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 swivel motor (leveling portion) receives a signal from the AFS ECU to operate. The AFS ECU receives a signal indicating the operating conditions of the headlight swivel motor (leveling portion).

DTC Code DTC Detection Condition Trouble Area
B2417

  • Malfunction in headlight swivel motor LH (leveling portion)

  • Open or short in headlight swivel motor LH (leveling portion) circuit

  • Headlight assembly LH (headlight swivel motor [leveling portion])

  • Headlight swivel motor LH (leveling portion)

  • Harness or connector

  • AFS ECU
B2418

  • Malfunction in headlight swivel motor RH (leveling portion)

  • Open or short in headlight swivel motor RH (leveling portion) circuit

  • Headlight assembly RH (headlight swivel motor [leveling portion])

  • Headlight swivel motor RH (leveling portion)

  • Harness or connector

  • AFS ECU

WIRING DIAGRAM

A01GYNPE06

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTC Click here.

      OK
      DTC B2417 or B2418 output does not occur

    NG

    PERFORM ACTIVE TEST USING GTS (HEADLIGHT LEVELING MOTOR) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. PERFORM ACTIVE TEST USING GTS (HEADLIGHT LEVELING MOTOR)


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

      AFS*1 or AHS*2
      Tester Display Test Part Control Range
      Drive The Leveling Motor Leveling motor operation Up - Down - Stop

      • *1: w/o Adaptive High Beam System

      • *2: w/ Adaptive High Beam System

      OK
      Headlight swivel motors (leveling portion) operate normally

    NG

    CHECK HARNESS AND CONNECTOR (AFS ECU - BATTERY AND BODY GROUND) Click here

    OK

  3. CHECK HEADLIGHT SWIVEL MOTOR (LEVELING PORTION)


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

    2. Check for DTC Click here.

      OK
      DTC B2417 or B2418 output does not occur

    NG

    REPLACE AFS ECU Click here

    OK

    END (HEADLIGHT SWIVEL MOTOR [LEVELING PORTION] WAS DEFECTIVE)

  4. CHECK HARNESS AND CONNECTOR (AFS ECU - BATTERY AND BODY GROUND)

    A01GZ0HE48

    1. Disconnect the A37 AFS ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A37-14 (IGS) - Body ground Power switch on (IG) 11 to 14 V
      A37-15 (IG) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A37-22 (E1) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (AFS ECU - HEADLIGHT)

    A01H0KLE06

    1. Disconnect the A37 AFS ECU connector.

    2. Disconnect the B1*1 or B11*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
      A37-1 (SMBL) - B1-13 (LHB1) Always Below 1 Ω
      A37-27 (LH-) - B1-22 (LH E) Always Below 1 Ω
      A37-30 (LH+) - B1-14 (LHM+) Always Below 1 Ω
      A37-1 (SMBL) - Body ground Always 10 kΩ or higher
      A37-27 (LH-) - Body ground Always 10 kΩ or higher
      A37-30 (LH+) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      A37-2 (SMBR) - B11-13 (RHB1) Always Below 1 Ω
      A37-28 (RH-) - B11-22 (RH E) Always Below 1 Ω
      A37-11 (RH+) - B11-14 (RHM+) Always Below 1 Ω
      A37-2 (SMBR) - Body ground Always 10 kΩ or higher
      A37-28 (RH-) - Body ground Always 10 kΩ or higher
      A37-11 (RH+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT HEADLIGHT ASSEMBLY

    A01GX7SE07

    1. Remove the headlight Click here.

    2. Disconnect the headlight swivel motor (leveling portion) connector Click here.

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      13 (LHB1) - 1 Always Below 1 Ω
      14 (LHM+) - 4 Always Below 1 Ω
      22 (LH E) - 3 Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      13 (RHB1) - 1 Always Below 1 Ω
      14 (RHM+) - 4 Always Below 1 Ω
      22 (RH E) - 3 Always Below 1 Ω

    NG

    REPLACE HEADLIGHT ASSEMBLY Click here

    OK

  7. CHECK HEADLIGHT SWIVEL MOTOR (LEVELING PORTION)


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

    2. Check for DTC Click here.

      OK
      DTC B2417 or B2418 output does not occur

    NG

    REPLACE AFS ECU Click here

    OK

    END (HEADLIGHT SWIVEL MOTOR [LEVELING PORTION] WAS DEFECTIVE)