PCM
Powertrain control module
PTG
Power Tailgate Module
RVM
Rear View Monitor
SCC
Smart Cruise Control
SCM
Steering Column Module
TCM
Transmission Control Module
VDC
Vehicle Dynamic Control
WPC
Wireless Power Charger

Repair procedures
Removal
1.

Disconnect the negative (-) battery terminal.

2.

Remove the glove box housing.

(Refer to Body - "Glove Box Housing")

3.

Disconnect the blower motor connector (A) after removing the mounting clip (B).

4.

Disconnect the integrated body control unit connectors (A).

5.

Remove the integrated body control unit (A) after loosening the mounting nuts and bolt.

6.

Remove the wiring harness mounting clip (A) from the integrated body control unit.

Installation
1.

Install the wiring harness mounting clip from the integrated body control unit.

2.

Install the integrated body control unit.

3.

Connect the integrated body control unit connectors.

4.

Connect the blower motor connector and clip.

5.

Install the glove box housing.

6.

Connect the negative (-) battery terminal.

BCM Diagnosis With KDS
1.

In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (KDS).

The diagnostic system (KDS) provides the following information.

(1)

Self diagnosis : Checking failure and code number (DTC)

(2)

Current data : Checking the system input/output data state

(3)

Actuation test : Checking the system operation condition

(4)

Additional function : Controlling other features including system option setting and zero point adjustment

2.

Select the "Car model" and the 'Integrated body control unit (IBU)' to be checked in order to check the vehicle with the tester.

3.

Select the 'Current Data' menu to search the current state of the input/output data.

4.

To forcibly actuate the input value of the module to be checked, select option 'Actuation Test'.

5.

If you want to change user option, select "User Option".

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