AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2452

DTC Code DTC Name
B2452 Abnormal Height Sensor Data at Initialization

DESCRIPTION

The No. 1 headlight ECU sub-assembly LH stores this DTC if the sensor value received from the rear height control sensor sub-assembly LH is out of range when performing initialization of the No. 1 headlight ECU sub-assembly LH; for example, the vehicle is not level or being jack up.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2452 Abnormal Height Sensor Data at Initialization Rear height control sensor sub-assembly LH value is out of range when initializing

  • Vehicle condition when initializing

  • Rear height control sensor sub-assembly LH

  • No. 1 headlight ECU sub-assembly LH

CAUTION / NOTICE / HINT

Note


  • If the No. 1 headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the No. 1 headlight ECU sub-assembly LH.

    Click here

  • If any of the following are performed, it is necessary to initialize the No. 1 headlight ECU sub-assembly LH.

    Click here


    • Replacement of the rear height control sensor sub-assembly LH

    • Removal/installation of the rear height control sensor sub-assembly LH

    • Work that changes the vehicle height such as replacement of suspension components

PROCEDURE


  1. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.

    5. Clear the DTCs.


      Body Electrical > HL AutoLeveling > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.

    5. Check for DTCs.


      Body Electrical > HL AutoLeveling > Trouble Codes
      OK
      DTC B2452 is not output.

      Tech Tips

      If any DTCs other than B2452 are output, troubleshoot those DTCs first.

      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CHECK REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH


    1. Check the installation condition of the rear height control sensor sub-assembly LH.

      OK
      Rear height control sensor sub-assembly LH is installed correctly.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL PARTS CORRECTLY Click here

    OK

  4. REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH


    1. Replace the rear height control sensor sub-assembly LH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.

    5. Clear the DTCs.


      Body Electrical > HL AutoLeveling > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.

    5. Check for DTCs.


      Body Electrical > HL AutoLeveling > Trouble Codes
      OK
      DTC B2452 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH WAS DEFECTIVE)

    NG

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH Click here