Hyundai Genesis: ESC(Electronic Stability Control) System / EBD(Electronic Brake-force Distribution) Description and Operation

Hyundai Genesis (DH) 2013-2016 Service Manual / Brake System / ESC(Electronic Stability Control) System / EBD(Electronic Brake-force Distribution) Description and Operation

Operation

The EBD system (Electronic Brake force Distribution) as a sub-system of the ABS system is to control the maximum braking effectiveness by the rear wheels.

It further utilizes the efficiency of highly developed ABS equipment by controlling the slip of the rear wheels in the partial braking range.

The brake force moves closer to the optimum and is controlled electronically, thus being dispensed with the need for the proportioning valve.

The proportioning valve, because of a mechanical device, has limitations in achieving an ideal brake force distribution to the rear wheels as well as carrying out the flexible brake force distribution proportioning to the vehicle load or weight increasing. And in the event of malfunctioning, drivers cannot notice the failure.

EBD controlled by the ABS Control Module, calculates the slip ratio of each wheel at all times and controls the brake pressure of the rear wheels not to exceed that of the front wheels.

If the EBD fails, the EBD warning lamp (Parking brake lamp) lights up.

Advantages

-	Function improvement of the base-brake system.

-	Compensation for the different friction coefficients.

-	Elimination of the proportioning valve.

-	Failure recognition by the warning lamp.

Comparison between Proportioning Valve and EBD

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 ...

ESC Control Unit Repair procedures

Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the Engine room fuse & relay box (B) after removing the cover (A). 3. Disconnect the brake ...

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