4 Wheel Drive (JTEKT) 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.

2 4 Wheel Drive 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. Specification ItemsDescription MakerJTEKT (Japan) : Toyota Koki Automotive Systems Operation voltage12V Torque output0 ~ 1,320Nm Weight9kg Housing MaterialAluminum OilJWS 3309 (Permanent use), 0.13 liter Resistance (magnetic clutch) 2.4±0.2Ω (25 ) ITCC Rear Differential * ITCC: Intelligent Torque Controlled Coupling

3 4 Wheel Drive 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. Transfer case 2 axis type (JM, CM, EN)1 axis type (LM) Lubricant: Hypoid gear oil (SAE 75W/90)

4 4 Wheel Drive 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. Comparison HPJMLM SystemESTTODITM*ITCC Mode2H-4H-4LAUTO-LOW4WD Lock Shift typeSwitch -- 2H2WD driving Automatically shifted Automatic distribution (2WD4WD) Automatic distribution (2WD4WD) 4H 4WD High (1:1) 4L 4WD Low (2.48:1) Shift on the fly Must stop (AutoLow) Possible while driving Input sensors Speed sensor, MPS Speed sensors(2EA) **MPS Wheel speed sensor Steering angle sensor TPS Wheel speed sensor TPS Maker Borg- Warner(USA) JTEKT (Japan) DiagnosisDTC only DTC, Current data, Actuator test * ITCC: Intelligent Torque Controlled Coupling **MPS: Motor Position Sensor

5 4 Wheel Drive 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 flow Engine Throttle Position ECM Sensor 4 Wheel speed Brake signal Current Rear diff. Transfer Front diff. Transaxle ITCC

6 4 Wheel Drive 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. EMC operation Electro- magnetic Coil Shaft Main Clutch Rear H/G Front H/G Ball Main Cam Control Clutch Control Cam Armature ECU Zero current Main Clutch Shaft (Rear Wheels) Pilot Clutch Armature Electro magnetic Coil Main CamPilot Cam Current flows Output Torque Magnetic Flux Input Pilot Cam Main Cam ECU

7 4 Wheel Drive 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 4WD Control Module (ITCC CM ) Battery & Ignition Power Wheel Speed Sensor Signal, TPS (APS), Engine speed, Engine torque, ABS/ESC Active signal, Brake Signal 4WD Lock Switch EMC (Electromagnetic Clutch) InputsOutputs Cluster ESCECM 4WD Lock mode lamp 4WD Warning Lamp Diagnosis

8 4 Wheel Drive 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. 4WD Lock Mode [4WD Lock Switch] [4WD Lock Switch Lamp][4WD failure Lamp] Mode Torque Distribution Remark Auto0:100 ~ 50:50- 4WD Lock50:50 (fixed)30kph or less

9 4 Wheel Drive 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. [ITCC] [Control Module] – located in driver side (LH) dash panel Components [Wheel speed sensor]

10 4 Wheel Drive 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. DTC list DTC ItemsDetected ConditionFailsafe P0605 EEPROM Error If EEPROM data cannot be read or written 3 times2WD P1755 EMC Over Current Coil current 6A, more than 0.1 second Torque = 0Nm (EMC power off) P1756 EMC Internal Error No over current error case 1 : PWM Duty 90%, Coil current 0.1A over 2s case 2 : PWM Duty 10%, Coil current 3.0A over 2s Torque = 0Nm (EMC power off) P1757 EMC PWM Out of Range case 1 - EMC OFF signal output EMC voltage 9V, 1 second or more case 2 - EMC ON signal output EMC voltage 2V, 1 second or more Torque = 0Nm (EMC power off) U0100 Accelerator Position signal error case 1 - Abnormal APS signal for 0.5 second or more case 2 - No APS signal for 0.5 second or more APS= 0% AUTO mode 0 Nm Lock mode 100Nm U0121 (ABS) U0122 (ESC) Wheel speed signal error case 1 - Abnormal wheel speed signal (511kph) for 0.5 second or more case 2 - No signal for 0.5 second Torque = 0Nm (EMC power off) U0001CAN Bus Off CAN communication failure Torque = 0Nm (EMC power off)

11 4 Wheel Drive 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. DTC list DTC ItemsDetected ConditionFailsafe P0605 EEPROM Error If EEPROM data cannot be read or written 3 times2WD P1755 EMC Over Current Coil current 6A, more than 0.1 second Torque = 0Nm (EMC power off) P1756 EMC Internal Error No over current error case 1 : PWM Duty 90%, Coil current 0.1A over 2s case 2 : PWM Duty 10%, Coil current 3.0A over 2s Torque = 0Nm (EMC power off) P1757 EMC PWM Out of Range case 1 - EMC OFF signal output EMC voltage 9V, 1 second or more case 2 - EMC ON signal output EMC voltage 2V, 1 second or more Torque = 0Nm (EMC power off) U0100 Accelerator Position signal error case 1 - Abnormal APS signal for 0.5 second or more case 2 - No APS signal for 0.5 second or more APS= 0% AUTO mode 0 Nm Lock mode 100Nm U0121 (ABS) U0122 (ESC) Wheel speed signal error case 1 - Abnormal wheel speed signal (511kph) for 0.5 second or more case 2 - No signal for 0.5 second Torque = 0Nm (EMC power off) U0001CAN Bus Off CAN communication failure Torque = 0Nm (EMC power off) Hide this slide while presentation !