POWER STEERING SYSTEM DATA LIST / ACTIVE TEST


  1. DATA LIST

    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. 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.

      EMPS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Meter Vehicle Velocity

      Vehicle speed from skid control ECU/

      Min.: 0.0 km/h (0.0 mph)

      Max.: 300.0 km/h (186.4 mph)

      0 km/h (0 mph) The vehicle is stopped.
      No significant fluctuation The vehicle is driven at a constant speed.
      Engine Revolution

      Engine speed/

      Min.: 0 rpm

      Max.: 12800 rpm

      No significant fluctuation The engine is 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 engine is running and the steering wheel is being turned.
      Command Value Current

      Demanded amount of current to motor/

      Min.: -327.68 A

      Max.: 327.67 A

      Value changes in proportion to steering effort The engine is running and the steering wheel is being turned.
      Steering Angle Velocity

      Steering angle speed/

      Min.: -32768 deg/s

      Max.: 32767 deg/s

      Value changes in proportion to steering effort The engine is running and the steering wheel is being turned.
      Thermistor Temperature

      ECU substrate temperature/

      Min.: -50.0°C (-58.0°F)

      Max.: 150.0°C (302.0°F)

      - The ignition switch is ON.
      PIG Power Supply

      Power source voltage to active motor/

      Min.: 0.0000 V

      Max.: 20.1531 V

      9 to 16 V The engine is running and power steering is operating.
      IG Power Supply

      ECU power source voltage/

      Min.: 0.0000 V

      Max.: 20.1531 V

      9 to 16 V The ignition switch is ON.
      Steering Wheel Torque

      Steering wheel torque/

      Min.: -7.00 Nm

      Max.: 7.00 Nm

      Value changes in proportion to steering effort The engine is running and the steering wheel is being turned.
      Motor Rotation Angle

      Motor rotation angle/

      Min.: 0.000 deg

      Max.: 360.000 deg

      Motor rotation angle value changes from 0 to 360° The engine is running and the steering wheel is being turned.
      Command Val Current 2

      Demanded amount of current to motor/

      Min.: -327.68 A

      Max.: 327.67 A

      Value changes in proportion to steering effort The engine is running and the steering wheel is being turned.
      PIG2 Voltage

      Coil rear pressurization voltage/

      Min.: 0.000 V

      Max.: 98.000 V

      Approximately 27 V The engine is running and the steering wheel is not being turned.
      Value changes between 16 and 35 V The engine is running and the steering wheel is being turned.
      Motor Voltage

      Motor power supply voltage/

      Min.: 0.000 V

      Max.: 98.000 V

      Approximately 27 V The engine is running and the steering wheel is not being turned.
      Value changes between 4 and 35 V The engine is running and the steering wheel is being turned.
      Motor Terminal Volt(U)

      Motor terminal voltage (U phase)/

      Min.: 0.000 V

      Max.: 98.000 V

      Value changes between 4 and 35 V The engine is running and the steering wheel is being turned.
      Motor Terminal Volt(V)

      Motor terminal voltage (V phase)/

      Min.: 0.000 V

      Max.: 98.000 V

      Value changes between 4 and 35 V The engine is running and the steering wheel is being turned.
      Motor Terminal Volt(W)

      Motor terminal voltage (W phase)/

      Min.: 0.000 V

      Max.: 98.000 V

      Value changes between 4 and 35 V The engine is running and the steering wheel is being turned.
      Torque Sensor 1 Output

      Torque sensor 1 output voltage/

      Min.: 0.0000 V

      Max.: 5.0000 V

      2.3 to 2.7 V The engine is running and the steering wheel is not turned (without load).
      2.3 to 3.8 V The engine is running and the steering wheel is turned to the right when the vehicle is stopped.
      1.2 to 2.7 V The engine is running and the steering wheel is turned to the left when the vehicle is stopped.
      Torque Sensor 2 Output

      Torque sensor 2 output voltage/

      Min.: 0.0000 V

      Max.: 5.0000 V

      2.3 to 2.7 V The engine is running and the steering wheel is not turned (without load).
      1.2 to 2.7 V The engine is running and the steering wheel is turned to the right when the vehicle is stopped.
      2.3 to 3.8 V The engine is running and the steering wheel is turned to the left when the vehicle is stopped.
      TRQ1 Zero Point Value

      Torque sensor 1 zero point voltage/

      Min.: 0.0000 V

      Max.: 5.0000 V

      Values differ depending on vehicle The engine is running and the steering wheel is not being turned.
      TRQ2 Zero Point Value

      Torque sensor 2 zero point voltage/

      Min.: 0.0000 V

      Max.: 5.0000 V

      Values differ depending on vehicle The engine is running and the steering wheel is not being turned.
      IG ON/OFF Times

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

      Min.: 0 times

      Max.: 65535 times

      - This value indicates the number of times the ignition switch is turned to ON and off after the latest DTC detection.
      Motor Overheat Record

      Continuous overheat prevention control record/

      Unrec or Rec

      Unrec -
      Motor Lo Power Record

      PIG power supply voltage drop record/

      Unrec or Rec

      Unrec -
      Eng Rev Inter Record

      Record of engine speed interruption/

      Unrec or Rec

      Unrec -
      Spd Sig Invalid Record

      Record of vehicle speed signal invalid/

      Unrec or Rec

      Unrec -
      Battery Voltage Lo Record

      Battery voltage reduction history/

      Min.: 0 times, Max.: 65535 times

      0 to 65535 -
      The Number of DTCs

      Number of stored DTCs when freeze frame data stored/

      Min.: 0

      Max.: 255

      0 to 255 -