SsangYong Actyon Sports II. Manual — part 166

13-11

4620-01

4) System Control

ECPS system, according to the vehicle speed,

enables to achieve proper steering

characteristics by controlling hydraulic

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.

▶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.

13-12

▶During high speed driving

During high speed driving, the control unit supplies weak electric current to solenoid valve. Then, the

spool located PCV moves from top to bottom, and the working pressure (A port) from oil pump is applied

to reaction plunger (C port ) through B port. As a result, the pressing force from reaction plunger against

input shaft is increased and the steerability becomes heavier.

13-13

4620-01

4. S.S.P.S (SPEED SENSITIVE POWER STEERING)

14-3

4170-09

1. SPECIFICATIONS

2. MAJOR CHANGES

Wheel assembly

16-inches silver

18-inches silver

18-inches hyper silver

PN: 41730-32000

PN: 41730-32200

PN: 41730-32300

- Added 18-inches hyper silver to wheel assembly
- Wheel offset and tire size are identical with existing specifications

Existing specifications

New specifications

Description

Specification

Tire

16 inch

225/75R 16

18 inch

255/60R 18

Tire inflation pressure

Front: 32 psi

Rear: 32 psi (44 psi: when the vehicle is fully laden

with luggage)

Wheel

16 inch

6.5J x 16

18 inch

7.5J x 18

Balance weight

16 inch

Inner: Attachment type

Outer: Clip type

18 inch

Inner: Attachment type

Outer: Attachment type

Tightening torquse of wheel bolt

127.4 ~ 156.8 Nm