Kia Picanto: Smart Key System / Smart Key Unit

Kia Picanto JA 2017-2025 Service & Repair 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	-
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	-
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.	Disconnect the smart key unit 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 floor console assembly. (Refer to Body - "Floor Console Assembly")

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

Interior 2 Antenna

1.	Disconnect the negative (-) battery terminal.

2.	Remove the rear seat cushion assembly. (Refer to Body - "Rear Seat Assembly")

3.	Remove the interior 2 antenna (A) after loosening the mounting nuts and disconnecting the connector.

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.

Buzzer

1.	Disconnect the negative (-) battery terminal.

2.	Remove the left front wheel guard. (Refer to Body - "Front Wheel Guard")

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 tailgate trim. (Refer to Body - "Tailgate Trim")

3.	Disconnect the tailgate outside handle assembly connector (A).

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

5.	Disconnect the tailgate open switch connector (A).

6.	Remove the tailgate open switch (B) 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 floor console assembly.

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

Interior 2 Antenna

1.	Install the interior 2 antenna.

2.	Install the rear seat cushion assembly.

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 left front wheel guard.

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 after connecting the connector.

2.	Install the tailgate outside handle assembly.

3.	Connect the tailgate outside handle assembly connector.

4.	Install the tailgate trim.

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

Smart Key

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Smart Key Diagnostic

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