SsangYong Stavic / SsangYong Rodius (2005 year). Manual

ABS/ESP SYSTEM

STAVIC - 2004.09

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

Pressure

sensor

Damper

(primary circuit)

Damper

(secondary circuit)

Separation

valve (NO)

Shuttle

valve

Low pressure

accumulator

Damping chamber

Pump

Separation valve
(NO)

Shuttle valve

inlet valve

(NO)

FL inlet

valve

(NO)

inlet valve

(NO)

inlet valve

(NO)

outlet

valve(NC)

outlet

valve(NC)

outlet

valve(NC)

outlet

valve(NC)

Wheel (FR)

Wheel (FL)

Wheel (RR)

Wheel (RL)

5. HYDRAULIC CIRCUIT DIAGRAM

ABS/ESP SYSTEM

STAVIC - 2004.09

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

System Overview

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.

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.

ABS/ESP SYSTEM

STAVIC - 2004.09

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

(1) ESP Hydraulic unit in idling and normal braking position

In this position, the separation valve and the inlet valve are open (normal open), the electrically operated shuttle valve and
the outlet valve are closed. When the brake is applied under these conditions, the brake fluid will be sent to each wheel
via the separation valve and inlet valve.

Outlet valve

Separation valve

Inlet valve

Low pressure

chamber

Shuttle valve

Pump

SsangYong Stavic / SsangYong Rodius (2005 year). Manual - part 412