Hyundai Elantra: ESC(Electronic Stability Control) System / Repair procedures

Inspection
ESC 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.
1.
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 GDS to the data link connector located underneath the dash panel.
4.
Select and operate according to the instructions on the GDS screen
   
You must obey the maximum operating time of the ESC motor with the GDS 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 Disc Brake]

[Rear Durm Brake]

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 Terminal Function Wire No.DesignationCurrentmaxmin13Ground for recirculation pump39 A10 A1Voltage supply for pump motor39 A10 A25Voltage supply for solenoid valves15 A2 A38Gro ...

Troubleshooting
Failure Diagnosis 1. In principle, ESC and TCS controls are prohibited in case of ABS failure. 2. When ESC or TCS fails, only the failed system control is prohibited. 3. However, when the ...

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