AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM INITIALIZATION

Note


  • The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during headlight ECU sub-assembly LH removal/installation are shown below.

    Performed Work or System Condition Necessary Procedures Proceed to
    Replacement of the headlight ECU sub-assembly LH Synchronize the vehicle information SYNCHRONIZE VEHICLE INFORMATION
    Perform headlight ECU sub-assembly LH initialization HEADLIGHT ECU SUB-ASSEMBLY LH INITIALIZATION
    Replacement of the rear height control sensor sub-assembly LH, removal and reinstallation of the rear height control sensor sub-assembly LH, replacement of the suspension, etc. have been performed. Perform headlight ECU sub-assembly LH initialization HEADLIGHT ECU SUB-ASSEMBLY LH INITIALIZATION

  • A new headlight ECU sub-assembly LH cannot operate until the synchronize the vehicle information.

  • After replacing the headlight ECU sub-assembly LH, it is necessary to perform synchronize the vehicle information and initialization.

  • Even if the headlight ECU sub-assembly RH is replaced with a new one, synchronize the vehicle information and initialization are not necessary.

  • Adjust the headlight aim after initializing the headlight ECU sub-assembly LH.

  • When a malfunction is detected in the automatic headlight beam level control system, rear height control sensor sub-assembly LH signal initialization is impossible. Perform troubleshooting before initialization.


  1. SYNCHRONIZE VEHICLE INFORMATION


    1. When using the GTS:


      1. Turn the power switch off.

      2. Connect the GTS to the DLC3.

      3. Using the GTS, check that DTC B2451: "Vehicle Specifications have not been Stored" has been stored.

      4. Enter the following menus: Body Electrical / HL AutoLeveling / Utility / ECU Information Sync.


        Body Electrical > HL AutoLeveling > Utility
        Tester Display
        ECU Information Sync

      5. Check the display on the GTS and press "Next".

      6. Check that the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display continuously blinks 6 times at 2 Hz.

      7. Press "Exit" and turn the power switch off.

        Note

        After synchronizing the vehicle information, initialize the headlight ECU sub-assembly LH.

        Tech Tips


        • If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display does not start blinking after performing step (v), perform the procedure again.

        • If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display changes from blinking to illuminated, the rear height control sensor sub-assembly LH may be malfunctioning.

    2. When not using the GTS:


      1. Turn the power switch on (IG) and check that "Headlight System Malfunction Visit Your Dealer" warning message is displayed on the multi-information display.

      2. Using the headlight dimmer switch, turn the low beam headlights on and off 8 times within 20 seconds after turning the power switch on (IG).

        Note

        If the low beam headlights illuminate when the power switch on (IG), shine a light on the automatic light control sensor to turn the low beam headlights off before operating the headlight dimmer switch. (w/o Light Control Switch OFF Position)

        Tech Tips

        If this step cannot be completed within 20 seconds, turn the power switch off. Then, turn the power switch on (IG) and restart the procedure.

      3. Check that the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display continuously blinks 6 times at 2 Hz.

        Tech Tips


        • If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display does not start blinking after performing step (ii), perform the procedure again.

        • If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display changes from blinking to illuminated, turn the power switch off and then on. If the "Headlight System Malfunction Visit Your Dealer" warning message is displayed 5 seconds or more after the power switch was turned on, the rear height control sensor sub-assembly LH may be malfunctioning.

      4. Turn the power switch off.

        Note

        After synchronizing the vehicle information, initialize the headlight ECU sub-assembly LH.

  2. HEADLIGHT ECU SUB-ASSEMBLY LH INITIALIZATION


    1. Prepare vehicle for initialization


      1. Unload the vehicle, ensuring that the spare tire*1 or puncture repair kit*2, tools and jack are in their original positions.


        • *1: w/ Full size spare tire

          *2: w/ Puncture repair kit

      2. Check that there are no occupants in the vehicle.

      3. Turn the light control switch to the off position.

      4. Stop the vehicle on a level surface and keep the vehicle height unchanged.

    2. Check the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display.


      1. Turn the power switch on (IG), and check the condition of the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display.

      2. Initialization (When using the GTS)


        1. Turn the power switch off.

        2. Connect the GTS to the DLC3.

        3. Turn the power switch on (IG).

        4. Enter the following menus: Body Electrical / HL AutoLeveling / Utility / Height Sensor Initialization.


          Body Electrical > HL AutoLeveling > Utility
        3. Tester Display
        Height Sensor Initialization

  3. Check the display on the GTS and press "Next".

  4. A005N8IE03

    Check the proper "Position ID" by the fuel level according to the table below.

    Tech Tips

    The "Position ID" is determined by the present fuel level as shown below.

    Fuel Level Position ID Number of Times Headlight Leveling Warning Blinks
    Within A range EMPTY 1
    Within B range 1/4 to over EMPTY 2
    Within C range 1/2 to over 1/4 3
    Within D range 3/4 to over 1/2 4
    Within E range FULL to over 3/4 5

  5. Select the proper "Position ID" and press "Next".

  6. Press "Exit".

  7. Check the condition of the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display.

    Tech Tips


    • *: The number of times that "Headlight System Malfunction Visit Your Dealer" warning message blinks is determined by the "Position ID" selected.

    • If initialization does not finish normally, restart the initialization procedure from step (i).

    • If the "Headlight System Malfunction Visit Your Dealer" warning message is displayed on the multi-information display, the headlight ECU sub-assembly LH may be malfunctioning.

  8. Check that initialization finishes normally and turn the power switch off.

  9. Initialization (When not using the GTS)


    1. Turn the power switch on (IG).

    2. A005N8IE04

      Check the specified number of times to turn the low beam headlights on and off.

      Tech Tips

      The number of times the low beam headlights need to be turned on and off is determined by the present fuel level as shown below.

    10. Fuel Level Number of Times to Turn Low Beam Headlights On and Off
    Within A range 1
    Within B range 2
    Within C range 3
    Within D range 4
    Within E range 5

  • Enter initialization mode. (w/ Light Control Switch OFF Position)


    1. Turn the power switch and headlight dimmer switch off.

    2. Cover the automatic light control sensor with a lightproof object.

    3. Perform the following steps within 5 seconds.


      1. Turn the power switch on (IG).

      2. While pulling the headlight dimmer switch, turn it from off to AUTO to off again 3 times or more.

        Tech Tips

        Check that the clearance lights turn from off to on and back off again.

      3. Turn the headlight dimmer switch off.

    Tech Tips


  • Enter initialization mode. (w/o Light Control Switch OFF Position)


    1. Turn the power switch off.

    2. Shine a light on the automatic light control sensor.

    3. Perform the following steps within 5 seconds.


      1. Turn the power switch on (IG).

      2. While pulling the headlight dimmer switch, turn it from AUTO to TAIL to AUTO again 3 times or more.

        Tech Tips

        Check that the clearance lights turn from off to on and back off again.

      3. Turn the headlight dimmer switch AUTO.

    Tech Tips


  • After entering initialization mode, turn the low beam headlights from off to on and back off again N* times.

    Tech Tips


  • Check the condition of the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display.

    Tech Tips


  • Check that initialization finishes normally and turn the power switch off.