POWER STEERING SYSTEM DATA LIST / ACTIVE TEST

  1. DATA LIST

    Tip:

    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. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

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

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

      Chassis > EMPS > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Meter Vehicle Velocity

      Vehicle speed from speedometer

      Min.: 0.0 km/h (0.0 MPH)

      Max.: 300.0 km/h (186.4 MPH)

      • 0 km/h (0 MPH): Engine running and vehicle stopped

      • No significant fluctuation: Engine running and vehicle driven at a constant speed

      -

      Wheel Speed Right

      Rear right wheel speed

      Min.: 0 km/h (0 MPH)

      Max.: 255 km/h (158 MPH)

      • 0 km/h (0 MPH): Engine running and vehicle stopped

      • No significant fluctuation: Engine running and vehicle driven at a constant speed

      -

      Wheel Speed Left

      Rear left wheel speed

      Min.: 0 km/h (0 MPH)

      Max.: 255 km/h (158 MPH)

      • 0 km/h (0 MPH): Engine running and vehicle stopped

      • No significant fluctuation: Engine running and vehicle driven at a constant speed

      -

      Engine Revolution

      Engine speed

      Min.: 0 rpm

      Max.: 12800 rpm

      No significant fluctuation

      Engine running at a constant speed

      Motor Actual Current

      Amount of current to motor

      Min.: -327.68 A

      Max.: 327.67 A

      Value changes in proportion to steering effort

      - The value increases when turning left and decreases when turning right

      Engine running and steering wheel being turned

      Command Value Current

      Requested current to motor

      Min.: -327.68 A

      Max.: 327.67 A

      Value changes in proportion to steering effort

      - The value increases when turning left and decreases when turning right

      Engine running and steering wheel being turned

      Steering Angle Velocity

      Steering angle speed

      Min.: -32768 deg/s

      Max.: 32767 deg/s

      Value changes in proportion to steering speed

      - The value increases when turning left and decreases when turning right

      Engine running and steering wheel being turned

      Thermistor Temperature

      ECU substrate temperature

      Min.: -50.0°C (-58.0°F)

      Max.: 150.0°C (302.0°F)

      -50°C to 150°C (-58°F to 302°F)

      -

      PIG Power Supply

      Power source voltage to active motor

      Min.: 0.0000 V

      Max.: 20.1531 V

      9 to 16 V

      Ignition switch ON

      IG Power Supply

      IG power source voltage

      Min.: 0.0000 V

      Max.: 20.1531 V

      8 to 16 V

      Ignition switch ON

      Steering Angle Sens Sig

      Steering angle sensor signal state

      OK or NG(1) or NG(2) or NG(3)

      OK: Steering angle sensor signal received

      NG(1): The learning has not completed

      NG(2): Steering sensor abnormal

      NG(3): Communication Error

      -

      Steering Wheel Torque

      Steering wheel torque

      Min.: -7.00 Nm

      Max.: 7.00 Nm

      Value changes in proportion to steering effort

      - The value increases when turning left and decreases when turning right

      Engine running and steering wheel being turned

      Motor Rotation Angle

      Motor rotation angle

      Min.: 0.000 deg

      Max.: 360.000 deg

      During steering operation, motor rotation angle value changes from 0 to 360°

      Engine running and steering wheel being turned

      Command Val Current 2

      Requested current to motor

      Min.: -327.68 A

      Max.: 327.67 A

      Value changes in proportion to steering effort

      Engine running and steering wheel being turned

      Motor Terminal Volt(U)

      Motor terminal voltage (U phase)

      Min.: 0.000 V

      Max.: 98.000 V

      Value changes within 4 to 16 V range

      Engine running and steering wheel being turned

      Motor Terminal Volt(V)

      Motor terminal voltage (V phase)

      Min.: 0.000 V

      Max.: 98.000 V

      Value changes within 4 to 16 V range

      Engine running and steering wheel being turned

      Motor Terminal Volt(W)

      Motor terminal voltage (W phase)

      Min.: 0.000 V

      Max.: 98.000 V

      Value changes within 4 to 16 V range

      Engine running and steering wheel being turned

      Torque Sensor 1 Output

      Torque sensor voltage

      Min.: 0.0000 V

      Max.: 4.9725 V

      • 2.3 to 2.7 V: Engine running and steering wheel not being turned (without load)

      • 1.2 to 2.5 V: Engine running and steering wheel being turned to the left with vehicle stopped

      • 2.5 to 3.8 V: Engine running and steering wheel being turned to the right with vehicle stopped

      -

      Torque Sensor 2 Output

      Torque sensor voltage

      Min.: 0.0000 V

      Max.: 4.9725 V

      • 2.3 to 2.7 V: Engine running and steering wheel not being turned (without load)

      • 1.2 to 2.5 V: Engine running and steering wheel being turned to the right with vehicle stopped

      • 2.5 to 3.8 V: Engine running and steering wheel being turned to the left with vehicle stopped

      -

      TRQ1 Zero Point Value

      Torque sensor voltage

      Min.: 0.0000 V

      Max.: 4.9725 V

      Values differ depending on vehicle

      Engine running and steering wheel not being turned

      TRQ2 Zero Point Value

      Torque sensor voltage

      Min.: 0.0000 V

      Max.: 4.9725 V

      Values differ depending on vehicle

      Engine running and steering wheel not being turned

      IG ON/OFF Times

      Number of times of ignition switch ON/off after fail detection

      Min.: 0 times

      Max.: 65535 times

      -

      This value indicates the number of times of ignition switch ON/off after the latest DTC detection.

      Motor Overheat Record

      Continuous overheat prevention control record

      Unrec or Rec

      Unrec

      Unrec: Unrecorded

      Rec: Recorded

      Motor Lo Power Record

      PIG power source voltage drop record

      Unrec or Rec

      Unrec

      Unrec: Unrecorded

      Rec: Recorded

      Eng Rev Inter Record

      Record of engine signal interruption

      Unrec or Rec

      Unrec

      Unrec: Unrecorded

      Rec: Recorded

      Str Angle Inter Record

      Record of steering sensor signal interruption occurrence display

      Unrec or Rec

      Unrec

      Unrec: Unrecorded

      Rec: Recorded

      Spd Sig Invalid Record

      Record of vehicle speed signal invalid

      Unrec or Rec

      Unrec

      Unrec: Unrecorded

      Rec: Recorded

      Battery Voltage Lo Record

      Battery voltage reduction history

      Min.: 0 times

      Max.: 65535 times

      0 to 65535 times

      -

      PS Assist Signal

      Status of the record of power steering assist signal

      OFF or ON

      OFF: Ignition switch ON

      ON: Engine running

      -

      Motor Actual Current 2

      Amount of current to motor

      Min.: -327.68 A

      Max.: 327.67 A

      Value changes in proportion to steering effort

      Engine running and steering wheel being turned

      Stop&Start Ctrl Mode

      Status of the record of stop and start control mode

      IG, Run, Stopreq, Stop or Restart

      -

      -

      Rotation Angle Sens Avg(SIN)

      Rotation angle sensor average (SIN)

      Min.: 0.0000 V

      Max.: 4.9725 V

      -

      -

      Rotation Angle Sens Avg(COS)

      Rotation angle sensor average (COS)

      Min.: 0.0000 V

      Max.: 4.9725 V

      -

      -

      Motor Overheat Limit Cnt(Normal)

      Number of times that assist limit was performed according to the estimation of the portion where heat was generated in the power steering ECU and motor coil temperature

      Min.: 0 times

      Max.: 255 times

      -

      -

      Assist Limit Cnt(Power Voltage Low)

      Number of times that assist limit was performed due to battery voltage having dropped to 9 V or below

      Min.: 0 times

      Max.: 255 times

      -

      -

      Power Vol Low Prevention Limit Cnt

      Number of times that assist limit was performed due to battery voltage having dropped to 9.7 V or below

      Min.: 0 times

      Max.: 255 times

      -

      -

      Eng Stall/Ready OFF Cnt

      Number of times that assist limit was performed after the engine stalled and the ignition switch was turned off

      Min.: 0 times

      Max.: 255 times

      -

      -

      Motor Overheat Limit Cnt(Motor Overload)

      Number of times that assist limit was performed to prevent the system from overheating in a case where the motor is overloaded because it is locked due to the steering wheel being turned to the full lock position or a tire hitting a curb

      Min.: 0 times

      Max.: 255 times

      -

      -

      Assist Limit Cnt(Vehicle Spd Sig Malf)

      Number of times that assist power is set to a value suitable for high-speed driving when driving at high speeds due to an abnormal vehicle speed signal

      Min.: 0 times

      Max.: 255 times

      -

      -

      Assist Limit Record 1

      Information of assist limit that was used in the past or is currently in use (latest history)

      Unrec, Mtr Overheat, Pow Vol Low, Pow Vol Low Prevent, Eng Stall, Ready OFF, Mtr Overload, DC-DC Malf, Vhcl Spd Sig Malf, Batt Vol Keep

      -

      -

      Record 1 Key Cycle

      Number of times that the ignition switch was turned to ON before Assist Limit Record 1 was stored

      Min.: 0 times

      Max.: 65535 times

      -

      -

      Record 1 Key Cycle Elapsed Time

      Period of time that elapsed after the ignition switch was turned to ON before Assist Limit Record 1 was stored

      Min.: 0.0 s

      Max.: 53687091.1 s

      -

      -

      Assist Limit Record 2

      Information of assist limit that was used in the past (second latest history)

      Unrec, Mtr Overheat, Pow Vol Low, Pow Vol Low Prevent, Eng Stall, Ready OFF, Mtr Overload, DC-DC Malf, Vhcl Spd Sig Malf, Batt Vol Keep

      -

      -

      Record 2 Key Cycle

      Number of times that the ignition switch was turned to ON after Assist Limit Record 2 was stored before Assist Limit Record 1 was stored

      Min.: 0 times

      Max.: 65535 times

      -

      -

      Record 2 Key Cycle Elapsed Time

      Period of time that elapsed after the ignition switch was turned to ON before Assist Limit Record 2 was stored

      Min.: 0.0 s

      Max.: 53687091.1 s

      -

      -

      Assist Limit Record 3

      Information of assist limit that was used in the past (third latest history)

      Unrec, Mtr Overheat, Pow Vol Low, Pow Vol Low Prevent, Eng Stall, Ready OFF, Mtr Overload, DC-DC Malf, Vhcl Spd Sig Malf, Batt Vol Keep

      -

      -

      Record 3 Key Cycle

      Number of times that the ignition switch was turned to ON after Assist Limit Record 3 was stored before Assist Limit Record 2 was stored

      Min.: 0 times

      Max.: 65535 times

      -

      -

      Record 3 Key Cycle Elapsed Time

      Period of time that elapsed after the ignition switch was turned to ON before Assist Limit Record 3 was stored

      Min.: 0.0 s

      Max.: 53687091.1 s

      -

      -

      Current Key Cycle

      Number of times that the ignition switch was turned to ON since Assist Limit Record 1 was stored

      Min.: 0 times

      Max.: 65535 times

      -

      -

      Current Key Cycle Elapsed Time

      Period of time that elapsed after Assist Limit Record 1 was stored before the ignition switch was turned to ON

      Min.: 0.0 s

      Max.: 53687091.1 s

      -

      -

      Steering Angle

      Steering angle

      Min.: -3072.0 deg

      Max.: 3070.5 deg

      -

      -

      The Number of DTCs

      Number of detected DTCs when freeze frame data stored

      Min.: 0

      Max.: 255

      0 to 255

      -