GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 XLR 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Step

Action

Yes

No

Schematic Reference: Theft Deterrent System Schematics

Connector End View Reference: Theft Deterrent System Connector End Views

DEFINITION: The lights do not flash when the CTD system is in alarm mode.

1

Did you perform the Vehicle Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Perform the following to activate the CTD alarm mode:

    • Open the drivers window.
    • Close all doors.
    • Lock the vehicle and arm the CTD system using the power door lock switch or the keyless entry transmitter.
    • Wait for the SECURITY indicator to turn off.
    • Keeping the fob out of range of the vehicle, reach in and pull the manual release lever for the drivers door.
    • Open the drivers door.

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

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Are only the parking lamps inoperative?

Go to Park Lamps Inoperative in Lighting Systems

Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative