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 AFS ECU (headlight swivel ECU assembly) to operate and sends a signal indicating the direction of the headlight and condition of the headlight swivel motor to the AFS ECU (headlight swivel ECU assembly).

DTC No. DTC Detection Condition Trouble Area
B2412

  • Malfunction in headlight swivel motor LH

  • Open or short in headlight swivel motor LH circuit

  • Headlight swivel motor LH

  • Harness or connector

  • AFS ECU (headlight swivel ECU assembly)
B2413

  • Malfunction in headlight swivel motor RH

  • Open or short in headlight swivel motor RH circuit

  • Headlight swivel motor RH

  • Harness or connector

  • AFS ECU (headlight swivel ECU assembly)

WIRING DIAGRAM

A01NH1DE08

INSPECTION PROCEDURE

Note

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 the DTCs Click here.

      OK
      DTC B2412 or B2413 is not output.

    NG

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (READY).

    3. Turn the intelligent tester on.

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

    5. Check that the swivel motors operate.

      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
      OK
      Swivel motors operate normally.

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY - AFS ECU) Click here

    OK

  3. REPLACE HEADLIGHT SWIVEL MOTOR (HEADLIGHT REFLECTOR)


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

    2. Check for DTCs Click here.

      OK
      DTC B2412 or B2413 is not output.

    NG

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Click here

    OK

    END

  4. CHECK HARNESS AND CONNECTOR (BATTERY - AFS ECU)


    1. A01NH9TE12
      Text in Illustration
      *1

      Front view of wire harness connector

      (to AFS ECU (Headlight Swivel ECU Assembly))

      Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A53-14 (IGS) - Body ground Power switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (AFS ECU - BODY GROUND)


    1. A01NH9TE13
      Text in Illustration
      *1

      Front view of wire harness connector

      (to AFS ECU (Headlight Swivel ECU Assembly))

      Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A53-22 (E1) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (AFS ECU - HEADLIGHT ASSEMBLY)


    1. for HID Headlight


      1. A01NFC9E03
        Text in Illustration
        *1

        Front view of wire harness connector

        (to AFS ECU (Headlight Swivel ECU Assembly))
        *2

        Front view of wire harness connector

        (to Headlight Assembly LH)
        *3

        Front view of wire harness connector

        (to Headlight Assembly RH)

        Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.

      2. Disconnect the A18 or A26 headlight assembly connector.

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

        Standard Resistance
        LH Side (B2410)
        Tester Connection Condition Specified Condition
        A53-1 (SMBL) - A18-8 (SMBL) Always Below 1 Ω
        A53-29 (SML) - A18-6 (SML) Always Below 1 Ω
        A53-23 (SMGL) - A18-7 (SMGL) Always Below 1 Ω
        A53-1 (SMBL) - Body ground Always 10 kΩ or higher
        A53-29 (SML) - Body ground Always 10 kΩ or higher
        A53-23 (SMGL) - Body ground Always 10 kΩ or higher
        RH Side (B2411)
        Tester Connection Condition Specified Condition
        A53-2 (SMBR) - A26-8 (SMBR) Always Below 1 Ω
        A53-10 (SMR) - A26-6 (SMR) Always Below 1 Ω
        A53-24 (SMGR) - A26-7 (SMGR) Always Below 1 Ω
        A53-2 (SMBR) - Body ground Always 10 kΩ or higher
        A53-10 (SMR) - Body ground Always 10 kΩ or higher
        A53-24 (SMGR) - Body ground Always 10 kΩ or higher

    2. for LED Headlight


      1. A01NFC9E04
        Text in Illustration
        *1

        Front view of wire harness connector

        (to AFS ECU (Headlight Swivel ECU Assembly))
        *2

        Front view of wire harness connector

        (to Headlight Assembly LH)
        *3

        Front view of wire harness connector

        (to Headlight Assembly RH)

        Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.

      2. Disconnect the A85 or A86 headlight assembly connector.

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

        Standard Resistance
        LH Side (B2410)
        Tester Connection Condition Specified Condition
        A53-1 (SMBL) - A85-8 (SMBL) Always Below 1 Ω
        A53-29 (SML) - A85-6 (SML) Always Below 1 Ω
        A53-23 (SMGL) - A85-7 (SMGL) Always Below 1 Ω
        A53-1 (SMBL) - Body ground Always 10 kΩ or higher
        A53-29 (SML) - Body ground Always 10 kΩ or higher
        A53-23 (SMGL) - Body ground Always 10 kΩ or higher
        RH Side (B2411)
        Tester Connection Condition Specified Condition
        A53-2 (SMBR) - A86-8 (SMBR) Always Below 1 Ω
        A53-10 (SMR) - A86-6 (SMR) Always Below 1 Ω
        A53-24 (SMGR) - A86-7 (SMGR) Always Below 1 Ω
        A53-2 (SMBR) - Body ground Always 10 kΩ or higher
        A53-10 (SMR) - Body ground Always 10 kΩ or higher
        A53-24 (SMGR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)


    1. A01NESHE04
      Text in Illustration
      *1

      Component with harness connected

      (AFS ECU (Headlight Swivel ECU Assembly))

      Reconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.

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

      Standard Voltage
      LH Side (B2412)
      Tester Connection Condition Specified Condition
      A53-1 (SMBL) - A53-23 (SMGL) Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      RH Side (B2413)
      Tester Connection Condition Specified Condition
      A53-2 (SMBR) - A53-24 (SMGR) Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V

    NG

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Click here

    OK

  8. INSPECT HEADLIGHT UNIT


    1. for HID Headlight


      1. A01NE7IE02
        Text in Illustration
        *1

        Component without harness connected

        (Headlight Unit LH)
        *2

        Component without harness connected

        (Headlight Unit RH)
        *3

        Front view of wire harness connector

        (to Headlight Swivel Motor LH or RH)

        Remove the headlight unit Click here.

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

        Standard Resistance
        LH Side (B2410)
        Tester Connection Condition Specified Condition
        A18-8 (SMBL) - 3 (IG) Always Below 1 Ω
        A18-6 (SML) - 2 (LIN) Always Below 1 Ω
        A18-7 (SMGL) - 1 (GND) Always Below 1 Ω
        A18-8 (SMBL) - Body ground Always 10 kΩ or higher
        A18-6 (SML) - Body ground Always 10 kΩ or higher
        A18-7 (SMGL) - Body ground Always 10 kΩ or higher
        RH Side (B2411)
        Tester Connection Condition Specified Condition
        A26-8 (SMBR) - 3 (IG) Always Below 1 Ω
        A26-6 (SMR) - 2 (LIN) Always Below 1 Ω
        A26-7 (SMGR) - 1 (GND) Always Below 1 Ω
        A26-8 (SMBR) - Body ground Always 10 kΩ or higher
        A26-6 (SMR) - Body ground Always 10 kΩ or higher
        A26-7 (SMGR) - Body ground Always 10 kΩ or higher

    2. for LED Headlight


      1. A01NE7IE03
        Text in Illustration
        *1

        Component without harness connected

        (Headlight Unit LH)
        *2

        Component without harness connected

        (Headlight Unit RH)
        *3

        Front view of wire harness connector

        (to Headlight Swivel Motor LH or RH)

        Remove the headlight unit Click here.

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

        Standard Resistance
        LH Side (B2410)
        Tester Connection Condition Specified Condition
        A85-8 (SMBL) - 3 (IG) Always Below 1 Ω
        A85-6 (SML) - 2 (LIN) Always Below 1 Ω
        A85-7 (SMGL) - 1 (GND) Always Below 1 Ω
        A85-8 (SMBL) - Body ground Always 10 kΩ or higher
        A85-6 (SML) - Body ground Always 10 kΩ or higher
        A85-7 (SMGL) - Body ground Always 10 kΩ or higher
        RH Side (B2411)
        Tester Connection Condition Specified Condition
        A86-8 (SMBR) - 3 (IG) Always Below 1 Ω
        A86-6 (SMR) - 2 (LIN) Always Below 1 Ω
        A86-7 (SMGR) - 1 (GND) Always Below 1 Ω
        A86-8 (SMBR) - Body ground Always 10 kΩ or higher
        A86-6 (SMR) - Body ground Always 10 kΩ or higher
        A86-7 (SMGR) - Body ground Always 10 kΩ or higher
        Result
        Result Proceed to
        OK A
        NG (for HID Headlight) B
        NG (for LED Headlight) C

    B

    REPLACE HEADLIGHT UNIT (for HID Headlight) Click here

    C

    REPLACE HEADLIGHT UNIT (for LED Headlight) Click here

    A

  9. REPLACE HEADLIGHT SWIVEL MOTOR (HEADLIGHT REFLECTOR)


    1. Temporarily replace the headlight swivel motor (headlight reflector) with a new or normally functioning one Click here for HID Headlight, Click here for LED Headlight).

    2. Check for DTCs Click here.

      OK
      DTC B2412 or B2413 is not output.

    NG

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Click here

    OK

    END