AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM(for Triple Beam Headlight), 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 LH power source circuit or rear height control sensor sub-assembly LH circuit.

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

  • Malfunction in rear height control sensor sub-assembly LH

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

  • Rear height control sensor sub-assembly LH

  • Headlight ECU sub-assembly LH

  • Harness or connector
B241A Rear Height Control Sensor

  • Malfunction in rear height control sensor sub-assembly LH

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

  • Rear height control sensor sub-assembly LH

  • Headlight ECU sub-assembly LH

  • Harness or connector

WIRING DIAGRAM

B004F4WE49
*a OUT
*b Rear Height Control Sensor Sub-assembly LH
*c Headlight ECU Sub-assembly LH

CAUTION / NOTICE / HINT

Note


  • Before performing this inspection, check that the rear height control sensor sub-assembly LH 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 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. Clear the DTCs.

      Click here


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

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > 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. 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 / 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 Height control sensor power supply value 0.00 to 5.00 V 4.61 to 5.00 V -
      Rr Height Sens Signal Val Rear height control sensor signal value 0.00 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.
      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 LH)


    1. Disconnect the A36 headlight ECU sub-assembly LH connector.

    2. Disconnect the k1 rear height control sensor sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A36-16 (SBR) - k1-3 (VCC) Always Below 1 Ω
      A36-17 (SHRL) - k1-2 (OUT) Always Below 1 Ω
      A36-15 (SGR) - k1-1 (GND) Always Below 1 Ω
      A36-16 (SBR) or k1-3 (VCC) - Body ground Always 10 kΩ or higher
      A36-17 (SHRL) or k1-2 (OUT) - Body ground Always 10 kΩ or higher
      A36-15 (SGR) or k1-1 (GND) - 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 LH


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

      Click here

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

      Click here

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

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH Click here