GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Grand Prix 🢒 Body and Accessories 🢒 Theft Deterrent 🢒 Content Theft Deterrent (CTD) Enters Alarm Modes Intermittent

Step

Action

Value(s)

Yes

No

The content theft deterrent system arm/disarm functions operate normally, but goes into alarm mode intermittently without an actual alarm input trigger.

1

Was the CTD System Check performed?

--

Go to Step 2

Go to Content Theft Deterrent (CTD) System Check

2

Was the BCM Diagnostic System Check performed?

--

Go to Step 3

Go to Diagnostic System Check - Body Control System in Body Control System

3

Inspect the sensitivity level of the shock sensor. Refer to Content Theft Deterrent (CTD) Circuit Description .

Is the shock sensor sensitivity OK?

--

Go to Step 4

Go to Step 8

4
  1. Turn the IP dimmer switch to the OFF position.
  2. Turn the ignition switch to the RUN position.
  3. Close all the vehicle doors.
  4. Observe the courtesy lights and tap gently on the inside door trim panels, near the door latches.

Are the courtesy lights off?

-

Go to Step 5

Go to Step 9

5
  1. Close the rear compartment lid and latch it.
  2. Observe the Driver Information Display (DID) or trip computer, if equipped and tap gently around the rear compartment lid near the latch.

Is the rear compartment lid ajar indicator off?

--

Go to Step 6

Go to Step 10

6
  1. Disconnect the shock sensor electrical connector.
  2. Disconnect the BCM connector C2.
  3. Use a DMM to measure the resistance between the BCM harness connector C2 terminal D14 and ground.

Is the resistance within the specified range?

OL (infinite)

Go to Step 11

Go to Step 7

7
  1. Leave the DMM connected.
  2. Disconnect the rear compartment lid lock electrical connector.
  3. Use the DMM to measure the resistance again.

Is the resistance within the specified range?

OL (infinite)

Go to Step 12

Go to Step 13

8

Adjust the shock sensor sensitivity.

Is the repair complete?

--

Go to Step 14

--

9

The content theft deterrent system is malfunctioning due to a malfunction between the BCM and the door lock ajar switches. Refer to Interior Lamps System Check in Lighting Systems.

Is the action complete?

--

Go to Step 14

--

10

The content theft deterrent system is malfunctioning due to a malfunction between the BCM and the rear compartment ajar switch. Refer to Diagnostic System Check - Driver Information Systems in Instrument Panel, Gages and Console.

Is the action complete?

--

--

Go to Step 14

--

11

Malfunction is not present at this time. Refer to Content Theft Deterrent (CTD) Circuit Description for further information.

Is the action complete?

--

Go to Step 14

--

12

Replace the rear compartment lid lock.

Is the repair complete?

--

Go to Step 14

--

13

Repair the short to ground in circuit 1828.

Is the repair complete?

--

Go to Step 14

--

14
  1. Turn the ignition switch to the OFF position.
  2. Reconnect the connectors/components removed.
  3. Turn the ignition switch to the RUN position for 6 seconds.
  4. Turn the ignition switch to the ACC position. The BCM flashes the fasten belts indicator and sounds the chime 4 times. This identifies the BCM type installed on the vehicle.
  5. Within 1 second, turn the ignition switch from the ACC position to the OFF position.
  6. Turn the ignition switch back to the ACC position. The BCM sounds any DTCs stored.

Are there any BCM DTCs present?

--

Go to Diagnostic System Check - Body Control System in Body Control System

Go to Content Theft Deterrent (CTD) System Check