Dodge Ram 2004 - Horn Fails to Sound When Alarm Is Tripped

Symptom:
*HORN FAILS TO SOUND WHEN ALARM IS TRIPPED
POSSIBLE CAUSES
DTC PRESENT
HORN CIRCUIT
INSTRUMENT CLUSTER - VTSS
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read FCM DTC’s.
Does the DRBIIIt display a HORN RELAY CONTROL CIRCUIT DTC active?
All
Yes → Refer to the Ignition, Power, Accessory category for the related
symptom(s).
Perform VTSS VERIFICATION TEST - 1A.
No → Go To 2
2 Does the horn operate from the horn button? All
Yes → Replace and program the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Refer to symptom Horns Inoperative in the Ignition, Power,
Accessory category.
Perform VTSS VERIFICATION TEST - 1A.
524
VEHICLE THEFT/SECURITY