Kia Stinger CK Quiz
Body Electrical System

Integrated Body Control Unit (IBU)

In this manual: Body Electrical 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
20steps
~120min
4/5difficulty
Done 0 of 20

Specifications

Specifications

Items Specifications
Rated Voltage 12 V DC
Operating Voltage 9–16 V DC
Operating Temperature -40 - 176°F (-40 - 80°C)
Dark Current Max. 4.0 mA

Components and Component Location

Components

Connector Pin Information

No. Connector A Connector B Connector C
1 - B-CAN (Low) Front Wiper Low Switch _ Input
2 Mirror Power _ Input B-CAN (High) Ground (Power)
3 P-CAN (Low) PDW-F_Power_Output Battery Charge)
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 variant)
IGN lock switch_Input (M/T variant)
7 Right mirror horizontal_Output PDW (option)_Input Internal antenna 1 (-)_Output
8 Immobilizer power_Output - Bumper Antenna (-)_Output
9 Immobilizer Ground_Output - Internal antenna 2 (-)_Output
10 Brake switch_Input - Auxiliary outside handle antenna (-)_Output
11 ESCL Enable_Output Front wiper high relay_Output Trunk internal antenna 3 (-)_Output
12 Brake switch fuse_Input Rear left seat belt indicator_Output Driver outside handle antenna (-)_Output
13 Fog light switch_Input Auxiliary 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 MOD (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 Auxiliary outside handle switch_Input
22 - Wiper park switch_Input -
23 Right mirror fold_Output Wiper power relay_Output Internal antenna 1 (+)_Output
24 Right mirror vertical_Output Front wiper low relay_Output Bumper Antenna (+)_Output
25 - - Internal antenna 2 (+)_Output
26 Puddle lamp_Output - Auxiliary outside handle antenna (+)_Output
27 Start feedback_Input Rear center seat belt indicator_Output Trunk internal antenna 3 (+)_Output
28 - - Driver outside handle antenna (+)_Output
29 Starter relay_Output SSB symbol illumination (-)_Output COM (EMS)
30 Headlamp High Beam 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 symbol illumination (+)_Output Front washer switch_Input
36 LIN CAN (rain sensor) Battery (+)_ESCL
37 -
38 ATM Solenoid_Output

Circuit Diagrams

Wiring Diagram

Description and Operation

Description

Integrated Body Control Unit (BCM)

The Integrated Body Control Unit has several functions, including the Intelligent Body Unit (IBU), Smart Key Module (SMK), and Tire Pressure Monitoring System (TPMS).

  1. Intelligent Body Unit (IBU) Functions

    Security Alarm Tailgate security alarm Outputs an alarm signal depending on the trunk door operation.
    Panic Alarm Generates a warning sound and flashes the lamps (horn and hazard lights) depending on the panic signal.
    Security Lamp Control Controls the security lamp when the vehicle is in the alarm state.
    Heating wire Door mirror heating wire The defogging and defrosting function prevents and removes fog and frost from the mirrors and window using the rear window heater wire switch (heater switch).
    Rear window heater wire control
    Exterior Lamps Rear Lamp Automatically turns the tail lamps on/off. It also turns off the tail lamps automatically when the driver has forgotten to turn off the lamp switch.
    Auto Light Automatically turns the tail lamps and headlamps on/off depending on whether it is day or night when the headlamp switch is in AUTO.
    Welcome Light The welcome light function turns on the headlamps and tail lamps for 15 seconds when the vehicle door unlock signal is detected while the vehicle is locked.
    Follow-Me-Home Function Turns on the follow-me-home lamps when the power is turned off while the headlamps are on.

    • It turns on the headlamps and maintains their state for 20 minutes when the ignition is off and the headlamps are on.

    • The headlamps remain on for only 30 seconds when the driver's seat door is opened and closed within a 20-minute period.

    • The headlamps turn off when the lock button on the remote control is pressed twice while the headlamps are on.
    Headlamp (Low/High Beam) Controls the high/low beam depending on the headlamp switch (multifunction switch).
    Daytime Running Light Control Controls the daytime running lamps depending on the conditions at the time the vehicle is started.
    Interior Lamp Engine Start/Stop Button (SSB) Lamp Turns the SSB lamp on/off depending on the vehicle power conditions, door open/closed status and warning mode.
    Map lamp Turns the interior lamp on/off depending on the vehicle power status and door open/closed status.
    Rheostat Controls the brightness of interior electrical lamps (cluster, HUD, AVN, etc.) based on the dimmer rheostat switch input.
    Steering wheel heating wire Steering wheel heating wire control Controls the steering wheel heating wire based on the steering wheel heater wired switch.
    Liftgate Tailgate open control Unlocks the trunk door lock and outputs a warning depending on the trunk switch input.
    Front/Rear Parking Assist PAS Display Receives the signal from the parking assist sensor via the LIN line and displays it on the instrument cluster.
    PAS Warning Detects obstacles at the front and rear with the parking assist sensors (PAS sensors) when reverse (R) or drive (D) is selected and warns if an obstacle is present.
    Warning Unfastened Seat Belt Reminder and Indicator Lamp Issues a warning if the seat belt is not fastened and prevents the vehicle from moving with the seat belt unfastened.
    Key Reminder Warning Issues a warning if the driver's seat door is open while the adaptive cruise control is on.
    Parking brake warning Generates an audible warning if the vehicle speed exceeds 5 km/h with the ignition on and the parking brake applied.
    Sunroof Open Warning Issues a warning if the key is removed and the driver leaves the vehicle with the sunroof open.
    Wiper and Washer Wiper (Low / High / Intermittent / Auto) The IBU receives the wiper switch signal over the B-CAN and sends data to the wiper motor (built-in) via LIN communication.
    Front Washer The IBU sends the washer switch signal to the front washer motor.

  2. Smart Key Module (SMK) Functions

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

  3. Tire Pressure Monitoring System (TPMS) Functions

    The Tire Pressure Monitoring System continuously monitors the pressure and temperature inside the tire to warn the driver of tire pressure changes that may affect vehicle driving conditions. The TPMS control module analyzes data from the Wheel Electronic (WE) sensor attached inside each wheel, determines tire condition, and generates the signal required to control the warning lamp.

Communication Network Diagram

Abbreviation Description
ACU Airbag Control Unit
AFT Adaptive Front Lighting System
AMP Amplifier
AUDIO Audio head unit
AVM Around View Monitor
B_CAN Body Controller Network
BCW Blind-Spot Collision Warning
C_CAN Chassis Controller Area Network
CDP CD Player
CLU Cluster Module
DATC Dual Automatic Temperature Control
DDM Driver door module
ECM Engine Control Module
F_PUMP Fuel Pump Control Module
HUD Projection Display
IBU Intelligent Body Control Unit
ICU (Intensive Care Unit) Integrated Central Control Unit
IFB Interface Unit
IMS Integrated Memory System
LDW Lane Departure Warning
LKA Ground care assistance
M_CAN Multimedia Controller Network
MDPS Motor Driven Power Steering
MFC Multi-Function Camera
MTS Manual Temperature Control
ORV Passenger Sensing System
P_CAN Power Train Controller Area Network
PCM Powertrain Control Module
PTG Power Liftgate Module
RVM Rear View Monitor
CCS Smart Cruise Control
SKM Steering Column Module
TCM Transmission Control Module
VDC Vehicle Dynamic Control
VPC Wireless 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 clip (B).

  4. Disconnect the connectors of the integrated body control unit (A).

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

  6. Remove the wire harness clip (A) from the integrated body control unit.

Installation

  1. Install the wire harness clip to the integrated body control unit.

  2. Install the integrated body control unit.

  3. Connect the connectors to the integrated body control unit.

  4. Connect the blower motor connector and secure it.

  5. Install the glove box housing.

  6. Connect the negative (-) battery terminal.

BCM Diagnosis Using KDS

  1. In the body electrical system, faults can be quickly diagnosed using the Korean Diagnostic System (KDS).

    The Diagnostic System (KDS) provides the following information.

    1. Self-Diagnosis: Checks malfunction and Diagnostic Trouble Code (DTC)

    2. Current Data: Check the system input/output status.

    3. Actuation Test: Check the system operating status

    4. Additional function: Control of other functions, including the setting parameter system and zero point adjustment.

  2. Select "Vehicle Model" and "Integrated Body Control Unit (IBU)" to be checked in order to inspect the vehicle with the tester.

  3. Select the "Current Data" menu to view the current input/output data status.

  4. To forcibly activate the input value of the module under test, select the "Activation Test" option.

  5. To change a user setting, select "User Settings".

Test yourself

A quick Kia Stinger CK quiz: every answer comes with an explanation and a link to the manual page.