Operation CHARM: Car repair manuals for everyone.

Content Theft Deterrent Functions

RPO Codes:





The Content Theft Deterrent System is controlled through the Body Control Module (BCM). The Content Theft Deterrent System comes with the BCM type 4. In order to check the BCM in the vehicle use the following procedure:
^ Pull the BCM PRGRM Fuse.
^ Turn the Ignition Switch to "ACCESSORY."

The Seat Belt Indicator and Chime will activate (flash and chime) 2-4 times indicating which type of BCM is in the vehicle. Check that the BCM in the vehicle is compatible with all of the features on the vehicle. If not place the proper BCM in the vehicle.

Content Theft Deterrent
Activation of the vehicle Horn and Park Lamps will occur when any door is opened while the Content Theft Deterrent System is armed. Activation of the vehicle Horn and Park Lamps will also occur when the vehicle is impacted while the Content Theft Deterrent System is armed. A Security Indicator Lamp will flash continuously while the Content Theft Deterrent System is armed.

Arming
The Content Theft Deterrent System is armed using either the Door Lock Switches or the "LOCK" button on the RKE Transmitter. The Ignition Switch must be in the "LOCK" position and the ignition key must be removed from the Ignition Lock Cylinder while a lock operation occurs in order for the vehicle to arm. The inside Door Lock Switches will only arm the Content Theft Deterrent System if pressed while the driver door is open. The Security Indicator Lamp flashes while the driver door is open and is lit continuously while the driver door is closed during the arming cycle.

Arming Verification
Remote Lock Verification will occur at the end of the arming cycle to provide confirmation that the vehicle has armed. The Security Indicator Lamp will flash infrequently to indicate the vehicle is armed.

Disarming
The Content Theft Deterrent System can be disarmed using any Door Lock Cylinder Switch to unlock the vehicle or by pressing the "UNLOCK" button on the RKE Transmitter.

Alarm
The Content Theft Deterrent System will alarm if any door is opened, the Ignition Switch is turned to the "RUN" position or if an impact to the vehicle occurs in excess of the precalibrated level of shock necessary for glass breakage. The alarm consists of 2 minutes of Park Lamps flashing and intermittent Horn activation.

Warnaway
The Content Theft Deterrent System will provide a 5 second alarm if an impact to the vehicle occurs in excess of the precalibrated level of shock. The alarm consists of 5 seconds of Park Lamps flashing and intermittent Horn activation.

Nuisance Alarms
Nuisance alarms are alarms that go off for no particular reason. A lot of the nuisance alarms are usually created by the environment in which a person lives in. If a person lives near a railroad track the vibration from the railroad track may cause the vehicle to alarm. Weather can also play a factor in setting off the vehicles alarm system. Loud bursts of thunder may cause the alarm to go off.

Theft Deterrent System: Content Theft
Another possible problem for nuisance alarms could be the mounting of the Theft Deterrent Shock Sensor. If this is not mounted properly. the sensor could be loose and cause the alarm to go off. The Theft Deterrent Shock Sensor could be too sensitive, which could cause the alarm to go off. If you get a vehicle in with a nuisance alarm problem refer to Chart #12 in this section and follow the procedures closely. This chart may not fix the problem the first time, but it will narrow down the possible problems with nuisance alarms.

When the vehicle comes in for the first time you should follow chart #12. The problem you will most likely have is a shock sensor that is too sensitive. At the end of chart #12 it calls for the technician to disable the shock sensor. This is something the customer might not want the technician to do but in doing this, if the vehicle is brought in again for nuisance alarms this will eliminate the shock sensor as a possible failure. If the customer insists on leaving the shock sensor enabled you can adjust the sensitivity of the shock sensor, but this will not guarantee that the nuisance alarms will go away. If the vehicle is brought in a second time for nuisance alarm, double check the door jamb switches again. Check the doors mechanically for proper fit and enter BCM diagnostics to check if the BCM is recognizing doors that open and doors that close. If the vehicle comes in a third time for nuisance alarms check for all items described in Chart #12. If you find every thing is working fine replace the BCM.

Shock Sensor Adjustment
1. Remove the left instrument panel sound insulator. Refer to Instrument Panel Gauges and Warning indicators.
2. Rotate the shock sensor adjustment knob counterclockwise to decrease the "warnaway" or short alarm sensitivity level. Rotate the shock sensor adjustment knob clockwise to increase the "warnaway" or short alarm sensitivity level.
3. Rotate the shock sensor adjustment knob in 30° increments, then test the sensitivity level by entering BCM diagnostics and simulating a small impact to the outside of the vehicle. A chime should be heard if the BCM receives a ground signal from the Theft Deterrent Shock Sensor.

NOTE: When choosing to simulate a small impact to the outside of the vehicle, choose an area of the vehicle that will not sustain any damage when it is struck.

4. Repeat step 3 until the required sensitivity level is reached.
5. Install the left instrument panel sound insulator.

Fuel Enable Control
A fuel enable signal to the vehicle Powertrain Control Module will only be provided while the Content Theft Deterrent System is disarmed.