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 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:

    Minimum: 0 km/h (mph), Maximum: 300 km/h (186.4 mph)

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

    Engine revolution:

    Minimum: 0 rpm, Maximum: 12800 rpm

    		 Engine running at constant speed No significant fluctuation
    Motor Actual Current

    Current to motor:

    Minimum: -327.68 A, Maximum: 327.67 A

    		 Value changes in proportion to steering effort -
    Command Value Current

    Requested current to motor:

    Minimum: -327.68 A, Maximum: 327.67 A

    		 Value changes in proportion to steering effort -
    Steering Angle Velocity

    Steering angle speed:

    Minimum: -32768 deg/s, Maximum: 32767 deg/s

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

    ECU substrate temperature:

    Minimum: -40°C, Maximum: 150°C

    		 - -
    PIG Power Supply

    Power source voltage to activate motor:

    Minimum: 0 V, Maximum: 20.1531 V

    		 11 to 14 V: Always -
    Steering Wheel Torque

    Steering Wheel Torque:

    Minimum: -327.68 Nm, Maximum: 7 Nm

    		 Value changes in proportion to steering effort Ignition switch ON and power steering is operating
    Motor Voltage

    Motor Power Supply Voltage:

    Minimum: 0 V, Maximum: 98 V

    		 11 to 14 V: Ignition switch ON -
    Torque Sensor 1 Output

    Torque sensor 1 output value:

    Minimum: 0 V, Maximum: 5 V

    		 2.3 to 2.7 V: Steering wheel not turned (without load) Read value with vehicle stopped
    2.5 to 4.7 V: Steering wheel turned to right Read value with vehicle stopped
    0.3 to 2.5 V: Steering wheel turned to left Read value with vehicle stopped
    Torque Sensor 2 Output

    Torque sensor 2 output value:

    Minimum: 0 V, Maximum: 5 V

    		 2.3 to 2.7 V: Steering wheel not turned (without load) Read value with vehicle stopped
    2.5 to 4.7 V: Steering wheel turned to left Read value with vehicle stopped
    0.3 to 2.5 V: Steering wheel turned to right Read value with vehicle stopped
    Motor Terminal Volt (+)

    Motor terminal M1 voltage:

    Minimum: 0 V, Maximum: 25.5 V

    for LHD:

    11 to 14 V: Steering wheel turned to right

    for RHD:

    Below 7 V: Steering wheel turned to right

    		 -

    for LHD:

    Below 7 V: Steering wheel turned to left

    for RHD:

    11 to 14 V: Steering wheel turned to left

    		 -
    Motor Terminal Volt (-)

    Motor terminal M2 voltage:

    Minimum: 0 V, Maximum: 25.5 V

    for LHD:

    Below 7 V: Steering wheel turned to right

    for RHD:

    11 to 14 V: Steering wheel turned to right

    		 -

    for LHD:

    11 to 14 V: Steering wheel turned to left

    for RHD:

    Below 7 V: Steering wheel turned to left

    		 -
    IG ON/OFF Times

    Number of times ignition switch turned to ON after DTC detection:

    Minimum: 0 times, Maximum: 255 times

    		 - -
    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 -
    Eng Rev Inter Record

    Status of the Record of Engine Revolution Signal Interrupt:

    Unrec or Rec

    		 Unrec -
    Spd Sig Invalid Record

    Record of vehicle speed signal invalid:

    Unrec or Rec

    		 Unrec -
    Battery Voltage Lo Record

    Battery voltage drop record:

    Minimum: 0 times, Maximum: 65535 times

    		 0 times -
    Battery Voltage

    Battery voltage:

    Minimum: 0 V, Maximum: 25.5 V

    		 11 to 14 V: Always -
    PS Assist Signal

    Status of the Record of Power Steering Assist Signal:

    ON or OFF

    		 ON or OFF -
    Stop and Start Control Mode* Status of stop and start system control IG / Run / Stopreq / Stop / Restart

    IG: Ignition switch ON (engine stopped)

    Run: Engine running

    Stopreq: Transition to idling stop

    Stop: Idling stop

    Restart: Engine restarting

    		 -
    The Number of DTCs

    Number of detected DTCs when freeze frame data stored:

    Minimum: 0, Maximum: 255

    		 - -

    *: w/ Stop and Start System