LIGHTING SYSTEM INITIALIZATION

Note


  • When the conditions shown in the table below are met, it is necessary to perform vehicle information registration or initialization for the headlight leveling ECU assembly.

  • Adjust the headlight aim after initializing the headlight leveling ECU Click here.

Operation Performed Necessary Procedure Proceed to
The headlight leveling ECU assembly is replaced with a new one. Headlight leveling ECU assembly initialization Proceed to step 1 or step 2
The vehicle height changes due to replacement of suspension components or after performing such operations as removal and reinstallation or replacement of the rear height control sensor sub-assembly LH. Headlight leveling ECU assembly initialization Proceed to step 1 or step 2

  1. HEADLIGHT LEVELING ECU ASSEMBLY INITIALIZATION (USING GTS)

    Tech Tips

    Initialization for the headlight leveling ECU assembly is performed based on the fuel level, which is divided into 5 levels, indicated by the needle of the fuel receiver gauge.


    1. Check the vehicle condition.


      1. Put the vehicle in the following condition:


        • Vehicle is unloaded (except spare tire and spare tire tools, etc.).

        • No occupants other than the driver are in the vehicle.

        • Headlights are turned off.

        • Vehicle is stopped and vehicle height remains constant (vehicle is on a level surface and stable).

        Tech Tips

        If the above conditions are not met, initialization cannot be performed normally.

    2. Check the warning indicator in the multi-information display.


      1. Check the warning indicator in the multi-information display 6 seconds after turning the ignition switch from off to ON.

        Standard
        Condition Specified Condition
        Headlight leveling ECU assembly initialization malfunction Warning indicator blinks 6 times at 2 Hz continuously
        Removal/installation or replacement of the rear height control sensor sub-assembly LH, replacement of the suspension, etc. Warning indicator is not illuminated

        Tech Tips

        If the warning indicator condition is not as specified, check the wire harness(es) and connector(s) of the headlight leveling ECU assembly.

    3. Initialization procedure


      1. Connect the GTS to the DLC3 with the ignition switch off.

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      2. Turn the ignition switch to ON.

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

      4. Check what is displayed on the screen of the GTS and press "Next".

      5. The appropriate position ID is determined by the fuel level (remaining amount of fuel) of the fuel receiver gauge as shown in the chart below.

        Fuel Level Position ID Number of Times Warning Indicator Blinks (N)
        Fuel level is within range A. EMPTY 1
        Fuel level is within range B. EMPTY to 1/4 full 2
        Fuel level is within range C. 1/4 to 1/2 full 3
        Fuel level is within range D. 1/2 to 3/4 full 4
        Fuel level is within range E. 3/4 to FULL 5

      6. Input the position ID determined by the chart above into the GTS and press "Next".

      7. Check the warning indicator in the multi-information display.

        Standard
        Condition Specified Condition
        Headlight leveling ECU assembly initialization malfunction Blinks 6 times at 2 Hz → Blinks N* times at 2 Hz continuously (initialization completes normally)
        Removal/installation or replacement of the rear height control sensor sub-assembly LH, replacement of the suspension, etc. Off → Blinks N* times at 2 Hz continuously (initialization completes normally)

        Tech Tips


        • *: Refer to the chart above for N.

        • If the warning indicator condition in the multi-information display does not change, perform the procedure from the beginning once again.

        • If the warning indicator illuminates continuously, there may be a malfunction in the headlight leveling ECU assembly.

      8. Check that initialization has completed normally, and then turn the ignition switch off.

        Tech Tips

        The blinking warning indicator that indicates that initialization has completed normally continues until the ignition switch is turned off.

  2. HEADLIGHT LEVELING ECU ASSEMBLY INITIALIZATION (WITHOUT USING GTS)

    Tech Tips

    Initialization for the headlight leveling ECU assembly is performed based on the fuel level, which is divided into 5 levels, indicated by the needle of the fuel receiver gauge.


    1. Check the vehicle condition.


      1. Put the vehicle in the following condition:


        • Vehicle is unloaded (except spare tire and spare tire tools, etc.).

        • No occupants other than the driver are in the vehicle.

        • Headlights are turned off.

        • Vehicle is stopped and vehicle height remains constant (vehicle is on a level surface and stable).

        Tech Tips

        If the above conditions are not met, initialization cannot be performed normally.

    2. Check the warning indicator in the multi-information display.


      1. Check the warning indicator in the multi-information display 6 seconds after turning the ignition switch from off to ON.

        Standard
        Condition Specified Condition
        Headlight leveling ECU assembly initialization malfunction Warning indicator blinks 6 times at 2 Hz continuously
        Removal/installation or replacement of the rear height control sensor sub-assembly LH, replacement of the suspension, etc. Warning indicator is not illuminated

        Tech Tips

        If the warning indicator condition is not as specified, check the wire harness(es) and connector(s) of the headlight leveling ECU assembly.

    3. Initialization procedure


      1. Turn the ignition switch to ON.

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      2. The number of times the headlight dimmer switch operates is determined by the fuel level (remaining amount of fuel) of the fuel receiver gauge as shown in the chart below.

        Tech Tips

        The number of times the switch is operated is necessary in a later procedure.

        Fuel Level Number of Times Switch is Operated (N)
        Fuel level is within range A. 1
        Fuel level is within range B. 2
        Fuel level is within range C. 3
        Fuel level is within range D. 4
        Fuel level is within range E. 5

      3. Enter initialization mode.


        1. Turn the ignition switch to ON with the headlight dimmer switch off.

        2. Turn the headlight dimmer switch from off to the HEAD position and back off 3 times or more with the headlight dimmer switch in the high-beam flash condition.

        3. Turn the headlight dimmer switch off.

        Tech Tips


        • Perform the above operation within 5 seconds.

        • When initialization mode has been entered, the warning indicator in the multi-information display starts blinking at 1 Hz.

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

        Tech Tips


        • *: The number of times to turn the headlight dimmer switch on and off (N) is determined by the fuel level of the fuel receiver gauge.

        • Turn the headlight dimmer switch on and off within 20 seconds of entering initialization mode.

        • Turn the headlight dimmer switch on and off at intervals of approx. 3 seconds.

      5. Check the warning indicator in the multi-information display 3 seconds after the headlight dimmer switch is operated.

        Standard
        Condition Specified Condition
        Headlight leveling ECU assembly initialization malfunction Blinks 6 times at 2 Hz → Blinks N* times at 2 Hz continuously (initialization completes normally)
        Removal/installation or replacement of the rear height control sensor sub-assembly LH, replacement of the suspension, etc. Off → Blinks N* times at 2 Hz continuously (initialization completes normally)

        Tech Tips


        • *: N is the number of times that the headlight dimmer switch has been operated.

        • If the warning indicator condition in the multi-information display does not change, perform the procedure from the beginning once again after turning the ignition switch off.

        • If the warning indicator illuminates continuously, there may be a malfunction in the headlight leveling ECU assembly.

      6. Check that initialization has completed normally, and then turn the ignition switch off.

        Tech Tips

        The blinking warning indicator that indicates that initialization has completed normally continues until the ignition switch is turned off.