Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

HORN FAILS TO SOUND WHEN ALARM IS TRIPPED - DIAGNOSTIC PROCEDURE

TEST	ACTION
1	Push the Horn Button on the Steering Wheel. Does the Horn operate properly? Yes --> Go To 2 No --> Refer to Service Information to diagnose the horn system.
2	Disconnect the CTM harness connector. Connect a jumper wire between Horn Relay Control circuit and ground. Does the horn sound? Yes --> Replace the Central Timer Module. Perform VTSS VERIFICATION TEST - 1A . No --> Repair the Horn Relay Control circuit for an open. Perform VTSS VERIFICATION TEST - 1A .