AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM(for Sedan) INITIALIZATION

Note:

  • Make sure to perform vehicle information synchronization after replacing when the headlight leveling ECU assembly with a new one.

  • Make sure to perform initialization after replacing the headlight leveling ECU assembly.

  • Initialize the headlight leveling ECU assembly after the vehicle height has changed due to replacement of suspension components or after performing operations such as removal and reinstallation or replacement of the rear height control sensor sub-assembly.

  • Adjust the headlight aim after initializing the headlight leveling ECU assembly.

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  • When a malfunction is detected in the automatic headlight beam level control system, headlight leveling ECU assembly initialization is impossible. Perform troubleshooting before initialization.

  1. SYNCHRONIZE VEHICLE INFORMATION (for Multi-information Display (Segment LCD Type))

    1. When using the GTS:

      1. Turn the ignition switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the ignition switch to ON, and check that the headlight leveling warning light in the combination meter assembly flashes at 0.5 Hz.

      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 leveling warning light on the combination meter assembly flashes 6 times at 2 Hz.

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

        Note:

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

    2. When not using the GTS:

      1. Turn the ignition switch to ON, and check that the headlight leveling warning light in the combination meter assembly flashes at 0.5 Hz.

      2. Using the light control switch, turn the low beam headlights on and off 8 times within 20 seconds after turning the ignition switch to ON.

        Note:

        Turn the low beam headlights on and off at less than 2-second intervals.

        Tip:

        If this step cannot be completed within 20 seconds, turn the ignition switch off. Then, turn the ignition switch to ON and restart the procedure.

      3. Check that the headlight leveling warning light on the combination meter assembly flashes 6 times at 2 Hz.

      4. Turn the ignition switch off.

        Note:

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

  2. SYNCHRONIZE VEHICLE INFORMATION (for Multi-information Display (Color Type))

    1. When using the GTS:

      1. Turn the ignition switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the ignition switch to ON, and check that "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes at 0.5 Hz.

      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 "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes 6 times at 2 Hz.

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

        Note:

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

    2. When not using the GTS:

      1. Turn the ignition switch to ON, and check that "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes at 0.5 Hz.

      2. Using the light control switch, turn the low beam headlights on and off 8 times within 20 seconds after turning the ignition switch to ON.

        Note:

        Turn the low beam headlights on and off at less than 2-second intervals.

        Tip:

        If this step cannot be completed within 20 seconds, turn the ignition switch off. Then, turn the ignition switch to ON and restart the procedure.

      3. Check that "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes 6 times at 2 Hz.

      4. Turn the ignition switch off.

        Note:

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

  3. HEADLIGHT LEVELING ECU ASSEMBLY INITIALIZATION PROCEDURE (for Multi-information Display (Segment LCD Type))

    1. Prepare the vehicle for initialization.

      1. Unload the vehicle, ensuring that the spare tire, tools and jack are in their original positions.

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

      3. Turn the headlights off.

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

    2. Check the headlight leveling warning light.

      1. Turn the ignition switch to ON, and check the headlight leveling warning light.

        OK

        Condition

        Specified Condition

        The headlight leveling ECU assembly has been replaced with a new one.

        Headlight leveling warning light repeatedly blinks 6 times at 2 Hz.

        Replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. has been performed.

        Headlight leveling warning light comes on for approximately 3 seconds, and then turns off (bulb check function).
        Tip:

        If the warning light does not come on when the ignition switch is turned to ON, perform troubleshooting according to Problem Symptoms Table.

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    3. Perform initialization.

      1. E106867C01

        *a

        DLC3

        Using SST, connect terminals 4 (CG) and 8 (LVL) of the DLC3.

        09843-18040

      2. E348299C01

        *a

        Fuel Receiver Gauge

        Turn the low beam headlights on and off using the light control switch within 20 seconds after connecting the terminals.

        Tip:

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

        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
        Note:

        • Turn the low beam headlights on and off in intervals of less than 3-seconds.

        • Be sure to operate the light control switch from outside the vehicle.

      3. Check the warning light.

        Standard

        Condition

        Specified Condition

        The headlight leveling ECU assembly has been replaced with a new one.

        Blinks 6 times at 2 Hz → Repeatedly blinks N*1 times at 2 Hz.

        Replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. has been performed.

        Off → Repeatedly blinks N*1 times at 2 Hz.
        Tip:

        • *1: The number of times that the warning blinks is determined by the number of times the low beam headlights are turned on and off.

        • If initialization does not finish normally, disconnect SST from the DLC3 and turn the ignition switch off. Then, restart initialization from step 1.

      4. Check that initialization has finished normally and turn the ignition switch off.

  4. HEADLIGHT LEVELING ECU ASSEMBLY INITIALIZATION (for Multi-information Display (Color Type))

    1. Prepare the vehicle for initialization.

      1. Unload the vehicle, ensuring that the spare tire, tools and jack are in their original positions.

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

      3. Turn the headlights off.

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

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

      1. Turn the ignition switch to ON, and check the warning message.

        OK

        Condition

        Specified Condition

        The headlight leveling ECU assembly has been replaced with a new one.

        "Headlight System Malfunction Visit Your Dealer" repeatedly blinks 6 times at 2 Hz on the multi-information display.

        Replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. has been performed.

        "Headlight System Malfunction Visit Your Dealer" is not displayed on the multi-information display.

    3. Perform initialization.

      1. E106867C01

        *a

        DLC3

        Using SST, connect terminals 4 (CG) and 8 (LVL) of the DLC3.

        09843-18040

      2. E348300C01

        *a

        Fuel Receiver Gauge

        Turn the low beam headlights on and off using the light control switch within 20 seconds after connecting the terminals.

        Tip:

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

        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
        Note:

        • Turn the low beam headlights on and off in intervals of less than 3-seconds.

        • Be sure to operate the light control switch from outside the vehicle.

      3. Check the display of "Headlight System Malfunction Visit Your Dealer" on the multi-information display.

        Standard

        Condition

        Specified Condition

        The headlight leveling ECU assembly has been replaced with a new one.

        Blinks 6 times at 2 Hz → Repeatedly blinks N* times at 2 Hz.

        Replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. has been performed.

        Off → Repeatedly blinks N* times at 2 Hz.
        Tip:

        • *: The number of times that "Headlight System Malfunction Visit Your Dealer" blinks on the multi-information display is determined by the number of times the low beam headlights are turned on and off.

        • If initialization does not finish normally, disconnect SST from the DLC3 and turn the ignition switch off. Then, restart initialization from step (i).

      4. Check that initialization has finished normally and turn the ignition switch off.