LIGHTING 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 leveling motor receives a signal from the headlight swivel ECU to operate. The headlight swivel ECU receives a signal indicating the operating conditions of the headlight leveling motor.

DTC Code DTC Detection Condition Trouble Area
B2417

  • Malfunction in the headlight leveling motor LH.

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

  • Headlight leveling motor LH

  • Headlight swivel ECU assembly

  • Headlight unit LH

  • Harness or connector
B2418

  • Malfunction in the headlight leveling motor RH.

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

  • Headlight leveling motor RH

  • Headlight swivel ECU assembly

  • Headlight unit RH

  • Harness or connector

WIRING DIAGRAM

A00962QE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2417 or B2418 output does not occur.

    NG

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

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (LEVELING MOTOR)


    1. Using the intelligent tester, perform the Active Test Click here.

      AFS
      Tester Display Test Part Control Range Diagnostic Note
      Drive The Leveling Motor UP* Leveling motor upward operation ON/OFF

      ON: Move up

      OFF: Stop
      Drive The Leveling Motor DOWN* Leveling motor downward operation ON/OFF

      ON: Move down

      OFF: Stop

      • *: Perform the Active Test with the engine running and the vehicle stopped.

      OK
      Headlight leveling motors operate normally.

    NG

    READ VALUE USING INTELLIGENT TESTER (HEADLIGHT SWIVEL ECU) Click here

    OK

  3. CHECK HEADLIGHT LEVELING MOTOR (OPERATION)


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

    2. Check for DTCs Click here.

      OK
      DTC B2417 or B2418 output does not occur.

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

    OK

    END (REPLACE HEADLIGHT LEVELING MOTOR) Click here

  4. READ VALUE USING INTELLIGENT TESTER (HEADLIGHT SWIVEL ECU)


    1. Using the intelligent tester, read the Data List Click here.

      AFS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      +B IG power supply voltage value / 0 to 19.75 V 11 to 14 V -
      OK
      Power supply voltage is 11 to 14 V.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - HEADLIGHT SWIVEL ECU ASSEMBLY)

    OK

  5. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - BODY GROUND)


    1. A009ALYE26
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Swivel ECU Assembly)

      Disconnect the A58 headlight swivel ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (E1) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - HEADLIGHT UNIT)


    1. Disconnect the A58 headlight swivel ECU connector.

    2. Disconnect the A30*1 or A31*2 headlight 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
      A58-3 (LHT) - A30-6 (LHB1) Always Below 1 Ω
      A58-27 (LH-) - A30-8 (LHE) Always Below 1 Ω
      A58-30 (LH+) - A30-7 (LHM+) Always Below 1 Ω
      A58-3 (LHT) - Body ground Always 10 kΩ or higher
      A58-27 (LH-) - Body ground Always 10 kΩ or higher
      A58-30 (LH+) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      A58-4 (RHT) - A31-6 (RHB1) Always Below 1 Ω
      A58-28 (RH-) - A31-8 (RHE) Always Below 1 Ω
      A58-11 (RH+) - A31-7 (RHM+) Always Below 1 Ω
      A58-4 (RHT) - Body ground Always 10 kΩ or higher
      A58-28 (RH-) - Body ground Always 10 kΩ or higher
      A58-11 (RH+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT HEADLIGHT UNIT


    1. Remove the headlight unit Click here.

    2. A0096YLE01
      Text in Illustration
      *A for LH
      *B for RH

      Disconnect the headlight leveling motor connector.

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      6 (LHB1) - 1 (LHB1) Always Below 1 Ω
      7 (LHM+) - 2 (LHM+) Always Below 1 Ω
      8 (LHE) - 3 (LHE) Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      6 (RHB1) - 1 (RHB1) Always Below 1 Ω
      7 (RHM+) - 2 (RHM+) Always Below 1 Ω
      8 (RHE) - 3 (RHE) Always Below 1 Ω

    NG

    REPLACE HEADLIGHT UNIT Click here

    OK

  8. CHECK HEADLIGHT LEVELING MOTOR (OPERATION)


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

    2. Check for DTCs Click here.

      OK
      DTC B2417 or B2418 output does not occur.

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

    OK

    END (REPLACE HEADLIGHT LEVELING MOTOR) Click here