AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2417, B2418

DTC Code DTC Name
B2417 Headlight Beam Level Control Motor LH Malfunction
B2418 Headlight Beam Level Control Motor RH Malfunction

DESCRIPTION

The headlight unit (headlight leveling motor) receives a signal from the headlight ECU sub-assembly to operate. The headlight ECU sub-assembly receives a signal indicating the operating conditions of the headlight unit (headlight leveling motor).

DTC No. DTC Detection Condition Trouble Area
B2417 Malfunction in headlight leveling motor LH

  • Headlight ECU sub-assembly LH

  • Headlight unit LH

  • Headlight leveling motor LH
B2418 Malfunction in headlight leveling motor RH

  • Headlight ECU sub-assembly RH

  • Headlight unit RH

  • Headlight leveling motor RH

WIRING DIAGRAM


  1. for Triple Beam Headlight

    B002C09E09
    *a Headlight Leveling Motor
    *b Headlight Unit
    *c Headlight ECU Sub-assembly

  2. for Single Beam Headlight

    B002C09E10
    *a Headlight Leveling Motor
    *b Headlight Unit
    *c Headlight ECU Sub-assembly

CAUTION / NOTICE / HINT

Note

After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary Click here.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B2417 and B2418 output does not occur A
      DTC B2417 output occurs B
      DTC B2418 output occurs D

    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. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Perform the Active Test according to the display on the GTS.

      AFS
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the power switch is on (READY) and vehicle stopped
      Result
      Result Proceed to
      The Active Test is performed normally A
      The Active Test is not performed normally B

    A

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    B

  4. INSPECT HEADLIGHT UNIT LH

    B002BG9E02
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Headlight ECU Sub-assembly LH)
    *b

    Front view of wire harness connector

    (to Headlight Unit LH)

    1. Remove the headlight unit LH.


    2. Remove the headlight ECU sub-assembly LH Click here.

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

      Standard Resistance
      for Triple Beam Headlight
      Tester Connection Condition Specified Condition
      B-7 - O-1 Always Below 1 Ω
      B-17 - O-4 Always Below 1 Ω
      for Single Beam Headlight
      Tester Connection Condition Specified Condition
      B-7 - O-1 Always Below 1 Ω
      B-17 - O-3 Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for Triple Beam Headlight) B
      NG (for Signle Beam Headlight) C

    B

    REPLACE HEADLIGHT UNIT LH Click here

    C

    REPLACE HEADLIGHT UNIT LH Click here

    A

  5. CHECK HEADLIGHT LEVELING MOTOR LH


    1. Temporarily replace the headlight leveling motor LH with a new or normally functioning one.

    2. Turn the power switch on (IG).

    3. Clear the DTCs Click here.

    4. Recheck for DTCs Click here.

      OK
      DTC B2417 output does not occur

    OK

    END (HEADLIGHT LEVELING MOTOR LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

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


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Perform the Active Test according to the display on the GTS.

      AFS
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the power switch is on (READY) and vehicle stopped
      Result
      Result Proceed to
      The Active Test is performed normally A
      The Active Test is not performed normally B

    A

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    B

  7. INSPECT HEADLIGHT UNIT RH

    B002BG9E02
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Headlight ECU Sub-assembly RH)
    *b

    Front view of wire harness connector

    (to Headlight Unit RH)

    1. Remove the headlight unit RH.


    2. Remove the headlight ECU sub-assembly RH Click here.

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

      Standard Resistance
      for Triple Beam Headlight
      Tester Connection Condition Specified Condition
      B-7 - O-1 Always Below 1 Ω
      B-17 - O-4 Always Below 1 Ω
      for Single Beam Headlight
      Tester Connection Condition Specified Condition
      B-7 - O-1 Always Below 1 Ω
      B-17 - O-3 Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for Triple Beam Headlight) B
      NG (for Single Beam Headlight) C

    B

    REPLACE HEADLIGHT UNIT RH Click here

    C

    REPLACE HEADLIGHT UNIT RH Click here

    A

  8. CHECK HEADLIGHT LEVELING MOTOR RH


    1. Temporarily replace the headlight leveling motor RH with a new or normally functioning one.

    2. Turn the power switch on (IG).

    3. Clear the DTCs Click here.

    4. Recheck for DTCs Click here.

      OK
      DTC B2418 output does not occur

    OK

    END (HEADLIGHT LEVELING MOTOR RH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here