Theft Deterrent System Buick Rendezvous I

Scheme 115

Scheme 116

Scheme 117

Scheme 118

Scheme 119

Scheme 120

Lock Cylinder Switch Connector End View - Endgate

Lock Cylinder Switch Connector End - Endgate (Pontiac) Connector Part Information 15354699 2-Way M Metri-Pack 150 Series (WHT) Pin Wire Color Circuit No. Function A PPL 9124 Tailgate Key Cylinder Switch Signal B BLK 450 Ground

Theft Deterrent Control Module Connector End View

Theft Deterrent Control Module Connector End Connector Part Information 12064762 6-Way F Metri-Pack 150 Series (GRY) Pin Wire Color Circuit No. Function A ORN 2340 Battery Positive Voltage B BLK 1550 Ground C - - Not Used D PPL 1807 Class 2 Serial Data E PPL 1500 Ignition 0 Voltage F - - Not Used

Diagnostic Starting Point - Theft Deterrent

Begin the system diagnosis with the Diagnostic System Check - Theft Deterrent . The Diagnostic System Check will provide the following information

1. The identification of the control module(s) which command the system
2. The ability of the control module(s) to communicate through the serial data circuit
3. The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 2: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
2. 4: The symptoms list in Symptoms will determine the correct diagnostic procedure to use.
3. 5: The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
4. 7: The presence of DTC B1007 or B1009 indicates an internal module fault.
5. 8: The presence of DTC B1327, B1328, P0560 or P0620 indicates a battery voltage low/high condition.

Diagnostic System Check - Theft Deterrent

Scan Tool Output Controls

Scan Tool Output Controls

Scan Tool Data List

Body Control Module (BCM) Scan Tool Data List

Powertrain Control Module (PCM) Scan Tool Data List

Vehicle Theft Deterrent Scan Tool Data List

Diagnostic Trouble Code (DTC) List

Diagnostic Trouble Code (DTC) List

Circuit Description

When an ignition key is inserted into the ignition lock cylinder, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the theft deterrent control module. The theft deterrent control module then compares this value to a value stored in memory (learned key code). If the value is correct the theft deterrent control module sends the enable password via the serial data circuit to the powertrain control module (PCM).

Conditions for Running the DTC

The ignition switch must be ON. The theft deterrent control module cannot have DTC B1327 set as a current DTC.

Conditions for Setting the DTC

If the transponder value from the ignition key does not match the one stored in memory, the theft deterrent control module sets this DTC. This DTC indicates the use of a key with a transponder value that has not been learned by the theft deterrent control module. The vehicle theft deterrent (VTD) system considers this to be a theft attempt.

Action Taken When the DTC Sets

1. The theft deterrent control module sends a fuel disable message to the PCM via the serial data circuit.
2. The vehicle will not start.
3. The theft deterrent control module sends a message to the instrument cluster to flash the SECURITY indicator via the serial data circuit.

Conditions for Clearing the MIL/DTC

1. The theft deterrent control module clears the current status of the DTC when it senses a valid, memorized, transponder value from the ignition key.
2. The DTC can be cleared by using a scan tool.

The numbers below refer to the step numbers on the diagnostic table.

1. 2: Verifies the condition for setting DTC B2960 is current.
2. 4: The only method to determine which re-learn procedure to perform.
3. 5: To set this code, a key with a working transponder that is not learned was read by the theft deterrent control module. For that key to operate the vehicle and one or more learned keys are available, perform the Adding Keys procedure.
4. 6: To set this code, a key with a working transponder that is not learned was read by the theft deterrent control module. For that key to operate the vehicle and there is only one key available, a 10 Minute or 30 Minute Re-Learn Procedure must be performed.

DTC B2960

The theft deterrent control module checks memory to see if the Learn Coded Key setting is on. If so, the theft deterrent control module sets this DTC.

The ignition switch must be ON. The theft deterrent control module cannot have DTC B1327 set as a current DTC.

If the Learn Coded Key setting is on, the theft deterrent control module sets this DTC.

The theft deterrent control module will learn the key code. The security indicator will be illuminated for this DTC.

The theft deterrent control module clears the current status of the DTC when it does not see the Learn Coded Key setting as on. The DTC will still be retrieved as current until the ignition switch is cycled. The DTC will become a history DTC at that time.

The number below refers to the step number on the diagnostic table.

1. 2: To set this code, a key with a working transponder was read by the theft deterrent control module. For that key to operate the vehicle a 10 minute or 30 minute Re-Learn Procedure must be performed.

DTC B3031

When an ignition key is inserted into the ignition lock cylinder, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the theft deterrent control module. The theft deterrent control module then compares this value to a value stored in memory (learned key code). If the value is correct the theft deterrent control module sends the enable password via the serial data circuit to the powertrain control module (PCM).

The ignition switch must be ON. The theft deterrent control module cannot have DTC B1327 set as a current DTC.

Condition for Setting the DTC

The theft deterrent control module is unable to measure the ignition key transponder value. This may be due to a damaged or missing transponder, a non Passkey III (PK3) key, or a damaged exciter.

1. The theft deterrent control module sends a class 2 message containing a disable password to the powertrain control module (PCM).
2. The vehicle will not start.
3. The theft deterrent control module sends a class 2 message to the instrument cluster to illuminate the SECURITY indicator on steady.

1. The theft deterrent control module clears the current status of the DTC when it senses a valid, memorized, transponder value from the ignition key.
2. The DTC can be cleared by using a scan tool.

The numbers below refer to the step numbers on the diagnostic table

1. 2: Verifies the condition for setting DTC B3055 is current.
2. 3: The key must be a Passkey III (PK3) transponder key with an operating transponder for the system to work.
3. 4: The only method to confirm whether the transponder in the key or the theft deterrent control module is malfunctioning is to try a alternative component in the system. The vehicle was delivered with 2 keys.
4. 5: The possibility is unlikely that more than one key will be defective. If all keys do not work, the theft deterrent control module must be malfunctioning.
5. 6: If the vehicle has a malfunctioning theft deterrent control module that malfunctioned during an ignition cycle, the system will be "fail enabled" and the vehicle will start for all keys.
6. 7: If a new key must be tried, the key must have the proper mechanical cut and the theft deterrent control module must "learn" the transponder value.
7. 8: If only one key was available for the vehicle and the replacement key does not work, the theft deterrent control module must be malfunctioning.

DTC B3055

The theft deterrent control module produces the theft deterrent fuel enable signal when ignition is ON and the proper transponder key value is detected. The powertrain control module (PCM) monitors the fuel enable signal during crank. If the proper signal is present on the Serial Data Circuit, the PCM enables the fuel delivery in order to allow the engine to start. If the PCM determines that the fuel enable signal is not present or incorrect while the engine is running the PCM will enter a fail enable state. The engine will not stall or stop running. If the PCM is fail enable the Pass Key III system is NOT active and the engine will start. Refer to Vehicle Theft Deterrent (VTD) Description and Operation .

The ignition is ON.

The PCM has either lost or not received the password from the theft deterrent control module.

Actions Taken When the DTC Sets

1. The vehicle will not start.
2. The powertrain control module sends a serial data message to the IPC to illuminate the SECURITY indicator.
3. The PCM will not illuminate the malfunction indicator lamp (MIL).
4. The PCM will store conditions which were present when the DTC set as failure records data only. This information will not be stored as freeze frame data.

1. A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
2. The DTC can be cleared by using a scan tool.

Diagnostic Aids

Refer to Testing for Intermittent Conditions and Poor Connections and Testing for Electrical Intermittents in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 2: To set this code, the password that the PCM has learned does not agree with the password being received from the theft deterrent control module. This condition can occur if the theft deterrent control module has been replaced and the programming theft deterrent system components procedure has not been performed.
2. 4: If the PCM resets the DTC after the programming theft deterrent system components procedure has been performed, the theft deterrent control module is malfunctioning.

DTC P1626

The theft deterrent control module sends the fuel enable password to the engine control module (ECM) via the serial data circuit. The ECM verifies the fuel enable password received matches the password stored in memory. If the fuel continue password is correct, the ECM enables the starting and fuel delivery systems. When replacing a ECM with a GM SPO replacement part, the new ECM will learn the incoming fuel enable password immediately upon receipt.

The ignition is ON.

The ECM has not received the fuel enable password from the theft deterrent control module within 1 second.

1. The vehicle will not start.
2. The instrument panel cluster (IPC) will illuminate the SECURITY indicator.
3. The ECM will not illuminate the malfunction indicator lamp (MIL).

1. A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
2. The DTC can be cleared by using a scan tool.

A GM SPO replacement ECM is in a functional state to learn the password from the theft deterrent control module. If the theft deterrent control module is replaced, the ECM must be placed in password learning mode to relearn the new password. Once learned, the password becomes permanent information that remains in the ECM. The loss of ECM battery or ignition voltage does not affect the programmed password information. Refer to Programming Theft Deterrent System Components .

The numbers below refer to the step numbers on the diagnostic table.

1. 2: Verifies if the condition for setting DTC B3060 is current.
2. 3: To set this code, the password that the ECM has learned does not agree with the password being received from the theft deterrent control module or the ECM did not received the password from the theft deterrent control module. This condition can occur if the theft deterrent control module has been replaced and the Programming Theft Deterrent System Components procedure has not been performed.
3. 5: If the ECM resets the DTC after the programming theft deterrent system components procedure has been performed, the theft deterrent control module is malfunctioning.

DTC P1629

The theft deterrent control module produces the theft deterrent fuel enable signal when ignition is ON and the proper transponder key value is detected. The powertrain control module (PCM) monitors the fuel enable signal during crank. If the proper signal is present on the Class 2 Serial Data Circuit, the PCM enables the fuel delivery in order to allow the engine to start. If the PCM is replaced, the replacement PCM should learn the password within a few seconds after the ignition is turned ON. DTC P1630 is an information code indicating that the PCM is ready to learn the theft deterrent password. The engine starts and continues to run with DTC P1630 set.

The ignition is ON.

The powertrain control module (PCM) remains in theft deterrent password learn mode for more than 2 seconds.

1. The powertrain control module sends a serial data message to the IPC to illuminate the SECURITY indicator.
2. The PCM will not illuminate the malfunction indicator lamp (MIL).
3. The PCM will store conditions which were present when the DTC set as failure records data only. This information will not be stored as freeze frame data.

1. A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
2. The DTC can be cleared by using a scan tool.

A replacement powertrain control module (PCM) is in a functional state to learn the password from the theft deterrent control module. If the theft deterrent control module is replaced, the PCM must be placed in password learning mode to relearn the new password. Once learned, the password becomes permanent information that remains with the vehicle. The loss of PCM battery or ignition voltage does not affect the programmed password information. Refer to Programming Theft Deterrent System Components .

DTC P1630

The theft deterrent control module produces the theft deterrent fuel and starter enable signal when ignition is ON and the proper transponder key value is detected. The powertrain control module (PCM) monitors the fuel and starter enable signal during crank. If the proper signal is present on the Class 2 Serial Data Circuit, the PCM enables the fuel delivery and starter operation in order to allow the engine to start. If the PCM detects an incorrect password, vehicle theft deterrent (VTD) system failure or attempted vehicle theft, DTC P1631 is set. The engine will not start or crank as long as the condition is present.

The ignition is ON.

The powertrain control module (PCM) detects an incorrect password from the theft deterrent control module.

1. The vehicle will not start.
2. The powertrain control module sends a serial data message to the IPC to illuminate the SECURITY indicator.
3. The PCM will not illuminate the malfunction indicator lamp (MIL).
4. The PCM will store conditions which were present when the DTC set as failure records data only. This information will not be stored as freeze frame data.

1. A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
2. The DTC can be cleared by using a scan tool.

DTC P1631 indicates that the PCM has detected an incorrect password from the theft deterrent control module. This condition can occur if an incorrect key is being used when attempting to start the vehicle or if the theft deterrent control module has been replaced and the PCMs password learn function has not been enabled.

The numbers below refer to the step numbers on the diagnostic table.

1. 2: Verifies if the condition for setting DTC B2960 is present.
2. 3: To set this code, the password that the PCM has learned does not agree with the password being received from the theft deterrent control module. This condition can occur if the theft deterrent control module has been replaced and the programming theft deterrent system components procedure has not been performed.
3. 5: If the PCM resets the DTC after the programming theft deterrent system components procedure has been performed, the theft deterrent control module is malfunctioning.

DTC P1631

Symptoms - Theft Deterrent

1. Perform «Diagnostic System Check - Theft Deterrent»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system) in order to verify that all of the following are true: There are no DTCs set. The control module(s) can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following: «Theft Systems Description and Operation»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__theft-systems-description-and-operation) «Content Theft Deterrent (CTD) Description and Operation»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__content-theft-deterrent-ctd-description-and) «Vehicle Theft Deterrent (VTD) Description and Operation»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__vehicle-theft-deterrent-vtd-description-and)

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the Theft Deterrent System. Refer to «Checking Aftermarket Accessories»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__checking-aftermarket-accessories) in Wiring Systems.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
3. Ensure that the ignition key is a Pass Key III® key. Pass Key III® keys are identified by 'PK3' stamped into the steel shank of the key.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Content Theft Deterrent (CTD) Alarm Mode Inoperative»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__content-theft-deterrent-ctd-alarm-mode)
2. «Content Theft Deterrent (CTD) Does Not Disarm with Key Lock»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__content-theft-deterrent-ctd-does-not)
3. «Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__horn-inoperative-in-content-theft-deterrent)
4. «Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__lights-inoperative-in-content-theft-deterrent)
5. «Security Indicator LED Inoperative»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__security-indicator-led-inoperative)

Content Theft Deterrent (CTD) Alarm Mode Inoperative

Content Theft Deterrent (CTD) Alarm Mode Inoperative

Content Theft Deterrent (CTD) Does Not Disarm with Key Lock

Content Theft Deterrent (CTD) Does Not Disarm with Key Lock

Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

Security Indicator LED Inoperative

Security Indicator LED Inoperative

Scheme 121

1. Disable the SIR. Refer to «SIR Disabling and Enabling Zone 3»(/buick/rendezvous/i-2001-2007/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the trim covers. Refer to «Steering Column Trim Covers Replacement»(/buick/rendezvous/i-2001-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
3. Remove the theft deterrent module wiring harness from the steering column harness.
4. Disconnect the electrical connector.
5. Pull the theft deterrent module (2) away from the lock cylinder housing (1).

Installation Procedure

1. Push the theft deterrent module (2), onto the lock cylinder housing (1).
2. Install the theft deterrent wiring harness to the steering column harness.
3. Connect the electrical connector.
4. Replace the steering column trim covers. Refer to «Steering Column Trim Covers Replacement»(/buick/rendezvous/i-2001-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
5. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/rendezvous/i-2001-2007/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
6. Program the new theft control module. Refer to «Programming Theft Deterrent System Components»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system)

Removal Procedure

1. Remove the instrument panel upper trim. Refer to «Trim Pad Replacement - Instrument Panel (I/P) Upper (Aztek)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) or «Trim Pad Replacement - Instrument Panel (I/P) Upper (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
2. Remove the security indicator lamp (3) from the instrument panel upper trim: Rotate the lamp counterclockwise to approximately 1/4 turn. Pull the lamp out.
3. Disconnect the security indicator lamp electrical connector from the security indicator lamp.

1. Connect the security indicator lamp electrical connector to the security indicator lamp.
2. Install the security indicator lamp (3) to the instrument panel upper trim: Insert the lamp. Rotate the lamp clockwise to approximately 1/4 turn.
3. Install the instrument panel upper trim. Refer to «Trim Pad Replacement - Instrument Panel (I/P) Upper (Aztek)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) or «Trim Pad Replacement - Instrument Panel (I/P) Upper (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.

Replacing Keys

When the correct number of learned master keys are not available to perform adding keys procedure the 10 minute re-learn procedure or 30 minute re-learn procedure must be performed. Refer to Programming Theft Deterrent System Components .

Adding Keys (Domestic)

1. With a previously learned master key, turn ON the ignition, with the engine OFF.
2. Turn OFF the ignition and remove the key.
3. Within 10 seconds insert the key to be learned. Turn ON the ignition with the engine OFF. The vehicle has now learned the new key.

Adding Keys (Export - Including Canada)

1. With a previously learned master key, turn ON the ignition with the engine OFF.
2. Turn OFF the ignition and remove the key.
3. Within 10 seconds insert a second previously learned master key. Turn ON the ignition with the engine OFF.
4. Turn OFF the ignition and remove the key.
5. Within 10 seconds insert the key to be learned. Turn ON the ignition with the engine OFF. The vehicle has now learned the new key.

Tools Required

Scan tool

Set Up a New Theft Deterrent Control Module

Use this procedure only if replacing the theft deterrent control module with an GM SPO Replacement Part.

1. Connect a scan tool to the vehicle.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, select Setup New VTD Module in the Vehicle Theft Deterrent, Special Functions data list.
4. Follow the scan tool on-screen instructions.

10-Minute Relearn Procedure

Tools Required

1. Scan tool
2. Techline Terminal with current Service Programing System (SPS) software

Use this procedure after replacing the following components

1. The passkey III (PK3) keys
2. The theft deterrent control module
3. The PCM, see Important above

1. Connect a scan tool to the vehicle.
2. Turn ON the ignition, with the engine OFF.
3. Insure that all power consuming devices are turned OFF on the vehicle.
4. With a scan tool, select Request Info. under Service Programming System and follow the scan tool on-screen instructions.
5. Disconnect the scan tool from the vehicle and connect the scan tool to a Techline Terminal with the current Service Programming System (SPS) software.
6. On the Techline Terminal, select Service Programming System and follow the Techline Terminal on-screen instructions.
7. Disconnect the scan tool from the Techline Terminal and re-connect the scan tool to the vehicle.
8. With a master passkey III key, turn ON the ignition with the engine OFF.
9. With a scan tool, select Program ECU under Service Programming System.
10. At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure. IMPORTANT: On some vehicles the SECURITY telltale maybe illuminated on steady for the duration of the 10-minute relearn procedure.
11. Observe the scan tool, after approximately 10 minutes the scan tool will display "Programming Successful, Turn OFF Ignition". The vehicle is now ready to relearn the key information and/or the passwords on the next ignition switch transition from OFF to ON.
12. Turn OFF the ignition and wait 5 seconds.
13. With a master Passkey III key, start the vehicle. The theft deterrent control module has now learned the key transponder information and the PCM has now learned the fuel continue password. IMPORTANT: Perform this step ONLY on vehicles with EXPORT configured theft deterrent control modules.
14. Turn OFF the ignition and wait 15 seconds minimum. IMPORTANT: Perform this step ONLY on vehicles with EXPORT configured theft deterrent control modules.
15. With a second master passkey III key, start the vehicle. The theft deterrent control module has now learned the second master Passkey III key transponder information
16. With a scan tool, clear any DTCs.

30-Minute Relearn Procedure

Use this procedure after replacing the following components

1. The passkey III (PK3) keys
2. The theft deterrent control module
3. The PCM, see important above

1. With a master passkey III key (Black), turn ON the ignition, with the engine OFF.
2. Observe the Security telltale, after approximately 10 minutes the telltale will turn off.
3. Turn OFF the ignition, and wait 5 seconds.
4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes. IMPORTANT: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
5. With a master passkey III key, start the vehicle. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.
6. With a scan tool, clear any DTCs.

Theft Systems Description and Operation

The theft deterrent system on this vehicle is comprised of two separate systems, the vehicle theft deterrent (VTD) system and the optional content theft deterrent (CTD) system. VTD, prevents drive away theft by keeping the vehicle from starting. CTD is the vehicle alarm system which discourages unauthorized entry into the vehicle. These systems are described and diagnosed separately within this section.

SECURITY

The IPC illuminates the SECURITY indicator in the message center as determined by the Vehicle Theft Deterrent (VTD) system. The IPC receives a class 2 message from the theft deterrent controller module requesting illumination.

1. The VTD system requests the IPC to illuminate the indicator only when the ignition switch is ON. The VTD system uses the indicator as a malfunction indicator.
2. The Content Theft Deterrent (CTD) system uses the theft LED and does not use the SECURITY indicator.

Theft LED

The body control module (BCM) illuminates the theft LED (on top of the dash) based on the current Content Theft Deterrent (CTD) system operation mode. The theft LED operates in the following modes

1. ON
2. OFF
3. Flashing slow
4. Flashing fast

Keyless Entry System (w/AU0)

The keyless entry system functions interact with the content theft deterrent system but is diagnosed as a stand-alone system. Refer to Keyless Entry System Description and Operation in Keyless Entry.

Radio with Theftlock

The theft deterrent system does not interact with radio theft lock equipped vehicles. Radio theft lock is diagnosed as a stand-alone system. Refer to Radio/Audio System Description and Operation in Entertainment.

CTD/VTD Description and Operation

1. For content theft Deterrent (CTD) information, refer to «Content Theft Deterrent (CTD) Description and Operation»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__content-theft-deterrent-ctd-description-and) .
2. For vehicle theft deterrent (VTD) information, refer to «Vehicle Theft Deterrent (VTD) Description and Operation»(/buick/rendezvous/i-2001-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__vehicle-theft-deterrent-vtd-description-and) .

Content Theft Deterrent (CTD) Description and Operation

The CTD system (when armed) is designed to deter vehicle content theft by pulsing the horns and exterior lamps for approximately 30 seconds when an unauthorized vehicle entry is detected. However, the CTD system does not affect engine starting.

An unauthorized entry can be any of the following with the CTD system armed

1. Forced entry into the passenger compartment.
2. When any door is opened without being unlocked by using the key to unlock either of the front doors or the UNLOCK command from a Keyless Entry Transmitter.
3. Forced entry into the rear compartment.

The components of the system are

1. Remote Control Door Lock Receiver (RCDLR)
2. Door Jamb Switches
3. Body Control Module
4. Front Door Lock Cylinder Switches
5. Liftgate Key Cylinder Unlock Switch, if equipped
6. Lift Glass Ajar Switches, if equipped
7. Power Door Lock Switches

Arming the CTD System

Use the following procedure in order to arm the system

1. Place the shift lever in P (park).
2. Turn OFF the ignition.
3. Open any door. IMPORTANT: The system is not armed if the doors are locked manually, the power door lock switch or remote keyless entry transmitter must be used to arm the CTD system.
4. Lock the doors with the power door lock switch or the LOCK button on the transmitter. The system is in standby mode and will not start the arming timer until all doors are closed.
5. The system will arm approximately 30 seconds from the time that the last door is closed. This delay is shown by the theft LED indicator ON STEADY. When the indicator transitions to flashing slowly the system is ARMED.

Locking The Vehicle Without Arming The CTD System

Locking the vehicle may be accomplished without arming the CTD system. Use of the manual door locks or using the key to lock the doors will lock the vehicle but will not arm the CTD system.

Disarming an armed system/silencing an alarm

If system arming has been requested by the power door lock switch or the keyless entry transmitter, it must be disarmed.

1. To disarm the CTD system in standby mode (theft LED flashing fast and door(s) open), perform one of the following: Press either power door unlock switch. Use the key to unlock either front door. Press the UNLOCK button on the keyless entry transmitter. Insert a valid key into the ignition and switch to the ON position.
2. To disarm the CTD system in the armed mode: Use the key to unlock the either front door. Press the UNLOCK button on the keyless entry transmitter. Insert a valid key into the ignition and switch to the ON position
3. To disarm the CTD system when activated (alarming mode). Use the key to unlock either front door. Press the UNLOCK button on the keyless entry transmitter. Insert a valid key into the ignition and switch to the ON position.

CTD Circuit Description

The following is a description of each component used in the CTD system

Remote Control Door Lock Receiver (RCDLR)

The keyless entry system can arm and disarm the CTD system. When the keyless entry module receives a door lock or unlock signal from the transmitter, the keyless entry module sends a message to the BCM on the keyless entry serial data link to perform the appropriate arm/disarm functions.

Door Jamb Switches

The front door lock cylinder switches are internally integrated within the door lock assemblies. The body control module (BCM) monitors all door jamb switches via a discrete input from each door jamb switch, including the rear door(s). If the BCM receives a ground signal from a door jamb switch when the CTD system is armed, the BCM activates the alarm.

Body Control Module (BCM)

The CTD system is an internal function of the Body Control Module (BCM) which utilizes class 2 serial data and various switch input information to perform CTD functions. When the BCM detects an unauthorized entry, it activates the horns and exterior lamps. The BCM has five basic modes (disarmed, standby, delayed, armed, and alarm) for operating the CTD system. The different modes are described below.

1. The BCM has the CTD system in a disarmed mode until the following conditions are detected: Ignition key turned to the OFF position. Any door open. Doors locked by either the power door lock switch or the LOCK button on the transmitter.
2. The BCM enters the standby mode when the above conditions are detected. In standby mode, the BCM commands the theft LED to flash quickly. If all the doors are closed and the LOCK button on the transmitter is used, the BCM enters the delayed mode.
3. When the last door is closed, the BCM enters the delayed mode for 30 seconds. In delayed mode the BCM commands the theft LED to illuminate ON steady.
4. After 30 seconds, the BCM enters the armed mode. In armed mode, the BCM commands the theft LED to flash slowly. Any forced entry activates the alarm mode.
5. When the BCM detects a forced entry, the BCM enters the alarm mode. The BCM activates the horns and exterior lamps for 30 seconds. This is followed by a three minute time-out with the horn no longer active. If no new intrusions are detected after the time-out, the horn is not active. The system must be disarmed or the intrusion condition removed after the time-out for the system to exit alarm mode.
6. There is an arm simulate mode that occurs when the LED will flash continuously after 60 seconds when a the last door is closed without an arming CTD request.

Front Door Lock Cylinder Switches

The front door lock cylinder switches are internally integrated within the door lock assemblies. The front door lock cylinder switches use a discrete input to the BCM. The BCM utilizes each of these inputs to disarm the CTD system. Inserting a key and turning to the unlock position will disarm the CTD system.

Liftgate Key Cylinder Unlock Switch

If equipped, the liftgate key cylinder unlock switch uses a discrete input to the BCM. The BCM utilizes this input to enable access into the rear compartment area without causing the alarm to sound. The CTD system remains armed until one of the disarm procedures are performed.

Lift Glass Ajar Switches

If equipped, the lift glass ajar switches use a discrete input to the BCM. The BCM utilizes these inputs from each lift glass ajar switch. If the BCM receives a ground signal from a lift glass ajar switch when the CTD system is armed, the BCM activates the alarm.

Power Door Lock Switches

The power door lock switches are used to either arm or disarm the CTD system. Pressing the lock position will cause the CTD to arm after all doors are closed and the 30 second delay period has elapsed. Pressing the unlock position when the CTD system is in the standby mode will disarm the system. When the CTD system has entered into the armed mode the power door lock switches are inactive and cannot unlock the doors or disarm the CTD system.

Important

The CTD system can be armed with the windows or sunroof open.

Inputs

The BCM monitors the following inputs

1. Driver and passenger door jamb switches.
2. Driver and passenger power door lock/unlock switches.
3. Front door lock cylinder disarm switches.
4. Liftgate key cylinder unlock switch, if equipped.
5. Transmitter LOCK/UNLOCK buttons, class 2 message from the Remote Keyless Entry (RKE) Module.

Outputs

The BCM controls the following

1. The horn relay
2. The exterior lights

Vehicle Theft Deterrent (VTD) Description and Operation

The vehicle theft deterrent (VTD) system functions are provided by the theft deterrent control module. The VTD system prevents vehicle operation if a valid (learned) transponder PASS-Key®III (PK3) ignition key is not used to start the vehicle. The theft deterrent control module has an exciter that is part of the theft deterrent control module as an assembly. The PK3 key has a transponder embedded in the plastic head of the key. The exciter is an antenna which is made up of wire coils which surround the ignition lock cylinder. The PCM enables the engines starter and fuel delivery system when it receives a valid (learned) password from the theft deterrent control module via the class 2 serial data circuit. The components of the VTD system are as follows

1. Theft deterrent control module
2. Powertrain control module (PCM)
3. Ignition key (Transponder)
4. Ignition lock cylinder
5. Security indicator

Theft Deterrent Control Module

Vehicles with steering column mounted ignition switches have the exciter integral with the theft deterrent control module which is located within the steering column. Vehicles with instrument panel mounted ignition switches have exciter modules separate from the theft deterrent control module with the vehicle wiring harness connecting the two. The theft deterrent control module for vehicles with instrument panel mounted ignition switches is located within the instrument panel. The theft deterrent control module can learn up to ten keys (transponder values).

The theft deterrent control module uses the following inputs, battery voltage, ignition switched voltage and ground circuit. The theft deterrent control module uses the following outputs, password exchange with the powertrain control module (PCM) via class 2 serial data circuit.

When an ignition key is inserted into the ignition lock cylinder, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its value, which is received by the theft deterrent control module. The theft deterrent control module then compares this value to a value stored in memory and performs one of the following functions

1. If the transponder value is correct, the theft deterrent control module sends a class 2 message containing the modules enable password to the PCM.
2. If the transponder value is incorrect, the theft deterrent control module sends a class 2 message containing a disable password to the PCM.
3. If the theft deterrent control module is unable to measure the ignition key transponder value for one second, due to a damaged or missing pellet or a damaged exciter, it sends a class 2 message containing a disable password to the PCM. IMPORTANT: If the PCM is unable to communicate with the theft deterrent control module (loss of class 2 state of health) after the vehicle has started, the module will consider itself malfunctioning and enter a fail enable state and illuminate the Security Indicator. The vehicle will not stall or stop running. If the PCM is in a fail enable state when the ignition is turned to OFF, it will remain fail enabled until the next time the vehicle is started. If the PCM is fail enabled the theft deterrent system is NOT active and the vehicle will start. The PCM will remain fail enabled until class 2 communication with the theft deterrent control module is restored.

Powertrain Control Module (PCM)

The powertrain control module (PCM) verifies that the password received from the theft deterrent control module via the class 2 serial data circuit is correct. The PCM can learn only one enable password. If the enable password is correct, the PCM enables the starter and fuel delivery systems.

The PCM disables the starter and fuel delivery systems if any of the following conditions occur

1. The enable password is incorrect.
2. The system disable password is sent by the theft deterrent control module.
3. No passwords are received - there is no communication with the theft deterrent control module.

The Ignition Key (Transponder)

The ignition key for theft deterrent equipped vehicles is a typical looking ignition key with a transponder located in the plastic end of the key. The transponder value is fixed and unable to be changed. The theft deterrent system uses the ignition key transponder value to determine if a valid ignition key is being used to start the vehicle. There are approximately three trillion possible transponder values. There are no visible electrical contacts. The keys may be identified by the letters "PK3" stamped into the steel shank of the key. The theft deterrent systems use the following types of ignition keys

Master Keys

Master keys have a black plastic end for full access operation of the vehicle. Master keys may perform the following functions

1. Start the vehicle.
2. Lock/unlock all of the door locks.
3. Lock/unlock all of the storage compartments.

Valet Keys

Valet keys provide limited access to the vehicle and vehicle functions. Valet keys may perform the following functions

1. Start the vehicle.
2. Lock/unlock all of the door locks.

Ignition Lock Cylinder

The ignition lock cylinder performs all of the functions of a lock cylinder on a non theft deterrent equipped vehicle. The ignition lock cylinder for vehicles with theft deterrent may be located on the steering column or on the instrument panel. In either location the exciter coils surround the ignition lock cylinder such that they are very close to the head of the key which contains the transponder pellet.

If an ignition lock cylinder is replaced, new transponder keys must be cut to match the mechanical coding of the new lock cylinder. The new keys must be learned by the theft deterrent controller module. When replacing an ignition lock cylinder, refer to Programming Theft Deterrent System Components .

SECURITY Indicator Operation

The instrument panel cluster (IPC) illuminates the SECURITY indicator in the message center as determined by the vehicle theft deterrent (VTD) system. The IPC receives a class 2 message from the theft deterrent control module requesting illumination. The theft deterrent control module can command the IPC to illuminate the SECURITY indicator only when the ignition key is in the ON position. The security indicator is a malfunction indicator and does not illuminate during the bulb check when the ignition is turned to ON. If the PCM loses communication with the theft deterrent control module, the instrument cluster will also detect the loss of communication and will illuminate the SECURITY indicator. The SECURITY indicator can indicate both malfunctions (Indicator on steady) and tamper (Indicator flashing - indicating unauthorized operation). Under the following conditions the SECURITY indicator may be commanded to illuminate.

SECURITY Indicator Stays Illuminated and Engine Starts

If the theft deterrent control module was unable to measure the ignition key transponder value or the powertrain control module (PCM) lost communication with the theft deterrent control module while the engine was last running, the indicator will remain illuminated during subsequent ignition cycles. This is to remind the driver that the vehicle theft deterrent system will not be functioning until the problem is corrected. The vehicle is fail enabled and will start.

SECURITY Indicator Illuminates when Engine is Running

If the theft deterrent control module is unable to measure the ignition key transponder value or the PCM loses communication with the theft deterrent control module while the engine is running, the indicator will be illuminated. If the key is turned to OFF, the vehicle will be fail enabled and will start if the condition still exists at the next attempt to start the vehicle will remain fail enable.

SECURITY Indicator Illuminated and Engine Does Not Start

The theft deterrent control module or the PCM has detected a problem with the theft deterrent system. The theft deterrent control module is unable to measure the ignition key transponder value. The System is in Learn Mode, refer to Programming Theft Deterrent System Components .

SECURITY Indicator Flashes and Engine Does Not Start

The theft deterrent control module has measured an incorrect transponder value when the ignition key is turned to the ON position. The transponder has not been learned by the theft deterrent control module. This is considered a tamper condition by the theft deterrent control module.

See also:
• Scan Tool Does Not Power Up
• Power Mode Mismatch
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Diagnostic System Check - Engine Controls
• Testing for Intermittent Conditions and Poor Connections
• Testing for Electrical Intermittents
• Checking Aftermarket Accessories
• Courtesy Lamps Inoperative
• Power Door Locks Inoperative (Aztek)
• Power Door Locks Inoperative (Rendezvous)
• Courtesy Lamps Always On
• Circuit Testing
• Wiring Repairs
• Connector Repairs
• Lock Cylinder Replacement - Endgate
• Horns Inoperative
• Park Lamps Inoperative
• SIR Disabling and Enabling Zone 3
• Steering Column Trim Covers Replacement
• Trim Pad Replacement - Instrument Panel (I/P) Upper (Aztek)
• Keyless Entry System Description and Operation
• Radio/Audio System Description and Operation
• Diagnostic System Check - Theft Deterrent
• Symptoms - Theft Deterrent
• Diagnostic Trouble Code (DTC) List
• Content Theft Deterrent (CTD) Does Not Disarm with Key Lock
• Adding Keys (Domestic)
• Adding Keys (Export - Including Canada)
• Replacing Keys
• Vehicle Theft Deterrent (VTD) Description and Operation
• Theft Systems Description and Operation
• Content Theft Deterrent (CTD) Description and Operation
• Content Theft Deterrent (CTD) Alarm Mode Inoperative
• Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode
• Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode
• Security Indicator LED Inoperative