LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Highlander LE Plus, FWD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Lane Departure Alert System (W/ Steering Control) - Diagnostics - Introduction - (Except Hybrid) >> LANE DEPARTURE ALERT SYSTEM (W/ Steering Control) >> Data List / Active Test [11/2016 - ] >> Data List / Active Test [11/2016 - ]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data List / Active Test [11/2016 - ]

  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. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / LKA/LDA / Data List.
    5. Read the Data List according to the display on the Techstream.

      Chassis > LKA/LDA > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      LDA Control Lane departure alert system control status Prohibit or Permit Prohibit: Control prohibited
      Permit: Control permitted      		 -
      Turn Signal Switch (Right) Turn signal switch (right) status OFF or ON ON: Turn signal light switch on (right)
      OFF: Turn signal light switch off      		 -
      Turn Signal Switch (Left) Turn signal switch (left) status OFF or ON ON: Turn signal light switch on (left)
      OFF: Turn signal light switch off      		 -
      Destination Information - - - This item is displayed on the Techstream but is not used.
      Left Lane Indicator Left lane marker detection status Nothing, Heavy, Thin or H blink Nothing: Lane departure alert system deactivated
      Heavy: Left lane marker detected
      Thin: Left lane marker not detected
      H blink: Departing from lane      		 -
      Right Lane Indicator Right lane marker detection status Nothing, Heavy, Thin or H blink Nothing: Lane departure alert system deactivated
      Heavy: Right lane marker detected
      Thin: Right lane marker not detected
      H blink: Departing from lane      		 -
      Skid Control Buzzer Demand Lane departure alert Buzzer Demand Status OFF or ON OFF: Lane departure alert buzzer not operating
      ON: Lane departure alert buzzer operating      		 -
      The Number of DTCs Number of stored DTCs 0 to 255 Number of stored DTCs -

      HINT: 

      The Data List will also be displayed when you enter the following menus, but do not use this: Chassis / LKA/LDA (Sub) / Data List.

      Chassis > LKA/LDA (Sub) > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine / HV Communication Failure - - - This item is displayed on the Techstream but is not used.
      DRS Communication Failure - - - This item is displayed on the Techstream but is not used.
      Meter Communication Failure - - - This item is displayed on the Techstream but is not used.
      Yaw Rate Sensor Communication Failure - - - This item is displayed on the Techstream but is not used.
      Steering Angle Sensor Communication Failure - - - This item is displayed on the Techstream but is not used.
      EPS Communication Failure - - - This item is displayed on the Techstream but is not used.
      VSC Communication Failure - - - This item is displayed on the Techstream but is not used.
      VGRS Communication Failure - - - This item is displayed on the Techstream but is not used.
    6. Enter the following menus: Chassis / Front Recognition Camera / Data List.
    7. Read the Data List according to the display on the Techstream.

      Chassis > Front Recognition Camera > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Vehicle Information (2WD/4WD) Vehicle information (drivetrain) stored in forward recognition camera 2WD, 4WD or Unknown 2WD: for 2WD
      4WD: for AWD
      Unknown: Vehicle information not confirmed      		 -
      Vehicle Information (Conv/HV) Vehicle information (conventional/hybrid) stored in forward recognition camera Conv, HV or Unknown Conv: Conventional
      HV: Hybrid vehicle
      Unknown: Vehicle information not confirmed      		 -
  2. 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. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / LKA/LDA / Active Test.
    5. Perform Active Test according to the display on the Techstream.

      HINT: 

      The ignition switch must be turned to ON to proceed with the Active Test using the Techstream.

      Chassis > LKA/LDA > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      LDA Buzzer Sounds the lane departure alert buzzer ON/OFF Confirm that the vehicle is stopped with the ignition switch ON.
      Steering Wheel Vibration - - This item is displayed on the Techstream but is not used.
    6. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    7. Perform Active Test according to the display on the Techstream.

      HINT: 

      The ignition switch must be turned to ON to proceed with the Active Test using the Techstream.

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Meter Display 1 Multi-information display OFF or ALL -
scientia non olet · About LEMON Manuals