Operation CHARM: Car repair manuals for everyone.

B1A3E






B1A3E-SIREN / ITM MISMATCH







- When Monitored:
While the VTSS is armed.

- Set Condition:
Intrusion Transceiver Module (ITM) loses battery voltage.





DETERMINING IF DTC IS CURRENT

NOTE: Diagnose any related Communication DTC(s) before continuing.

1. With a scan tool, read and record DTCs.
2. With the scan tool, clear DTCs).
3. Turn the ignition off and remove the key from the ignition.
4. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.
5. Disarm the VTSS.
6. Using the scan tool, read DTCs.

Does the DTC reset?

Yes

- Check for and correct any CAN Interior Bus DTCs set in the ITM or other modules. Also check for intermittent loss of Fused B(+) to the ITM.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

- DTC is not active at this time. Test complete.
- Perform the BODY VERIFICATION TEST. Body Verification Test