Hyundai i-30: ABS (Anti-Lock Brake System) / Repair procedures

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

Remove the reservoir cap and fill the brake reservoir with brake fluid.

•	If there is any brake fluid on any painted surface, wash it off immediately.

•	When pressure bleeding, do not depress the brake pedal.

•	Recommended fluid........ DOT3 or DOT4

2.	Connect a clear plastic tube to the wheel cylinder bleeder plug and insert the other end of the tube into a half filled clear plastic bottle.

3.	Connect the diagnostic tool to the data link connector located underneath the dash panel.

Select and operate according to the instructions on the diagnostic tool screen

•	You must obey the maximum operating time of the ESC motor with the diagnostic tool to prevent the motor pump from burning.

1)	Select vehicle name.

2)	Select ABS/ESC system.

3)	Select HCU air bleeding mode.

5.	Pump the brake pedal several times, and then loosen the bleeder screw until fluid starts to run out without bubbles. Then close the bleeder screw (A). [Front] [Rear]

6.	Repeat the procedure for wheel in the sequence shown below until air bubbles no longer appear in the fluid.

7.	Refill the master cylinder reservoir to MAX (upper) level line.

Schematic diagrams

Schematic Diagrams [Without EPB] [With EPB] Termianal Function [Without EPB] Pin No Description Current 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...

Troubleshooting

Standard Flow of Diagnostic Troubleshooting Notes With Regard To Diagnosis The phenomena listed in the following table are not abnormal...

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