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

DTC Code DTC Detection Condition Trouble Area
B2412

  • Malfunction in headlight swivel motor LH

  • Open or short in headlight swivel motor LH circuit

  • Headlight assembly LH

  • Headlight swivel motor LH

  • Harness or connector

  • AFS ECU
B2413

  • Malfunction in headlight swivel motor RH

  • Open or short in headlight swivel motor RH circuit

  • Headlight assembly RH

  • Headlight swivel motor RH

  • Harness or connector

  • AFS ECU

WIRING DIAGRAM

A000Y4HE05

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTC 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 GTS (HEADLIGHT SWIVEL MOTOR)


    1. Using the GTS, perform the Active Test Click here.

      AFS*1 or AHS*2
      Tester Display Test Part Control Range
      Drive Swivel Motor LH Swivel motor LH direction rotation Left - Right - Stop
      Drive Swivel Motor RH Swivel motor RH direction rotation Left - Right - Stop

      • *1: w/o Adaptive High Beam System

      • *2: w/ Adaptive High Beam System

      OK
      Swivel motors operate normally

    NG

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

    OK

  3. CHECK HEADLIGHT SWIVEL MOTOR


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

    2. Check for DTC Click here.

      OK
      DTC B2412 or B2413 output does not occur

    OK

    END (HEADLIGHT SWIVEL MOTOR WAS DEFECTIVE)

    NG

    REPLACE AFS ECU Click here

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

    A000XTEE01
    *1 Front view of wire harness connector: (to AFS ECU)

    1. Disconnect the A37 AFS ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A37-14 (IGS) - Body ground Power switch on (IG) 11 to 14 V
      A37-15 (IG) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A37-22 (E1) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A000XMFE01

    1. Disconnect the A37 AFS ECU connector.

    2. Disconnect the B1*1 or B11*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
      A37-1 (SMBL) - B1-13 (LHB1) Always Below 1 Ω
      A37-29 (SML) - B1-23 (SML) Always Below 1 Ω
      A37-27 (LH-) - B1-22 (LH E) Always Below 1 Ω
      A37-1 (SMBL) - Body ground Always 10 kΩ or higher
      A37-29 (SML) - Body ground Always 10 kΩ or higher
      A37-27 (LH-) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      A37-2 (SMBR) - B11-13 (RHB1) Always Below 1 Ω
      A37-10 (SMR) - B11-23 (SMR) Always Below 1 Ω
      A37-28 (RH-) - B11-22 (RH E) Always Below 1 Ω
      A37-2 (SMBR) - Body ground Always 10 kΩ or higher
      A37-10 (SMR) - Body ground Always 10 kΩ or higher
      A37-28 (RH-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT HEADLIGHT ASSEMBLY

    A000TQNE01

    1. Remove the headlight Click here.

    2. Disconnect the headlight swivel motor connector Click here.

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      13 (LHB1) - 1 Always Below 1 Ω
      23 (SML) - 2 Always Below 1 Ω
      22 (LH E) - 3 Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      13 (RHB1) - 1 Always Below 1 Ω
      23 (SMR) - 2 Always Below 1 Ω
      22 (RH E) - 3 Always Below 1 Ω

    NG

    REPLACE HEADLIGHT ASSEMBLY Click here

    OK

  7. CHECK HEADLIGHT SWIVEL MOTOR


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

    2. Check for DTC Click here.

      OK
      DTC B2412 or B2413 output does not occur

    OK

    END (HEADLIGHT SWIVEL MOTOR WAS DEFECTIVE)

    NG

    REPLACE AFS ECU Click here