Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode
Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Theft Deterrent System Schematics DEFINITION: The horn does not sound when the content theft deterrent (CTD) system is in alarm mode. |
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| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | 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 |
| 3 | Are only the horns inoperative? | Go to Step 4 | Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative |
| 4 | Operate the horns from the horn pad. Do the horns operate properly? |
Go to Step 5 | Go to Horns Inoperative |
| 5 | 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 |
| 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 |
| 7 | Replace the BCM. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
Go to Step 8 | - |
| 8 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |