LIGHTING SYSTEM, Diagnostic DTC:B2412, B2413

DTC Code DTC Name
B2412 Headlight Swivel Motor LH Malfunction
B2413 Headlight Swivel Motor RH Malfunction

DESCRIPTION

The swivel motor receives a signal from the headlight swivel ECU to operate and sends a signal indicating the direction of the headlight and condition of the headlight swivel motor to the headlight swivel ECU.

DTC Code DTC Detection Condition Trouble Area
B2412

Either condition is met:


  • A malfunction in the headlight swivel motor LH.

  • An open or short in the headlight swivel motor LH circuit.

  • Headlight assembly LH

  • Harness or connector

  • Headlight swivel ECU assembly
B2413

Either condition is met:


  • A malfunction in the headlight swivel motor RH.

  • An open or short in the headlight swivel motor RH circuit.

  • Headlight assembly RH

  • Harness or connector

  • Headlight swivel ECU assembly

WIRING DIAGRAM

A0053HZE63

CAUTION / NOTICE / HINT

Tech Tips


  • Perform a visual check of the headlight (swivel motor) before replacing it.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SWIVEL MOTOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / AFS / Active Test.

    5. Using the intelligent tester, perform the Active Test.

      AFS
      Tester Display Test Part Control Range Diagnostic Note
      Drive Swivel Motor RH RIGHT Swivel motor RH right direction rotation OFF/RIGHT -
      Drive Swivel Motor RH LEFT Swivel motor RH left direction rotation OFF/LEFT -
      Drive Swivel Motor LH RIGHT Swivel motor LH right direction rotation OFF/RIGHT -
      Drive Swivel Motor LH LEFT Swivel motor LH left direction rotation OFF/LEFT -
      OK
      Swivel motors operate normally.

    NG

    CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU - BATTERY AND BODY GROUND) Click here

    OK

  3. CHECK HEADLIGHT


    1. Temporarily replace the headlight with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.

    OK

    END (HEADLIGHT WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU - BATTERY AND BODY GROUND)

    A00547RE02
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Headlight Swivel ECU)

    1. Disconnect the A38 headlight swivel ECU connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A38-14 (IGS) - Body ground Ignition switch ON 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A38-22 (E1) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU - HEADLIGHT)

    A005830E01
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Headlight Swivel ECU)
    *2 for LH
    *3 for RH
    *4

    Front view of wire harness connector

    (to Headlight)

    1. Disconnect the A38 headlight swivel ECU connector.

    2. Disconnect the A52 or A51 headlight connector.

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      A38-1 (SMBL) - A52-4 (SMBL) Always Below 1 Ω
      A38-29 (SML) - A52-2 (SML)
      A38-23 (SMGL) - A52-3 (SMGL)
      A38-1 (SMBL) - Body ground Always 10 kΩ or higher
      A38-29 (SML) - Body ground
      A38-23 (SMGL) - Body ground
      for RH
      Tester Connection Condition Specified Condition
      A38-2 (SMBR) - A51-4 (SMBR) Always Below 1 Ω
      A38-10 (SMR) - A51-2 (SMR)
      A38-24 (SMGR) - A51-3 (SMGR)
      A38-2 (SMBR) - Body ground Always 10 kΩ or higher
      A38-10 (SMR) - Body ground
      A38-24 (SMGR) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HEADLIGHT


    1. Temporarily replace the headlight with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.

    OK

    END (HEADLIGHT WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here