LIGHTING SYSTEM, Diagnostic DTC:B2412, B2413

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

DESCRIPTION

The headlight 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

When either condition below is met:


  • Malfunction in the headlight swivel motor LH.

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

  • AFS ECU (headlight swivel ECU)

  • Headlight swivel motor LH

  • Harness or connector

  • Headlight unit LH
B2413

When either condition below is met:


  • Malfunction in the headlight swivel motor RH.

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

  • AFS ECU (headlight swivel ECU)

  • Headlight swivel motor RH

  • Harness or connector

  • Headlight unit RH

WIRING DIAGRAM

A01EPSWE04

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 DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.

    NG

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SWIVEL MOTOR) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  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 Swivel motor RH right direction rotation OFF/RIGHT -
      Drive Swivel Motor RH Swivel motor RH left direction rotation OFF/LEFT -
      Drive Swivel Motor LH Swivel motor LH left direction rotation OFF/LEFT -
      Drive Swivel Motor LH Swivel motor LH right direction rotation OFF/RIGHT -
      OK
      Headlight 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 DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU) Click here

    C

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU) Click here

    A

    END (HEADLIGHT SWIVEL MOTOR WAS DEFECTIVE)

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

    A01ERXNE44

    1. Disconnect the E91 ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E91-14 (IGS) - Body ground Engine switch on (IG) 11 to 14 V
      E91-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E91-22 (E1) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01ERKHE14

    1. Disconnect the E91 ECU connector.

    2. Disconnect the A40*1 or A46*2 light 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
      E91-1 (SMBL) - A40-1 (LHB1) Always Below 1 Ω
      E91-29 (SML) - A40-9 (SML)
      E91-23 (SMGL) - A40-4 (LH E)
      E91-1 (SMBL) - Body ground Always 10 kΩ or higher
      E91-29 (SML) - Body ground
      E91-23 (SMGL) - Body ground
      for RH
      Tester Connection Condition Specified Condition
      E91-2 (SMBR) - A46-1 (RHB1) Always Below 1 Ω
      E91-10 (SMR) - A46-9 (SMR)
      E91-24 (SMGR) - A46-4 (RH E)
      E91-2 (SMBR) - Body ground Always 10 kΩ or higher
      E91-10 (SMR) - Body ground
      E91-24 (SMGR) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT HEADLIGHT UNIT


    1. Remove the headlight unit Click here.

      A01EPD2E02

    2. Disconnect the headlight swivel motor connector.

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

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

    NG

    REPLACE HEADLIGHT UNIT 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 DTCs Click here.

      OK
      DTC B2412 or B2413 output does not occur.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU) Click here

    C

    REPLACE AFS ECU (HEADLIGHT SWIVEL ECU) Click here

    A

    END (HEADLIGHT SWIVEL MOTOR WAS DEFECTIVE)