ESP ( E lectronic S tability P rogram)

APPLICATION OF NF ABS/ESP [ O: Optional Item, S: Standard Item, August 2004]

COMPONENTS OF ESP SYSTEM

CONCEPT OF ESP CONTROL

VARIANT CODING Variant coding

Procedure (Work instruction) VARIANT CODING Enter Connect a Hi-scan and select anti-lock brake system on the menu Connect a Hi-scan and select anti-lock brake system on the menu

VARIANT CODING Off the Hi-scan and turn ignition off and on Off the Hi-scan and turn ignition off and on Procedure (Work instruction)

VEHICLE DYNAMIC CONTROL

Sample1) In the event of oversteering

Sample2) In the event of understeering VEHICLE DYNAMIC CONTROL

Construction HYDRAULIC CONTROL UNIT Solenoid Valve (x12) Valve Coil (x12) Low Pressure Chamber Piston (x2) Pump (x2) Motor Pressure Sensor ESPCM

HYDRAULIC CONTROL UNIT

HYDRAULIC BRAKE ASSIST Reason for the HBA development

System layout HYDRAULIC BRAKE ASSIST

HECU Pressure sensor Emergency condition occurs. Detect emergency. (M/C pressure sensor) Detect emergency. (M/C pressure sensor) Execute an emergency decision logic. (ECU) Execute an emergency decision logic. (ECU) Increase brake pressure until the wheel slip occurs. Increase brake pressure until the wheel slip occurs. Execute an ABS control logic. [Control logic flow] Operating condition - over 30 bar - over 2200 bar/sec - over 7 km/h HYDRAULIC BRAKE ASSIST

INPUTS AND OUTPUTS Pressure Sensor (HCU Built-in type)

ESP COMPONENTS

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

Construction & Principle [Principle of Active Wheel Speed Sensor] ACTIVE WHEEL SPEED SENSOR

14mA 7mA Output current [Output Current] ACTIVE WHEEL SPEED SENSOR

YAW RATE SENSOR & LATERAL G SENSOR Appearance

YAW RATE SENSOR & LATERAL G SENSOR Operating temperature : - 40 ~ + 85 °C Supply voltage : 8 V ~ 16 V Nominal voltage : 12 V nominal Current consumption at 12V : 80 mA General specification (Electrical)

YAW RATE SENSOR & LATERAL G SENSOR 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

[Output of Lateral Acceleration Sensor] [Output of Yaw Rate Sensor] Sensor characteristics YAW RATE SENSOR & LATERAL G SENSOR

Operating principle YAW RATE SENSOR & LATERAL G SENSOR

Pin layout [Sensor connector - Male side]

Sensor Output YAW RATE SENSOR & LATERAL G SENSOR [Pin1- Reference voltage of the sensor][Pin2- Bite : for self test] IG ON

Sensor Output [Pin4 - Output of Yaw Rate] YAW RATE SENSOR & LATERAL G SENSOR [Pin3 - sensor power]

YAW RATE SENSOR & LATERAL G SENSOR Sensor Output [Pin5 - Lateral G sensor output][Lateral G sensor output: 90˚ to the right]

YAW RATE SENSOR & LATERAL G SENSOR Sensor self-test (Yaw rate sensor) Pin2 - Bite Pin 4- Yaw rate sensor output

YAW RATE SENSOR & LATERAL G SENSOR Sensor self-test (Lateral G sensor) Pin2 - Bite Pin 5- Lateral G sensor output

YAW RATE SENSOR & LATERAL G SENSOR Current data & DTC

STEERING ANGLE SENSOR Appearance

STEERING ANGLE SENSOR Specification Supply voltage : 8 V ~ 16 V Nominal voltage : 12 V Measuring Range : ~ ˚ (Angle), 0 ~ 1016 ˚/s (Velocity) Resolution : 0.1 ˚ (Angle), 4 ˚/s (Velocity) Recurrence of zero point : -2.5 ˚ ~ +2.5˚ (Switch on to switch on again) Variation of zero point : -5 ˚ ~ +5˚

STEERING ANGLE SENSOR Construction

STEERING ANGLE SENSOR Construction

Hi-scan data STEERING ANGLE SENSOR

DTC STEERING ANGLE SENSOR

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.)

STEERING ANGLE SENSOR Steering angle calibration Connect a Hi-scan pro on the vehicle. Select the Anti-lock brake system on the menu.

STEERING ANGLE SENSOR Steering angle calibration Turn off the Hi-scan pro. Enter Verification the calibration by reading the input & output data.

PRESSURE SENSOR Operating Voltage : 5± 0.25 V Output voltage : 10% ~ 90% V pwr Operating Pressure : 0 ~ 200 bar Response time : Max. 10msec Operational Temp. : - 40 ~ 125 Specification

PRESSURE SENSOR Hi-scan current data

WARNING LAMP CONTROL a) EBD W/L control b) ABS W/L control c) TCS/ESP OFF W/L control d) TCS/ESP Function Lamp control a) b) c)d)

WIRING DIAGRAM ABS8

WIRING DIAGRAM ESP8

DTC TABLE DTCNAME ACTIVE COMPONENTS WARNING LAMP EB D AB S ET C * BT C * ES P HB A * EB D AB S ES P C1101ECU High Voltage C1102ECU Low Voltageka C1200WSS FL Open or Short rc----- C1201WSS FL Range, Performance, Intermittant rc----- C1202WSS FL Invalid/No singal rc----- C1203WSS FR Open or Short rc----- C1204WSS FR Range, Performance, Intermittant rc----- C1205WSS FR Invalid/No singal rc----- C1206WSS RL Open or Short rc----- C1207WSS RL Range, Performance, Intermittant rc----- C1208WSS RL Invalid/No singal rc----- C1209WSS RR Open or Short rc----- C1210WSS RR Range, Performance, Intermittant rc----- C1211WSS RR Invalid/No singal rc----- C1213Wheel Speed Frequency Error rc-----

DTCNAME ACTIVE COMPONENTS WARNING LAMP EB D AB S ET C * BT C * ES P HB A * EB D AB S ES P C1235Pressure Sensor - Electricalkannc ---Ce C1237Pressure Sensor - Otherkannc ---Ce C1260Steering Angle Sensor - signal kannc ---- C1261Steering Angle Sensor not calibrated kannc ---- C1282 Lateral G Sensor - Electrical kannc ---- Yaw Rate Sensor - Electrical C1283 Lateral G Sensor - Signal kannc ---- Yaw Rate Sensor - Signal C1503TCS/ESP switch error --- C1513 Brake Light Switch (BLS) Error Plausibility Error BLS vs. Pressure Sensor kannc----- C1604ECU Hardware Error DTC TABLE

DTCNAME ACTIVE COMPONENTS WARNING LAMP EB D AB S ET C * BT C * ES P HB A * EB D AB S ES P C1605CAN Hareware Error ABS/ESP ka C1611CAN timeout EMS ka C1612CAN timeout TCU ka C1616CAN bus off ABS/ESP ka C1623CAN timeout SAS (Steering Angle Sensor) ka C1625CAN timeout ESP ka DTC TABLE

DTCNAME ACTIVE COMPONENTS WARNING LAMP EB D AB S ET C * BT C * ES P HB A * EB D AB S ES P C1626Implausible Controlka C1702Variant Coding C2112Valve Relay Error C2308FL Inlet Valve Error C2312FL Outlet Vavle Error C2316FR Inlet Valve Error C2320FR Outlet Vavle Error C2324RL Inlet Valve Error C2328RL Outlet Vavle Error C2332RR Inlet Valve Error C2336RR Outlet Vavle Error C2366USV1 Error C2370USV2 Error C2372HSV1 Error C2374HSV2 Error C2402Return Pump Fault (Motor Electrical)ka----- DTC TABLE