HEADLIGHT ECU INSTALLATION

CAUTION / NOTICE / HINT

Note


  • Be sure to read Precaution thoroughly before servicing.

    Click here

  • Handle components indoors as much as possible to prevent foreign matter from entering and adhering to headlight assembly components.

  • Do not reuse parts which have reduced fastening ability due to thread damage.

  • When installing components, make sure that the wire harness is not pinched or pulled.

Tech Tips


  • Use the same procedure for the RH and LH sides.

  • The procedure listed below is for the LH side.

PROCEDURE


  1. INSTALL HEADLIGHT GASKET

    Note


    • Prevention of static electricity is required during this procedure.

    • Use static electricity countermeasures SST (desktop antistatic mat set) and observe all precautions to prevent damage to the system by electrostatic discharge (ESD).

    • If the headlight gasket has been removed, replace it with a new one.

    SST
    09890-47010   ( 09891-04010, 09891-04020, 09891-04030, 09891-04040 )

    1. Install a new headlight gasket to the headlight ECU sub-assembly LH.

      B002C0IE01
      Text in Illustration
      *A for Single Beam Headlight, w/o AFS *B

      for Single Beam Headlight, w/ AFS

      for Triple Beam Headlight

  2. INSTALL HEADLIGHT ECU SUB-ASSEMBLY LH

    Note


    • Prevention of static electricity is required during this procedure.

    • Use static electricity countermeasures SST (desktop antistatic mat set) and observe all precautions to prevent damage to the system by electrostatic discharge (ESD).

    • If the headlight light control ECU sub-assembly LH has been dropped , replace it with a new one.

    • If the headlight light control ECU sub-assembly LH has been removed, replace the headlight gasket with a new one.

    SST
    09890-47010   ( 09891-04010, 09891-04020, 09891-04030, 09891-04040 )

    1. Connect each connector.

      B002BMAE01
      Text in Illustration
      *A for Single Beam Headlight, w/o AFS *B

      for Single Beam Headlight, w/ AFS

      for Triple Beam Headlight

    2. Return the connector cover to its original position.

      B002B74E01
      Text in Illustration
      *A for Single Beam Headlight, w/o AFS *B

      for Single Beam Headlight, w/ AFS

      for Triple Beam Headlight

    3. Install the headlight ECU sub-assembly LH with the 3 screws.

      B002BDEE01
      Text in Illustration
      *A for Single Beam Headlight, w/o AFS *B

      for Single Beam Headlight, w/ AFS

      for Triple Beam Headlight

  3. INSTALL HEADLIGHT ASSEMBLY LH

    for Single Beam Headlight:

    Click here

    for Triple Beam Headlight:

    Click here

  4. PERFORM INITIALIZATION (When Replacing the Headlight ECU Sub-assembly LH)

    Note


    • If any of the work in the table below has been performed, vehicle information registration and initialization of the headlight ECU sub-assembly LH is necessary.

      Click here

      Performed Work or System Condition Necessary Procedures
      Replacement of the headlight ECU sub-assembly LH Vehicle information registration for the headlight ECU sub-assembly LH
      Initialization of the headlight ECU sub-assembly LH

    • A new headlight ECU sub-assembly LH cannot operate until the vehicle information is registered.

    • After replacing the headlight ECU sub-assembly LH, it is necessary to register the vehicle information and then perform initialization.

    • Even if the headlight ECU sub-assembly RH is replaced with a new one, vehicle information registration and initialization are not necessary.

    • Vehicle information registration must be performed with the multiplex network body ECU (main body ECU) and hybrid vehicle control ECU connected via CAN communication.