Hyundai i-30: ABS (Anti-Lock Brake System) / Schematic diagrams

Hyundai i30 (PD) 2018-2024 Service Manual / Brake System / ABS (Anti-Lock Brake System) / Schematic diagrams

Schematic Diagrams

[Without EPB]

[With EPB]

Termianal Function

[Without EPB]

Pin No	Description	Current
Pin No	Description	Max	Min
13	Ground for recirculation pump	39 A	10 A
1	Voltage supply for pump motor	39 A	10 A
25	Voltage supply for solenoid valves	15 A	2 A
38	Ground for solenoid valves and ECU	15 A	2 A
22	FL Wheel speed sensor signal	16.8 mA	5.9 mA
33	RL Wheel speed sensor power	16.8 mA	5.9 mA
19	RR Wheel speed sensor power	16.8 mA	5.9 mA
18	FR Wheel speed sensor power	16.8 mA	5.9 mA
6	FR Wheel speed sensor signal	16.8 mA	5.9 mA
14	CAN LOW	30 mA	20 mA
34	FL Wheel speed sensor power	16.8 mA	5.9 mA
20	RL Wheel speed sensor signal	16.8 mA	5.9 mA
32	Voltage for hybrid ECU	1 A	500 mA
31	RR Wheel speed sensor signal	16.8 mA	5.9 mA
30	Brake light switch	10 mA	5 mA
26	CAN HIGH	30 mA	20 mA
27	Wheel speed sensor output	Open Draim
4	ESS output	20mA	5mA
23	Clutch switch (MT Only)	10 mA	5 mA
10	Parking brake switch	10 mA	5 mA
21	L-CAN LOW	30 mA	20 mA
9	L-CAN HIGH	30 mA	20 mA

[With EPB]

Pin No	Desciption	Current
Pin No	Desciption	Max	Min
1	Voltage supply for pump motor	39A	10A
2	RR EPB motor power	30A	-
3	RR EPB motor ground	30A	-
4	-	-	-
5	Local CAN High	30 mA	20 mA
6	Electric parking brake signal 1	20 mA	-
7	Electric parking brake signal 2	20 mA	-
8	Electric parking brake signal 3	20 mA	-
9	Electric parking brake signal 4	20 mA	-
10	-	-	-
11	-	-	-
12	RL EPB motor ground	30A	-
13	RL EPB motor power	30A	-
14	Ground for solenoid valves and ECU	30A	10A
15	-	-	-
16	-	-	-
17	FR Wheel speed sensor signal	16.8 mA	5.9 mA
18	-	-	-
19	ESP OFF switch signal	10 mA	5 mA
20	Local CAN Low	30 mA	20 mA
21	Clutch stroke sensor signal	-	-
22	-	-	-
23	N' Signal	200 mA	100 mA
24	-	-	-
25	FR Wheel speed sensor power	16.8 mA	5.9 mA
26	RR Wheel speed sensor power	16.8 mA	5.9 mA
27	RL Wheel speed sensor signal	16.8 mA	5.9 mA
28	-	-	-
29	FL Wheel speed sensor signal	16.8 mA	5.9 mA
30	Voltage supply for solenoid valves	30A	10A
31	-	-	-
32	Wheel speed sensor output	Open drain	-
33	-	-	-
34	Auto holding ON/OFF switch signal	10 mA	5 mA
35	Brake light switch	10 mA	5 mA
36	RR Wheel speed sensor signal	16.8 mA	5.9 mA
37	IGN 1	5A	1A
38	RL Wheel speed sensor power	16.8 mA	5.9 mA
39	FL Wheel speed sensor power	16.8 mA	5.9 mA
40	-	-	-
41	-	-	-
42	-	-	-
43	-	-	-
44	C-CAN High	30 mA	20 mA
45	C-CAN Low	30 mA	20 mA
46	Voltage supply for pump motor	40A	10A

Description and operation

Description This specification applies to HCU (Hydraulic Control Unit) and ECU (Electronic Control Unit) of the HECU. (Hydraulic and Electronic Control Unit) This specification is for the wiring design and installation of ABS ECU...

Repair procedures

Inspection ABS System Bleeding This procedure should be followed to ensure adequate bleeding of air and filling of the ESC unit, brake lines and master cylinder with brake fluid...

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