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Home >> Toyota >> 2019 >> Mirai >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Theft Deterrent System - Diagnostics & Symptom Tests >> Theft Deterrent System >> While Alarm is Armed, Battery is Reconnected but Alarm does not Sound [06/2015 - ] >> Procedure

While Alarm is Armed, Battery is Reconnected but Alarm does not Sound [06/2015 - ]: Procedure

  1. CHECK SECURITY INDICATOR LIGHT OPERATION 
    1. Close all doors, the luggage compartment door and hood.
    2. Lock the doors using key link operation, wireless operation or entry operation.
    3. Check that the security indicator light illuminates.
    4. After 30 seconds have elapsed, check that the security indicator light changes from illuminated to flashing.

      HINT: 

      The illumination status of the security indicator light can be used to determine whether the theft deterrent system is set or unset.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    NG 

    GO TO THEFT DETERRENT SYSTEM CANNOT BE SET OR UNSET. Refer to  Theft Deterrent System cannot be Set or Unset [06/2015 - ]