Copyright by Hyundai Motor Company. All rights reserved. MDPS

2 System Structure MDPS Control Module Torque Sensor Reduction gear (Plastic worm wheel) EPS Motor PCM(ECM) Vehicle speed ENG speed AreaGeneralEurope Trim level LGLGLSLGLGLS Manual + Non TiltS--S-- Manual + TiltP--P-- MDPS + Tilt & Telescopic PSSPSS S: Standard, P: Option CAN

3 MDPS Torque Sensor Non-Contact type [Linear Hall] Contact type [Potentiometer] Main, Sub signals have reverse phase each other Main, Sub signals have same phase each other MCPA Voltage cross type Voltage straight type PB MC ~ June 08 June 08 ~

4 MDPS Torque Sensor Operating Principle [Internal Structure] Input shaft Rotor Stator Hall Sensor Stators Rotor Hall IC [Sensor principle] N N N S S S S This page is only for instructor note !

5 MDPS Engine Speed & Vehicle Speed Signal MDPS Control Module PCM(ECM) Vehicle speed Eng. speed PA PB MDPS Control Module PCM(ECM) Vehicle speed Eng. speed CAN Warning lamp (to cluster)

6 MDPS Power Supply & Warning Lamp MDPS Warning Lamp IG ON, Engine Stop: Keeps ON Engine Starting : Turns off 2sec later after engine starting in normal condition. I/P junction box Engine room junction box (embedded in Multi Fuse)

7 MDPS Motor Brush type DC motor (vs. brush-less type) - Simple control logic - Brush operating noise may occur - Limitation for high speed rotation and output power Max. Current: 65A Commutator Brush Permanent magnet Armature (Coil) Permanent magnet Rotor Brush Commutator

8 MDPS MDPS Control Module System Supplier: MANDO Thermister to detect the temperature is embedded in control module. Motor connector Motor Control Module

9 MDPS Communication