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Home >> Lexus >> 2011 >> GS 460 >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Power Steering System (Diagnostics - Introduction) >> Power Steering System >> Freeze Frame Data >> Freeze Frame Data
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Freeze Frame Data

  1. FREEZE FRAME DATA 
    NOTE:
    • If is difficult to show the specified values (judgement values) clearly because freeze frame data values change significantly due to differences in measurement conditions, surroundings or vehicle conditions. For this reason, there may be a problem even when the values are within specifications.
    • Turn the engine switch on (IG) and park the vehicle on level ground. Check the freeze frame data by using the Techstream.
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Check the freeze frame data. Enter the following menus: Chassis / EMPS / Utility / Freeze Frame Data.
      EMPS

      Tester display Item Description/Range Inspection Condition Reference Value
      Torque Sensor 1 Output Torque sensor 1 rotation angle/
      Min.: 0 deg, Max.: 360 deg      		 Steering wheel is turned Value changes from 0 to 360° every 22.5° of steering angle
      Torque Sensor 2 Output Torque sensor 2 rotation angle/
      Min.: 0 deg, Max.: 360 deg      		 Steering wheel is turned Value changes from 0 to 360° every 22.5° of steering angle
      Meter Vehicle Velocity Vehicle speed from meter/
      Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)
      1. Vehicle is stopped
      2. Vehicle is driven at a constant speed
      1. 0 km/h (0 mph)
      2. No significant fluctuation
      Engine Revolution Engine revolution/Min.: 0 RPM,
      Max.: 8192 RPM      		 Engine is running at a constant speed No significant fluctuation
      Motor Actual Current Amount of current to motor/
      Min.: -128 A, Max.: 127 A      		 Power steering is in operation Value changes in proportion to steering effort
      Command Value Current Demanded amount of current to motor/
      Min.: -128 A, Max.: 127 A      		 Power steering is in operation Value changes in proportion to steering effort
      Steering Angle Velocity Steering angle speed/
      Min.: -4096 deg/s, Max.: 4064 deg/s      		 Steering wheel is turned Value changes in proportion to steering speed
      Thermistor Temperature ECU substrate temperature/
      Min.: -50 °C, Max.: 205°C      		 Engine switch on (IG) -
      PIG Power Supply Power source voltage to activate motor/
      Min.: 0 V, Max.: 25.5 V      		 Power steering is in operation 10 to 14 V
      IG Power Supply ECU power source voltage/
      Min.: 0 V, Max.: 25.5 V      		 Engine switch on (IG) 10 to 14 V
      TRQ1 Zero Point Value Zero point value of torque sensor 1/
      Min.: 0 deg, Max.: 360 deg      		 Steering wheel is not turned
      (without load)      		 Values differ depending on vehicle
      TRQ2 Zero Point Value Zero point value of torque sensor 2/
      Min.: 0 deg, Max.: 360 deg      		 Steering wheel is not turned
      (without load)      		 Values differ depending on vehicle
      Steering Wheel Torque Steering torque/Min.: -7.0 N*m,
      Max.: 7.0 N*m      		 Steering wheel is turned Value changes in proportion to steering effort
      Motor Rotation Angle Motor rotation angle/Min.: 0 deg,
      Max.: 360 deg      		 Steering wheel is turned Value changes from 0 to 360° every 22.5° of steering angle
      Command Val Current 2 Demanded amount of current to
      motor 2/Min.: -128 A, Max.: 127 A      		 - -
      PIG2 Voltage Motor drive voltage after pressurization/
      Min.: 0 V, Max.: 64 V      		 Power steering is in operation 27 to 34 V
      Motor Voltage Motor power source voltage/Min.:
      0 V, Max.: 64 V      		 Power steering is in operation 27 to 34 V
      Motor Terminal Volt (U) Motor terminal voltage (U phase)/
      Min.: 0 V, Max.: 64 V      		 Power steering is in operation 27 to 34 V
      Motor Terminal Volt (V) Motor terminal voltage (V phase)/
      Min.: 0 V, Max.: 64 V      		 Power steering is in operation 27 to 34 V
      Motor Terminal Volt (W) Motor terminal voltage (W phase)/
      Min.: 0 V, Max.: 64 V      		 Power steering is in operation 27 to 34 V
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