SsangYong Rodius (2013 year). Service manual - part 168

09-25

4891-01

▶DUMP (ESP is working) Mode

The pressure decreases just before the wheel speed drops and the wheels are locked. 

The inlet valve closes and the outlet valve opens as in the ESP HECU and the oil is gathered at the 

low pressure chamber while no additional oil is being supplied. Then the pump operates to allow fast oil

drainage. The shuttle valve and the separation valve do not operate while decompression.

09-26

▶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.

09-27

4891-01

▶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.

09-28

2) Electric Circuit Diagram

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

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