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Symptom: *VTSS SIREN INOP (EXPORT ONLY) POSSIBLE CAUSES INTERMITTENT CONDITION SIREN FUSED B(+) CIRCUIT OPEN SIREN SIGNAL CONTROL CIRCUIT OPEN VTSS SIREN OPEN GROUND CIRCUIT THATCHAM ALARM MODULE - INTERNAL MALFUNCTION TEST ACTION APPLICABILITY 1 With the DRBIII t, actuate the VTSS Siren. Does the Siren sound while actuating? All Yes → The condition that caused this symptom is currently not present. Inspect the related wiring harness for a possible intermittent No → Go To 2 2 Gain access to the VTSS Siren. All Yes → Go To 3 No → Repair the Fused B(+) circuit for an open. Perform VTSS VERIFICATION TEST - 1A. 3 With the VTSS Siren connector disconnected. All Yes → Go To 4 No → Repair the ground circuit for an open. Perform VTSS VERIFICATION TEST - 1A. 4 With the VTSS Siren connector disconnected. All Yes → Replace the VTSS Siren. Perform VTSS VERIFICATION TEST - 1A. No → Go To 5 1165 VEHICLE THEFT/SECURITY |