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Data List / Active Test

  1. DATA LIST 

    HINT: 

    Using the 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 off.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the Techstream on.
    5. Enter the following menus: Chassis / EMPS / Data List.
    6. According to the display on the Techstream, 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 operating
      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 operating
      Steering Angle Velocity Steering angle speed
      Min.: -327.68 deg/s
      Max.: 327.67 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)      		 - Ignition switch ON
      PIG Power Supply Power source voltage to activate motor
      Min.: 0 V
      Max.: 20.1531 V      		 9 to 16 V Power steering is operating
      IG Power Supply ECU power source voltage
      Min.: 0 V
      Max.: 20.1531 V      		 9 to 16 V Ignition switch ON
      Steering Angle Sens Sig Signal state of steering angle sensor
      OK, NG (1), NG (2), NG (3)      		 OK Steering angle sensor signal is normal.
      NG (1) Steering angle sensor zero point is not recorded.
      NG (2) Steering angle sensor is 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 Ignition switch ON and power steering is operating
      Motor Rotation Angle Motor rotation angle
      Min.: 0 deg
      Max.: 1441.77 deg      		 During steering operation, motor rotation angle value changes from 0 to 360° Power steering is operating
      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 operating
      PIG2 Voltage Voltage after boosting by coil
      Min.: 0 V
      Max.: 45.955 V      		 Approximately 27 V Ignition switch ON
      Steering wheel is not turned
      Value changes within 4 to 35 V range Ignition switch ON
      Steering wheel is turned
      Motor Voltage Motor power supply voltage
      Min.: 0 V
      Max.: 45.955 V      		 Approximately 27 V Ignition switch ON
      Steering wheel is not turned
      Value changes within 4 to 35 V range Ignition switch ON
      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 Ignition switch ON
      Steering wheel is turned
      Motor Terminal Volt(V) Motor terminal voltage (V phase)
      Min.: 0 V
      Max.: 46.667 V      		 Value changes within 4 to 35 V range Ignition switch ON
      Steering wheel is turned
      Motor Terminal Volt(W) Motor terminal voltage (W phase)
      Min.: 0 V
      Max.: 46.667 V      		 Value changes within 4 to 35 V range Ignition switch ON
      Steering wheel is turned
      Torque Sensor 1 Output Torque sensor voltage
      Min.: 0 V
      Max.: 5 V      		 2.3 to 2.7 V Ignition switch ON
      Steering wheel is not turned (without load)
      2.5 to 3.8 V Ignition switch ON
      Steering wheel is turned to right with vehicle stopped
      1.2 to 2.5 V Ignition switch ON
      Steering wheel is turned to left with vehicle stopped
      Torque Sensor 2 Output Torque sensor voltage
      Min.: 0 V
      Max.: 5 V      		 2.3 to 2.7 V Ignition switch ON
      Steering wheel is not turned (without load)
      1.2 to 2.5 V Ignition switch ON
      Steering wheel is turned to right with vehicle stopped
      2.5 to 3.8 V Ignition switch ON
      Steering wheel is turned to left with vehicle stopped
      TRQ1 Zero Point Value Torque sensor voltage
      Min.: 0 V
      Max.: 5 V      		 - Steering wheel is not turned
      TRQ2 Zero Point Value Torque sensor voltage
      Min.: 0 V
      Max.: 5 V      		 - Steering wheel is not turned
      IG ON/OFF Times Number of times of ignition switch ON/OFF after fail detection/
      Min.: 0 time
      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 UNLEC      		 - -
      Spd Sig Invalid Record Record of vehicle speed signal invalid
      REC or UNREC      		 UNREC Ignition switch ON
      PS Assist Signal Power steering assist signal
      ON or OFF      		 OFF No steering load (in neutral position)
      ON Ignition switch ON
      Steering wheel is turned
      The Number of DTCs Number of detected DTCs when freeze frame data stored
      Min.: 0
      Max.: 255      		 - -
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