POWER STEERING SYSTEM DATA LIST / ACTIVE TEST


  1. DATA LIST

    Tech Tips

    Using the intelligent tester 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 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 engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the intelligent tester on.

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

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

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

      Vehicle speed from meter/

      Min.: 0 km/h (0 mph)

      Max.: 300 km/h (186.4 mph)

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

      Engine revolution/

      Min.: 0 rpm

      Max.: 12800 rpm

      		 No significant fluctuation 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 Power steering is in operation
      Command Value Current

      Demanded amount of current to motor/

      Min.: -327.68 A

      Max.: 327.67 A

      		 Value changes in proportion to steering effort Power steering is in operation
      Steering Angle Velocity

      Steering angle speed/

      Min.: -32768 deg/s

      Max.: 32767 deg/s

      		 Value changes in proportion to steering speed Steering wheel is turned
      Thermistor Temperature

      ECU substrate temperature/

      Min.: -40°C (-40°F)

      Max.: 150°C (302°F)

      		 - Engine switch on (IG)
      PIG Power Supply

      Power source voltage to activate motor/

      Min.: 0 V

      Max.: 20.1531 V

      		 11 to 14 V Power steering is in operation
      IG Power Supply

      ECU power source voltage/

      Min.: 0 V

      Max.: 20.1531 V

      		 11 to 14 V Engine switch on (IG)
      Steering Angle Sens Sig

      Steering angle sensor signal status/

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

      		 OK

      NG(1): The leaning has not completed.

      NG(2): Steering Sensor Abnormal

      NG(3): Communication Error
      Torque Sensor 1 Output

      Torque sensor 1 rotation angle/

      Min.: 0 deg

      Max.: 1441.77 deg

      		 Value changes from 0 to 360° every 3° of steering angle Steering wheel is turned
      Torque Sensor 2 Output

      Torque sensor 2 rotation angle/

      Min.: 0 deg

      Max.: 1441.77 deg

      		 Value changes from 0 to 360° every 3° of steering angle Steering wheel is turned
      TRQ1 Zero Point Value

      Zero point value of torque sensor 1/

      Min.: 0 deg

      Max.: 1441.77 deg

      		 Value differs depending on vehicle Steering wheel is not turned (without load)
      TRQ2 Zero Point Value

      Zero point value of torque sensor 2/

      Min.: 0 deg

      Max.: 1441.77 deg

      		 Value differs depending on vehicle Steering wheel is not turned (without load)
      Steering Wheel Torque

      Steering torque/

      Min.: -327.68 Nm

      Max.: 7.0 Nm

      		 Value changes in proportion to steering effort Steering wheel is turned
      Motor Rotation Angle

      Motor rotation angle/

      Min.: 0 deg

      Max.: 1441.77 deg

      		 Value changes from 0 to 360° every 3° of steering angle Steering wheel is turned
      Command Val Current 2

      Amount of current demanded by motor 2/

      Min.: -327.68 A

      Max.: 327.67 A

      		 - -
      PIG2 Voltage

      Motor drive voltage after pressurization

      Min.: 0 V

      Max.: 45.995 V

      		 27 to 34 V Power steering is in operation
      Motor Voltage

      Motor power source voltage/

      Min.: 0 V

      Max.: 45.995 V

      		 27 to 34 V Power steering is in operation
      Motor Terminal Volt(U)

      Motor terminal voltage (U phase)/

      Min.: 0 V

      Max.: 46.667 V

      		 0 to 34 V Power steering is in operation
      Motor Terminal Volt(V)

      Motor terminal voltage (V phase)/

      Min.: 0 V

      Max.: 46.667 V

      		 0 to 34 V Power steering is in operation
      Motor Terminal Volt(W)

      Motor terminal voltage (W phase)/

      Min.: 0 V

      Max.: 46.667 V

      		 0 to 34 V Power steering is in operation
      IG ON/OFF Times

      Number of times IG switch is turned on after DTC detection/

      Min.: 0 time

      Max.: 65535 times

      		 - This is a number of turning engine switch after DTCs are detected.
      Motor Overheat Record

      Continuous overheat prevention control record/

      Unrec or Rec

      		 - -
      Motor Lo Power Record

      PIG power source voltage drop record/

      Unrec or Rec

      		 - -
      Eng Rev Inter Record

      Record of engine revolution signal interruption/

      Unrec or Rec

      		 - -
      Str Angl Inter Record

      Record of steering angle sensor signal interruption/

      Unrec or Rec

      		 - -
      Spd Sig Invalid Record

      Record of vehicle speed signal invalid/

      REC or UNREC

      Unrec or Rec

      		 - -
      PS Assist Signal

      Power steering assist signal/

      ON or OFF

      		 - Engine switch on (IG)
      The Number of DTCs

      Number of detected DTCs when freeze frame data is stored/

      Min.: 0

      Max.: 255

      		 - -

  2. ACTIVE TEST

    Tech Tips

    Using the intelligent tester 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 engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the intelligent tester on.

    5. Enter the following menus: Body Electrical / Combination Meter / Active Test.

    6. According to the display on the intelligent tester, read the "Active Test".

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Indicat. EPS PS indicator light ON or OFF -