SSANGYONG Rexton 2004 Service Manual page 786

8E2-11
When equipped with ABS, the braking force at each wheel will be controlled with 3-channel 4-sensor method. And when
equipped with ESP, 4 wheels will be controlled independently with 4-channel method. (When controlling ABS system
only, it will be operated with 3-channel method.) When compared to the vehicle equipped with ABS/EBD only, the
internal hydraulic circuit has a normally-open separation valve and a shuttle valve in primary circuit and in secondary
circuit. When the vehicle brakes are not applied during engine running or when applying the non-ABS operating brakes,
the normally-open separation valve and the inlet valve are open, whereas the normally-closed shuttle valve and the outlet
valve are closed. When the ESP system is operating, the normally-open separation valve will be closed by the solenoid
valve operation and the hydraulic circuit will be established by the shuttle valve. Then, the inlet and outlet valves will be
closed or open depending on the braking pressure increase, decrease or unchanged conditions. For details, refer to
"Hydraulic circuit by ESP operation range".
The warning lamp comes on and warning beep sounds when the ESP is operating
When the ESP operates during vehicle movement, the ESP warning lamp on the instrument panel flickers and beep
comes on every 0.1 seconds. The ESP operation shows that the vehicle stability is extremely unstable and it is used to
warn the driver. The ESP system is just a supplementary system for the vehicle motion and it cannot control the vehicle
when it exceeds the physical limits. Do not solely rely on the system but be advised to drive the vehicle safely.
Driving feeling when the ESP is operating
When the ESP system activates, the driving feeling can be different depending on vehicle driving conditions. For example,
you will feel differently when the ESP system is activated during when ABS is operating with the brakes applied and
when brakes are not applied on a curve. Thus, the ESP system would make the driver feel more abruptly when the
brakes are applied during the ESP system activation.
Noise and vibration that driver senses when the ESP is operating
The ESP system may transfer noise and vibration to the driver due to the pressure changes caused by the motor and
valve operations in a very short period of time. Extreme cornering will trigger the ESP operation and this will make the
driver feel noise and vibration due to sudden brake application. Also, the ESP system controls the engine output. So, the
driver may notice the engine output decrease even when the accelerator pedal is being applied.
ESP SYSTEM
CHANGED BY
REXTON SM - 2004.4 EFFECTIVE DATE
AFFECTED VIN