AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2416, B241A

DTC Code DTC Name
B2416 Height Control Sensor Malfunction
B241A Rear Height Control Sensor

DESCRIPTION

This DTC is stored when the headlight ECU sub-assembly LH detects a malfunction in the rear height control sensor sub-assembly RH power source circuit or rear height control sensor sub-assembly RH circuit. The headlight ECU sub-assembly LH stores DTC B2416 and/or B241A.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2416 Height Control Sensor Malfunction

  • Malfunction in rear height control sensor sub-assembly RH

  • Open or short in rear height control sensor sub-assembly RH power source circuit

  • Rear height control sensor sub-assembly RH

  • Headlight ECU sub-assembly LH

  • Harness or connector

 -
B241A Rear Height Control Sensor

  • Malfunction in rear height control sensor sub-assembly RH

  • Open or short in rear height control sensor sub-assembly RH circuit

  • Rear height control sensor sub-assembly RH

  • Headlight ECU sub-assembly LH

  • Harness or connector

 -

WIRING DIAGRAM

B005OBKE52
*a Rear Height Control Sensor Sub-assembly RH
*b Headlight ECU Sub-assembly LH

CAUTION / NOTICE / HINT

Note


  • Before performing this inspection, check that the rear height control sensor sub-assembly RH is installed correctly.

  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

    Click here

  • If any of the following are performed, it is necessary to initialize the headlight ECU sub-assembly LH.

    Click here


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

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

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

PROCEDURE


  1. CLEAR DTC


    1. for Single Beam Headlight:


      1. Clear the DTCs.

        Click here


        Body Electrical > HL AutoLeveling > Clear DTCs

    2. for Triple Beam Headlight:


      1. Clear the DTCs.

        Click here


        Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Turn the engine switch on (IG).

    2. for Single Beam Headlight:


      1. Check for DTCs.

        Click here


        Body Electrical > HL AutoLeveling > Trouble Codes
        OK
        DTC B2416 or B241A are not output.

    3. for Triple Beam Headlight:


      1. Check for DTCs.

        Click here


        Body Electrical > AFS > Trouble Codes
        OK
        DTC B2416 or B241A are not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. READ VALUE USING GTS


    1. for Single Beam Headlight:


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / HL AutoLeveling / Data List.

      5. Read the Data List according to the display on the GTS.


        Body Electrical > HL AutoLeveling > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Height Sens Pw Supply Val Rear height control sensor sub-assembly RH power supply value 0 to 5.00 V 4.61 to 5.00 V -
        Rr Height Sens Signal Val Rear height control sensor sub-assembly RH signal value 0 to 5.00 V 0.50 to 4.50 V Value changes according to vehicle height

        Body Electrical > HL AutoLeveling > Data List
        Tester Display
        Height Sens Pw Supply Val
        Rr Height Sens Signal Val
        OK
        Normal condition listed above is displayed.

    2. for Triple Beam Headlight:


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / AFS / Data List.

      5. Read the Data List according to the display on the GTS.


        Body Electrical > AFS > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Height Sens Pw Supply Val Rear height control sensor sub-assembly RH power supply value 0 to 5.00 V 4.61 to 5.00 V -
        Rr Height Sens Signal Val Rear height control sensor sub-assembly RH signal value 0 to 5.00 V 0.50 to 4.50 V Value changes according to vehicle height

        Body Electrical > AFS > Data List
        Tester Display
        Height Sens Pw Supply Val
        Rr Height Sens Signal Val
        OK
        Normal condition listed above is displayed.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH)


    1. Disconnect the A49 headlight ECU sub-assembly LH connector.

    2. Disconnect the T3 rear height control sensor sub-assembly RH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A49-16 (SBR) - T3-3 (SHB) Always Below 1 Ω
      A49-17 (SHRL) - T3-2 (SHRR) Always Below 1 Ω
      A49-15 (SGR) - T3-1 (SHG) Always Below 1 Ω
      A49-16 (SBR) or T3-3 (SHB) - Body ground Always 10 kΩ or higher
      A49-17 (SHRL) or T3-2 (SHRR) - Body ground Always 10 kΩ or higher
      A49-15 (SGR) or T3-1 (SHG) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH


    1. Remove the rear height control sensor sub-assembly RH.

      Click here

    2. Inspect the rear height control sensor sub-assembly RH.

      Click here

      OK
      Rear height control sensor sub-assembly RH is normal.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH Click here