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Home >> Lexus >> 2019 >> LS 500 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> HEADUP Display System - Diagnostic Codes & Circuit Tests >> HEADUP Display System >> DTC B1321-87: Lost Communication with EMV Missing Message [12/2017 - 10/2020] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • To measure the resistance of the CAN bus, turn the engine switch off, wait at least 1 minutes without operating any keys or switches or opening or closing the doors, disconnect the battery, wait at least 1 minutes again, and then measure the resistance.
  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Refer to PRECAUTION [12/2017 - 10/2020]

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • When disconnecting the cable from the negative (-) battery terminal, refer to Initialization.

    Refer to INITIALIZATION [12/2017 - 09/2018] , or refer to INITIALIZATION [09/2018 - 10/2020]

  • Communication malfunction DTCs may be output if a radio receiver assembly from another vehicle is installed to this vehicle. Therefore, when replacing the radio receiver assembly, be sure to replace it with a new one.
    • Communication malfunction DTC is output
    • Does not operate normally

HINT: