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

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2417 Headlight Beam Level Control Motor LH Malfunction Malfunction in headlight leveling motor LH

  • Headlight ECU sub-assembly LH

  • Headlight Unit Assembly LH (Headlight Leveling Motor)

 -
B2418 Headlight Beam Level Control Motor RH Malfunction Malfunction in headlight leveling motor RH

  • Headlight ECU sub-assembly RH

  • Headlight Unit Assembly RH (Headlight Leveling Motor)

 -

WIRING DIAGRAM

A001OH9E12

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


      Body Electrical > HL AutoLeveling > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Turn the power switch on (IG).

    2. Turn on the headlights using the headlight dimmer switch.

    3. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      Result
      Result Proceed to
      DTC B2417 and B2418 output does not occur A
      DTC B2417 output occurs B
      DTC B2418 output occurs C

    A

    USE SIMULATION METHOD TO CHECK Click here

    C

    PERFORM ACTIVE TEST USING GTS (LEVELING MOTOR) Click here

    B

  3. PERFORM ACTIVE TEST USING GTS (LEVELING MOTOR)


    1. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > HL AutoLeveling > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Headlight leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the power switch is on (READY) and vehicle stopped

      Body Electrical > HL AutoLeveling > Active Test
      Tester Display
      Drive The Leveling Motor
      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. CHECK HEADLIGHT UNIT ASSEMBLY LH (LEVELING MOTOR)


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

      Click here

    2. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > HL AutoLeveling > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Headlight leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the power switch is on (READY) and vehicle stopped

      Body Electrical > HL AutoLeveling > Active Test
      Tester Display
      Drive The Leveling Motor
      Result
      Result Proceed to
      The Active Test is performed normally A
      The Active Test is not performed normally B

    A

    END (HEADLIGHT UNIT ASSEMBLY LH [LEVELING MOTOR] WAS DEFECTIVE)

    B

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

  5. PERFORM ACTIVE TEST USING GTS (LEVELING MOTOR)


    1. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > HL AutoLeveling > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Headlight leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the power switch is on (READY) and vehicle stopped

      Body Electrical > HL AutoLeveling > Active Test
      Tester Display
      Drive The Leveling Motor
      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

  6. CHECK HEADLIGHT UNIT ASSEMBLY RH (LEVELING MOTOR)


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

      Click here

    2. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > HL AutoLeveling > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Headlight leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the power switch is on (READY) and vehicle stopped

      Body Electrical > HL AutoLeveling > Active Test
      Tester Display
      Drive The Leveling Motor
      Result
      Result Proceed to
      The Active Test is performed normally A
      The Active Test is not performed normally B

    A

    END (HEADLIGHT UNIT ASSEMBLY RH [LEVELING MOTOR] WAS DEFECTIVE)

    B

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here