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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ AFS) - Diagnostic Codes (1 Of 2) >> LIGHTING SYSTEM (w/ AFS) >> DTC B242F-14: ECUB Circuit Short to Ground or Open [11/2023 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    for HV Model: Refer to REGISTRATION [11/2023 - ]

    for Gasoline Model: Refer to REGISTRATION [11/2023 - ]

  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

    Refer to INITIALIZATION [11/2023 - ]

  • When replacing the headlight assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
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