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Home >> Lexus >> 2009 >> GS 450h >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Variable Gear Ratio Steering System (Diagnostics - Introduction) >> Variable Gear Ratio Steering System >> Data List / Active Test >> Data List / Active Test

Data List / Active Test

  1. DATA LIST 

    HINT: 

    Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    NOTE:

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

    1. Connect the Techstream to the DLC3.
    2. Turn the power switch ON (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / VGRS / Data List.
    5. According to the display on the Techstream, read the Data List.
      VGRS

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed(Vsc ECU) Vehicle speed (VSC ECU)/
      Min.: 0 km/h, Max.: 255 km/h
      Actual vehicle speed Speed indicated on speedometer
      Engine Revolution(Rpm) Engine revolution (rpm)/
      Less 300 or More 300
      Less than 300 rpm
      More than 300 rpm
      Engine stopped
      Engine running
      Mtr Power Source Cur. Motor power source actual current/
      Min.: 0 A, Max.: 127.5 A
      Less than 1 A
      More than 1 A
      When not turning the steering wheel
      When turning the steering wheel
      PIG-Power Source Volt PIG power source voltage/
      Min.: 0 V, Max.: 25.5 V
      9 to 16 V Power switch on (IG) (Engine stopped)
      IG-Power Source Volt IG power source voltage/
      Min.: 0 V, Max.: 25.5 V
      9 to 16 V Power switch on (IG) (Engine stopped)
      Terminal Voltage U Terminal voltage U/
      Min.: 0 V, Max.: 25.5 V
      0 to 16 V Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
      Terminal Voltage V Terminal voltage V/
      Min.: 0 V, Max.: 25.5 V
      0 to 16 V Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
      Terminal Voltage W Terminal voltage W/
      Min.: 0 V, Max.: 25.5 V
      0 to 16 V Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
      Lock Motor Output Volt Lock motor output voltage/
      Min.: 0 V, Max.: 25.5 V
      9 to 16 V Power switch on (IG) (Engine stopped)
      Thermistor Temperature Thermistor temperature/
      Min.: -50°C, Max.: 205°C
      -50 to 150°C When the VGRS system operates
      Command Value Duty Command value DUTY for PVM control/
      Min.: 0%, Max.: 100%
      0 to 100% When the VGRS system operates
      Actuator Lock Duty Val Command value DUTY for actuator lock control/
      Min.: 0%, Max.: 100%
      Less than 10% Power switch on (IG)
      Straight Angle Valid Flag*1 Straight steering angle valid flag/
      Valid or Inval
      Valid or Inval Immediately after connecting the battery terminal
      Actuator Estimate Temp Actuator estimation temperature/
      Min.: -50°C, Max.: 205°C
      -50 to 150°C When the VGRS system operates
      Motor Overheat Record*2 Record of continuous overheat preventive control/
      Rec or Unrec
      Rec or Unrec -
      Motor Lo Power Record*2 Record of low motor power source voltage/
      Rec or Unrec
      Rec or Unrec -
      Motor Overload Record*2 Record of high motor power source voltage/
      Rec or Unrec
      Rec or Unrec -
      The Number of DTCs The number of DTCs/
      Max.: 0, Min.: 255
      0 to 255 -
      Test Mode Status Test mode status/
      Normal or Test
      Normal or Test -
      Steering Mode Absorber control switch (AVS switch) position/
      Sports or Normal
      Absorber control switch position is SPORT: Sports
      Absorber control switch position is NORM: Normal
      -
      Elec Angle Position Deep-slot electric angle position recorded when actuator angle neutral point adjustment completed normally/
      Min.: 0°, Max.: 360°
      - -
      Resolver Offset(SIN) Resolver offset (SIN)/
      Min.: 0, V Max.: 25.5 V
      Steering wheel is turned: 0 to 16 V
      Steering wheel is not turned: 0 V
      -
      Resolver Offset(COS) Resolver offset (COS)/
      Min.: 0, V Max.: 25.5 V
      Steering wheel is turned: 0 to 16 V
      Steering wheel is not turned: 0 V
      -
      Motor Current U Motor current U/
      Min.: -63 A, Max.: 64.5 A
      Steering wheel is turned: 0 to 64.5 A
      Steering wheel is not turned: 0 A
      -
      Motor Current V Motor current V/
      Min.: -63 A, Max.: 64.5 A
      Steering wheel is turned: 0 to 64.5 A
      Steering wheel is not turned: 0 A
      -
      Motor Current W Motor current W/
      Min.: -63 A, Max.: 64.5 A
      Steering wheel is turned: 0 to 64.5 A
      Steering wheel is not turned: 0 A
      -
      Motor Voltage Motor voltage/
      Min.: 0 V, Max.: 51 V
      VGRS system operating: 9 to 36 V
      VGRS system not operating: 0 V
      -
      Steering Pos1 Steering position/
      Min.: -2047 deg, Max.: 2048.94 deg
      Steering wheel is turned to right: Display value changes in negative direction
      Steering wheel is turned to left: Display value changes in positive direction
      -
      Steering Pos2 Steering position/
      Min.: -49150.5 deg, Max.: 49152 deg
      Steering wheel is turned to right: Display value changes in negative direction
      Steering wheel is turned to left: Display value changes in positive direction
      -
      Actuator Position Actuator position/
      Min.: -2047 deg, Max.: 2048.94 deg
      Steering wheel is turned: -2047 to 2048.94 deg. -
      Steering Angle Velocity Steering angle velocity/
      Min.: -2047 deg/s, Max.: 2048.94 deg/s
      Steering wheel is turned to right: Display value changes in negative direction
      Steering wheel is turned to left: Display value changes in positive direction
      -
      Actuator Target Angle1 Actuator target angle 1/
      Min.: -2047 deg, Max.: 2048.94 deg
      Steering wheel is turned: -2047 to 2048.94 deg -
      Actuator Target Angle2 Actuator target angle 2/
      Min.: -2047 deg, Max.: 2048.94 deg
      Steering wheel is turned: -2047 to 2048.94 deg -
      Actuator ReVolution Spd Actuator revolution speed/
      Min.: -2047 deg/s, Max.: 2048.94 deg/s
      Steering wheel is turned to right: Display value changes in negative direction
      Steering wheel is turned to left: Display value changes in positive direction
      -
      Actuator Deviation Ang Actuator deviation angle/
      Min.: -32 rad, Max.: 32 rad
      VGRS system operating: -32 to 32 rad. -
      Mode State Mode State/
      01, 02, 03, 04, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10
      01, 02, 03, 04, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, or 10 -
      NOTE:

      *1: This data must be "Valid" before proceeding with any steering adjustment. If "Inval" is displayed, perform steering angle sensor initialization procedure. Alternatively, if the steering actuator or steering control ECU has been replaced, perform VGRS system calibration (steering angle adjustment).

      HINT: 

      *2: If "Rec" is displayed, enter the VGRS menu on the Techstream, select record clearance, and follow the prompts to set to "Unrec".

  2. ACTIVE TEST 

    HINT: 

    Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

    1. Turn the power switch OFF.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch ON (IG).
    4. Turn the Techstream on.
    5. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    6. According to the display on the Techstream, perform the Active Test.
      COMBINATION METER

      Tester Display Test Part Control Range Diagnostic Note
      Master Warning Master caution indicator light Indicator light / ON or OFF Confirm that the vehicle is stopped, engine idling