SSANGYONG 2004 Rexton 2.7XDi Workshop Manual page 1044

SYSTEM CONTROL
ECPS system, according to the vehicle speed, enables to
achieve proper steering characteristics by controlling hydrau-
lic pressure to reaction plunger located in input shaft of power
steering gear box. In other words, ECPS control unit enhances
the parking conveniences by controlling duty type current
control. It provides heavy steerability with low current as the
vehicle speed increases. And, it provides light steerability with
high current as the vehicle speed decreases.
1. During parking and low speed driving
During parking and driving in low speed, the control unit supplies approx. 1 A of electric current to solenoid valve. Then,
the spool located in PCV compresses the upper spring and elevates upward and, the working pressure from oil pump (A
port) is not able to flow to the reaction plunger (C port). As a result, the pressing force from reaction plunger disappears
and the steerability enhances.
Spring
Spool
Connector
Solenoid valve
ECPS (Electronic Control Power Steering)
REXTON SM - 2004.4
PCV
Balance line
Filter
Pressure
Reaction device
Reaction line
Pinion valve
Plunger
Vehicle speed [km/h]
Y220_06B007
Valve body
Right
cylinder
Left
cylinder
Steering gear box
Y220_06B008
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
6B-7