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

Content Theft Deterrent (CTD) Alarm Mode Inoperative w/o RPO UA2

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 Rear Hatch/Gate Ajar Indicator Always On in Body Rear End

Go to Step 3

3
  1. Open the driver's window.
  2. Unlock the doors.
  3. Turn the ignition OFF.
  4. Open the driver's 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 Content Theft Deterrent 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 driver's door.
  2. Open the driver's 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

Content Theft Deterrent (CTD) Alarm Mode Inoperative w/ RPO UA2

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 Rear Hatch/Gate Ajar Indicator Always On in Body Rear End

Go to Step 3

3
  1. Make sure the hood is completely closed.
  2. With a scan tool, observe the Hood Ajar Switch parameter in the Body Control Module (BCM) Inputs data list.

Does the scan tool indicate that the Hood Ajar Switch is ON?

Go to Step 4

Go to Step 7

4
  1. Turn the ignition OFF.
  2. Disconnect the hood ajar switch harness connector.
  3. Turn the ignition ON.
  4. With a scan tool, observe the Hood Ajar Switch parameter.

Does the scan tool indicate that the Hood Ajar Switch is ON?

Go to Step 16

Go to Step 5

5
  1. Connect a 5-amp fused jumper wire between the Hood Ajar Switch signal circuit and the ground circuit of the hood ajar switch at the hood ajar switch harness connector.
  2. Observe the Hood Ajar Switch parameter in the BCM Inputs data list.

Does the scan tool indicate that the Hood Ajar Switch parameter is ON?

Go to Step 19

Go to Step 6

6
  1. Connect a 5-amp fused jumper wire between the Hood Ajar Switch signal circuit and a good ground.
  2. Observe the Hood Ajar Switch parameter in the BCM Inputs data list.

Does the scan tool indicate that the Hood Ajar Switch parameter is ON?

Go to Step 18

Go to Step 17

7
  1. Open the driver's window.
  2. Unlock the doors.
  3. Turn the ignition OFF.
  4. Open the driver's door.
  5. Observe the SECURITY indicator.

Does the SECURITY indicator flash?

Go to Step 9

Go to Step 8

8

Do the courtesy lamps operate properly?

Go to Security Indicator Inoperative

Go to Courtesy Lamps Inoperative in Lighting Systems

9
  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 10

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

10
  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 Content Theft Deterrent System will not arm if both of the doors, the hood, and rear compartment lid are not closed.

    Important: If the vehicle is equipped with an intrusion sensor, ensure that the intrusion sensor is DISABLED before proceeding with this step.

  2. Observe the SECURITY indicator.

Does the SECURITY indicator turn off in about 30 seconds?

Go to Step 11

Go to Courtesy Lamps Always On in Lighting Systems

11
  1. Keeping the key fob out of range of the vehicle, reach in and pull the manual release lever for the driver's door.
  2. Open the driver's door.

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

Go to Step 12

Go to Step 13

12

Important: Ensure that the intrusion sensor is ENABLED before proceeding with this step.

  1. Re-arm the CTD system.
  2. After the CTD system is armed, reach into the vehicle through the open window, and wave your arm for several seconds.

Does the CTD alarm mode activate?

Go to Step 13

Go to Intrusion Sensor Inoperative

13

Do any of the alarm functions activate?

Go to Step 14

Go to Courtesy Lamps Inoperative in Lighting Systems

14

Does the Theft Deterrent Alarm sound?

Go to Step 15

Go to Theft Deterrent Alarm Inoperative

15

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

16

Test the Hood Ajar Switch signal circuit for a short to ground.

Did you find and correct the condition?

Go to Step 23

Go to Step 20

17

Test the Hood Ajar Switch signal circuit for a short to voltage or an open.

Did you find and correct the condition?

Go to Step 23

Go to Step 20

18

Repair the open in the Hood Ajar Switch ground circuit.

Did you complete the repair?

Go to Step 23

--

19

Inspect for loose or poor connections at the harness connector of the Hood Ajar Switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 21

20

Inspect for loose or poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 22

21

Replace the Hood Ajar Switch. Refer Hood Primary and Secondary Latch Replacement .

Did you complete the repair?

Go to Step 23

--

22

Replace the BCM. Refer to Body Control Module Replacement in Computer/Intergrating System.

Did you complete the repair?

Go to Step 23

--

23

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2