LIGHTING SYSTEM, Diagnostic DTC:B2452

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

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
B2452 Value from rear height control sensor is out of the normal range when initializing.

  • Vehicle condition when initializing

  • Headlight leveling ECU assembly

INSPECTION PROCEDURE

Tech Tips

After replacing the headlight leveling ECU, initialization of the ECU is necessary Click here.

PROCEDURE


  1. PERFORM HEADLIGHT LEVELING ECU INITIALIZATION


    1. Perform initialization of the headlight leveling ECU 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

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B2452 output does not occur.

      Tech Tips

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

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

    B

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    C

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    A

    END