Kia Rio: Smart Key System / Smart Key Unit

Kia Rio 2017-2024 YB Service Manual / Body Electrical System / Smart Key System / Smart Key Unit

Components and components location

Components

Connector Pin Information

No.	Connector A	Connector B	Connector C
1	-	IGN2 Relay_output	Battery (+)_Signal
2	SSB Switch1 signal_input	P-CAN (Low)	-
3	Driver door outside handle switch_input	P-CAN (High)	Immobilizer antenna (Power)_output
4	-	C-CAN (High)	Driver outside handle antenna (Power)_output
5	-	C-CAN (Low)	Passenger outside handle antenna (Power)_output
6	-	SSB Amber illumination_output	Bumper antenna (Power)_output
7	RPM Signal_input	-	Interior antenna 1 (Power)_output
8	Start signal feedback_input	SSB Illumination (+)_output	Interior antenna 2 (Power)_output
9	IGN2	ESCL Enable_output	Interior antenna 3 (Power)_output
10	-	Battery (+)_Power	-
11	Starter relay_output	IGN1 Relay_output	-
12	Ground_Power1	ESCL (COM)	-
13	SSB Switch2 signal_input	EMS (COM)	ESCL_Ground (-)_output
14	Assist door outside handle switch_input	-	Immobilizer antenna (Ground)_output
15	-	SSB Illumination (-)_output	Driver outside handle antenna (Ground)_output
16	AT : "P" Positon_input MT : Clutch switch_input	SSB Illumination (Blue)_output SSB Illumination (Red)_output	Passenger outside handle antenna (Ground)_output
17	ESCL Unlock switch_input	-	Bumper antenna (Ground)_output
18	Wheel speed sensor_input	Exterior buzzer_output	Interior antenna 1 (Ground)_output
19	ACC Signal_input	-	Interior antenna 2 (Ground)_output
20	IGN1	ESCL (+)_output	Interior antenna 3 (Ground)_output
21	Brake switch_input		-
22	ACC Relay_output		Ground_Power2

Schematic diagrams

Circuit Diagram

Repair procedures

Removal

Put on gloves to prevent hand injuries.

•	Use a plastic panel removal tool to remove interior trim pieces without marring the surface.

•	Take care not to bend or scratch the trim and panels.

Smart Key Unit

1.	Disconnect the negative (-) battery terminal.

2.	Remove the glove box. (Refer to Body - "Glove Box")

3.	Remove the smart key unit (B) after disconnecting the connectors (A).

4.	Remove the smart key unit (A) after loosening the mounting nuts.

Interior 1 Antenna

1.	Disconnect the negative (-) battery terminal.

2.	Remove the heater and A/C controll unit. (Refer to Heating,Ventilation, Air Conditioning - "Heater & A/C Control Unit (Manual)") (Refer to Heating, Ventilation, Air conditioning - "Heater & A/C Control Unit (FATC)")

3.	Remove the interior 1 antenna (A) after loosening the mounting screws and disconnecting the connector (B).

Interior 2 Antenna

1.	Disconnect the negative (-) battery terminal.

2.	Remove the floor console assembly. (Reger to Body - "Floor Console Assembly")

3.	Disconnect the interior 2 antenna connector (A).

4.	Remove the interior 2 antenna (A) after loosening the mounting screws.

Tailgate Antenna

1.	Disconnect the negative (-) battery terminal.

2.	Remove the rear transverse trim. (Reger to Body - " Rear Transverse Trim")

3.	Remove the tailgate antenna (A) after loosening the mounting nuts and disconnecting the connector (B).

Rear Bumper Antenna

1.	Disconnect the negative (-) battery terminal.

2.	Remove the rear bumper assembly. (Refer to Body - "Rear Bumper Assembly")

3.	Remove the rear bumper antenna (A) after loosening the mounting screws and disconnecting the connector (B).

Buzzer

1.	Disconnect the negative (-) battery terminal.

2.	Remove the front bumper assembly. (Refer to Body - "Front Bumper Assembly")

3.	Remove the buzzer (A) after disconnecting the connector.

Door Outside Handle

1.	Disconnect the negative (-) battery terminal.

2.	Remove the front door outside handle. (Refer to Body - "Front Door Outside Handle")

Tailgate Open Switch

1.	Disconnect the negative (-) battery terminal.

2.	Remove the back view camera assembly. (Refer to Body Electrical System - "Back View Camera System")

3.	Remove the tailgate open switch assembly (A) after loosening the mounting screws.

Inspection

Smart Key Unit

(Refer to Smart Key System - "Smart Key Diagnostic")

Smart Key Switch

(Refer to Smart Key System - "Smart Key Diagnostic")

Antenna

(Refer to Smart Key System - "Smart Key Diagnostic")

Door Outside Handle

1.	Disconnect the front door outside handle connector (A).

Check for continuity between terminals No 2 and No 4.

No.	Description
1	Door antenna 1
2	Door lock/unlock button 1
3	Door antenna 2
4	Door lock/unlock button 2

Tailgate Open Switch

1.	Check for continuity between the tailgate open switch terminals.

2.	If continuity is not specified, inspect the switch

Installation

Smart Key Unit

1.	Install the smart key unit after connecting the connectors.

2.	Install the glove box.

3.	Connect the negative (-) battery terminal and check the smart key system.

Interior 1 Antenna

1.	Install the interior 1 antenna.

2.	Install the heater and A/C controll unit.

3.	Install the negative (-) battery terminal and check the smart key system.

Interior 2 Antenna

1.	Install the interior 2 antenna.

2.	Install the floor console assembly.

3.	Connect the negative (-) battery terminal and check the smart key system.

Tailgate Antenna

1.	Install the tailgate antenna.

2.	Install the rear transverse trim.

3.	Connect the negative (-) battery terminal and check the smart key system.

Rear Bumper Antenna

1.	Install the rear bumper antenna.

2.	Install the rear bumper assembly.

3.	Connect the negative (-) battery terminal and check the smart key system.

Buzzer

1.	Install the buzzer.

2.	Install the front bumper assembly.

3.	Connect the negative (-) battery terminal and check the smart key system.

Door Outside Handle

1.	Install the front door outside handle.

2.	Connect the negative (-) battery terminal and check the smart key system.

Tailgate Open Switch

1.	Install the tailgate open switch assembly.

2.	Install the back view camera assembly.

3.	Install the tailgate outside handle assembly.

4.	Connect the tailgate outside handle assembly connector.

5.	Install the tailgate trim.

6.	Install the negative (-) battery terminal and check the smart key system.

Smart Key

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Smart Key Diagnostic

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