Theft Deterrent System Cadillac CTS I

Scheme 36

Scheme 37

Scheme 38

Scheme 39

Hood Ajar Switch Terminal Identification (Export W/UA2) Connector Part Information 12052641 2-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A PK/BK 109 Hood Ajar Switch Signal B BK 250 Ground

Inclination Sensor Terminal Identification (Export W/UA2) Connector Part Information 15324229 4-Way F Metri-Pack 150 Packard (BK) Pin Wire Color Circuit No. Function 1 RD/WH 1240 Battery Positive Voltage 2 - - Not Used 3 L-BU 5362 Inclination Sensor Signal 4 PK 5363 Inclination Sensor Low Reference

Intrusion Sensor Terminal Identification (Export W/ UA2/UA6) Connector Part Information 15326747 3-Way F Micro-Pack (BK) Pin Wire Color Circuit No. Function A RD/WH 3640 Battery Positive Voltage B PU 5059 Intrusion Sensor Alarm On Signal C YE 5058 Intrusion Sensor Armed Signal

Theft Deterrent Alarm Terminal Identification (Export W/UA2) Connector Part Information 1-967640-1 4-Way F Weather Pack (BK) Pin Wire Color Circuit No. Function 1 PK 1339 Ignition 1 Voltage 2 RD/WH 1240 Battery Positive Voltage 3 WH 111 Theft Deterrent Alarm Enable Signal 4 BK 1050 Ground

Theft Deterrent Control Module Terminal Identification Connector Part Information 12064762 6-Way F Metri-Pack 150 Series (GY) Pin Wire Color Circuit No. Function A OG 1440 Battery Positive Voltage B BK/WH 351 Ground C - - Not Used D PU 1807 Class 2 Serial Data E YE 343 Accessory 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 serial data circuit or due to a total malfunction of the serial data circuit. The specified procedure will determine the particular condition.
2. 3: The symptoms list in Symptoms will determine the correct diagnostic procedure to use.
3. 4: 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. 5: The presence of DTC P0601, P0602, P0603, P0604, P0606 or P1621 indicates an internal fault in the engine control module (ECM).
5. 6: The presence of DTC B1000, B1004, B1007, or B1009 indicates an internal module fault.

Diagnostic System Check - Theft Deterrent

Scan Tool Output Controls

Dash Integration Module (DIM)

Instrument Panel Cluster (IPC)

Rear Integration Module (RIM)

Scan Tool Data List

Dash Integration Module (DIM)

Driver Door Module (DDM)

Engine Control Module (ECM)

Rear Integration Module (RIM)

Vehicle Theft Deterrent

Diagnostic Trouble Code (DTC) List

Diagnostic Trouble Code (DTC) List

Circuit Description

After a loss of battery power has been restored the theft deterrent control module will perform a check on the stored vehicle identification number (VIN). If the VIN is CORRECT, the theft deterrent control module will run the VIN Timer for a programmable length of time, typically 10 minutes. The theft deterrent control module will send a message via the serial data circuit to the instrument panel cluster (IPC) to illuminate the SECURITY indicator. After the VIN Timer has timed out, the security indicator will turn OFF. If the VIN is INCORRECT, the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit. The VTD system considers this to be a tamper and will not allow the vehicle to start. The theft deterrent control module will send a message via the serial data circuit to the instrument panel cluster (IPC) to flash the SECURITY indicator.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

1. The VIN check flag of the theft deterrent control module is true.
2. The theft deterrent control module has determined that the battery has been reconnected after a disconnect.

Action Taken When the DTC Sets

1. The vehicle will not start.
2. The theft deterrent control module sends the fuel disable message via the serial data circuit to the ECM.
3. The theft deterrent control module will run the VIN Timer for a programmable length of time, typically 10 minutes.
4. The theft deterrent control module sends a message to the instrument panel cluster (IPC) to illuminate the SECURITY indicator.

Conditions for Clearing the MIL/DTC

1. The Theft Deterrent control module clears the current DTC when the correct VIN information is present.
2. The DTC can be cleared by using a scan tool.

Diagnostic Aids

The VIN information is stored during the Setup New VTD Module procedure on a GM SPO replacement part. When the manufactures enable counter (MEC) is equal to 0 the VIN information cannot be changed.

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

1. 2: If DTC B1015 or B1016 are set as a current code, the VIN information was either incorrectly stored or not stored. The VIN information is stored during the Setup New VTD Module procedure on a GM SPO replacement part. When either the Setup New VTD Module procedure has been performed or when the manufactures enable counter (MEC) is equal to 0 the VIN information cannot be changed.

DTC B1015

After a loss of battery power has been restored the theft deterrent control module will perform a check on the stored vehicle identification number (VIN). If the VIN is CORRECT, the theft deterrent control module will run the VIN Timer for a programmable length of time, typically 10 minutes. The theft deterrent control module will send a message via the serial data circuit to the instrument panel cluster (IPC) to illuminate the SECURITY indicator. After the VIN Timer has timed out, the security indicator will turn OFF. If the VIN is INCORRECT, the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit. The VTD system considers this to be a tamper and will not allow the vehicle to start. The theft deterrent control module will send a message via the serial data circuit to the instrument panel cluster (IPC) to flash the SECURITY indicator.

The ignition is ON.

1. The VIN check flag of the theft deterrent control module is true.
2. The theft deterrent control module has determined that the battery has been reconnected after a disconnect.

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

1. The Theft Deterrent control module clears the current DTC when the correct VIN information is present.
2. The DTC can be cleared by using a scan tool.

The VIN information is stored during the Setup New VTD Module procedure on a GM SPO replacement part. When the manufactures enable counter (MEC) is equal to 0 the VIN information cannot be changed.

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

1. 2: If DTC B1015 or B1016 are set as a current code, the VIN information was either incorrectly stored or not stored. The VIN information is stored during the Setup New VTD Module procedure on a GM SPO replacement part. When either the Setup New VTD Module procedure has been performed or when the manufactures enable counter (MEC) is equal to 0 the VIN information cannot be changed.

DTC B1016

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 is ON.

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 and the ignition is switched ON, 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 a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel enable password via the class 2 serial data circuit to the engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the class 2 serial data circuit.

The ignition switch is in the ON position and the battery voltage is greater than 9.0 volts.

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 vehicle will not start.
2. The theft deterrent control module sends a message via the serial data circuit to the radio to display SERVICE THEFT SYSTEM.
3. The theft deterrent control module sends a message via the serial data circuit to the instrument panel cluster (IPC) to illuminate the SECURITY indicator.

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. 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.
6. 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

When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, 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 a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel enable password via the class 2 serial data circuit to the engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the class 2 serial data circuit.

The ignition switch is in the ON position and the battery voltage is greater than 9.0 volts.

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.

1. The vehicle will not start.
2. The theft deterrent control module sends a message via the serial data circuit to the radio to display STARTING DISABLED REMOVE KEY.
3. The theft deterrent control module sends a message via the serial data circuit to the instrument panel cluster (IPC) to flash the SECURITY indicator.

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 B3060 is current.
2. 4: The only method to determine which re-learn procedure to perform.
3. 5: To set this DTC, 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 DTC, 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, a 10 Minute Re-Learn Procedure or 30 Minute Re-Learn Procedure must be performed.

DTC B3060

When the content theft deterrent (CTD) system arms, and the intrusion sensor is enabled, the body control module (BCM) receives a power-up acknowledgment from the intrusion sensor via the intrusion sensor armed signal circuit.

1. The intrusion sensor is enabled.
2. The CTD system has armed.

The BCM does not receive the power-up acknowledgment from the intrusion sensor.

The BCM will ignore all inputs from the intrusion sensor for the remainder of the CTD system arming cycle.

DTC B3090 will be cleared if any of the following occur

1. The BCM receives a power-up acknowledgment from the intrusion sensor during the next CTD system arming cycle, and the intrusion sensor is enabled.
2. You use the scan tool to clear DTCs.

DTC B3090

When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, 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 a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel enable password via the class 2 serial data circuit to the engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the class 2 serial data circuit.

The ignition switch is in the ON position and the battery voltage is greater than 9.0 volts.

1. The transponder value matches the value stored in the theft deterrent control modules memory.
2. The transponders calculation on the challenge from the theft deterrent control module does not match the theft deterrent control modules calculation.

1. The vehicle will not start.
2. The theft deterrent control module sends a message via the serial data circuit to the radio to display STARTING DISABLED REMOVE KEY.
3. The theft deterrent control module sends a message via the serial data circuit to the instrument panel cluster (IPC) to flash the SECURITY indicator.

1. The theft deterrent control module clears the current status of the DTC when the transponders calculation on the challenge matches the theft deterrent control modules calculation.
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 conditions for setting DTC B3055 or B3060 are not current.
2. 3: 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.
3. 4: If the replacement key does not work, the theft deterrent control module must be malfunctioning.

DTC B3935

When the theft deterrent control module is in the learn coded key mode or learn more keys mode and the crypt valet mode is enabled the theft deterrent control module checks the passkey III plus key to insure it has been configured as a master key or a valet key.

Condition for Running the DTC

1. The ignition switch is in the ON position.
2. The theft deterrent control module is in the learn coded key mode or learn more keys mode.
3. The crypt valet mode is enabled in the theft deterrent control module.

The theft deterrent control module has determined that the passkey III+ (PK3+) key has not been configured as a master key or a valet key.

1. The vehicle will not start.
2. The theft deterrent control module sends a message via the serial data circuit to the radio to display SERVICE THEFT SYSTEM.
3. The theft deterrent control module sends a message via the serial data circuit to the instrument panel cluster (IPC) to illuminate the SECURITY indicator.

1. The Theft Deterrent control module clears the current DTC when the condition for setting is not present and the ignition is cycled from OFF to ON.
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 conditions for setting DTC B3055 or B3060 are not current.
2. 3: The key must have the proper mechanical cut and the theft deterrent control module must "learn" the transponder value.

DTC B3976

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 enable 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 or the ECM is no longer receiving the fuel enable password from the theft deterrent control module.

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.

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 ECM has not received the fuel enable password from the theft deterrent control module within 1 second or the ECM is no longer receiving the fuel enable password from the theft deterrent control module.
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 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 engine control module (ECM) has not received the fuel enable password from the theft deterrent control module within 1 second.

Actions Taken When the DTC Sets

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 engine control module (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 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. DTC P1630 is an informational code indicating the ECM is ready to learn the fuel enable password.

The ignition is ON.

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

1. The engine control module (ECM) sends a serial data message to the instrument panel cluster (IPC) to illuminate the SECURITY indicator.
2. 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 engine control module (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 .

DTC P1630

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 engine control module (ECM) receives a incorrect password from the theft deterrent control module.

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 engine control module (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 P1631

Symptoms - Theft Deterrent

1. Perform the «Diagnostic System Check - Theft Deterrent»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system) before using the Symptom Tables 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 theft systems description and operation in order to familiarize yourself with the system functions. Refer to: «Theft Systems Description and Operation»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__theft-systems-description-and-operation) «Content Theft Deterrent (CTD) Description and Operation»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__content-theft-deterrent-ctd-description-and) «Vehicle Theft Deterrent (VTD) Description and Operation»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__vehicle-theft-deterrent-vtd-description-and)

Visual/Physical Inspection

1. Inspect for aftermarket accessories which could affect the operation of the theft system. Refer to «Checking Aftermarket Accessories»(/cadillac/cts/i-2002-2007/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. Inspect the ignition key for "PK3" stamped on the shank.
4. Inspect the PASS-Key®III key head for damage.

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»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system)
2. «Content Theft Deterrent (CTD) Does Not Disarm with Key Lock»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system)
3. «Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode»(/cadillac/cts/i-2002-2007/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»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__lights-inoperative-in-content-theft-deterrent)
5. «Security Indicator Inoperative»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__security-indicator-inoperative)
6. «Inclination Sensor Inoperative»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__inclination-sensor-inoperative)
7. «Intrusion Sensor Inoperative»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__intrusion-sensor-inoperative)
8. «Theft Deterrent Alarm Inoperative»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__theft-deterrent-alarm-inoperative)

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

1. 11: Step 11 and Step 12 apply only to vehicles equipped with RPO UA2. If the vehicle is not equipped with RPO UA2, proceed directly to Step 13.
2. 12: Step 11 and Step 12 apply only to vehicles equipped with RPO UA2. If the vehicle is not equipped with RPO UA2, proceed directly to Step 13.
3. 15: Step 15 applies only to vehicles equipped with RPO UA2. If the vehicle is not equipped with RPO UA2, proceed directly to Step 16.

Content Theft Deterrent (CTD) Alarm Mode Inoperative

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

1. 3: Scan tool should read the normal state operation.

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 Inoperative

Security Indicator Inoperative

Inclination Sensor Inoperative

Inclination Sensor Inoperative

Intrusion Sensor Inoperative

Intrusion Sensor Inoperative

Theft Deterrent Alarm Inoperative

Theft Deterrent Alarm Inoperative

Scheme 40

1. Open the hood.
2. Remove the nut (1) from the stud (2) securing the hood ajar switch to the strut tower.
3. Lift the hood ajar switch upward in order to remove the switch from the strut tower.
4. Disconnect the electrical connector from the hood ajar switch.

Installation Procedure

1. Connect the hood ajar switch electrical connector to the hood ajar switch.
2. Position the hood ajar switch over the stud (2) to the strut tower assembly.
3. Install the nut (1) in order to secure the hood ajar switch to strut tower assembly.
4. Close the hood.

Scheme 41

1. Remove the rear dome lamp lens (1).
2. Remove the dome lamp assembly.
3. Remove the intrusion sensor from the dome lamp trim cover.
4. Release the tabs securing the intrusion sensor to the dome lamp assembly.

1. Install the intrusion sensor in the dome lamp assembly.
2. Install the dome lamp trim cover.
3. Install the dome lamp lens (1).

Removal Procedure

Scheme 42

1. Disable the inflatable restraint steering wheel module. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
3. Remove the lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
4. Disconnect the connector from the theft deterrent control module.
5. If necessary, disconnect the connector from the ignition lock cylinder case.
6. Remove the theft deterrent control module from ignition lock cylinder case assembly.

1. Install the theft deterrent control module onto the ignition lock cylinder case assembly. CAUTION: Refer to SIR Inflator Module Coil Caution in Cautions and Notices.
2. Connect the connector to the theft deterrent control module.
3. If necessary, connect the connector to the ignition lock cylinder case.
4. Install the lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
5. Install the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
6. Enable the inflatable restraint steering wheel module. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
7. Program the theft deterrent system. Refer to «Programming Theft Deterrent System Components»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system) .

Scheme 43

1. Remove the right rear compartment trim. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.
2. Remove the nuts securing the theft deterrent alarm (1) to the vehicle body.
3. Disconnect the electrical connector (3) from the alarm.
4. Remove the alarm from the vehicle.

1. Reconnect the electrical connector (3) to the alarm.
2. Install the alarm onto the vehicle. Tighten: Tighten the nuts to 9 N.m (80 lb in).
3. Install the rear compartment trim. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.

1. Remove the right rear compartment trim. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.
2. Remove the theft deterrent inclination sensor (2) from the theft deterrent alarm (1)
3. Disconnect the electrical connector from the sensor.
4. Remove the sensor from the vehicle.

1. Reconnect the electrical connector to the sensor.
2. Install the inclination sensor (2) onto the theft deterrent alarm (1).
3. Install the rear compartment trim. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.

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.

Set Up a New Theft Deterrent Control Module

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

Tools Required: Scan tool

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

Use this procedure after replacing any of the following components

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

Tools Required

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

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. Ensure the correct programming procedure is selected based on component being replaced or programmed. See Important above.
7. Disconnect the scan tool from the Techline Terminal and re-connect the scan tool to the vehicle.
8. With a master PK3+ 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: The scan tool will initially display 12 Minutes. The first 2 minutes allow the scan tool to initialize the appropriate control module. The remaining 10 minutes is the relearn timer. On some vehicles the SECURITY telltale may be 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 CRANK.
12. Turn OFF the ignition and wait 5 seconds.
13. With a master PK3+ key, start the vehicle. The theft deterrent control module has now learned the key transponder information or the ECM has now learned the fuel continue password.
14. Turn OFF the ignition and wait 15 seconds minimum.
15. With a second master PK3+ key, start the vehicle. The theft deterrent control module has now learned the second master PK3+ key transponder information.
16. If additional keys are required to be learned, refer to «Adding Keys (Domestic)»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__adding-keys-domestic) or «Adding Keys (Export including Canada)»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__adding-keys-export-including-canada) .
17. With a scan tool, clear any DTCs.

30-Minute Relearn Procedure

Use this procedure after replacing any of the following components

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

1. With a master passkey III+ (PK3+) key, 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 PK3+ key, start the vehicle. The vehicle has now learned the key transponder information and the ECM has now learned the fuel continue password.
6. If additional keys are required to be learned, refer to «Adding Keys (Domestic)»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__adding-keys-domestic) or «Adding Keys (Export including Canada)»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__adding-keys-export-including-canada) .
7. 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 content theft deterrent (CTD) system. The VTD system prevents drive away theft by keeping the vehicle from starting. The CTD system is the vehicle alarm system which discourages unauthorized entry into the vehicle. These systems are described and diagnosed separately within this section.

SECURITY

The instrument panel cluster (IPC) illuminates the SECURITY indicator as determined by the vehicle theft deterrent (VTD) system and the content theft deterrent (CTD) system. The IPC receives a message from the theft deterrent control module or the rear integration module (RIM) via the serial data circuit 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. For specific VTD condition that will illuminate the security indicator, refer to «Vehicle Theft Deterrent (VTD) Description and Operation»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__vehicle-theft-deterrent-vtd-description-and) .
2. The CTD system requests the IPC to illuminate the indicator only when the ignition switch is OFF. The CTD system uses the indicator in order to identify system status. For specific CTD condition that will illuminate the security indicator, refer to «Content Theft Deterrent (CTD) Description and Operation»(/cadillac/cts/i-2002-2007/remont/door-locks-anti-theft-systems/#theft-deterrent-system__content-theft-deterrent-ctd-description-and) .
3. The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.

SERVICE THEFT SYSTEM

The radio illuminates the SERVICE THEFT SYSTEM message when the VTD system detects a failure. The radio receives a message from the theft deterrent control module via the serial data circuit requesting illumination.

STARTING DISABLED REMOVE KEY

The radio illuminates the STARTING DISABLED REMOVE KEY message when the VTD system has disabled the starting system. The radio receives a message from the theft deterrent control module via the serial data circuit requesting illumination.

THEFT ATTEMPTED

The radio illuminates the THEFT ATTEMPTED indicator when the CTD system has detected a theft attempt. The radio receives a message from the rear integration module (RIM) via the serial data circuit requesting illumination.

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

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

CTD/VTD Description and Operation

1. For content theft Deterrent (CTD) information, refer to «Content Theft Deterrent (CTD) Description and Operation»(/cadillac/cts/i-2002-2007/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»(/cadillac/cts/i-2002-2007/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. 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.
2. Forced entry into the rear compartment.

The components of the system are

1. Dash integration Module (DIM)
2. Door Lock Actuators
3. Door Modules
4. Front door lock cylinder disarm switches
5. Instrument Panel Cluster (IPC)
6. Rear Integration Module (RIM)
7. Remote Function Actuators
8. Rear compartment tamper switch

Arming the CTD System

Use the following procedure in order to arm the system

1. Place the shift lever in park (P).
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 transmitter must be used to arm the CTD system.
4. Lock the doors with any 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 SECURITY indicator ON STEADY. When the indicator transitions to OFF, 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 transmitter, it must be disarmed.

1. To disarm the CTD system in standby mode (SECURITY indicator on or flashing and door(s) open): Press either power door unlock switch. Use the key to unlock either front door. Press the UNLOCK button on the transmitter. Insert a valid Pass Key III key into the ignition and switch to run position.
2. To disarm the CTD system in the armed mode: Use the key to unlock either front door. Press the UNLOCK button on the transmitter. Insert a valid Pass Key III key into the ignition and switch to run 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 transmitter. Insert a valid Pass Key III key into the ignition and switch to run position.

Personalization

Refer to Personalization Description and Operation in Personalization.

CTD Circuit Description

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

Door Lock Actuators

The CTD system uses the door jamb switches in the door lock assembly as one method to activate the alarm. The door modules monitor the door jamb switches. If the rear integration module (RIM) receives a class 2 message from a door module that a door is open and the CTD system is armed, the RIM activates the alarm.

Door Lock Cylinder Switch

The front door lock cylinders are equipped with switches in order to disarm the CTD system. When a lock cylinder is turned to the unlock position the switch grounds the disarm input to the door module.

Rear Integration Module (RIM)

The CTD system is an internal function of the Rear Integration Module (RIM) which utilizes class 2 serial data and various switch input information to perform CTD functions. When the RIM detects an unauthorized entry, the RIM commands the Dash Integration Module (DIM) to activate the horns and exterior lamps via the class 2 serial data line. The RIM has five basic modes (disarmed, standby, delayed, armed, and alarm) for operating the CTD system. The different modes are described below.

1. The RIM 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 RIM enters the standby mode when the above conditions are detected. In standby mode the RIM commands the instrument cluster to illuminate the SECURITY indicator via the class 2 serial data line. (If all the doors are closed and the LOCK button on the transmitter is used, the RIM enters the delayed mode.
3. When the last door is closed, the RIM enters the delayed mode for 30 seconds. In delayed mode the RIM commands the instrument cluster to illuminate the SECURITY indicator via the class 2 serial data line.
4. After 30 seconds, the RIM enters the armed mode. In armed mode the RIM commands the instrument cluster to turn off the SECURITY indicator via the class 2 serial data line. Any forced entry activates the alarm mode.
5. When the RIM detects a forced entry, the RIM enters the alarm mode. The RIM commands the DIM to activate the horn and exterior lamps for 30 seconds, via a class 2 message. 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.

Remote Function Actuator (RFA) Module

The Remote Keyless Entry (RKE) system is an internal function of the Remote Function Actuator (RFA) Module. The RKE system can arm and disarm the CTD system. When the RKE module receives a door lock or unlock signal from the transmitter, the RKE module sends a class 2 message to the RIM in order to perform the appropriate arm/disarm functions.

Rear Compartment Tamper Switch

The rear compartment lid is equipped with a lock cylinder tamper switch. Any forced movement of the lock cylinder activates the tamper switch. Both or either of the following actions activate the lock cylinder tamper switch

1. Rotation caused by forced entry
2. In and out movement of the lock cylinder caused by forced entry

Inputs

The RIM monitors the following inputs

1. Driver and passenger door jamb switches, class 2 message from the Driver Door Module
2. Driver and passenger power door lock/unlock switches, class 2 message from the Driver Door Module
3. Driver door lock cylinder switch, class 2 message from the Driver Door Module
4. Transmitter LOCK/UNLOCK buttons, class 2 message from the Remote Function Actuator (RFA) Module
5. Rear compartment tamper switch

Outputs

The RIM commands the DIM to control the following via a class 2 message

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. When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, 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 a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel continue password via the serial data circuit to the Engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit. The components of the VTD system are as follows

1. Theft deterrent control module
2. Engine control module (ECM)
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 ECM, fuel continue/disable via the serial data circuit.

When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, 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 a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge. The theft deterrent control module then performs one of the following functions

1. If both the transponder value and the calculation to the challenge are correct, the theft deterrent control module will send the fuel continue password to the ECM via the serial data circuit.
2. If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit.
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, the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit.

Module Substitution Deterrence w/UA2

Module Substitution Deterrence is on some EXPORT vehicles and is an internal function of the theft deterrent control module. Module substitution deterrence will disable starting of the vehicle when a loss of battery power has been restored. This can be do to, the vehicles battery becoming discharged or the battery power being removed from the VTD system. The theft deterrent control module performs one of the following functions

1. After a loss of battery power has been restored the theft deterrent control module will perform a check on the stored vehicle identification number (VIN). If the VIN is CORRECT, the theft deterrent control module will run the VIN Timer for a programmable length of time, typically 10 minutes. If there is a loss of battery power and it is necessary to jump start the vehicle, refer to «Jump Starting in Case of Emergency»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system__jump-starting-in-case-of-emergency) Before attempting to start the vehicle the ignition must be in the ON position for the duration of the VIN Timer, the security indicator will be on steady. After the VIN Timer has timed out, the security indicator will turn OFF. The vehicle can now be started.
2. After a loss of battery power has been restored the theft deterrent control module will perform a check on the stored vehicle identification number (VIN). If the VIN is INCORRECT, the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit. The VTD system considers this to be a tamper and will not allow the vehicle to start. The VTD system will command the security indicator to flash.

Engine Control Module (ECM)

The ECM verifies that the password received from the theft deterrent control module via the serial data circuit is correct. The ECM can learn only one fuel continue password. If the fuel continue password is correct, the ECM enables the starting and fuel delivery systems.

The ECM disables the starting and fuel delivery systems if any of the following conditions occur

1. The fuel continue password is incorrect.
2. The fuel 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 passkey III+ (PK3+) equipped vehicles is a typical looking ignition key with a transponder located in the plastic head of the key. The transponder value is fixed and unable to be changed. The VTD 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. VTD systems use the following types of ignition keys

Master Keys

Master keys have a black plastic head 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 have a gray plastic head and are for restricted operation of the vehicle. 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 passkey III+ equipped vehicle. The ignition lock cylinder for vehicles with PK3+ 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, the new ignition lock cylinder must be coded to match the mechanical coding of the PK3+ keys. When replacing an ignition lock cylinder, and new PK3+ keys are required, the new keys must be learned by the theft deterrent control module. refer to Programming Theft Deterrent System Components .

Security Indicator Operation

The theft deterrent control module can command the instrument cluster to illuminate the security indicator only when the ignition key is in the ON position. If the ECM 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. A flashing indicator indicates unauthorized operation. Under the following conditions the security indicator may be commanded to illuminate or flash.

Security Indicator Stays Illuminated and Engine Starts

If the theft deterrent control module was unable to measure the ignition key transponder value or the ECM lost communication with the VTD system while the engine was last running, the indicator will remain illuminated during subsequent ignition cycles. This is to remind the driver that the VTD system will not be functioning until the problem is corrected.

Security Indicator Illuminates when Engine is Running

If the theft deterrent control module is unable to measure the ignition key transponder value or the ECM loses communication with the theft deterrent control module while the engine is running, the security indicator will be illuminated.

Security Indicator Illuminated and Engine Does Not Start

If the theft deterrent control module was unable to measure the ignition key transponder value, the theft deterrent control modules VIN Check Timer is active, the ECM has detected a problem with the VTD system or the VTD system is in Learn Mode. The security indicator will be illuminated

Security Indicator Flashes and Engine Does Not Start

The theft deterrent control module has measured an incorrect transponder value, the calculation to the challenge is incorrect or the ECM has lost communication with the theft deterrent control module. The VTD system considers this a tamper condition. The security indicator will flash.

See also:
• Scan Tool Does Not Power Up
• Data Link References
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• DTC B3064 or B3069
• Testing for Intermittent Conditions and Poor Connections
• Checking Aftermarket Accessories
• Trunk Ajar Indicator Always On
• Courtesy Lamps Inoperative
• Courtesy Lamps Always On
• Dash Integration Module Replacement
• Testing for Electrical Intermittents
• Circuit Testing
• Wiring Repairs
• Connector Repairs
• Horn Replacement
• Park Lamps Inoperative
• Instrument Panel Cluster (IPC) Replacement
• SIR Caution
• SIR Disabling and Enabling Zone 3
• Steering Column Trim Covers Replacement
• Compartment Trim Panel Replacement - Rear
• Keyless Entry System Description and Operation
• Radio/Audio System Description and Operation
• Personalization Description and Operation
• Jump Starting in Case of Emergency
• Diagnostic System Check - Theft Deterrent
• Symptoms - Theft Deterrent
• Diagnostic Trouble Code (DTC) List
• Adding Keys (Domestic)
• Adding Keys (Export including Canada)
• Replacing Keys
• Intrusion Sensor Inoperative
• Theft Systems Description and Operation
• Content Theft Deterrent (CTD) Description and Operation
• Vehicle Theft Deterrent (VTD) Description and Operation
• Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode
• Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode
• Security Indicator Inoperative
• Inclination Sensor Inoperative
• Theft Deterrent Alarm Inoperative