*HORN FAILS TO SOUND WITH VTSS

For a complete wiring diagram Refer to Section 8W

Possible Causes

BODY CONTROL MODULE (BCM) DTCS PRESENT

HORN / RELATED CIRCUITS

INCORRECT COUNTRY CODE SETTING PROGRAMMED IN BCM

BODY CONTROL MODULE (BCM)

1.CHECK FOR DTCs IN THE BCM

Does the scan tool display any DTCs?

Yes

Diagnose and repair the DTC(s) Refer to the Table of Contents in the applicable Section for the diagnostic procedure(s).
Perform VTSS VERIFICATION TEST - 1A. (Refer to VTSS VERIFICATION TEST - 1A - STANDARD PROCEDURE) in this Section.

2.VERIFY VTSS OPERATION

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

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. (Refer to VTSS VERIFICATION TEST - 1A - STANDARD PROCEDURE) in this Section.

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

Is the BCM programmed with the correct country code setting?

Yes

Replace and program the BCM in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Program the BCM with the correct country code setting.
Perform VTSS VERIFICATION TEST - 1A. (Refer to VTSS VERIFICATION TEST - 1A - STANDARD PROCEDURE) in this Section.