Components of esp system

Слайд 4

VARIANT CODING
Perform the variant coding if there is a ESP OFF

W/L on with a ‘C1702
(Variant Coding Error)’ after replacing a ECM,TCM or ESPCM.

Слайд 5

Construction
HYDRAULIC CONTROL UNIT

Слайд 6

Prevent a pressure overshoot or undershoot → Control range decrease
-

Noise : Pulse-Up Noise decrease
- Enhanced Pedal Feeling

On/Off

LFC

Slip

LFC Control Range

On/Off Control Range

Effect of LFC (Linear Flow Control)

LFC (Linear Flow Control)

Слайд 7

ACTUATION TEST
PWM control
PWM control
ON/OFF control
ON/OFF control

Слайд 8

HECU
Pressure sensor
Operating condition
HYDRAULIC BRAKE ASSIST
- over 30 bar - over

2,200 bar/sec - over 20 km/h

Слайд 9

INPUTS AND OUTPUTS

Слайд 10

ACTIVE WHEEL SPEED SENSOR
- Type: Hall Effect
- Output signal: Digital (Open Collector Type

circuit integrated)
- Good characteristics against temperature variation and noise
- Low RPM Detection: 0 RPM can be detected
- Air gap sensitivity: stable output pulse against air-gap change
Supplying power: DC 12V

Слайд 11

ACTIVE WHEEL SPEED SENSOR
Inspection

Слайд 12

YAW RATE & LATERAL G SENSOR
Appearance

Слайд 13

Sensor specification
a. Yaw Rate Sensor Specification
Measuring Range : ±100˚/s
Resolution

: ± 0.3˚/s
Output Voltage Range : 0.5 ~ 4.5V
Sensitivity : 18 mV / (°/s)
b. Lateral G (Acceleration) Sensor Specification
Measuring Range : ±1.8 g (±1.5G)
Resolution : ± 0,005 g
Output Voltage Range : 0.5 ~ 4.5 V
Sensitivity : 1V/g

YAW RATE & LATERAL G SENSOR

Слайд 14

Pin layout
[Sensor connector - Male side]
YAW RATE & LATERAL G SENSOR

Слайд 15

Sensor Output
[Pin1- Reference voltage of the sensor]
[Pin2- Bite : for self

test]

IG ON

YAW RATE & LATERAL G SENSOR

Слайд 16

Sensor Output
[Pin4 - Output of Yaw Rate]
[Pin3 - sensor power]
YAW RATE

& LATERAL G SENSOR

Слайд 17

Sensor Output
[Pin5 - Lateral G sensor output]
[Lateral G sensor output: 90˚

to the right]

YAW RATE & LATERAL G SENSOR

Слайд 18

Sensor self-test (Yaw rate sensor)
Pin2 - Bite
Pin 4- Yaw rate sensor

output

YAW RATE & LATERAL G SENSOR

Слайд 19

Sensor self-test (Lateral G sensor)
Pin2 - Bite
Pin 5- Lateral G sensor

output

YAW RATE & LATERAL G SENSOR

Слайд 20

Current data & DTC
YAW RATE & LATERAL G SENSOR

Слайд 21

C1282 (Reference voltage/Yaw/Lateral G Sensor short to GND)
Current data & DTC
YAW

RATE & LATERAL G SENSOR

Слайд 22

C1283 (BITE short to GND)
Current data & DTC
YAW RATE & LATERAL

G SENSOR

Слайд 23

[When the BITE(Pin2) short to GND]
Current data & DTC
[When the BITE

is normal]

Lateral G sensor output

YAW RATE & LATERAL G SENSOR

Слайд 24

Current data & DTC
Yaw rate sensor output
[When the BITE(Pin2) short to

GND]

[When the BITE is normal]

2.5V without wave pattern

YAW RATE & LATERAL G SENSOR

Слайд 25

STEERING ANGLE SENSOR
Appearance
Maker : RUF (Germany)
Installation : Steering wheel

Слайд 26

Hi-scan data
STEERING ANGLE SENSOR

Слайд 27

Steering angle calibration
Suspension analysis for steering angle calibration or wheel in

straight-ahead position. A prolonged straight-ahead drive can also be used during calibration to determine the steering wheel center position.
Calibration of the wheel angle sensor in straight-ahead position. (An incorrect calibration will set a fault code in the fault code memory.)

±5° or less

STEERING ANGLE SENSOR

Слайд 28

Steering angle calibration
- Steering angle sensor calibration : After SAS replacement

or clock spring replacement

STEERING ANGLE SENSOR

Components of esp system

Содержание

VariationLine-up (BOSCH 8 ABS/ESP)S: Standard, O: Option