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Model Outline for Technician Engine Chassis Body Body Electrical Suspension and Axle Suspension Control System Brake Brake Control System Steering Tire Pressure Warning System Tire and Wheel Model Outline for Technician Engine Chassis Body Electrical Body Suspension and Axle -A -W -V Front and Rear Suspension – MacPherson strut type independent suspension – Trailing arm double wishbone type independent suspension Upper Arm Shock Absorber • Multi-leaf type linear control valve is used Stabilizer Bar Stabilizer Lower Arm Trailing Arm Shock Absorber • Multi-leaf type linear control valve is used Front Suspension Rear Suspension Model Outline for Technician Engine Chassis Body Suspension and Axle Body Electrical -A -W -V Specifications – Front wheel alignment Destination -A Drive Type 2WD AWD Suspension Type Coil Coil Air Suspension 1630 (64.2)   -W, -V -W 4WD 4WD Coil Air Suspension Tread [mm (in.)] 1630 (64.2) 1630 (64.2) Caster [degree] 2°50’ 2°55’ 2°53’ 2°45’ 2°52’ Camber [degree] -0°40’  -0°38’ -0°40’ -0°38’ Toe-in [mm (in.)] 1.0 (0.04)   1.0 (0.04)  Steering Axis Inclination [degree] 10°55’  10°53’ 11°00’ 10°53’ 1620 (63.8)   1620 (63.8)  -0°40’ -0°45’ -0°49’ -0°45’ -0°49’ 1.0 (0.04)  2.5 (0.10) 1.0 (0.04) 2.5 (0.10) – Rear wheel alignment Tread [mm (in.)] Camber [degree] Toe-in [mm (in.)] NOTE: Unloaded Vehicle Condition Model Outline for Technician Engine Chassis Body Suspension Control System Overall – This system has following functions [Main Function] • Automatic Vehicle Height Control • Vehicle Speed Sensing Control • Vehicle Height Selecting Control - HI Mode [+30.0 mm (1.18 in.)] - N Mode [Ground Clearance: 180 mm (7.08 in.)] - LO Mode [Fr: -20.0 mm (-0.79 in.) / Rr: -5.0 mm (-0.20 in.)] - Luggage Mode [-30 mm (-1.18 in)] (Newly adopted) Body Electrical -A -W Model Outline for Technician Engine Chassis Body Suspension Control System -A -W System Diagram No Height Control Valve Front Height Control Sensors : Air Flow Front Pneumatic Cylinder Assembly ECM No Height Control Valve V Bus No Skid Control ECU Power Management Control ECU V Bus No M Rear Height Control Sensor Suspension Control ECU OF F DLC3 Rear Pneumatic Cylinder Assembly Height Control Compressor Assembly Pneumatic Tank Exhaust Solenoid Valve Height Control Switch Height Control (Driver’s Seat) OFF Switch Body Electrical AIR SUS Relay Height Control Switch (Luggage Compartment) Main Body ECU Yaw Rate & Acceleration Sensor Meter ECU Model Outline for Technician Engine Chassis Body Suspension Control System Body Electrical -A -W Layout of Main Components Height Control Compressor Assembly Rear Pneumatic Cylinder Assembly No Height Control Valve Pneumatic Tank Assembly Rear Height Control Sensors Front Pneumatic Cylinder Assembly Front Height Control Sensors No Height Control Valve Model Outline for Technician Engine Chassis Body Suspension Control System Body Electrical -A -W Layout of Main Components Air Suspension Indicator HI N Height Control Indicator Light LO Luggage Mode Indicator Light Height Control Switch (Driver’s Seat) Height Control OFF Switch Height Control Switch (Luggage Compartment) Model Outline for Technician Engine Chassis Body Suspension Control System Body Electrical -A -W Construction and Operation of Main Components – Height control compressor assembly • Supplies compressed air and removes moisture in the compressed air • Discharges compressed air in pneumatic tank to Exhaust atmosphere Dryer Solenoid Valve To Rear Height Control Valve Filter Compressor (Piston Portion) Compressor (Motor Portion) Intake Port Model Outline for Technician Engine Chassis Suspension Control System Body Body Electrical -A -W Construction and Operation of Main Components – Pneumatic cylinder assembly • Air spring has a single type air chamber consists of a chamber, air piston, diaphragm and dust cover Front Pneumatic Cylinder Assembly Rear Pneumatic Cylinder Assembly Air Chamber Dust Cover Bound Stopper Diaphragm Air Piston Shock Absorber Model Outline for Technician Engine Suspension Control System Chassis Body Body Electrical -A -W Construction and Operation of Main Components – Pneumatic tank assembly • Pneumatic tank solenoid valve opens in order to temporarily store compressed air into pneumatic tank to purpose of quickly lowering the vehicle height Pneumatic Tank Pneumatic Tank Solenoid Valve 10 Model Outline for Technician Engine Chassis Steering Body Body Electrical -A -W -V Layout of Main Components Skid Control ECU ECM Power Steering ECU Meter ECU • P/S Warning Light • Multi-information Display Steering Column Assembly • Brushless Motor with Rotational Angle Sensor • Reduction Mechanism • Hall IC Type Torque Sensor Air Conditioning Amplifier Main Body ECU 36 Power Management Control ECU Model Outline for Technician Engine Chassis Body Steering Body Electrical -A -W -V Steering Column and Brushless Motor – DC brushless motor with resolver type rotation angle sensor which reduces motor speed via worm gear and transmits it to the column shaft [Motor] Moto r Wheel Gear Rotation Angle Sensor Rotor Column Shaft Torque Sensor Worm Gear Torsion Bar Output Shaft 37 Input Shaft Wheel Gear Column Shaft Stator Model Outline for Technician Engine Chassis Body Steering Body Electrical -A -W -V Torque Sensor – Torque sensor using two hall ICs consists of a multipole magnet mounted on the input shaft, and a yoke mounted on the output shaft [Torque Sensor] Output Shaft Moto r Torque Sensor Yoke Input Shaft Multipole Magnet Torsion Bar Hall ICs Torsion Bar Output Shaft 38 Input Shaft Wheel Gear Column Shaft Model Outline for Technician Engine Chassis Body Steering Body Electrical -A -W -V Torque Sensor (detection of twisted angle of torsion bar) – Hall ICs detect the direction of the magnetic flux which passes through inside of the yoke [When steering turned to Right] Input Shaft Magnetic Flux Hall IC1 Hall IC2 Right Turn Output Voltage (V) Left Turn (+) (-) Twisted Angle of Torsion Bar (deg) Yoke Output Shaft 39 : Hall IC1 Signal : Hall IC2 Signal : Neutral Position Model Outline for Technician Engine Chassis Steering Body Body Electrical -A -W -V Torque Sensor (detection of twisted angle of torsion bar) – Driven straight: Magnetic flux does not through in yoke – Turning: Detects the direction of the magnetic flux [Driven Straight] 40 [Turn to Left] [Turn to Right] Input Shaft Input Shaft Input Shaft Output Shaft Output Shaft Output Shaft Model Outline for Technician Engine Chassis Steering Body Body Electrical -A -W -V EPS Operation – There are the following functions in assist control Item Function Basic Control Calculates the assist current from the steering torque value and the vehicle speed, and actuates the motor Inertia Compensation Control Recovery Control During the short interval between the times the driver fully turns the steering wheel and the wheels try to recover, this control assists the recovery force Damper Control Regulates the amount of assist when the driver turns the steering wheel while driving at high speeds, thus damping the changes in the yaw rate of the vehicle body System Overheat Protection Control 41 Improves the starting movement of the motor when the driver starts to turn the steering wheel Estimates the motor temp based on the amperage and the current duration If the temp exceeds the standard, it limits the amperage to prevent the motor from overheating Cooperative Control with EPS Controls EPS system in order to facilitate the driver to operate the steering in a direction that stabilizes the vehicle during VSC operating Electric Load Control Sends a request to the air conditioning amplifier to limit the operations of rear defogger, wiper deicer and mirror heaters if the steering wheel is turned when the battery voltage is low Model Outline for Technician Engine Chassis Body Steering Body Electrical -A -W -V Electric Load Control – In order to prevent reduction of EPS assist force, when battery voltage becomes low, the operations of electrical parts are limited Battery Voltage Front Wiper Deicer Load Control Demand Power Steering ECU Power Management Control ECU V Bus No 42 Air Conditioning Amplifier Power Management Bus Rear Window Defogger Limitation Demand (ON / OFF) Mirror Heater Control Start Conditions Electrical load control starts when both of the following conditions are met • Battery voltage is 10 V or less • Steering wheel is being turned Control Cancellation Conditions Electrical load control limits when either of the following conditions is met • Steering wheel is not being turned • Battery voltage has recovered to more than 12V Model Outline for Technician Engine Chassis Body Steering Body Electrical -A -W -V Diagnosis and Fail-safe – When malfunction occurs in EPS system, power steering ECU controls following control: • Turns on P/S warning light and fail-safe operation DTC No Detection Item C1511 C1512 Torque sensor malfunction Illuminate C1514 Torque sensor power supply abnormal Illuminate C1515 Torque sensor zero point adjustment undone Illuminate C1516 Torque sensor zero point adjustment incomplete Illuminate C1517 Torque hold abnormal Illuminate Motor malfunction Illuminate C1525 Rotation angle sensor output initialization undone Illuminate C1526 Rotation angle sensor output initialization incomplete Illuminate C1513 C1521 C1522 C1523 C1524 43 Model Outline for Technician Engine Chassis Body Steering Body Electrical -A -W -V Diagnosis and Fail-safe – When malfunction occurs in EPS system, power steering ECU controls following control: • Turns on P/S warning light and fail-safe operation DTC No C1528 C1531 C1532 C1533 C1534 44 Detection Item Motor rotation angle sensor malfunction Illuminate ECU malfunction Illuminate ECU malfunction  C1541 Vehicle speed signal malfunction Illuminate C1551 IG power source voltage malfunction Illuminate C1552 PIG power supply voltage malfunction Illuminate C1554 Power supply relay failure Illuminate C1555 Motor relay welding failure Illuminate C1581 Assist map number un-writing Illuminate U0100 Lost communication with ECM  U0129 Lost communication with brake system control module  Model Outline for Technician Engine Chassis Body Steering Body Electrical -A -W -V Diagnosis and Fail-safe – When the system detects the malfunction, system enters to fail-safe mode as follows Fail-safe Operation Disables the assist Limits the assist force Temporary limits the assist* Items • • • • • Torque sensor malfunction Motor overcurrent Motor short (Including drive system malfunction) Motor rotation angle sensor malfunction Power steering ECU malfunction • Power steering ECU internal temperature sensor malfunction • Vehicle speed or engine speed signal malfunction • Power supply voltage malfunction *: When the normal conditions are reestablished, it returns to normal controls 45 Model Outline for Technician Service Point Engine Chassis Body (Steering) Body Electrical -A -W -V Initialization and Calibration – Perform the initialization and calibration of EPS system in the following cases Replace Steering Column Power Assembly Steering ECU Steering effort differs between left and right 46 Torque Sensor Adjustment Using Tester Tester Menu: Chassis >>> EMPS >>> Utility >>> Torque Sensor Adjustment NOTE: • If DTCs (C1516 and/or C1526) are stored, initialization and calibration cannot be performed Clear the DTCs before starring calibration and initialization • If the power supply voltage is V or less, calibration cannot be performed Model Outline for Technician Engine Chassis Tire Pressure Warning System Body Electrical Body -A General – Comparison with previous model Item New RX350 Previous Model  Pacific Industrial Co., LTD Supplier No of Sensors Sensor 47 sensors Full Size Tire sensors sensors  7-digit Interval of data transmission  minute (Shorten 15 sec in case of change of 40 kPa / 30 sec or more) Supplier  DENSO DTC Output SIL CAN via BEAN Tire Pressure Warning Reset Switch  with Tire Pressure Warning Select Switch without with Antenna  (built into receiver) ECU ID Number Compact Spare Tire Model Outline for Technician Engine Chassis Body Tire Pressure Warning System Body Electrical -A Layout of Main Components / System Diagram Combination Meter (Meter ECU) Tire Pressure Warning Light Tire Pressure Warning Antenna and Receiver ECM Tire Pressure Warning Reset Switch Tire Pressure Warning System ECU DLC3 ECM Tire Pressure Warning Reset Switch 48 Tire Pressure Warning Valve and Transmitter Tire Pressure Warning Valve and Transmitter (x or 5) x or Tire Pressure Warning Antenna and Receiver Tire Pressure Warning ECU Meter ECU Tire Pressure Warning Light Model Outline for Technician Engine Chassis Tire Pressure Warning System Body Electrical Body -A Tire Pressure Warning ECU – kinds of tire pressure warning ECUs are established Production TMC TMMC 49 Number of Transmitter Color of ECU Case Models with transmitters Black Models with transmitters Beige Models with transmitters Brown Model Outline for Technician Engine Chassis Body Electrical Body Tire and Wheel -A -W -V Tire and Wheel Variations Tire Size 235/60R18 235/55R19 Supplier BRIDGESTONE / DUNLOP  Size 18 x 7.5J 19 x 7.5J Material Aluminum alloy  P C D 114.3 mm (4.5 in.)  Offset 35.0 mm (1.4 in.)  STD STD for Sport Package / OPT Wheel Design Equipment P.C.D.: Pitch Circle Diameter 50