GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Corvette 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 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 Content Theft Deterrent (CTD) system does not arm, or does not alarm upon an unauthorized entry.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2
  1. Make sure the rear compartment lid is closed completely.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the Trunk Open message on the driver information center.

Does the driver information center display TRUNK OPEN?

Go to Symptoms - Body Rear End in Body Rear End

Go to Step 3

3
  1. Open the driver window.
  2. Unlock the doors.
  3. Turn the ignition OFF.
  4. Open the driver door.
  5. Observe the SECURITY indicator.

Does the SECURITY indicator flash?

Go to Step 5

Go to Step 4

4

Do the courtesy lamps operate properly?

Go to Security Indicator Inoperative

Go to Courtesy Lamps Inoperative in Lighting Systems

5
  1. Lock the vehicle using the power door lock switches or the keyless entry transmitter.
  2. Observe the SECURITY indicator.

Does the SECURITY indicator change from flashing to ON steady?

Go to Step 6

Go to Power Door Locks Inoperative - One Door or Switch in Doors

6
  1. Close all of the doors, the hood, and rear compartment lid.

    2. Important: Ensure that both of the doors, the hood, and the rear compartment lid are closed. The CTD system will not arm if both of the doors, the hood, and rear compartment lid are not closed.

  2. Observe the SECURITY indicator.

Does the SECURITY indicator turn off in about 30 seconds?

Go to Step 7

Go to Courtesy Lamps Always On in Lighting Systems

7
  1. Keeping the key fob out of range of the vehicle, reach in and pull the manual release lever for the drivers door.
  2. Open the driver door.

Do all of the Alarm mode functions activate - parking lights flash, horns pulse, and Theft Deterrent Alarm sounds?

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

Go to Step 8

8

Do the parking lights flash?

Go to Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Go to Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode