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Home >> Toyota >> 2009 >> RAV4 Base, 2.5 F, AWD >> Repair and Diagnosis >> Steering >> Power Steering >> Electronic Power Steering System >> Data List/Active Test

Data List/Active Test

  1. READ 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 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 

      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 constant speed
      Engine Revolution Show the 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
      Max.: 150°C      		 - Ignition switch ON
      PIG Power Supply Power source voltage to activate motor:
      Min.: 0 V
      Max.: 20.1531 V      		 11 to 14 V Power steering in operation
      IG Power Supply ECU power source voltage:
      Min.: 0 V
      Max.: 20.1531 V      		 11 to 14 V Ignition switch ON
      Steering Wheel Torque Steering wheel torque:
      Min.: -327.68 Nm
      Max.: 7 Nm      		 - -
      Motor Rotation Angle Motor rotation angle:
      Min.: 0 deg
      Max.: 1441.77 deg      		 During steering operation, motor rotation angle value changes from 0 to 1441.77 deg Power steering in operation
      Motor Voltage Motor power supply voltage:
      Min.: 0 V
      Max.: 98 V      		 - Power steering in operation
      Motor Terminal Volt (U) Motor terminal voltage (U phase):
      Min.: 0 V
      Max.: 98 V      		 When the steering wheel is turned, a voltage between 1 V and approximately 1 V less than the battery voltage is displayed. Engine running and steering wheel turned
      Motor Terminal Volt (V) Motor terminal voltage (V phase):
      Min.: 0 V
      Max.: 98 V      		 When the steering wheel is turned, a voltage between 1 V and approximately 1 V less than the battery voltage is displayed. Engine running and steering wheel turned
      Motor Terminal Volt (W) Motor Terminal voltage (W phase):
      Min.: 0 V
      Max.: 98 V      		 When the steering wheel is turned, a voltage between 1 V and approximately 1 V less than the battery voltage is displayed. Engine running and steering wheel turned
      IG ON/OFF Times Ignition switch ON/off number of times 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 -
      Spd Sig Invalid Record Record of vehicle speed signal invalid:
      Rec or Unrec      		 Unrec -
      Battery Voltage Lo Record Number of battery voltage low:
      Min.: 0 times
      Max.: 65535 times      		 - -
      Battery Voltage Battery voltage:
      Min.: 0 V
      Max.: 25.5 V      		 11 to 14 V -
      PS Assist Signal Power steering assist signal:
      ON or OFF      		 - -
      The Number of DTCs Number of detected DTCs when freeze frame data stored:
      Min.: 0
      Max.: 255      		 - -
  2. PERFORM ACTIVE TEST 

    HINT:

    Using the Techstream 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 ignition switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch ON.
    4. Turn the Techstream on.
    5. Enter the following menus: Body/Combination Meter/Active Test.
    6. According to the display on the Techstream, perform Active Test.

      Combination Meter 

      ACTIVE TEST REFERENCE

      Tester Display Test Part Control Range Diagnostic Note
      Indicat. EPS P/S indicator Indicator ON or OFF Confirm that vehicle is stopped, engine idling
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