LIGHTING SYSTEM, Diagnostic DTC:B2417 and 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 No.

Detection Item

DTC Detection Condition

Trouble Area

B2417

Headlight Beam Level Control Motor LH Malfunction

  • 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

Headlight Beam Level Control Motor RH Malfunction

  • 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

E283166E01

PROCEDURE

  1. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > AFS > Clear DTCs

    2. Check for DTCs.

      Click here

      Body Electrical > AFS > Trouble Codes

      OK

      DTC B2417 or B2418 output does not occur.

    Result

    Result

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG

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

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

      Click here

      Body Electrical > AFS > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Drive The Leveling Motor

      Leveling motor operation

      Up/Down/Stop

      Up: Move up

      Down: Move down

      Stop: Stop

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

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

      OK

      Headlight leveling motors operate normally.

      Body Electrical > AFS > Active Test

      Tester Display

      Drive The Leveling Motor

    Result

    Result

    OK

    NG
    NG

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

    OK

  3. CHECK HEADLIGHT LEVELING MOTOR (SET)

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

      Click here

    2. Check for DTCs.

      Click here

      Body Electrical > AFS > Trouble Codes

      OK

      DTC B2417 or B2418 output does not occur.

    Result

    Result

    OK

    NG
    OK

    END (REPLACE HEADLIGHT LEVELING MOTOR)

    Click here

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY

    Click here

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

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

      Click here

      Body Electrical > AFS > Data List

      Tester Display

      +B

      Body Electrical > AFS > Data List

      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.

    Result

    Result

    OK

    NG
    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. E131580C05

      *a

      Front view of wire harness connector

      (to Headlight Swivel ECU Assembly)

      Disconnect the A46 headlight swivel ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A46-22 (E1) - Body ground

      Always

      Below 1 Ω

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the A46 headlight swivel ECU connector.

    2. Disconnect the A49*1 or A50*2 headlight connector.

      • *1: for LH

        *2: for RH

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

      Standard Resistance

      Table 1. for LH:

      Tester Connection

      Condition

      Specified Condition

      A46-3 (LHT) - A49-6 (LHB1)

      Always

      Below 1 Ω

      A46-27 (LH-) - A49-8 (LH E)

      Always

      Below 1 Ω

      A46-30 (LH+) - A49-7 (LHM+)

      Always

      Below 1 Ω

      A46-3 (LHT) - Body ground

      Always

      10 kΩ or higher

      A46-27 (LH-) - Body ground

      Always

      10 kΩ or higher

      A46-30 (LH+) - Body ground

      Always

      10 kΩ or higher
      Table 2. for RH:

      Tester Connection

      Condition

      Specified Condition

      A46-4 (RHT) - A50-6 (RHB1)

      Always

      Below 1 Ω

      A46-28 (RH-) - A50-8 (RH E)

      Always

      Below 1 Ω

      A46-11 (RH+) - A50-7 (RHM+)

      Always

      Below 1 Ω

      A46-4 (RHT) - Body ground

      Always

      10 kΩ or higher

      A46-28 (RH-) - Body ground

      Always

      10 kΩ or higher

      A46-11 (RH+) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT HEADLIGHT UNIT

    1. Remove the headlight unit.

      Click here

    2. E287385C01

      *A

      for LH

      *B

      for RH

      *a

      Component without harness connected

      (Headlight Unit)

      *b

      Front view of wire harness connector

      (to Headlight Leveling Motor)

      Disconnect the headlight leveling motor connector.

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

      Standard Resistance

      Table 3. for LH:

      Tester Connection

      Condition

      Specified Condition

      6 (LHB1) - 1 (IG)

      Always

      Below 1 Ω

      7 (LHM+) - 2 (LIN)

      Always

      Below 1 Ω

      8 (LH E) - 3 (GND)

      Always

      Below 1 Ω
      Table 4. for RH:

      Tester Connection

      Condition

      Specified Condition

      6 (RHB1) - 1 (IG)

      Always

      Below 1 Ω

      7 (RHM+) - 2 (LIN)

      Always

      Below 1 Ω

      8 (RH E) - 3 (GND)

      Always

      Below 1 Ω

    Result

    Result

    OK

    NG
    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY

    Click here

    OK

  8. CHECK HEADLIGHT LEVELING MOTOR (SET)

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

      Click here

    2. Check for DTCs.

      Click here

      Body Electrical > AFS > Trouble Codes

      OK

      DTC B2417 or B2418 output does not occur.

    Result

    Result

    OK

    NG
    OK

    END (REPLACE HEADLIGHT LEVELING MOTOR)

    Click here

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY

    Click here