Kia Forte: Smart Key System / Smart Key Unit

Kia Forte 2019-2024 (BD) Service Manual / Body Electrical System / Smart Key System / Smart Key Unit

Components and components location

Components

[4DR]

1. Integrated body control unit (IBU)
2. Buzzer

3 .Trunk lid handle

[5DR]

1. Integrated body control unit (IBU)
2. Buzzer

3 .Trunk lid handle

Schematic diagrams

Connector and Terminal function

No.	Connector A	Connector B	Connector C
1	-	Front washer switch_input	Driver outside handle switch_input
2	Puddle pocket lamp_output	-	Passenger outside handle switch_input
3	-	-	FOB key searching signal_output (to WPC)
4	-	-	-
5	External buzzer_output	-	RPM_input
6	Rear center seat belt indicator_output	Wiper parking switch_input	SSB illumination (+)_output
7	Rear left seat belt indicator_output	Security indicator_output	ACC relay_output
8	Rear right seat belt indicator_output	Brake switch_input	IGN 1 relay_output
9	Passenger seat belt indicator_output	Haptic_output	IGN 2 relay_output
10	Headlamp switch High_input	Front wiper volume switch_input	Start relay_output
11	Outside mirror unfolding_output	-	Drive outside handle switch_output
12	Outside mirror folding_output	-	Passenger outside handle switch_output
13	-	Dedicated DRL	Interior antenna 1 (+)_output
14	PDW alarm_output	PDW option_input	Interior antenna 2 (+)_output
15	PDW-R power_output	B-CAN_Low	Interior trunk antenna 3 (+)_output
16	PDW-F power_output	B-CAN_High	Rear bumper antenna (+)_output
17	PDW power_input	Power_ground	-
18	ESCL Enable_output	ECU_ground	-
19	ESCL unlock switch_input	-	-
20	ESCL (-)_output	-	-
21	-	-	SSB switch 1_input
22	KLINE_immobilizer	-	SSB switch 2_input
23	-	PDW switch indicator_output	AT : 'P' position_input MT : IGN lock switch_input (clutch)
24	-	Front wiper switch_input	ESCL_COM
25	Sunroof status_input	-	Wheel speed sensor_input
26	PDW switch_input	Multifunction switch ground_input	-
27	-	Wiper power relay_output	-
28	-	Auto light sensor ground_output	-
29	-	Auto light sensor signal_input	-
30	LIN 1 (PDW)	Auto light sensor power_output	Start feedback_input
31	ESCL (+)_output	-	Driver outside handle switch antenna_output
32	Light switch_input	Front wiper high relay_output	Passenger outside handle switch antenna_output
33	Fog lamp switch_input	Front wiper low relay_output	Interior antenna 1 (-)_output
34	IGN 2_input	Front wiper low back up switch_input	Interior antenna 2 (-)_output
35	IGN 1_input	P-CAN_Low	Interior trunk antenna 3 (-)_output
36	ASS_input	P-CAN_High	Bumper antenna (-)_output
37	Power_battery (+)	-	-
38	ECU_battery (+)	-	-
39	Immobilizer antenna power_output	-	-
40	Immobilizer antenna ground_output	-	-

Repair procedures

Removal

Integrated Body Control Unit (IBU)

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

1.	Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel")

2.	Remove the IBU (B) by loosening the mounting bolt and nut after disconnecting the connector (A).

Buzzer

1.	Disconnect the negative battery terminal.

2.	Remove the under cover. Nu 2.0 MPI (Refer to Engine Mechanical System - "Engine Room Under Cover") Gamma 1.6 MPI (Refer to Engine Mechanical System - "Engine Room Under Cover")

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

Trunk Lid Handle

1.	Disconnect the negative battery terminal.

2.	Remove the trunk lid trim. (Refer to Body - "Trunk Lid Trim")

3.	Remove the inner rear combination lamp. (Refer to Lighting System - "Rear Combination Lamp")

4.	Remove the reflector (C) by loosening the nuts (B) after disconnecting the connector (A).

5.	Remove the rear view camera & trunk lid handle assembly (B) by loosening the screws after disconnecting the connector (A).

6.	Remove the rear view camera (B) and silicon packing (C) by loosening the screws from the trunk lid handle (A).

Tailgate Lid Handle

1.	Disconnect the negative battery terminal.

2.	Remove the tailgate back panel (Refer to Body - "Tailgate Back Panel")

3.	Loosen the tailgate garnish bracket mounting screws.

Remove the tailgate garnish bracket (B) by pushing the retaining hooks (A) in the direction of the arrow.

Be careful not to damage the retaining hooks (A).

5.	Disconnect the rear view camera connector (A).

6.	Remove the license plate lamp socket (A) by rotating it in the counterclockwise. [LH] [RH]

7.	Remove the tailgate garnish back panel (A) after loosening the mounting screws.

8.	Disconnect the tailgate lid handle connector (A).

9.	Remove the rear view camera & tailgate lid handle assembly (A) after loosening the mounting screws.

10.	Loosen the rear view camera (A) mounting screws.

11.	Remove the rear view camera (A) from the tailgate lid handle (B).

Installation

1.	Install in the reverse order of removal.

Inspection

Trunk Open Switch

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

2.	If continuity is not specified, inspect the switch.

Tailgate Open Switch

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

2.	If continuity is not specified, inspect the switch.

Smart Key Neutralization

1.	Connect the cable of KDS to the data link connector in driver side crash pad lower panel.

2.	After IG ON, select the "Neutralization mode".

Smart Key

Repair procedures Smart Key Smart Key Code Saving 1. Connect the VCIⅡ of KDS to the data link connector (16 pins) in driver side crash pad lower panel, turn the pow ...

Smart Key Antenna

Repair procedures Removal Interior Antenna 1 Take care not to bend or scratch the trim and panels. ...

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