SSANGYONG Rexton 2004 Service Manual page 798

Steering wheel angle
sensor connector
Steering wheel angle
The steering wheel angle sensor is integrated with the phototransistor and the LED and there is a slotted plate between
them. When the inner slotted plate rotates with the steering column shaft when the steering wheel is turned, the voltage
occurs through the holes. The detected voltage will be transmitted to the ESP unit as a pulse from the 3 terminals.
Then, the two voltage pulses are used to get the average value for detecting the steering wheel position and its angle
speed. And the other pulse is used for checking the alignment of the steering wheel.
Working voltage
Number of pulse per
revolution
Duty
High - V
Low - V
Detects steering wheel angle
and angular velocity as an av-
ST1 and ST2
erage value
Detects the center value of
STN
steering wheel
ESP SYSTEM
REXTON SM - 2004.4
Steering
Wheel
Angle
Sensor
(SWAS)
9 ~16 V
45 Pulses /1rev
Approx. 50 %
3.0 ~ 4.1 V
1.3 ~ 2.0 V
LED
Steering column
ESP
unit
With ESP
Center line of steering wheel
8E2-23
Phototransistor
Slotted plate
Y220_7A2030
Y220_7A2031
Y220_7A2032
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN