Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. ESC (MOBIS / Bosch 8.2)

2 ESC Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. ESC line-up Following is the table of system line-up for Hyundai ESC system. ManufacturerModelTypeVehicle ModelRemarks MANDO MGH-20ABS+TCSGK, XD F/L, HR, SM, FC MGH-25ABS+TCS+ESCGK F/L, MC, JM, FC F/L MGH-40 ABS+TCS+ESC (ROP+HAC+DBC) MC F/L, EN, PA Bosch Bosch 5.3ABS+TCSEF Bosch 8ABS+TCS+ESCTB, NF, TG, CM Bosch 8.2 ABS+TCS+ESC (HAC) PB, YFMEB HAC: Hill start Assist Control MEB: MOBIS Electronic Brake

3 ESC Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. HAC (Hill start Assist Control) Concept : Detects vehicle stop on slope. Holds the brake pressure for 2sec when the slope is higher than 8%. Function : Prevent roll back at start on slope. System : ESC H/W (HECU + Sensors) Longitudinal G Sensor Braking pressure Driving torque Time HAC ON Start forward at uphill Start backward at downhill

4 ESC Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. Inputs & Outputs ESC Control Module Wheel speed sensor (FL,FR,RL,RR) Pressure sensor (built in HECM) Brake switch ESC OFF switch Motor pump Solenoid valves ABS, EBD W/Lamp ESC W/Lamp ESC Lamp ECM.. High speed Power-train CAN Clutch switch (M/T only for HAC) Back-up lamp switch (M/T only for HAC) Yaw rate & 2G sensors Steering angle signal (With MDPS only) Cluster Chassis-CAN Engine torque reduction request Gear hold request Wheel speed information Vehicle speed Shift lever position information Steering angle sensor (Non MDPS only)

5 ESC Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. Active Wheel Speed Sensor Type: Active type (Hall effect) - Power supply: 4.5 ~ 20V - Air gap: 0.4~1.0mm - Possible to detect 0km/h - Not sensitive to the noise and air gap.

6 ESC Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. - Power supply: 7 ~ 18V - Signal output: CAN interface - G sensor : -1.8 ~ 1.8g - Yaw sensor: -100 ~ +100°/sec CAN-Hi CAN-Lo [Output Signal] Yaw rate & Two G-Sensors

7 ESC Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. The calibration of Longitudinal G-Sensor When do this? After replacing following components ! Yaw rate & Two G-sensorsHECM OR Max. allowed Inclination angle: ± 0.57° (1%)

8 ESC Copyright 2009 All rights reserved. No part of this material may be reproduced, stored in any retrieval system or transmitted in any form or by any means without the written permission of Hyundai Motor Company. Function : Show to be system state both malfunction and operation Warning Lamp ESC OFF lamp ESC lamp EBD warning lamp CategoryConditionPrevious modelsPB, LM, YF ESC lamp When ESC functionsBlinks ESC system failure-Turns on ESC OFF lamp ESC OFF S/W ONTurns on ESC system failureTurns on - ABS warning lamp