SSANGYONG KYRON 2006, Repair Manual, Page: 421 / 1105

CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
ABS/ESP SYSTEM
KYRON SM - 2005.09
35
4890
BRAKE
A / BAG
A/T
M/T
CLUTCH
AXLE
SP
ST’NG
A / CON
T/C
1
2
3
1
2
3
Ground
Signal output
Power
Ground
Signal output
Power
< Primary pressure
sensor >
< Secondary
pressure sensor >
19
20
18
21
23
22
The ESP unit supplies around 5V power to two pres-
sure sensors installed on the ESP system when the
ignition switch is ON.
Each sensor’s pin no. 1 is its ground and pin no. 3
outputs the sensor output voltage to the ESP unit. When
the brake is not in operation, this voltage is about 0.5V
and, during the brake operation it increases linearly to
about 0.5 ~ 4.75V.
HBA operating conditions:
1. Pressure: 20 bar
2. Pressure changes: over 1500 bar/sec
3. Vehicle speed: over 7 km/h
< ESP unit >
Description
Pressure Sensor Circuit
The sensor consists of two ceramic
disks, one of which is stationary and
the other movable. The distance be-
tween these disks changes when
pressure is applied.
The pressure sensors operate on the
principle of changing capacitance
(a).
The distance (S) between the disks
and, thus, the capacitance changes
when pressure is applied to the mov-
able disk by a braking intervention.
The voltage value is approx. 0.5 V
when the brake is not operated.
Brake not
applied
Master
cylinder
When brake pressure is applied
from the master cylinder, the ce-
ramic disk moves towards the fixed
ceramic disk and the electric
charge volume changes accordingly.
The voltage value is linearly changed
from 0.5 V (brake not applied) to 4.
75 V (brake applied).
Brake
applied
Master
cylinder