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 actuator receives a signal from the AFS ECU to operate and sends a signal regarding the direction of the headlight and condition of the headlight swivel motor to the AFS ECU.

DTC No. DTC Detection Condition Trouble Area
B2412

  • Malfunction in headlight swivel actuator LH

  • Open or short in headlight swivel actuator LH circuit

  • Open or short in headlight swivel actuator position sensor LH

  • Headlight swivel motor LH (Headlight assembly LH)

  • Wire harness or connector

  • AFS ECU
B2413

  • Malfunction in headlight swivel actuator RH

  • Open or short in headlight swivel actuator RH circuit

  • Open or short in headlight swivel actuator position sensor RH

  • Headlight swivel motor RH (Headlight assembly RH)

  • Wire harness or connector

  • AFS ECU

WIRING DIAGRAM

A015YUUE01

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Check the operation.

      AFS (AFS ECU)
      Tester Display Test Part Control Range Diagnostic Note
      Drive The Swivel Motor RH Swivel motor RH right direction rotation RIGHT/OFF -
      Drive The Swivel Motor LH Swivel motor LH left direction rotation LEFT/OFF -
      OK
      Swivel motor operates.
      Result
      Result Proceed to
      OK (When checking from Problem Symptoms Table) A
      OK (When checking from Diagnostic Trouble Code Chart) B
      NG C

    B

    REPLACE AFS ECU Click here

    C

    INSPECT HEADLIGHT ASSEMBLY Click here

    A

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. INSPECT HEADLIGHT ASSEMBLY

    A0161SGE07

    1. Disconnect the B12 and B2 headlight assembly connectors.

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

      Standard Resistance
      LH Side (B2412)
      Tester Connection Condition Specified Condition
      B12-23 (BL1-) - B12-24 (BL1+) Always 6 to 8 Ω
      B12-21 (BL2-) - B12-22 (BL2+) Always 6 to 8 Ω
      RH Side (B2413)
      Tester Connection Condition Specified Condition
      B2-23 (BR1-) - B2-24 (BR1+) Always 6 to 8 Ω
      B2-21 (BR2-) - B2-22 (BR2+) Always 6 to 8 Ω

      Tech Tips

      Measure the resistance after the headlight has cooled.


    NG

    REPLACE HEADLIGHT ASSEMBLY Click here

    OK

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

    A0161Y7E03

    1. Disconnect the A28 AFS ECU connector.

    2. Disconnect the B12 and B2 headlight connectors.

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

      Standard Resistance
      LH Side (B2412)
      Tester Connection Condition Specified Condition
      A28-25 (BL1+) - B12-24 (BL1+) Always Below 1 Ω
      A28-26 (BL1-) - B12-23 (BL1-) Always Below 1 Ω
      A28-27 (BL2+)- B12-22 (BL2+) Always Below 1 Ω
      A28-28 (BL2-) - B12-21 (BL2-) Always Below 1 Ω
      A28-19 (SMGL) - B12-19 (SMGL) Always Below 1 Ω
      A28-24 (SML) - B12-18 (SML) Always Below 1 Ω
      A28-22 (SMBL) - B12-20 (SMBL) Always Below 1 Ω
      A28-25 (BL1+) - Body ground Always 10 kΩ or higher
      A28-26 (BL1-) - Body ground Always 10 kΩ or higher
      A28-27 (BL2+) - Body ground Always 10 kΩ or higher
      A28-28 (BL2-) - Body ground Always 10 kΩ or higher
      A28-19 (SMGL) - Body ground Always 10 kΩ or higher
      A28-24 (SML) - Body ground Always 10 kΩ or higher
      A28-22 (SMBL) - Body ground Always 10 kΩ or higher
      RH Side (B2413)
      Tester Connection Condition Specified Condition
      A28-9 (BR1+) - B2-24 (BR1+) Always Below 1 Ω
      A28-10 (BR1-) - B2-23 (BR1-) Always Below 1 Ω
      A28-11 (BR2+) - B2-22 (BR2+) Always Below 1 Ω
      A28-12 (BR2-) - B2-21 (BR2-) Always Below 1 Ω
      A28-18 (SMGR) - B2-19 (SMGR) Always Below 1 Ω
      A28-21 (SMBR) - B2-20 (SMBR) Always Below 1 Ω
      A28-23 (SMR) - B2-18 (SMR) Always Below 1 Ω
      A28-9 (BR1+) - Body ground Always 10 kΩ or higher
      A28-10 (BR1-) - Body ground Always 10 kΩ or higher
      A28-11 (BR2+) - Body ground Always 10 kΩ or higher
      A28-12 (BR2-) - Body ground Always 10 kΩ or higher
      A28-18 (SMGR) - Body ground Always 10 kΩ or higher
      A28-21 (SMBR) - Body ground Always 10 kΩ or higher
      A28-23 (SMR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK AFS ECU

    A01609HE08

    1. Disconnect the B12 and B2 headlight connectors.

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

      Standard Voltage
      LH Side (B2412)
      Tester Connection Condition Specified Condition
      B12-20 (SMBL) - B12-19 (SMGL) Engine switch off Below 1 V
      Engine switch on (IG) 4.5 to 5.5 V
      RH Side (B2413)
      Tester Connection Condition Specified Condition
      B2-20 (SMBR) - B2-19 (SMGR) Engine switch off Below 1 V
      Engine switch on (IG) 4.5 to 5.5 V

    NG

    REPLACE AFS ECU Click here

    OK

  5. REPLACE HEADLIGHT ASSEMBLY


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

    2. Check that the headlight assembly operates.

      OK
      Returns to normal operation.

    NG

    REPLACE AFS ECU Click here

    OK

    END