VARIABLE GEAR RATIO STEERING SYSTEM DATA LIST / ACTIVE TEST

Tech Tips

Using the intelligent tester to read the Data List allows the values or states of switches, sensor, 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 by 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. READ DATA LIST


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus:

      Select: Chassis / VGRS / Data List /

    5. According to the display on tester, read the "Data List".

      VGRS:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed (Vsc ECU)

      Vehicle speed (Skid control ECU)/

      Min.: 0 km/h, Max.: 255 km/h

      		 Actual vehicle speed (Speed indicated on speedometer) -
      Engine Revolution (Rpm)

      Engine revolution (rpm)/

      Below 300 or 300 or higher

      Engine is stopped: Below 300 rpm

      Engine is running: 300 rpm or higher

      		 -
      Mtr Power Source Cur.

      Motor power source actual current/

      Min.: 0 A, Max.: 127.5 A

      Steering wheel is not turned: Below 1 A

      Steering wheel is turned: 1 A or higher

      		 -
      PIG-Power Source Volt

      PIG power source voltage/

      Min.: 0 V, Max.: 25.5 V

      Engine switch on (IG) (Engine stopped): 9 to 16 V

      Engine switch off: 0 V

      		 -
      IG-Power Source Volt

      IG power source voltage/

      Min.: 0 V, Max.: 25.5 V

      Engine switch on (IG) (Engine stopped): 9 to 16 V

      Engine switch off: 0 V

      		 -
      Terminal Voltage U

      Terminal voltage U/

      Min.: 0 V, Max.: 25.5 V

      VGRS system operating: 0 to 16 V

      VGRS system not operating: 0 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

      VGRS system operating: 0 to 16 V

      VGRS system not operating: 0 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

      VGRS system operating: 0 to 16 V

      VGRS system not operating: 0 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

      Engine switch on (IG) (Engine stopped): 9 to 16 V

      Engine switch off: 0 V

      		 -
      Thermistor Temperature

      Thermistor temperature/

      Min.: -50°C, Max.: 205°C

      		 - -
      Command Value Duty

      Command value DUTY for PVM control/

      Min.: 0%, Max.: 100%

      VGRS system operating: 0 to 100%

      VGRS system not operating: 0%

      		 -
      Actuator Lock Duty Val

      Command value DUTY for actuator lock control/

      Min.: 0%, Max.: 100%

      		 Engine switch on (IG): Below 10% -
      Straight Angle Valid Flag*1

      Straight steering angle valid flag/

      Valid or Invalid

      Steering angle sensor zero point calibrating: Valid

      Steering angle sensor zero point not calibrating: Invalid

      		 -
      Actuator Estimate Temp

      Actuator estimation temperature/

      Min.: -50°C, Max.: 205°C

      		 - -
      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 Over load 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 mode or Test mode

      Normal mode status: Normal mode

      Test mode status: Test mode

      		 -
      Steering Mode

      Driving mode select switch position/

      Sports or Normal

      Driving mode select switch position is SPORT S+: Sports

      Driving mode select switch position is except SPORT S+: 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

      VGRS system operating: 9 to 16 V

      VGRS system not operating: 0 V

      		 -
      Steering Pos 1

      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 Pos 2

      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 Angle 1

      Actuator target angle 1/

      Min.: -2047 deg., Max.: 2048.94 deg.

      		 Steering wheel is turned: -2047 to 2048.94 deg. -
      Actuator Target Angle 2

      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/

      00, 01, 02, 03, 04, 05, 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 "Invalid" is displayed, perform steering angle sensor initialization procedure. If the steering actuator or steering control ECU has been replaced, perform VGRS system calibration (steering angle adjustment).

      Tech Tips

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

  2. PERFORM ACTIVE TEST

    Tech Tips

    Using the intelligent tester to perform the Active Tests allows relays, VSVs and 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 Test early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus:

      Select: Body / Combination meter / Active Test /

    5. According to the display on tester, perform the "Active Test".

      Combination meter:
      Tester Display Test Part Control Range Diagnostic Note
      Master Warning Master warning light OFF / ON Confirm that the vehicle is stopped and engine is idling