LIGHTING SYSTEM, Diagnostic DTC:B2412, B2413

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

DESCRIPTION

Each 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
  • Malfunction in the headlight swivel motor LH.

  • Open or short in the headlight swivel motor LH circuit.


  • Headlight unit LH (swivel motor)

  • Headlight swivel ECU assembly

  • Harness or connector

B2413
  • Malfunction in the headlight swivel motor RH.

  • Open or short in the headlight swivel motor RH circuit.


  • Headlight unit RH (swivel motor)

  • Headlight swivel ECU assembly

  • Harness or connector

WIRING DIAGRAM

A0099URE41

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.

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


    1. Using the intelligent tester, perform the Active Test Click here.

      AFS
      Tester Display Test Part Control Range Diagnostic Note
      Drive Swivel Motor RH RIGHT* Swivel motor RH right direction rotation ON/OFF

      ON: Move right

      OFF: Stop

      Drive Swivel Motor RH LEFT* Swivel motor RH left direction rotation ON/OFF

      ON: Move left

      OFF: Stop

      Drive Swivel Motor LH RIGHT* Swivel motor LH right direction rotation ON/OFF

      ON: Move right

      OFF: Stop

      Drive Swivel Motor LH LEFT* Swivel motor LH left direction rotation ON/OFF

      ON: Move left

      OFF: Stop


      • *: Perform the Active Test with the engine running and the vehicle stopped.

      OK
      Swivel motors operate normally.

    NG
    OK
  3. CHECK HEADLIGHT UNIT (OPERATION)


    1. Temporarily replace the headlight unit (swivel motor) with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.

    NG
    OK
  4. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - BATTERY)


    1. A009ALYE27
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Swivel ECU Assembly)

      Disconnect the A58 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
      A58-14 (IGS) - Body ground Ignition switch ON 11 to 14 V

    NG
    OK
  5. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - BODY GROUND)


    1. A009ALYE26
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Swivel ECU Assembly)

      Disconnect the A58 headlight swivel ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (E1) - Body ground Always Below 1 Ω

    NG
    OK
  6. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - HEADLIGHT UNIT)


    1. Disconnect the A58 headlight swivel ECU connector.

    2. Disconnect the A62*1 or A63*2 headlight connector.


      • *1: for LH

      • *2: for RH

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      A58-1 (SMBL) - A62-1 (SMBL) Always Below 1 Ω
      A58-29 (SML) - A62-2 (SML) Always Below 1 Ω
      A58-23 (SMGL) - A62-3 (SMGL) Always Below 1 Ω
      A58-1 (SMBL) - Body ground Always 10 kΩ or higher
      A58-29 (SML) - Body ground Always 10 kΩ or higher
      A58-23 (SMGL) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      A58-2 (SMBR) - A63-1 (SMBR) Always Below 1 Ω
      A58-10 (SMR) - A63-2 (SMR) Always Below 1 Ω
      A58-24 (SMGR) - A63-3 (SMGR) Always Below 1 Ω
      A58-2 (SMBR) - Body ground Always 10 kΩ or higher
      A58-10 (SMR) - Body ground Always 10 kΩ or higher
      A58-24 (SMGR) - Body ground Always 10 kΩ or higher

    NG
    OK
  7. CHECK HEADLIGHT UNIT (OPERATION)


    1. Temporarily replace the headlight unit (swivel motor) with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.

    NG
    OK