Horn Fails To Sound With VTSS

Possible Causes:

Testing

The Horn must be operational from the horn button for the results of this test to be valid. Open the Drivers door window. Remove the key from the Ignition switch. Lock the doors with the RKE transmitter or power door lock switch. Close all the doors and tailgate. Wait approximately 15 seconds for the VTSS indicator to flash at a slower rate, indicating the Vehicle Theft Security System is armed. Manually unlock the driver door lock. Trip the VTSS by opening the drivers door. Did the Horn sound when the VTSS was tripped? If yes, the condition that caused this symptom is not currently present. Inspect the related wiring harness for a possible intermittent condition. Look for any chafed, pierced, pinched or partially broken wires. Perform VTSS VERIFICATION TEST . If no, go to next step.
With the DRBIII(R) in Miscellaneous check the Body Control Module country code setting. Is the country code correct? If yes, replace the Body Control Module. See BODY CONTROL MODULE (BCM) in REMOVAL & INSTALLATION. Perform BODY VERIFICATION TEST . If no, program the correct country code setting. Perform VTSS VERIFICATION TEST .