Hyundai Accent Manuals

Hyundai Accent: Smart Key System / Smart Key Unit

Hyundai Accent (HC) (2017 - 2022) Service Manual / Body Electrical System / Smart Key System / Smart Key Unit

- Components

Connector Pin Information

No	Connector A	Connector B	Connector C
1	-	IGN 2 Relay output	Battery (+)
2	SSB Switch 1 input	P CAN Low	-
3	Driver outside handle switch input	P CAN High	Immobilizer antenna power output
4	-	B CAN High	Outside handle antenna driver power output
5	-	B CAN Low	Outside handle antenna assist power output
6	-	SSB Illumination (amber) output	Bumper antenna power output
7	RPM input	-	Interior antenna 1 power output
8	Start feedback input	SSB Illumination (+) output	Interior antenna 2 power output
9	IGN 2	ESCL Enable output	Interior antenna 3 power output
10	-	Battery (+) power	-
11	Starter relay output	IGN 1 Relay output	-
12	Power1 ground	ESCL COM	-
13	SSB Switch 2 input	EMS COM	ESCL (-) Output
14	Assist outside handle switch input	-	Immobilzer antenna ground output
15	-	SSB Illumination (-)output	Outside handle antenna drvier ground output
16	P Position input / Clutch switch input	SSB Illumination (Blue) output SSB Illumination (Red) output	Outside handle antenna assist ground output
17	ESCL Unlock switch input	-	Bumper antenna ground output
18	Wheel speed sensor input	Exterior buzzer output	Interior antenna 1 groud output
19	ACC input	-	Interior antenna 2 groud output
20	IGN 2	ESCL (+) output	Interior antenna 3 groud output
21	Brake switch input		-
22	ACC Relay output		Ground power 2

- Circuit Diagram

- Removal Smart Key Unit

1.Disconnect the negative (-) battery terminal.

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

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

Interior 1 Antenna

1.Disconnect the negative (-) battery terminal.

2.Remove the glove box upper cover.(Refer to Body - "Glove Box Upper Cover Assembly")

3.Remove the interior 1 antenna (A) after loosening the mounting screws (2EA) and disconnecting the connector (B).

Interior 2 Antenna

1.Disconnect the negative (-) battery terminal.

2.Remove the console rear complete assembly.(Refer to Body - "Floor Console Assembly")

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

Interior 3 Antenna

1.Disconnect the negative (-) battery terminal.

2.Remove the rear transvers trim.(Refer to Body - "Trunk Trim")

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

Exterior Bumper Antenna

1.Disconnect the negative (-) battery terminal.

2.Remove the rear bumper cover.(Refer to Body - "Rear Bumper Cover")

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

Buzzer

1.Disconnect the negative (-) battery terminal.

2.Remove the front bumper cover.(Refer to Body - "Front Bumper Cover")

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

Door Outside Handle

1.Disconnect the negative (-) battery terminal.

2.Remove the front door trim.(Refer to Body - "Front Door Trim")

3.Disconnect the front door outside handle connector (A) and then remove the wiring mounting clip (B).

4.Remove the door outside handle cover (A) after seperating the plug hole from the door and loosening the mounting bolt.

5.Remove the outside handle (A) by sliding it rearward.

- 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).

2.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

- Installation Smart Key Unit

1.Install the smart key unit.

2.Install the smart key unit mounting bolts and connect the connector.

3.Install the driver side crash pad lower panel.

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

Interior 1 Antenna

1.Install the interior 1 antenna.

2.Install the crash pad center fascia panel.

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

Interior 2 Antenna

1.Install the interior 2 antenna.

2.Install the console rear complete assembly.

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

Interior 3 Antenna

1.Install the interior 3 antenna.

2.Install the rear transvers trim.

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

Exterior Bumper Antenna

1.Install the exterior bumper antenna.

2.Install the rear bumper cover.

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

Buzzer

1.Install the buzzer.

2.Install the front left wheel guide.

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

Door Outside Handle

1.Install the outside handle.

2.Install the door trim.

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

Description and Operation

Smart Key Diagnostic

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Ambient Temperature Sensor

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