B1A3E

B1A3E-SIREN / ITM MISMATCH

WHEN MONITORED
While the VTSS is armed.

SET CONDITION
ITM losses battery voltage.

POSSIBLE CAUSES
- CAN B BUS communication problems
- Intermittent loss of fused B(+) to the ITM with the VTSS armed

DIAGNOSTIC TEST

1. DETERMINING IF DTC IS CURRENT

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

With a scan tool, read and record DTC(s).
With the scan tool, clear DTC(s).
Turn the ignition off and remove the key from the ignition.
Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.
Disarm the VTSS.
Using the scan tool, read DTC(s).

Q: Does the DTC reset?

YES: Check for and correct any CAN B Bus DTC's set in the ITM or other modules. Also check for intermittent loss Fused B(+) to the ITM.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: DTC is not active at this time. Test complete.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test