Horn Fails To Sound With VTSS

*HORN FAILS TO SOUND WITH VTSS

For a complete wiring diagram refer to Diagrams/Electrical





Diagnostic Test

1. CHECK FOR DTCs IN THE BCM

Turn the ignition on.

With the scan tool, read BCM DTCs.

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 2

2. VERIFY VTSS OPERATION

NOTE: The Horn must be operational from the horn button for the results of this test to be valid.

Open the driver door window.

Remove the key from the ignition switch.

Lock the doors with the RKE transmitter or power door lock switch.

Close all of the doors and the tailgate.

Wait approximately 15 seconds for the VTSS indicator to flash at a slower rate indicating that the Vehicle Theft Security System is armed.

Manually unlock the driver door lock.

Trip the VTSS by opening the driver door.

Did the Horn sound when the VTSS was tripped?

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 - 1A. VTSS Verification Test

No

- Go To 3

3. VERIFY THE BCM IS PROGRAMMED WITH THE CORRECT COUNTRY CODE SETTING

With the scan tool in BCM, check the country code setting.

Is the BCM programmed with the correct country code setting?

Yes

- Replace and program the BCM.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Program the BCM with the correct country code setting.
- Perform VTSS VERIFICATION TEST - 1A. VTSS Verification Test