Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode

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

Step	Action	Yes	No
Schematic Reference: Theft Deterrent System Schematics
1	Did you review the Theft Deterrent Description and Operation and perform the necessary inspections?	Go to Step 2	Go to Symptoms - Theft Deterrent
2	Verify the horn is inoperative in alarm mode. Does the system operate normally?	Go to Testing for Electrical Intermittents in Wiring Systems	Go to Step 3
3	With the alarm in alarm mode, test cavity 5 of the Theft Deterrent Module for continuity to ground. Refer to Circuit Testing in Wiring Systems. is continuity to ground present?	Go to Step 4	Go to Step 5
4	Repair the open in the horn signal circuit between cavity 5 of the theft deterrent module and splice 214. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 6	-
5	Replace the Theft Deterrent Control Module. Refer to Theft Deterrent Control Module Replacement . Did you complete the repair?	Go to Step 6	-
6	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3