Tài liệu xe huyndai i30 phần hệ thống lái điện tử

MDPS (TRW) Copyright by Hyundai Motor Company All rights reserved FD - MDPS Application FD - MDPS System structure ② ① LWR MT’G BRKT Power Head MOBIS COCKPIT MODULE Steering Column ③ MDPS SYSTEM U/Joint MOBIS ④ CHASSIS MODULE MOBIS Steering Gearbox FD - MDPS Components To U/Joint To column ASS’Y exterior ECU Worm Wheel ECU Motor Worm Shaft Assembly Worm Wheel Torque Sensor Main Housing Assembly Bearing Motor Spring Bearing ASS’Y section view Worm Gear Anti-Rattle Spring Oval Ring & Cover FD - MDPS Control logic ▶ Main input signals for the control logic ① Steering Wheel Torque ② Steering Wheel Position (Angle) ③ Vehicle Speed Torque VSS Angle VSS Assistance Boost Curve Active Return + Torque Angle VSS Yaw Damping Motor Command FD - MDPS CAN connection Steering wheel torque & position sensor : Built in column Ignition Switch Signal Engine rpm Vehicle speed Engine Load Steering Load Warning information C A N Output motor SAS FD - MDPS Torque sensor LED A In put sha ft from ste ering whee l LED B Le ns/ Diffuser A Lens/Diff user B Narrow spoke disk wide spoke disk Index point LA A Sensor A Input shaft disc Output shaft to motor and rack Ou tput shaft disc LA B Sensor B 128 pixel Linear Array FD - MDPS Torque sensor Over-torque Shaft Light Path Opto-emitters Optodetectors Input Shaft Output Shaft Limit Stops Torsion Bar Gear Wheel Rotating Discs FD - MDPS ASP (Absolute Steering Position) calibration When ? - MDPS Assmbly was replaced with new one or used one from the other vehicles - MDPS ECM (TBD) was replaced with new one or used one from the other vehicles - After wheel alignment adjustment FD - MDPS ASP (Absolute Steering Position) calibration 10 FD - MDPS 11 ASP (Absolute Steering Position) calibration ‘Detect’ or ‘Not detect’: Every IG off & on, this value will show ‘detect’ or ‘not detect’ depending on the steering wheel position But it will get ‘detect’ naturally as the steering wheel is rotated more than 180° while driving (‘not detect’ does not mean the calibration fault.) CAL&INDEX: Calibration is OK and Index was found After DTC detection, the angle value will be fixed by zero FD - MDPS 12 ASP (Absolute Steering Position) calibration What happen if it is not done? 1) In case of replacement with new part - Motor assist is available but warning lamp will blink and active return (on-center control) will stop 2) In case of replacement with used part - Motor assist is available and warning lamp will not turn on Active return (on-center control) will stop What happen if it was done with wrong way? (improper steering wheel center position) - You may have DTC (C1259) without warning lamp on However, the motor assist is available but the active return (on-center control) will stop FD - MDPS 13 Input & Output FD - MDPS Power supply & Relay 14 ECM relay (built in ECM) Motor relay (built in motor) - Every ignition off from engine running, the relay will sound (off) after ∼3 seconds - However, if you turn the ignition on before 2∼3 seconds, the motor assist is available under the ignition on condition even though the engine is not running FD - MDPS 15 Overheat Protection (Derating motor current ) - Before the DTC(C1603) is detected (before the temperature reaches 85°), as soon as the steering torque reaches to maximum value, the motor current will decrease by 40% immediately in order to prevent the overheat in the system in advance FD - MDPS Understanding of current data 16 FD - MDPS 17 Failsafe for vehicle speed signal fault - The vehicle speed signal comes from PG-B in A/T through PCM(or TCM) and CAN (Non-OBD only) - Warning lamp OFF, No DTC and Motor ON (Default vehicle speed is 40km/h) Normal condition PG-B open circuit FD - MDPS Failsafe for IGN1 signal fault Failsafe for engine speed signal fault For example, disconnect the CKP sensor while driving and confirm the symptom - Warning lamp ON (IG On condition), - No DTC - Motor assist ON for 60 seconds and turn off for the safety 18 FD - MDPS Warning lamp 1) Warning lamp ON + Motor stop: Critical fault - Torque sensor fault - Motor or Relay fault - MDPS ECM internal fault - IG signal fault (from next power cycle) - Battery voltage low or high 2) Warning lamp ON + Motor assist: Minor fault - CAN related faults 3) Warning lamp OFF + Motor assist: Minor fault - ASP calibration failure - Variant coding fault - Vehicle speed signal fault 19 FD - MDPS Variant coding 20 ... Sensor A Input shaft disc Output shaft to motor and rack Ou tput shaft disc LA B Sensor B 128 pixel Linear Array FD - MDPS Torque sensor Over-torque Shaft Light Path Opto-emitters Optodetectors... CAL&INDEX: Calibration is OK and Index was found After DTC detection, the angle value will be fixed by zero FD - MDPS 12 ASP (Absolute Steering Position) calibration What happen if it is not