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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Theft Deterrent System) >> Diagnostic Information and Procedures >> Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
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 vehicle lights do not flash when the CTD system is in alarm mode.
1 Did you perform A Diagnostic System Check - Theft Deterrent? Go to Step 2  Go to Diagnostic System Check - Theft Deterrent 
2 Perform one of the following to activate the CTD alarm mode:
  • Operate the PANIC button on the keyless entry transmitter.
  • Complete the following steps:
    1. Open the driver's window.
    2. Lock the vehicle using the power door lock switch.
    3. Wait for the theft LED to transition from ON stedy to flashing slowly.
    4. Reach in and unlock the driver's door.
    5. Open the driver's door.

Do all of the alarm mode functions activate (headlamps flash and horn pulses)?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Are only the head lamps inoperative? Go to Headlamps Inoperative - Low Beams in Lighting Systems Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative