Schematic Reference: Theft Deterrent System Schematics

DEFINITION: The horn does not sound when the content theft deterrent (CTD) system is in alarm mode.

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Perform one of the following to activate the content theft deterrent (CTD) Alarm Mode:

Do all of the alarm mode functions activate, the lights flash and the horn pulses?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Are only the horns inoperative?

Go to Step 4

Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative

Operate the horns from the horn pad.

Do the horns operate properly?

Go to Step 5

Go to Horns Inoperative

Test the control circuit of the horn relay for an open between the body control module (BCM) and the horn relay. Refer to Circuit Testing .

Did you find and correct the condition?

Go to Step 8

Go to Step 6

Inspect for poor connections at the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.

Did you find and correct the condition?

Go to Step 8

Go to Step 7

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 8

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3