VARIABLE GEAR RATIO STEERING SYSTEM DATA LIST / ACTIVE TEST

Tech Tips

Using the GTS 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. DATA LIST


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / VGRS / Data List.

    6. According to the display on the GTS, read the Data List.

      VGRS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Steering Angle

      Steering angle/

      Min.: -1638.40 deg

      Max.: 1638.35 deg

      		 -600 to 600 deg -
      Steering Angle Changing Speed

      Steering angle changing speed/

      Min.: -1638.40 deg/s

      Max.: 1638.35 deg/s

      		 -1146 to 1146 deg/s -
      Vehicle Speed

      Vehicle speed/

      Min.: 0.00 km/h (0 mph)

      Max.: 327.67 km/h (203 mph)

      		 Actual vehicle speed -
      Starting Status

      Starting status/

      Stop or Starting-up

      Not power switch on (READY): Stop

      Power switch on (READY): Starting-up

      		 -
      IG Power Supply Voltage

      IG power supply voltage/

      Min.: 0.00 V

      Max.: 255.99 V

      		 11 to 14 V -
      PIG Power Supply Voltage

      PIG power supply voltage/

      Min.: 0.00 V

      Max.: 255.99 V

      		 11 to 14 V -
      Power Supply Status

      Power supply status/

      Normal, N Pos Stop, Cur Pos Stop or Prompt Stop

      		 Normal -
      System Heavily-loaded Status

      System heavily-loaded status/

      ON or OFF

      		 OFF -
      ECU Substrate Temperature

      ECU substrate temperature/

      Min.: -256.00°C (-428°F)

      Max.: 255.99°C (492°F)

      		 -40 to 120°C (-40 to 248°F) -
      Motor Temperature(ECU Calculated Value)

      Motor temperature/

      Min.: -256.00°C (-428°F)

      Max.: 255.99°C (492°F)

      		 Within 20°C (68°F) of ambient temperature -
      Ambient Temperature

      Ambient temperature/

      Min.: -40°C (-40°F)

      Max.: 50°C (122°F)

      		 Same as ambient temperature -
      System Overheat Status

      System overheat status

      Normal, Overheat-Weak, Overheat-Mid or Overheat-Strong

      		 Normal -
      ECU Substrate Temperature(ECU Calculated Value)

      ECU substrate temperature

      Min.: -256.00°C (-428°F)

      Max.: 255.99°C (492°F)

      		 -40 to 120°C (-40 to 248°F) -
      Wheel Angle(SIL Communication)

      Wheel angle (SIL communication)/

      Min.: -1638.40 deg

      Max.: 1638.35 deg

      		 -600 to 600 deg -
      Wheel Angle(CAN Communication)

      Wheel angle (CAN communication)/

      Min.: -1638.40 deg

      Max.: 1638.35 deg

      		 -600 to 600 deg -
      Steering Angle Sensor Communication Protocol

      Steering sensor communication protocol/

      Calc Val Fix, SIL or CAN

      		 SIL -
      Direct Advance Wheel Angle

      Direct advance wheel angle/

      Min.: -1638.40 deg

      Max.: 1638.35 deg

      		 -10.5 to 10.5 deg -
      Direct Advance Wheel Angle Status*

      Direct advance wheel angle status/

      Delete, Temp Val or Fixed Val

      		 Fixed Val -
      Motor Resolver Electrical Angle

      Motor resolver electrical angle/

      Min.: 0.00 deg

      Max.: 359.99 deg

      		 0.00 to 359.99 deg -
      Changing Amount of Motor Resolver Electrical Angle

      Changing amount of motor resolver electrical angle/

      Min.: -180.00 deg

      Max.: 179.99 deg

      		 -46 to 46 deg -
      Motor Resolver SIN Phase Shaped Width

      Motor resolver SIN phase amplitude/

      Min.: -5.00 V

      Max.: 4.99 V

      		 -4.1 to 4.1 V -
      Motor Resolver SIN Phase Offset

      Motor resolver SIN phase offset/

      Min.: 0.00 V

      Max.: 19.99 V

      		 5 to 15 V -
      Motor Resolver COS Phase Shaped Width

      Motor resolver COS phase amplitude/

      Min.: -5.00 V

      Max.: 4.99 V

      		 -4.1 to 4.1 V -
      Motor Resolver COS Phase Offset

      Motor resolver COS phase offset/

      Min.: 0.00 V

      Max.: 19.99 V

      		 5 to 15 V -
      Motor Resolver Shaped Width Squared Sum

      Sum of squares of motor resolver amplitudes/

      Min.: 0.00 V^2

      Max.: 25.00 V^2

      		 1.4 to 16.6 V^2 -
      Deep Groove Electrical Angle Position

      Deep groove electrical angle position/

      Min.: 0.00 deg

      Max.: 359.99 deg

      		 75 to 145 deg -
      Neutral Position Calibration Status

      Neutral position calibration status/

      Incmpl or Cmpl

      		 Cmpl -
      Actuator Target Angle

      Actuator target angle/

      Min.: -512.00 deg

      Max.: 511.98 deg

      		 -150 to 150 deg -
      Actuator Angle

      Actuator angle/

      Min.: -512.00 deg

      Max.: 511.98 deg

      		 -150 to 150 deg -
      Pinion Angle Status

      Pinion angle status/

      Invalid or Valid

      		 Valid -
      Pinion Angle

      Pinion angle/

      Min.: -2048.00 deg

      Max.: 2047.93 deg

      		 -600 to 600 deg -
      Motor U Phase Voltage

      Motor U phase voltage/

      Min.: 0.00 V

      Max.: 255.99 V

      		 0 to 14 V -
      Motor V Phase Voltage

      Motor V phase voltage/

      Min.: 0.00 V

      Max.: 255.99 V

      		 0 to 14 V -
      Motor W Phase Voltage

      Motor W phase voltage/

      Min.: 0.00 V

      Max.: 255.99 V

      		 0 to 14 V -
      Motor U Phase Current

      Motor U phase current/

      Min.: -256.00 A

      Max.: 255.99 A

      		 -75 to 75 A -
      Motor V Phase Current

      Motor V phase current/

      Min.: -256.00 A

      Max.: 255.99 A

      		 -75 to 75 A -
      Motor W Phase Current

      Motor W phase current/

      Min.: -256.00 A

      Max.: 255.99 A

      		 -75 to 75 A -
      Motor U Phase Duty

      Motor U phase duty/

      Min.: 0.00 %

      Max.: 100.00 %

      		 6 to 94 % -
      Motor V Phase Duty

      Motor V phase duty/

      Min.: 0.00 %

      Max.: 100.00 %

      		 6 to 94 % -
      Motor W Phase Duty

      Motor W phase duty/

      Min.: 0.00 %

      Max.: 100.00 %

      		 6 to 94 % -
      PIG Current

      PIG current/

      Min.: -256.00 A

      Max.: 255.99 A

      		 -50 to 50 A -
      Motor Rotation Speed

      Motor rotation speed/

      Min.: -32768 deg/s

      Max.: 32767 deg/s

      		 -17190 to 17190 deg/s -
      Lock Solenoid Voltage

      Lock solenoid voltage/

      Min.: 0.00 V

      Max.: 255.99 V

      		 0 to 14 V -
      Lock Solenoid Duty

      Lock solenoid duty/

      Min.: 0 %

      Max.: 100 %

      		 0 to 100 % -
      Rear Target Wheel Angle

      Rear target wheel angle/

      Min.: -8.00 deg

      Max.: 7.99 deg

      		 -2 to 2 deg -
      Rear Wheel Angle

      Rear wheel angle/

      Min.: -8.00 deg

      Max.: 7.99 deg

      		 -2 to 2 deg -
      Actuator Operation Amount

      Actuator operation amount/

      Too Little, Normal, Malfunction or Too Much

      		 Normal -
      Number of DTC

      Number of DTCs recorded/

      Min.: 0

      Max.: 255

      		 0 -

      Note

      *: This data must be "Fixed Val" before proceeding with any steering adjustment. If "Delete" or "Temp Val" is displayed, perform the steering sensor initialization procedure. If the steering actuator assembly or VGRS ECU (front steering control ECU) has been replaced, perform VGRS system calibration (steering angle adjustment).

  2. Abnormal Operation History


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / VGRS / Data List / Abnormal Operation History.

    6. According to the display on the GTS, read the Abnormal Operation History.

      VGRS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Limited Control Count(Overheat-Weak)

      Limited control count (overheat-weak)/

      Min.: 0

      Max.: 255

      		 - The number of times which shows that overheat status of VGRS became "Overheat-Weak" and then the control was limited.
      Limited Control Count(Overheat-Mid)

      Limited control count (overheat-mid)/

      Min.: 0

      Max.: 255

      		 - The number of times which shows that overheat status of VGRS became "Overheat-Mid" and then the control was limited.
      Limited Control Count(Overheat-Strong)

      Limited control count (overheat-strong)/

      Min.: 0

      Max.: 255

      		 - The number of times which shows that overheat status of VGRS became "Overheat-Strong" and then the control was limited.
      N Pos Stop Control Count

      N pos stop control count/

      Min.: 0

      Max.: 255

      		 - The number of times which shows that power supply status to VGRS became "N Pos Stop" and then the control in "N Pos Stop" happened.
      Cur Pos Stop Control Count

      Cur pos stop control count/

      Min.: 0

      Max.: 255

      		 - The number of times which shows that power supply status to VGRS became "Cur Pos Stop" and then the control in "Cur Pos Stop" happened.
      Prompt Stop Control Count

      Prompt stop control count/

      Min.: 0

      Max.: 255

      		 - The number of times which shows that power supply status to VGRS became "Prompt Stop" and then the control in "Prompt Stop" happened.
      Limited Control Count(System Heavily-loaded)

      Limited control count (system heavily-loaded)/

      Min.: 0

      Max.: 255

      		 - The number of times which shows that VGRS system became heavily-loaded and then the control was limited.