SSANGYONG KYRON 2006, Repair Manual, Page: 415 / 1105

CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
ABS/ESP SYSTEM
KYRON SM - 2005.09
29
4890
BRAKE
A / BAG
A/T
M/T
CLUTCH
AXLE
SP
ST’NG
A / CON
T/C
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 un-
changed conditions.
For details, refer to “Hydraulic Pressure for each ESP Operating Range”.
11. HYDRAULIC PRESSURE FOR EACH ESP OPERATING RANGE
ESP Hydraulic unit in idling and normal braking po-
sition
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.
1 2
ESP Hydraulic unit (decreased pressure)
The pressure decreases just before the wheel speed
drops and the wheels. The inlet valve closes and the
outlet valve opens as in the ABS HECU and the oil is
gathered at the low pressure chamber while no addi-
tional oil is being supplied. Then the pump operates to
allow fast oil drainage.
Pump
L o w
pressure
chamber
Shuttle
valve
Separation
valve
Inlet
valve
Outlet
valve
L o w
pressure
chamber
Shuttle
valve
Pump
Separation
valve
Inlet
valve
Outlet
valve