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 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 intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the intelligent tester on.

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

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

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

    Vehicle speed from meter/

    Min.: 0.0 km/h (0 mph)

    Max.: 300.0 km/h (186.4 mph)

    0.0 km/h (0 mph) Turn the ignition switch ON and vehicle stopped
    No significant fluctuation Vehicle driven at constant speed
    Engine Revolution

    Engine revolution

    Min: 0 rpm

    Max: 8160 rpm

    No significant fluctuation Engine running at constant speed
    Motor Actual Current

    Current to motor/

    Min.: -327.68 A

    Max.: 327.67 A

    Value changes in proportion to steering effort Ignition switch ON and power steering is in operation
    Command Value Current

    Requested current to motor/

    Min.: -327.68 A

    Max.: 327.67 A

    Value changes in proportion to steering effort Ignition switch ON and power steering is in operation
    Thermistor Temperature

    ECU substrate temperature/

    Min.: -50.0°C (-58°F)

    Max.: 150.0°C (302°F)

    -50.0 to 150.0°C (-58 to 302°F) -
    PIG Power Supply

    Power source voltage to activate motor/

    Min.: 0.0000 V

    Max.: 20.1531 V

    11 to 14 V Ignition switch ON
    IG Power Supply

    ECU power source voltage/

    Min.: 0.0000 V

    Max.: 20.1531 V

    11 to 14 V Ignition switch ON
    Steering Wheel Torque

    Steering wheel torque/

    Min.: -327.68 Nm

    Max.: 7.00 Nm

    Value changes in proportion to steering effort Ignition switch ON and power steering is in operation
    Torque Sensor 1 Output

    Torque sensor 1 output value/

    Min.: 0.0000 V

    Max.: 4.9725 V

    2.3 to 2.7 V The engine is running and steering wheel not turned (without load)
    2.5 to 3.8 V The engine is running and steering wheel turned to right with vehicle stopped
    1.2 to 2.5 V The engine is running and steering wheel turned to left with vehicle stopped
    Torque Sensor 2 Output

    Torque sensor 2 output value/

    Min.: 0.0000 V

    Max.: 4.9725V

    2.3 to 2.7 V The engine is running and steering wheel not turned (without load)
    1.2 to 2.5 V The engine is running and steering wheel turned to right with vehicle stopped
    2.5 to 3.8 V The engine is running and steering wheel turned to left with vehicle stopped
    TRQ1 Zero Point Value

    Zero point value of torque sensor 1/

    Min.: 0.0000 V

    Max.: 5.0000 V

    2.3 to 2.7 V Turn the ignition switch ON and steering wheel not turned (without load)
    TRQ2 Zero Point Value

    Zero point value of torque sensor 2/

    Min.: 0.0000 V

    Max.: 5.0000 V

    2.3 to 2.7 V Turn the ignition switch ON and steering wheel not turned (without load)
    Motor Terminal Volt (+)

    Motor terminal M1 voltage/

    Min.: 0.0 V

    Max.: 25.5 V

    11 to 14 V Turn the ignition switch ON and steering wheel turned to right
    6 to 11 V Turn the ignition switch ON and steering wheel turned to left
    Motor Terminal Volt (-)

    Motor terminal M2 voltage/

    Min.: 0.0 V

    Max.: 25.5 V

    6 to 11 V Turn the ignition switch ON and steering wheel turned to right
    11 to 14 V Turn the ignition switch ON and steering wheel turned to left
    IG ON/OFF Times

    Number of times of power switch ON/OFF after fail detection/

    Min.: 0 time

    Max.: 65535 times

    - This value indicates the number of times of IG ON/OFF after the latest DTC detection
    Motor Overheat Record

    Continuous overheat prevention control record/

    Unrec or Rec

    Unrec -
    Motor Lo Power Record

    PIG power source voltage drop record/

    Unrec or Rec

    Unrec -
    Spd Sig Invalid Record

    Vehicle speed signal invalid record/

    Unrec or Rec

    Unrec -
    The Number of DTCs

    Number of detected DTCs when freeze frame data stored/:

    Min.: 0

    Max.: 255

    0 to 255 -