SsangYong Korando III (2010 year). Manual - part 556

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3) HOLD (ESP is working) Mode

The Inlet valve and outlet valve will be closed to maintain the pressure in the hydraulic circuit applied at 

the wheels. By closing the valves, the hydraulic pressure at the wheels will not be lost or supplied any 

more. During ESP operation, the separation valve closes and only the shuttle valve at the pump opens.

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4) RISE (ESP is working) Mode

The shuttle valve and inlet valve will be open and the separation valve and outlet valve will be closed. 

Then, the pump is operated. When ESP operates while the ABS is operating, the pressure will be 

increased continuously until just before the corresponding wheel gets locked.

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5) Hydraulic Circuit of HBA

The above figure shows one front and one rear wheel and the same hydraulic circuit forms as in the ESP 

operation. When HECU recognizes that it is an emergency and it is required for hard braking, depending 

on the pressure value of the brake pressure sensor and pressure changes caused by the pressure sensor 

timing, it operates the pump immediately to apply the brake pressure at the wheels. Then, the pressure in 

the pump increases until just before the corresponding wheel gets locked. The motor still keeps rotating 

and the outlet valve and the separation valve will stay closed. When the wheel starts to lock, the HBA 

function cancels and switches to ABS operation.

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7. CIRCUIT DIAGRAM

Wheel speed sensor, Stop lamp switch, Self diagnostic connector, Warning lamp (ABS/ESP)

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