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Home >> Toyota >> 2025 >> RAV4 Plug-In Hybrid XSE >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> HEADUP Display System - Diagnostic Codes (PHEV) >> HEADUP Display System >> DTC B1321-87: Lost Communication with EMV Missing Message [06/2020 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • To measure the resistance of the CAN bus, turn the ignition switch off, wait at least 1 minutes without operating any keys or switches or opening or closing the doors, disconnect the auxiliary battery, wait at least 1 minutes again, and then measure the resistance.
  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • When disconnecting and reconnecting the auxiliary battery

    Refer to WORK PROCEDURE [06/2020 - 10/2022]

    HINT: 

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [06/2020 - 12/2021] , or refer to AUTOMATIC LEARNING CHART [12/2021 - ]

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

HINT: