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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 990 (Theft Deterrent System) >> Diagnostic Information and Procedures >> Content Theft Deterrent (CTD) Alarm Mode Inoperative

Content Theft Deterrent (CTD) Alarm Mode Inoperative

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Content Theft Deterrent (CTD) Alarm Mode Inoperative

Step Action Yes No
Schematic Reference: Theft Deterrent System Schematics 
Connector End View Reference: Theft Deterrent System Connector End Views  
DEFINITION: The CTD system will not ARM or DISARM properly.
1 Did you perform A Diagnostic System Check - Theft Deterrent? Go to Step 2  Go to Diagnostic System Check - Theft Deterrent 
2
  1. Open the driver's window.
  2. Unlock the doors using the power door lock switch or the keyless entry transmitter.
  3. Remove the keys from the ignition.
  4. Open the driver's door.
  5. Observe the courtesy lamps.
Do the courtesy lamps illuminate? 		 Go to Step 3  Go to Courtesy Lamps Inoperative in Lighting Systems
3
  1. Open the driver's window.
  2. Unlock the doors using the power door lock switch or the keyless entry transmitter.
  3. Remove the keys from the ignition.
  4. Open the driver's door.
  5. Observe the SECURITY telltale.
Does the SECURITY telltale flash? 		 Go to Step 4  Go to Security Indicator Inoperative 
4
  1. Lock the vehicle using the power door lock switches or the keyless entry transmitter.
  2. Observe the SECURITY telltale.
Does the SECURITY telltale change from flashing to on steady?		 Go to Step 5  Go to Power Door Locks Inoperative (Front Door(s))Power Door Locks Inoperative (Rear Door(s)) in Doors
5
  1. Close all of the doors.
    IMPORTANT: Ensure that all the doors are closed. The content theft deterrent system will not arm itself without all of the doors being closed.
  2. Observe the SECURITY telltale.
Does the SECURITY telltale turn off in about 15 seconds?		 Go to Step 6  Go to Courtesy Lamps Always On in Lighting Systems
6
  1. Reach in and manually unlock the driver's door.
  2. Open the driver's door.
Do all of the alarm mode functions activate, parking lights flash and horn pulses?		 Go to Step 7  Go to Step 8 
7 Disarm the CTD system by inserting the door key into the driver or the passenger door lock cylinder and rotate the key to the unlock position.
Do all of the alarm mode functions stop?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Content Theft Deterrent (CTD) Does Not Disarm with Key Lock 
8 Do any of the alarm functions activate? Go to Step 9  Go to Courtesy Lamps Inoperative in Lighting Systems
9 Do the horns pulse only? Go to Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode  Go to Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode 
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