VTSS Will Not Arm
VTSS WILL NOT ARMPOSSIBLE CAUSES
- Vehicle theft security system (VTSS) disabled in body control module (BCM)
- Body control module (BCM) DTCs present
- Ajar switch circuits
- Body control module (BCM)
DIAGNOSTIC TEST
1. VERIFY THAT VTSS IS ENABLED IN THE BCM
Turn the ignition on.
With the scan tool in BCM, check that the VTSS is enabled.
Q: Is the VTSS enabled?
YES: Go To 2
NO: With the scan tool, enable the VTSS.
Perform VTSS VERIFICATION TEST - 1A. VTSS Verification Test
2. CHECK FOR DTCs IN THE BCM
With the scan tool, read BCM DTCs.
Q: Does the scan tool display any DTCs?
YES: Diagnose and repair the DTC(s).
Perform VTSS VERIFICATION TEST - 1A. VTSS Verification Test
NO: Go To 3
3. CHECK AJAR SWITCH STATES WITH THE SCAN TOOL
Verify that the tailgate, flip-up glass, and all doors are closed.
With the scan tool in BCM, select Data Display and read the Ajar Switch states.
Q: Do any Ajar Switch states display: Closed?
YES: Diagnose and repair all Ajar Switch circuits that display as Closed on the scan tool. Refer to Lighting and Horns/Testing and Inspection for Ajar Switch related diagnostic procedures.
Perform VTSS VERIFICATION TEST - 1A. VTSS Verification Test
NO: Replace and program the BCM.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test