Intrusion Transceiver Module (ITM)

B1A3C-INTERNAL SIREN BATTERY



- When Monitored:
Continuously, with the engine over 600 rpm.

- Set Condition:
When the internal battery within the Siren does not charge as expected, the Intrusion Transceiver Module (ITM) sets this code.





1. DETERMINE IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT
1. With a scan tool, read and record DTCs.
2. With the scan tool, clear DTCs.
3. Start the engine and allow it to idle for two minutes then turn the engine off.
4. With the scan tool, read DTCs.

Does the DTC reset?

Yes

- Go To 2

No

- Test complete. The DTC is not active at this time.

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

- Replace the Siren the.
- Perform the BODY VERIFICATION TEST. Body Verification Test.