LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Scion >> 2009 >> xB Automatic >> Repair and Diagnosis >> Steering >> Power Steering >> Power Steering System >> Data List / Active Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data List / Active Test

  1. DATA LIST 

    HINT:

    Using an intelligent tester or Techstream 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 to OFF.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the Techstream on.
    5. Enter the following menu items: Chassis / EMPS / Data List /
    6. According to the display on Techstream, read the "DATA LIST".
      1. EMPS: 
        EMPS DATA LIST REFERENCE

        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 (187.5 mph)        		 0 km/h (0 mph): Vehicle stopped -
        No significant fluctuation: Vehicle 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 effort: Steering wheel is turned -
        Thermistor Temperature ECU substrate temperature:
        Min.: -40°C (-40°F)
        Max.:150°C (302°F)        		 -40°C (-40°F)to 150°C (302°F): Ignition switch ON -
        PIG Power Supply Power source voltage to active motor:
        Min.:0V
        Max.: 20.1531 V        		 11 to 14 V: Power steering is in operation -
        IG Power Supply ECU power source voltage:
        Min.:0V
        Max.: 20.1531 V        		 11 to 14 V: Ignition switch ON -
        Steering Angle Sens Sig Steering angle sensor signal state: OK, NG (1), NG (2) or NG (3) OK: Steering angle sensor signal is received
        NG (1): Steering angle sensor learning has not completed
        NG (2): Steering sensor abnormal
        NG (3): Communication error        		 -
        Steering Wheel Torque Steering wheel torque:
        Min.: -327.68 N*m
        Max.: 7 N*m        		 Value changes in proportion to steering effort: Power steering is in operation -
        Motor Rotation Angle Motor rotation angle:
        Min.: 0 deg
        Max.: 1441.77 deg        		 Motor rotation angle value changes from 0 to 360 deg: Steering wheel is 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: Power steering is in operation -
        PIG2 Voltage Coil rear pressurization voltage:
        Min.:0V
        Max.: 45.955 V        		 Approximately 27 V: Steering wheel is not turned -
        Value changes within 4 to 35 V range: Steering wheel is turned -
        Motor Voltage Motor power supply voltage:
        Min.:0V
        Max.: 45.955 V        		 Approximately 27 V: Steering wheel is not turned -
        Value changes within 4 to 35 V range: Steering wheel is turned -
        Motor Terminal Volt (U) Motor terminal voltage (U phase):
        Min.: 0 V
        Max.: 46.667 V        		 Value changes within 4 to 35 V range: Steering wheel is turned -
        Motor Terminal Volt (V) Motor terminal voltage (V phase):
        Min.:0V
        Max.: 46.667 V        		 Value changes within 4 to 35 V range: Steering wheel is turned -
        Motor Terminal Volt (W) Motor terminal voltage (W phase):
        Min.:0V
        Max.: 46.667 V        		 Value changes within 4 to 35 V range: Steering wheel is turned -
        Torque Sensor 1 Output Torque sensor voltage:
        Min.: 0 V
        Max.: 5 V        		 2.3 to 2.7 V: Steering wheel is not turned (without load) -
        2.5 to 3.8 V: Steering wheel turned to right with vehicle stopped -
        1.2 to 2.5 V: Steering wheel turned to left with vehicle stopped -
        Torque Sensor 2 Output Torque sensor voltage:
        Min.:0V
        Max.: 5 V        		 2.3 to 2.7 V: Steering wheel is not turned (without load) -
        1.2 to 2.5 V: Steering wheel turned to right with vehicle stopped -
        2.5 to 3.8 V: Steering wheel turned to left with vehicle stopped -
        TRQ1 Zero Point Value Torque sensor voltage:
        Min.:0V
        Max.: 5 V        		 Values differ depending on vehicle: Steering wheel is not turned -
        TRQ2 Zero Point Value Torque sensor voltage:
        Min.:0V
        Max.: 5 V        		 Values differ depending on vehicle: Steering wheel is not turned -
        IG ON/OFF Times Number of times of ignition switch ON/OFF after fail detection:
        Min.: 0 times
        Max.: 65535 times        		 - -
        Motor Overheat Record Continuous overheat prevention control record:
        Rec or Unrec        		 Unrec -
        Motor Lo Power Record PIG power source voltage drop record:
        Rec or Unrec        		 Unrec -
        Eng Rev Inter Record Record of engine revolution signal interruption:
        Rec or Unrec        		 Unrec -
        Str Angle Inter Record Record of steering sensor signal interruption occurrence display:
        Rec or Unrec        		 Unrec -
        Spd Sig Invalid Record Record of vehicle speed signal invalid:
        Rec or Unrec        		 Unrec -
        PS Assist Signal Power steering assist signal:
        ON or OFF        		 OFF: No steering load (in neutral position) -
        ON: Steering wheel is turned -
        The Number of DTCs Number of detected DTCs when freeze frame data stored:
        Min.: 0
        Max.: 255        		 0 -
scientia non olet · About LEMON Manuals