LIGHTING SYSTEM, Diagnostic DTC:B2452

DTC Code DTC Name
B2452 Height Control Sensor Data Out of Range When Initializing

DESCRIPTION

The headlight swivel ECU assembly*1 or headlight leveling ECU assembly*2 stores this DTC if the sensor value received from the rear height control sensor is out of range when performing initialization of the headlight swivel ECU assembly*1 or headlight leveling ECU assembly*2; for example, the vehicle is not level or is being jacked up.


DTC Code DTC Detection Condition Trouble Area
B2452 The sensor value received from the rear height control sensor is out of range when performing initialization.

  • Vehicle condition when initializing

  • Headlight swivel ECU assembly (w/ AFS)

  • Headlight leveling ECU assembly (w/o AFS)

CAUTION / NOTICE / HINT

Tech Tips

After replacing the headlight swivel ECU assembly*1 or headlight leveling ECU assembly*2, initialization of the ECU is necessary Click here.


  • *1: w/ AFS

  • *2: w/o AFS

PROCEDURE


  1. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      w/ AFS A
      w/o AFS B

    B

    PERFORM HEADLIGHT LEVELING ECU ASSEMBLY Click here

    A

  2. PERFORM HEADLIGHT SWIVEL ECU ASSEMBLY INITIALIZATION


    1. Perform initialization of the headlight swivel ECU assembly Click here.

      Tech Tips


      • Before initializing, make sure that the vehicle condition is proper for initialization.

      • Be sure to perform the initialization as instructed.


    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2452 output does not occur.

      Tech Tips

      If the headlight swivel ECU assembly outputs DTC B2452 even though the ECU has been initialized as instructed, there may be a malfunction in the headlight swivel ECU assembly.


    OK

    END

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

  4. PERFORM HEADLIGHT LEVELING ECU ASSEMBLY


    1. Perform initialization of the headlight leveling ECU assembly Click here.

      Tech Tips


      • Before initializing, make sure that the vehicle condition is proper for initialization.

      • Be sure to perform the initialization as instructed.


    NEXT

  5. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2452 output does not occur.

      Tech Tips

      If the headlight leveling ECU assembly outputs DTC B2452 even though the ECU has been initialized as instructed, there may be a malfunction in the headlight leveling ECU assembly.

      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END

    B

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    C

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here