AFS (ADAPTIVE FRONT-LIGHTING SYSTEM), Diagnostic DTC:B2412, B2413

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

DESCRIPTION

Each headlight swivel motor receives operation signals from the headlight ECU sub-assembly and sends signals indicating the direction of the headlight and condition of the headlight swivel motor to the headlight ECU sub-assembly.

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 ECU sub-assembly LH

  • Headlight unit assembly LH

  • Headlight swivel motor LH

  • Harness or connector
B2413

  • Malfunction in the headlight swivel motor RH.

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

  • Headlight ECU sub-assembly RH

  • Headlight unit assembly RH

  • Headlight swivel motor RH

  • Harness or connector

WIRING DIAGRAM

B002BNUE04

CAUTION / NOTICE / HINT

Note


  • After replacing the headlight ECU sub-assembly LH, perform initialization and registration of vehicle information Click here.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

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

    A

    USE SIMULATION METHOD TO CHECK Click here

    C

    PERFORM ACTIVE TEST USING GTS (DRIVE THE LEVELING MOTOR) Click here

    B

  3. PERFORM ACTIVE TEST USING GTS (DRIVE THE LEVELING MOTOR)


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

      AFS
      Tester Display Test Part Control Range Diagnostic Note
      Drive The Leveling Motor Headlight swivel motor (leveling function) upward or downward operation Stop/Down/Up Perform the Active Test with the power switch on (READY) and vehicle stopped
      OK
      Headlight swivel motor operate normally.

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

  4. INSPECT HEADLIGHT UNIT LH


    1. B002B88E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Swivel Motor LH)
      *b

      Front view of wire harness connector

      (to Headlight ECU Sub-assembly LH)

      Remove the headlight unit LH Click here.

    2. Remove the headlight unit assembly LH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C-4 - O-2 Always Below 1 Ω
      C-13 - O-4 Always Below 1 Ω
      B-7 - O-1 Always Below 1 Ω
      B-17 - O-3 Always Below 1 Ω

    NG

    REPLACE HEADLIGHT UNIT LH Click here

    OK

  5. CHECK HEADLIGHT SWIVEL MOTOR LH


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

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2412 output does not occur.

    OK

    END (HEADLIGHT SWIVEL MOTOR LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

  6. PERFORM ACTIVE TEST USING GTS (DRIVE THE LEVELING MOTOR)


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

      AFS
      Tester Display Test Part Control Range Diagnostic Note
      Drive The Leveling Motor Headlight swivel motor (leveling function) upward or downward operation Stop/Down/Up Perform the Active Test with the power switch on (READY) and vehicle stopped
      OK
      Headlight swivel motor operate normally.

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    NG

  7. INSPECT HEADLIGHT UNIT RH


    1. B002B88E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Swivel Motor RH)
      *b

      Front view of wire harness connector

      (to Headlight ECU Sub-assembly RH)

      Remove the headlight unit RH Click here.

    2. Remove the headlight unit assembly RH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C-4 - O-2 Always Below 1 Ω
      C-13 - O-4 Always Below 1 Ω
      B-7 - O-1 Always Below 1 Ω
      B-17 - O-3 Always Below 1 Ω

    NG

    REPLACE HEADLIGHT UNIT RH Click here

    OK

  8. CHECK HEADLIGHT SWIVEL MOTOR RH


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

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2413 output does not occur.

    OK

    END (HEADLIGHT SWIVEL MOTOR RH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here