Dodge 2004 Neon SX2 - Horn Fails to Sound During Alarm

Symptom:
*HORN FAILS TO SOUND DURING ALARM
POSSIBLE CAUSES
HORN RELAY CONTROL CIRCUIT OPEN
REMOTE KEYLESS ENTRY MODULE
TEST ACTION APPLICABILITY
1 Ensure the horn is operational from the horn switch before proceeding. If the horn
does not work properly, refer to the appropriate Service Information and repair the
Horn circuit as necessary.
Disconnect the Remote Keyless Entry module connector.
Connect one end of a jumper wire to the Horn Relay Control circuit in the RKE
connector.
Momentarily touch the other end of the jumper wire to ground.
Did the horn sound when the jumper wire was attached?
All
Yes → Replace the Remote Keyless Entry Module.
Perform VTSS VERIFICATION TEST - 1A.
No → Repair the Horn Relay Control circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
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VEHICLE THEFT/SECURITY