Smart Key Unit
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


Repair Procedures
Removal
Integrated Body Control Unit (BCM)
Disconnect the negative (-) battery terminal.
Remove the glove box housing.
(Refer to Body - "Glove Box Housing")
Disconnect the blower motor connector (A) after removing the clip (B).

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

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

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

Interior 1 Antenna
Disconnect the negative (-) battery terminal.
Remove the floor console assembly.
(Refer to Body - Floor Console Assembly)
Remove the interior antenna 1 (A) after disconnecting the connector and loosening the mounting screws.

Interior 2 Antenna
Disconnect the negative (-) battery terminal.
Remove the floor console assembly.
(Refer to Body - Floor Console Assembly)
Remove the interior 2 antenna (A) after disconnecting the connector and loosening the mounting nuts.

Trunk Antenna
Disconnect the negative (-) battery terminal.
Remove the rear crossmember trim.
(Refer to Body - "Rear Crossmember Trim")
Remove the luggage compartment door antenna (A) after disconnecting the connector and loosening the mounting nuts.

Rear Bumper Antenna
Disconnect the negative (-) battery terminal.
Remove the rear bumper beam assembly.
(Refer to Body - "Rear Bumper Beam Assembly")
Remove the rear bumper antenna (A) after loosening the mounting screws.

Buzzer
Disconnect the negative (-) battery terminal.
Remove the front wheel guard [LH].
(Refer to Body - "Front Wheel Guard")
Remove the buzzer (A) after disconnecting the connector.

Outside Door Handle
Disconnect the negative (-) battery terminal.
Remove the front door outside handle.
(Refer to Body - "Front Door Outside Handle")


Liftgate Opener Switch
Disconnect the negative (-) battery terminal.
Remove the rear back panel of the tailgate.
(Refer to Body - "Rear Door Trim Panel")
Disconnect the license plate lamp connectors (A).

Remove the tailgate outside handle assembly (A) after loosening the mounting screws.

Remove the tailgate opening switch (A) after loosening the mounting screws.

Inspection
Smart Key Unit
(Refer to Smart Key System - Smart Key Diagnosis)
Smart Key Switch
(Refer to Smart Key System - Smart Key Diagnosis)
Antenna
(Refer to Smart Key System - Smart Key Diagnosis)
Outside Door Handle
Disconnect the front door outside handle connector (A).

Check the continuity of the circuit between terminals No. 3 and No. 6.

No Description 1 Door Antenna (+) 2 Pocket LED Light (+) 3 Door Lock/Unlock Button 4 Door Antenna (-) 5 Pocket LED Light (-) 6 Door Lock/Unlock Button Switch Ground

Liftgate Opener Switch
Check the continuity between the terminals of the liftgate opener switch.

If continuity is not as specified, inspect the switch.

Installation
Integrated Body Control Unit (BCM)
Install the wire harness clip to the integrated body control unit.
Install the integrated body control unit.
Connect the connectors to the integrated body control unit.
Connect the blower motor connector and secure it.
Install the glove box housing.
Connect the negative (-) battery terminal and check the smart key system.
Interior 1 Antenna
Install the inside antenna 1 after connecting the connector.
Install the floor console assembly.
Connect the negative (-) battery terminal and check the smart key system.
Interior 2 Antenna
Install the inside antenna 2 after connecting the connector.
Install the floor console assembly.
Connect the negative (-) battery terminal and check the smart key system.
Trunk Antenna
Install the luggage compartment door antenna after connecting the connector.
Install the rear cross trim.
Connect the negative (-) battery terminal and check the smart key system.
Rear Bumper Antenna
Install the rear bumper antenna after connecting the connector.
Install the rear bumper beam assembly.
Connect the negative (-) battery terminal and check the smart key system.
Buzzer
Install the buzzer after connecting the connector.
Install the front wheel guard [LH].
Connect the negative (-) battery terminal and check the smart key system.
Outside Door Handle
Install the front door outside handle.
Connect the negative (-) battery terminal and check the smart key system.
Liftgate Opener Switch
Install the luggage compartment door opener switch.
Install the rear door outside handle assembly.
Connect the license plate lamp connectors.
Install the rear panel of the rear door.
Connect the negative (-) battery terminal and check the smart key system.
Test yourself
A quick Kia Stinger CK quiz: every answer comes with an explanation and a link to the manual page.