AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2452

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

DESCRIPTION

This DTC is output when the sensor value acquired from the rear height control sensor sub-assembly LH is out of range during initialization of the headlight light control ECU sub-assembly LH. For example, when the vehicle is tilted or jacked up.

The headlight light control ECU sub-assembly LH outputs DTC B2452.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2452 Height Control Sensor Data Out of Range When Initializing The vehicle height sensor value is out of range during initialization.

  • Vehicle condition when initializing

  • Rear height control sensor sub-assembly LH

CAUTION / NOTICE / HINT

Note

After the headlight light control ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.

Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


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

    NEXT

  2. CHECK FOR DTC


    1. Turn the power switch on (IG).

    2. Inspect the light using the dimmer switch.

    3. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      Result
      Proceed to
      DTC B2452 output does not occur
      DTC B2452 output occurs

    DTC B2452 output does not occur

    USE SIMULATION METHOD TO CHECK Click here

    DTC B2452 output occurs

  3. CHECK REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH


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

      Result
      Result Proceed to
      Rear height control sensor sub-assembly LH installation condition is normal A
      Rear height control sensor sub-assembly LH installation condition is abnormal B

    A

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH Click here

    B

    INSTALL PARTS CORRECTLY Click here