B1A3C-INTERNAL SIREN BATTERY

For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    Continuously with the engine over 600 RPM.

  • Set Condition:

    When the internal battery within the siren does not charge as expected, the ITM sets this code.


Possible Causes
  
VEHICLE STORED WITH NO BATTERY VOLTAGE FOR EXTENDED PERIOD OF TIME
  
SIREN
  



Diagnostic Test

1.DETERMINING IF DTC IS CURRENT






Does the DTC reset?

Yes
  • Go To2


No
  • DTC is not active at this time. Test complete.

2.VEHICLE STORED WITH NO BATTERY VOLTAGE FOR EXTENDED PERIOD OF TIME

NOTE: If the vehicle was allowed to sit with no battery voltage for an extended period of time the back up battery located in the siren may discharge and need to be recharged.



Was the vehicle battery power just restored after the vehicle was stored with no power for an extended period of time?

Yes
  • Allow the vehicle to sit with a fully charged battery for two hours then restart this procedure.


No
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)