Hyundai Ioniq: Smart Key System / Smart Key Unit. Components and components location

Hyundai Ioniq (AE) 2017-2024 Service Manual / Body Electrical System / Smart Key System / Smart Key Unit. Components and components location

Components (1)

No	Connector A	Connector B	Connector C
1	Battery (+)_LOAD	IGN2 Relay output	Immobilizer antenna power input
2	Battery (+)_CPU	IGN1 Relay output	Wheel speed signal input
3	Antenna ground (Internal1)	-	SSB Switch1 signal input
4	-	-	-
5	Antenna ground (Internal2)	B-CAN (Low)	ESCL Unlock switch signal input
6	Antenna ground (Assist)	EMS CAN	P Position switch signal input
7	Antenna ground (Trunk)	B-CAN (High)	Brake switch signal input
8	Antenna ground (Driver)	B-CAN (Low)	Ignition 2 signal input
9	-	P-CAN (Low)	Ignition 1 signal input
10	SSB Illumination power (Output)	P-CAN (High)	Starter relay output
11	External buzzer output	-	Immoblizer antenna ground
12	ESCL Power output	ACC Relay output	RPM Signal input
13	-	-	SSB Switch2 signal input
14	Antenna power (Internal1)	Signal ground	Driver toggle button switch signal input
15	-	-	Assiste toggle button switch signal input
16	Antenna power (Internal2)	SSB ACC LED Output	Starter relay feedback signal input
17	Antenna power (Assist)	SSB IGN LED Output	Stop lamp fuse signal input
18	Antenna power (Trunk)	-	ACC Signal input
19	Antenna power (Driver)	-	-
20	-	SSB Illumination ground	Power ground
21	ESCL Enable output	-
22	ESCL Ground output	Wireless charging module output

Smart Key. Repair procedures

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Smart Key Unit. Schematic diagrams

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