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

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.
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).
Other information:
Troubleshooting
Problem Symptoms Table
Before replacing or repairing air conditioning components,
first determine if the malfunction is due to the refrigerant charge, air
flow or compressor.
Use the table below to help you find the cause of the
problem.
Description
The ambient temperature sensor is located inside the side
mirror and detects ambient air temperature. It is a negative type
thermistor; resistance will increase with lower temperature, and
decrease with higher temperature.
The sensor output will be used for discharge temperature
control, temperature regulation door control,