THEFT DETERRENT SYSTEM While Alarm is Armed, Battery is Reconnected but Alarm does not Sound

DESCRIPTION

While the alarm is armed, the EEPROM inside the main body ECU (multiplex network body ECU) will remember the armed state even if the battery is disconnected, and the alarm will sound when the battery is reconnected.

If the alarm does not sound when the battery is reconnected, the alarm may not have been set, or there may be a malfunction in the main body ECU (multiplex network body ECU).

PROCEDURE

1. CHECK SECURITY INDICATOR LIGHT OPERATION

   
   

   1. Close all doors and the engine hood.

   2. Lock the doors using wireless operation or entry operation.

   3. Check that the security indicator light illuminates.

   4. After 9 seconds*1 or 30 seconds*2 have elapsed, check that the security indicator light changes from illuminated to flashing.

      
      

      • *1: w/ Panoramic View Monitor System

      • *2: w/o Panoramic View Monitor System

      Tech Tips

      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

   
   

   OK

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

   NG

   GO TO THEFT DETERRENT SYSTEM CANNOT BE SET OR UNSET Click here