What fault codes are now present? I would expect multiple communication faults ('U----' codes).
The Chrysler PT went to CAN bus communication in 2006. The TIPM (totally integrated power module) is the Gateway module.
The Vehicle Theft (Immobilizer) system may be different in Europe than in the U.S. The key (transponder) chip transmits the 4-digit key ID to the WCM (also called the Node or SKREEM) receiver in the steering column. It and the PCM hold the matching ID number to allow permission to start.
Swapping modules is frowned upon by engineering, even for temporary, diagnostic purposes as it can 'infect' the recipient car with the donor car's configuration.
You may not be able to undo this at the shop level & need to send the module out to an 'authorized' Chrysler electronic repair depot. This is all done in the interest in reducing tampering & vehicle theft.
Does the fuel gauge in the instrument cluster work? All other information is carried over the CAN bus. Is the bus down?
The following is a copy & paste from my notes. Read through it to get a better understanding of how the module 'network' networks.
SKIS INITIALIZATION
The Sentry Key Immobilizer System (SKIS) must be initialized following a Sentry Key REmote Entry Module (SKREEM), sometimes referred to as the Wireless Control Module (WCM), replacement. SKIS initialization requires the use of a diagnostic scan tool. Initialization will also require that you have access to the unique four-digit PIN code that was assigned to the original SKREEM/WCM. The PIN code MUST be used to enter the Secured Access Mode in the SKREEM/WCM. This PIN number may be obtained from the vehicle owner, from the original vehicle invoice, or from the Chrysler Customer Center (Refer to 08 - Electrical/8E - Electronic Control Modules - Standard Procedure) .
NOTE: If a Powertrain Control Module (PCM) is replaced on a vehicle equipped with the Sentry Key Immobilizer System (SKIS), the unique Secret Key data must be transferred from the Sentry Key REmote Entry Module (SKREEM) to the new PCM using the appropriate programming procedure. This procedure also requires the use of a diagnostic scan tool and the unique four-digit PIN code to enter the Secured Access Mode in the SKREEM/WCM.
STANDARD PROCEDURE - SKREEM PROGRAMMING
When a Powertrain Control Module (PCM) for a gasoline engine, or an Engine Control Module (ECM) for a diesel engine and the Sentry Key Remote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM) on vehicles equipped with the Sentry Key Immobilizer System (SKIS) are replaced at the same time, perform the following steps in order:
NOTE: If the PCM and the SKREEM are replaced at the same time, program the PCM VIN into the PCM first.
1. If applicable first replace the PCM/ECM with the original WCM still connected to the vehicle.
2. Using the appropriate service information program the new PCM/ECM. (This will ensure the Secret Key Transfer from the original WCM into the new PCM/ECM).
3. Now replace and program the WCM. This will retain the Secret Key from the PCM/ECM back into the new WCM.
4. With the scan tool, select Miscellaneous Functions, WCM/Wireless Control Module. Then select the desired procedure and follow the display on the scan tool.
5. If the vehicle is equipped with Tire Pressure Monitoring System program the Placard Pressure Values into the WCM/SKREEM.
6. Ensure all the customer's keys have been programmed into the new module if necessary.
NOTE: If the original keys do not successfully program to the new SKREEM after the proper procedures are followed correctly, programming new keys will be necessary.
PROGRAMMING THE SKREEM
The SKIS Secret Key is an ID code that is unique to each SKREEM/WCM. This code is programmed and stored in the SKREEM/WCM, the PCM/ECM, and each ignition key transponder chip. When the PCM/ECM or SKREEM/WCM is replaced, it is necessary to program the Secret Key into the new module using a diagnostic scan tool. Follow the programming steps outlined in the diagnostic scan tool for PCM REPLACED, ECM REPLACED, WCM REPLACED, or GATEWAY REPLACED under MISCELLANEOUS FUNCTIONS for the WIRELESS CONTROL MODULE/WCM menu item as appropriate.
NOTE: Programming the PCM/ECM or SKREEM is done using a diagnostic scan tool and a PIN to enter secure access mode. If three attempts are made to enter secure access mode using an incorrect PIN, secure access mode will be locked out for one hour. To exit this lockout mode, turn the ignition to the RUN position for one hour then enter the correct PIN. Be certain that all accessories are turned OFF. Also monitor the battery state and connect a battery charger if necessary.
NOTE: Before replacing the ECU for a failed driver, control circuit or ground circuit, be sure to check the related component/circuit integrity for failures not detected due to a double fault in the circuit. Most ECM driver/control circuit failures are caused by internal component failures (i.e. relay and solenoids) and shorted circuits (i.e. pull-ups, drivers and switched circuits). These failures are difficult to detect when a double fault has occurred and only one DTC has set.
ECM/SKIM/WCM PROGRAMMING
When a ECM and the SKIM are replaced at the same time perform the following steps in order:
1. Program the new SKIM
2. Program the new ECM
3. Replace all ignition keys and program them to the new SKIM.
ECM/SKIM/WCM PROGRAMMING
When an ECM (Bosch) and the SKIM are replaced at the same time perform the following steps in order:
1. Program the new SKIM
2. Program the new ECM (Bosch)
3. Replace all ignition keys and program them to the new SKIM.
PROGRAMMING THE SKIM
CAUTION: Read all notes and cautions for programming procedures.
1. Connect a battery charger to the vehicle.
2. Connect the StarSCAN®.
CAUTION: If the ECM/PCM and SKREEM/WCM are replaced at the same time, the ECM/PCM MUST be programmed before the SKREEM/WCM.
3. Select “ECU View”.
4. Select “WCM Wireless Control Module”.
5. Select “Miscellaneous Functions”.
6. Select WCM replaced.
7. Enter the PIN when prompted.
8. Verify the correct information.
NOTE: If the ECM and the SKIM are replaced at the same time, all vehicle keys will need to be replaced and programmed to the new SKIM.
PROGRAMMING IGNITION KEYS TO THE SKREEM
Each ignition key transponder also has a unique ID code that is assigned at the time the key is manufactured. When a key is programmed into the SKREEM/WCM, the transponder ID code is learned by the module and the transponder acquires the unique Secret Key ID code from the SKREEM/WCM. To program ignition keys into the SKREEM/WCM, follow the programming steps outlined in the diagnostic scan tool for PROGRAM IGNITION KEYS OR KEY FOBS under MISCELLANEOUS FUNCTIONS for the WIRELESS CONTROL MODULE/WCM menu item.
NOTE: If the original keys do not successfully program to the new SKREEM after the proper procedures are followed correctly, programming new keys will be necessary.
NOTE: A maximum of eight keys can be learned to each SKREEM. Once a key is learned to a SKREEM, that key has acquired the Secret Key for that SKREEM and cannot be transferred to any other SKREEM or vehicle.
If ignition key programming is unsuccessful, the scan tool will display one of the following error messages:
1. PROGRAMMING NOT ATTEMPTED - The scan tool attempts to read the programmed key status and there are no keys programmed into SKREEM memory.
2. PROGRAMMING KEY FAILED (POSSIBLE USED KEY FROM WRONG VEHICLE) - SKREEM is unable to program an ignition key transponder due to one of the following:
3.
1. The ignition key transponder is ineffective.
2. The ignition key transponder is or has been already programmed to another vehicle.
4. 8 KEYS ALREADY LEARNED, PROGRAMMING NOT DONE - The SKREEM transponder ID memory is full.
5. LEARNED KEY IN IGNITION - The ID for the ignition key transponder currently in the ignition lock cylinder is already programmed into SKREEM memory.
SENTRY KEY IMMOBILIZER SYSTEM
The Sentry Key Immobilizer System (SKIS) is available as a factory-installed option on this model. Vehicles equipped with the Vehicle Theft Alarm (VTA) are also equipped with SKIS. The SKIS provides passive vehicle protection by preventing the engine from operating unless a valid electronically encoded key is detected in the ignition lock cylinder. The SKIS used in combination with the export premium version of the VTA adds a steering shaft lock feature that provides passive protection by preventing the vehicle from being steered unless a valid electronically encoded key is detected in the ignition lock cylinder, but is only available in vehicles manufactured for sale in certain markets where it is required equipment.
The SKIS includes the following major components, which are described in further detail elsewhere in this service information:
1. Sentry Key Remote Entry Module - The Sentry Key REmote Entry Module (SKREEM) is sometimes referred to as the Wireless Control Module (WCM). The SKREEM/WCM is located on the instrument panel to the right side of the steering column near the ignition lock cylinder housing and an integral molded plastic antenna ring circles the ignition lock cylinder like a halo. The SKREEM/WCM and its antenna are concealed beneath an ignition switch bezel on the instrument panel.(Refer to 08 - Electrical/Vehicle Theft Security/MODULE, Sentry Key Immobilizer (SKREEM) - Description).
2. Sentry Key Transponder - The Sentry Key transponder is contained within the Remote Keyless Entry (RKE) transmitter integral to the head of the ignition key. (Refer to 08 - Electrical/Vehicle Theft Security/KEY, Transponder - Description) .
3. Security Indicator - A security indicator is integral to the ElectroMechanical Instrument Cluster (EMIC).
DESCRIPTION
When a PCM and the SKREEM are replaced at the same time, perform the following steps in order:
1. Program the new PCM.
2. Program the new SKREEM.
3. Replace all ignition keys and program them to the new SKREEM.
(Refer to 08 - Electrical/Electronic Control Modules - Standard Procedure)
The Sentry Key REmote Entry Module (SKREEM) is sometimes referred to as the Wireless Control Module (WCM). The SKREEM/WCM is the primary component of the Sentry Key Immobilizer System (SKIS). It is also the receiver for the Remote Keyless Entry (RKE) system. The SKREEM/WCM is located on the steering column, around the ignition lock cylinder housing and is concealed beneath the steering column shrouds. The molded black plastic housing for the SKREEM/WCM has an integral molded plastic halo-like antenna ring (3) that extends from one side. When the SKREEM/WCM is properly installed, the antenna ring is oriented around the ignition lock cylinder housing.
A single connector (1) is located next to the antenna ring on the SKREEM/WCM housing. A molded plastic mounting tab (2) on the SKREEM/WCM housing secures the unit to the steering column. The SKREEM/WCM is connected to the vehicle electrical system through the instrument panel wire harness.
The SKREEM/WCM cannot be adjusted or repaired. If faulty or damaged, the entire SKREEM unit must be replaced.
OPERATION
When the ignition switch is turned to the On position, the Sentry Key REmote Entry Module (SKREEM), sometimes referred to as the Wireless Control Module (WCM), communicates through its antenna with the Sentry Key transponder using a Radio Frequency (RF) signal. The SKREEM/WCM then listens for a RF response from the transponder through the same antenna. The Sentry Key transponder chip is within the range of the SKREEM/WCM transceiver antenna ring when it is inserted into the ignition lock cylinder. The SKREEM/WCM determines whether a valid key is present in the ignition lock cylinder based upon the response from the transponder. If a valid key is detected, that fact is communicated by the SKREEM/WCM to the Powertrain Control Module (PCM) over the Controller Area Network (CAN) data bus, and the PCM allows the engine to continue running. If the PCM receives an invalid key message, or receives no message from the SKREEM/WCM over the CAN data bus, the engine will be disabled after about two seconds of operation. The ElectroMechanical Instrument Cluster (EMIC), sometimes referred to as the Cab Compartment Node (CCN), will also respond to the invalid key message on the CAN data bus by flashing the security indicator on and off.
Each Sentry Key has a unique transponder identification code permanently programmed into it by the manufacturer. Likewise, the SKREEM/WCM has a unique Secret Key code programmed into it by the manufacturer. When a Sentry Key is programmed into the memory of the SKREEM/WCM, the SKREEM/WCM stores the transponder identification code from the Sentry Key, and the Sentry Key learns the Secret Key code from the SKREEM/WCM. Once the Sentry Key learns the Secret Key code of the SKREEM/WCM, it is permanently stored in the memory of the transponder. Therefore, once a Sentry Key has been programmed to a particular vehicle, it cannot be used on any other vehicle (Refer to 08 - Electrical/Vehicle Theft Security - Standard Procedure) .
The Sentry Key REmote Entry System (SKREES) performs a self-test each time the ignition switch is turned to the On position, and will store key-related fault information in the form of a Diagnostic Trouble Code (DTC) in SKREEM/WCM memory if a Sentry Key transponder problem is detected. The Sentry Key transponder chip can be diagnosed, and any stored DTC can be retrieved using a diagnostic scan tool. Refer to the appropriate diagnostic information.
Common communication problems:
1. Two transponder keys too close together.
2. Speed Pass too close to transponder key.
Solid indicator that there is a system failure.
1. Loss of PCM communication.
2. Failed antenna circuit.
OPERATION
The Sentry Key REmote Entry Module (SKREEM), sometimes referred to as the Wireless Control Module (WCM), contains a Radio Frequency (RF) transceiver and a microprocessor. The SKREEM/WCM transmits RF signals to, and receives RF signals from the Sentry Key transponder through a tuned antenna enclosed within the molded plastic antenna ring integral to the SKREEM/WCM housing. If this antenna ring is not mounted properly around the ignition lock cylinder housing, communication problems between the SKREEM/WCM and the transponder may arise. These communication problems will result in Sentry Key transponder-related faults.
The SKREEM/WCM also serves as the Remote Keyless Entry (RKE) RF receiver. The SKREEM/WCM communicates over the Controller Area Network (CAN) data bus with the ElectroMechanical Instrument Cluster (EMIC) (sometimes referred to as the Cab Compartment Node (CCN), the Powertrain Control Module (PCM), and/or the diagnostic scan tool.
The SKREEM/WCM retains in memory the ID numbers of any Sentry Key transponder that is programmed into it. A maximum of eight Sentry Key transponders can be programmed into the SKREEM/WCM. For added system security, each SKREEM/WCM is programmed with a unique Secret Key code. This code is stored in memory, sent over the CAN data bus to the PCM, and is encoded to the transponder of every Sentry Key that is programmed into the SKREEM/WCM. Therefore, the Secret Key code is a common element that is found in every component of the Sentry Key Immobilizer System (SKIS). Another security code, called a PIN, is used to gain access to the SKREEM/WCM Secured Access Mode. The Secured Access Mode is required during service to perform the SKIS initialization and Sentry Key transponder programming procedures. The SKREEM/WCM also stores the Vehicle Identification Number (VIN) in its memory, which it learns through a CAN data bus message from the PCM during SKIS initialization.
In the event that a SKREEM/WCM replacement is required, the Secret Key code can be transferred to the new SKREEM/WCM from the PCM using the diagnostic scan tool and the SKIS initialization procedure. Proper completion of the SKIS initialization will allow the existing Sentry Keys to be programmed into the new SKREEM/WCM so that new keys will not be required. In the event that the original Secret Key code cannot be recovered, SKREEM/WCM replacement will also require new Sentry Keys. The diagnostic scan tool will alert the technician during the SKIS initialization procedure if new Sentry Keys are required.
When the ignition switch is turned to the On position, the SKREEM/WCM transmits an RF signal to the transponder in the ignition key. The SKREEM/WCM then waits for an RF signal response from the transponder. If the response received identifies the key as valid, the SKREEM/WCM sends a valid key message to the PCM over the CAN data bus. If the response received identifies the key as invalid or if no response is received from the key transponder, the SKREEM/WCM sends an invalid key message to the PCM. The PCM will enable or disable engine operation based upon the status of the SKREEM/WCM messages. It is important to note that the default condition in the PCM is an invalid key; therefore, if no message is received from the SKREEM/WCM by the PCM, the engine will be disabled and the vehicle immobilized after two seconds of running.
The SKREEM/WCM also sends security indicator status messages to the EMIC/CCN over the CAN data bus to tell the EMIC/CCN how to operate the security indicator. The security indicator status message from the SKREEM/WCM tells the EMIC/CCN to turn the indicator on for about three seconds each time the ignition switch is turned to the On position as a bulb test. After completion of the bulb test, the SKREEM/WCM sends security indicator status messages to the EMIC/CCN to turn the indicator off, turn the indicator on, or to flash the indicator on and off. If the security indicator flashes or stays on solid after the bulb test, it signifies a SKIS fault. If the SKREEM/WCM detects a system malfunction and/or the SKIS has become inoperative, the security indicator will stay on solid. If the SKREEM/WCM detects an invalid key or if a key transponder-related fault exists, the security indicator will flash. If the vehicle is equipped with the Customer Learn transponder programming feature, the SKREEM/WCM will also send messages to the EMIC/CCN to flash the security indicator whenever the Customer Learn programming mode is being utilized (Refer to 08 - Electrical/Vehicle Theft Security - Standard Procedure) .
The SKIS performs a self-test each time the ignition switch is turned to the On position, and will store fault information in the form of a Diagnostic Trouble Code (DTC) in SKREEM/WCM memory if a system malfunction is detected. The SKREEM/WCM can be diagnosed, and any stored DTC can be retrieved using a diagnostic scan tool. Refer to the appropriate diagnostic information.
DESCRIPTION
The Vehicle Theft Security System (VTSS) is comprised of two primary subsystems: Vehicle Theft Alarm (VTA) and Sentry Key Immobilizer System (SKIS). The VTA is an active system that provides visual and audible responses as deterrents to and warnings of unauthorized vehicle tampering. The SKIS is a passive system that effectively immobilizes the vehicle against unauthorized operation. Following are paragraphs which describe these subsystems of the VTSS.
Certain functions and features of the VTSS rely upon resources shared with or controlled by other electronic modules in the vehicle over the Controller Area Network (CAN) data bus. Other modules that may affect VTSS operation are:
- ElectroMechanical Instrument Cluster (EMIC) - Also sometimes referred to as the Cab Compartment Node (CCN). Driver and passenger front and rear doors, and liftgate ajar switch status. VTA system logic. Security indicator control. (Refer to 08 - Electrical/8J - Instrument Cluster - Description) .
- Powertrain Control Module (PCM) - SKIS engine control logic. (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Powertrain Control - Description) .
- Steering Column Module (SCM) - (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Steering Column - Description) .
- Totally Integrated Power Module (TIPM) - Hood ajar switch status (export only). Exterior lighting system and horn system control (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Totally Integrated Power (TIPM) - Description).
Except for the Sentry Key transponders, which rely upon Radio Frequency (RF) communication, hard wired circuitry connects the VTA and SKIS components to the electrical system of the vehicle.
VEHICLE THEFT ALARM
The VTA is available in two different configurations, one is designed for vehicles manufactured for sale in North America; while the other is designed for vehicles manufactured for sale in markets outside of North America. In addition, the VTA for export is available in two versions: base and premium. All vehicles equipped with VTA are also equipped with the Remote Keyless Entry (RKE) system and the Sentry Key Immobilizer System (SKIS), regardless of their market destination.
The North American and export base version of the VTA system provide perimeter vehicle protection by monitoring the vehicle doors, the ignition switch, the trunk, and for vehicles built for certain markets where it is required equipment, the hood. If unauthorized vehicle use or tampering is detected, these systems respond by pulsing the vehicle horn as an audible deterrent and flashing certain exterior lamps as a visual deterrent.
The export premium version of the VTA system is only available in vehicles manufactured for sale in certain markets where it is required equipment. The export premium version of the VTA provides the same perimeter protection features as the base version, but adds interior vehicle intrusion protection. The export premium VTA also supplements the pulsing horn feature of the base version with a siren as the audible deterrent, while retaining the flashing exterior lamps as the visual deterrent.
The VTA includes the following major components, which are described in further detail elsewhere in this service information:
- Door Ajar Switches - A door ajar switch is integral to the door latch mechanism of each front and rear door.
- Hood Ajar Switch - A hood ajar switch is located in a bracket on the left rear side of the engine compartment, near the shock tower of vehicles built for sale in certain export markets where it is required equipment.
- Intrusion Module - The intrusion module is included on vehicles built for sale in certain export markets where required. The intrusion module on sedan models is located underneath the instrument panel upper panel, just to the right of center of the instrument panel base, next to the remote compass module. The intrusion module and sensors on convertible models are incorporated into the dome lamp assembly.
- Intrusion Sensor Receiver - An intrusion sensor receiver is located behind and mounted to the right A-Pillar trim panel of vehicles built for sale in certain export markets where it is required equipment.
- Intrusion Sensor Transmitter - An intrusion sensor transmitter is located behind and mounted to the left Upper C-Pillar trim panel of vehicles built for sale in certain export markets where it is required equipment.
- Trunk Ajar Switch - A liftgate ajar switch is integral to the latch for the liftgate in the vehicle.
- Security Indicator - A security indicator is integral to the ElectroMechanical Instrument Cluster (EMIC), sometimes referred to as the Cab Compartment Node (CCN).
- Siren - An alarm siren is located in a hollow behind the right front splash shield, on the outer load beam of vehicles built for sale in certain export markets where it is required equipment.
SENTRY KEY IMMOBILIZER SYSTEM
The Sentry Key Immobilizer System (SKIS) is available as factory-installed standard equipment on this model. Vehicles equipped with the Vehicle Theft Alarm (VTA) are also equipped with SKIS. The SKIS provides passive vehicle protection by preventing the engine from operating unless a valid electronically encoded key is detected in the ignition lock cylinder. The SKIS used in combination with the export premium version of the VTA adds a steering shaft lock feature that provides passive protection by preventing the vehicle from being steered unless a valid electronically encoded key is detected in the ignition lock cylinder, but is only available in vehicles manufactured for sale in certain markets where it is required equipment.
The SKIS includes the following major components, which are described in further detail elsewhere in this service information:
- Sentry Key Remote Entry Module - The Sentry Key REmote Entry Module (SKREEM) is sometimes referred to as the Wireless Control Module (WCM). The SKREEM/WCM is located on the instrument panel to the right side of the steering column near the ignition lock cylinder housing and an integral molded plastic antenna ring circles the ignition lock cylinder like a halo. The SKREEM/WCM and its antenna are concealed beneath an ignition switch bezel on the instrument panel.
- Sentry Key Transponder - The Sentry Key transponder is contained within the Remote Keyless Entry (RKE) transmitter integral to the head of the ignition key. (Refer to 08 - Electrical/8Q - Vehicle Theft Security/KEY, Transponder - Description) .
- Security Indicator - A security indicator is integral to the ElectroMechanical Instrument Cluster (EMIC).
OPERATION
The Vehicle Theft Security System (VTSS) is divided into two basic subsystems: Vehicle Theft Alarm (VTA) and Sentry Key Immobilizer System (SKIS). Following are paragraphs that briefly describe the operation of each of these two subsystems.
VEHICLE THEFT ALARM
The ElectroMechanical Instrument Cluster (EMIC) is used on this vehicle to control and integrate many of the functions and features included in the Vehicle Theft Alarm (VTA). The EMIC is also sometimes referred to as the Cab Compartment Node (CCN). In the VTA system, the EMIC receives inputs indicating the status of the door ajar switches, the ignition switch, the liftgate ajar switch and the power lock switches. In vehicles built for certain export markets where it is required, the hood ajar switch provides a hard wired input to the Totally Integrated Power Module (TIPM) and both the TIPM and the Intrusion Transceiver Module (ITM) provide electronic message inputs to the EMIC over the Controller Area Network (CAN) data bus. The EMIC processes the information from all of these inputs, internally controls the security indicator as appropriate, and sends electronic messages to the TIPM over the CAN data bus. The TIPM internally controls the output to the hazard warning lamps and sends a control output to energize or de-energize the horn relay as appropriate. On vehicles with an ITM, the horn output of and the siren output is controlled by the ITM. The export provides the same perimeter protection features as the domestic version, but adds interior vehicle intrusion protection. The VTA also supplements the pulsing horn feature of the domestic version with a siren as the audible deterrent, while retaining the flashing exterior lamps as the visual deterrent.
The hard wired circuits between components related to the VTA system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin out information and location views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the VTA system or the electronic controls and communication between modules and devices that provide some features of the VTA system. The most reliable, efficient and accurate means to diagnose the VTA system or the electronic controls and communication related to VTA system operation requires the use of a diagnostic scan tool. See the Vehicle Theft Security System menu item on the scan tool. Refer to the appropriate diagnostic information.
Following are paragraphs that briefly describe the operation of each of the VTA features.
ENABLING
The EMIC must have the VTA function electronically enabled in order for the VTA to perform as designed. The logic in the EMIC keeps its VTA function dormant until it is enabled using a diagnostic scan tool. The VTA function of the EMIC is enabled on vehicles equipped with the VTA option at the factory, but a service replacement EMIC must be VTA-enabled by the dealer using a diagnostic scan tool. Refer to the appropriate diagnostic information.
ARMING
Passive arming of the VTA occurs when the vehicle is exited with the key removed from the ignition switch, the headlamps are turned OFF, and the doors are locked while they are open using the power lock switch. Active arming occurs when the LOCK button on the Remote Keyless Entry (RKE) transmitter is depressed to lock the vehicle. For active arming to occur, the doors and the liftgate must be closed and the ignition switch must be in the OFF position when the RKE transmitter LOCK button is depressed. The power lock switch will not function if the key is in the ignition switch or the headlamps are turned ON with the driver side front door open.
Pre-arming of the VTA is initiated when the vehicle is locked using a power door lock switch or when the RKE transmitter LOCK button is depressed. Pre-arming will not occur if the key is in the ignition switch or the headlamps are turned ON with the driver side front door open. When the VTA is pre-armed, the arming sequence is delayed until all of the doors and the liftgate have been closed. The VTA will remain in pre-armed mode for up to 16 seconds after all doors and the liftgate have been closed.
Once the VTA begins the passive or active arming sequence, the security indicator in the instrument cluster will flash rapidly for about 16 seconds. This indicates that VTA arming is in progress. If the ignition switch is turned to the ON position, if a door or the liftgate is unlocked or opened by any means, or if the RKE PANIC button (if equipped) is depressed during the 16 second arming process, the security indicator will stop flashing and the arming process will abort. Once the arming sequence is successfully completed, the security indicator will flash at a slower rate, indicating that the VTA is armed.
On vehicles equipped with the hood ajar switch, the VTA arming sequence will occur regardless of whether the hood is open or closed, but the security indicator will illuminate solid and the under hood area will not be protected unless the hood is closed when the VTA arming sequence begins. Also, if the status of the hood ajar switch changes from open to closed during the 16 second arming process, the security indicator will switch from solid to flashing and the VTA arming sequence will abort. Once the arming process is successfully completed, the security indicator will flash at a slower rate, indicating that the VTA is armed.
DISARMING
Passive disarming of the VTA occurs by inserting a valid Sentry Key Immobilizer System (SKIS) key into the ignition lock cylinder or by turning the ignition switch to the ON position. Active disarming of the VTA for all markets occurs when the vehicle is unlocked by depressing the UNLOCK button of the RKE transmitter. Once the alarm has been activated, either disarming method will also deactivate the alarm. Depressing the PANIC button (if equipped) on the RKE transmitter will not disarm the VTA.
POWER-UP MODE
When the armed VTA senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTA was armed prior to a battery disconnect or failure, the technician or vehicle operator will have to actively or passively disarm the alarm system after the battery is reconnected. The power-up mode will also apply if the battery goes dead while the system is armed, and battery jump-starting is attempted. The VTA will be armed until the technician or vehicle operator has actively or passively disarmed the alarm system. If the VTA is in the disarmed mode prior to a battery disconnect or failure, it will remain disarmed after the battery is reconnected or replaced, or if jump-starting is attempted.
ALARM
The VTA alarm output varies by the version of the VTA with which the vehicle is equipped. In all cases, the alarm provides both visual and audible outputs; however, the time intervals of these outputs vary by the requirements of the market for which the vehicle is manufactured. In all cases, the visual output will be a flashing ON and OFF of the exterior lamps. For vehicles equipped with the North American or the export base version of the VTA, the audible output will be a pulsing of the horn. For vehicles with the export premium version of the VTA, the audible output will be a cycling of the alarm siren. The inputs that will trigger the alarm include the ignition switch, the door ajar switches, the liftgate ajar switch and, in vehicles built for certain markets where they are required, the hood ajar switch and the ITM.
TAMPER ALERT
Vehicles built for sale in the domestic market have a VTA tamper alert feature that will pulse the horn three times upon VTA disarming if the alarm was triggered and has since timed out, or if the battery has been disconnected and reconnected. This feature alerts the vehicle operator that the VTA alarm was activated while the vehicle was unattended.
INTRUSION ALARM
The intrusion alarm is an exclusive feature of the export premium version of the VTA, which is only available in certain markets where it is required. When the VTA is armed, the ITM uses an ultrasonic transmitter and receiver which allows the module to monitor the interior of the vehicle for movement. If motion is detected, the ITM sends an electronic message to the EMIC and the TIPM over the CAN data bus to invoke the visual alarm features, and sends an electronic message to the alarm siren in the engine compartment over a dedicated serial bus to invoke the audible alarm feature.
The motion detect feature of the intrusion alarm can be disabled by depressing the LOCK button on the RKE transmitter 3 times within 15 seconds during VTA arming, while the security indicator is still flashing rapidly. The VTA provides a single short siren chirp as an audible confirmation that the motion detect disable request has been received.
The ITM must be electronically enabled in order for the intrusion alarm to perform as designed. The intrusion alarm function of the ITM is enabled on vehicles equipped with this option at the factory, but a service replacement ITM must be configured and enabled by the dealer using a diagnostic scan tool. Refer to the appropriate diagnostic information. The ITM monitors the conditions of the ultrasonic transmitter and receiver as well as the siren, and will store fault information in the form of a Diagnostic Trouble Code (DTC) if a system malfunction is detected. The ITM may be diagnosed, and any stored DTC can be retrieved using a diagnostic scan tool. Refer to the appropriate diagnostic information.
SENTRY KEY IMMOBILIZER SYSTEM
The Sentry Key Immobilizer System (SKIS) is designed to provide passive protection against unauthorized vehicle use by disabling the engine after about two seconds of running whenever any method other than a valid Sentry Key is used to start the vehicle. The SKIS is considered a passive protection system because it is always active when the ignition system is energized and does not require any customer intervention. The SKIS uses Radio Frequency (RF) communication to obtain confirmation that the key in the ignition switch is a valid key for operating the vehicle. The microprocessor-based SKIS hardware and software also uses electronic messages to communicate with other electronic modules in the vehicle over the Controller Area Network (CAN) data bus. (Refer to 08 - Electrical/8E - Electronic Control Modules/COMMUNICATION - Operation) .
Pre-programmed Sentry Key transponders are provided with the vehicle from the factory. Each Sentry Key REmote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM) will recognize a maximum of eight Sentry Keys. If the customer would like additional keys other than those provided with the vehicle, they may be purchased from any authorized dealer. These additional keys must be programmed to the SKREEM in the vehicle in order for the system to recognize them as valid keys. This can be done by the dealer using a diagnostic scan tool or, if Customer Learn programming is an available SKIS feature in the market where the vehicle was purchased, the customer can program the additional keys, as long as at least two valid Sentry Keys are already available. (Refer to 08 - Electrical/8Q - Vehicle Theft Security - Standard Procedure) .
The SKREEM performs a self-test of the SKIS each time the ignition switch is turned to the ON position, and will store fault information in the form of a Diagnostic Trouble Code (DTC) if a system malfunction is detected. The SKREEM will also send an electronic message to the instrument cluster if a fault is detected, and the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) illuminates the security indicator as appropriate.
The hard wired circuits between components related to the SKIS may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin out information and location views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the SKIS or the electronic controls and communication between other modules and devices that provide some features of the SKIS. The most reliable, efficient and accurate means to diagnose the SKIS or the electronic controls and communication related to SKIS operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
DESCRIPTION:
The Sentry Key Remote Entry Module (SKREEM) (3), sometimes referred to as the Wireless Control Module (WCM), performs the functions of what used to be the Sentry Key Immobilizer Module (SKIM), the Remote Keyless Entry (RKE) Module, and the Tire Pressure Monitoring (TPM) System.
The SKREEM/WCM is located on and around (antenna ring) (4) the ignition key cylinder (2) along with the ignition switch (1). It is accessible only from behind the instrument panel, to the left of the steering column. Serviceability requires lock cylinder removal to access the complete unit.
SENTRY KEY REMOTE ENTRY SYSTEM
The Sentry Key REmote Entry System (SKREES), sometimes referred to as the Sentry Key Immobilizer System (SKIS), authenticates an electronically coded Transponder Key placed into the ignition and sends a valid/invalid key message to the Powertrain Control Module (PCM) based upon the results. The VALID/INVALID KEY message communication is performed using a rolling code algorithm via the Programmable Controller Area Network (CAN) data bus. A VALID KEY message must be sent to the Powertrain Control Module (PCM) within two seconds of ignition ON to free the engine from immobilization.
REMOTE KEYLESS ENTRY
The Remote Keyless Entry (RKE) transmitter uses radio frequency signals to communicate with the SKREEM/WCM. The SKREEM/WCM is on the Controller Area Network (CAN) data bus network. When the operator presses a button on the transmitter, it sends a specific request to the SKREEM/WCM. In turn the SKREEM/WCM sends the appropriate request over the CAN data bus to the Integrated Power Module (IPM) to activate the park lamps, the headlamps and the horn for horn chirp.
OPERATION:
SENTRY KEY REMOTE ENTRY SYSTEM
The Sentry Key Remote Entry Module (SKREEM), sometimes referred to as the Wireless Control Module (WCM), receives an encrypted Radio Frequency (RF) signal from the transponder key. The SKREEM/WCM then decrypts the signal and broadcasts the requested remote commands to the appropriate modules in the vehicle over the Controller Area Network (CAN) data bus. A valid transponder key ID must be incorporated into the RF signal in order for the SKREEM/WCM to pass the message on to the appropriate modules.
Automatic transponder key synchronization is done by the SKREEM/WCM if a valid transponder key is inserted into the ignition cylinder, and the ignition is turned ON. This provides a maximum operation window for RKE functions.
Each Sentry Key Remote Entry System (SKREES), sometimes referred to as the Sentry Key Immobilizer System (SKIS), consists of a SKREEM/WCM and a transponder key. Each system has a secret key code unique to that system. The secret key is electronically coded in the SKREEM/WCM and in all programmed transponder keys. It is used for immobilization and RKE functions for data security. In addition, each transponder key will have a unique identification.
NOTE: After a SKREEM/WCM is replaced, the ignition/transponder keys need to be programmed to the new SKREEM/WCM. Follow the directions on the diagnostic scan tool. The transponder key for the SKREES/SKIM and the RKE will both be programmed during this operation. There is no need to program the fob of the key for RKE functionality once the transponder key is programmed to the new SKREEM/WCM.
REMOTE KEYLESS ENTRY
After pressing the Lock button on the Remote Keyless Entry (RKE) transmitter, all of the door locks will lock, the illuminated entry will turn Off the interior lighting (providing all doors are closed) and the Vehicle Theft Security System (VTSS) (if equipped) will arm. After pressing the Unlock button on the RKE transmitter one time, the driver door will unlock, the illuminated entry will turn on the interior lighting and the VTSS (if equipped) will disarm. After pressing the Unlock button a second time, the remaining doors will unlock. The Electronic Vehicle Information Center (EVIC) or a scan tool can reprogram this feature to unlock all of the door locks with one press of the Unlock button. If the vehicle is equipped with the memory system, the memory message will identify which transmitter (1 or 2) sent the signal. Refer to Overhead Console/Electronic Vehicle Information Center for more information on customer programmable features.
The SKREEM/WCM is capable of retaining up to 8 individual access codes (8 transmitters). If the PRNDL is in any position except Park, the SKREEM/WCM will disable the RKE. The 4 button transmitter uses 1 - CR2032 battery. The minimum battery life is approximately 4.7 years based on 20 transmissions a day at 84° F (25° C). Use a scan tool or the Miller Tool 9001 RF Detector to test the RKE transmitter. Use a scan tool or the customer programming method to program the RKE system. However, the SKREEM/WCM will only allow RKE programming when the ignition is in the ON position, the PRNDL is in Park position and the VTSS (if equipped) is disarmed.
NOTE: After a SKREEM/WCM is replaced, the ignition/transponder keys need to be programmed to the new SKREEM/WCM. Follow the directions on the diagnostic scan tool. The transponder key for the SKREES/SKIM and the RKE will both be programmed during this operation. There is no need to program the fob of the key for RKE functionality once the transponder key is programmed to the new SKREEM/WCM.
TIRE PRESSURE MONITORING
The SKREEM monitors the signals from the tire pressure sensor/transmitters and determines if any tire has gone below a low pressure threshold.
INSTALLATION:
NOTE: After a SKREEM/WCM is replaced, the ignition/transponder keys need to be programmed to the new SKREEM/WCM. Follow the directions on the diagnosti:c scan tool. The transponder key for the SKREES/SKIM and the RKE will both be programmed during this operation. There is no need to program the fob of the key for RKE functionality once the transponder key is programmed to the new SKREEM/WCM.
NOTE: When a PCM and the SKREEM/WCM are replaced at the same time, perform the following steps in order:
NOTE: The WIN/SKREEM/WCM initialization procedure is required whenever the WIN/SKREEM/WCM or shaft lock module is replaced on vehicles equipped with the shaft lock module. (Refer to 08 - Electrical/8Q - Vehicle Theft Security - Standard Procedure) .
- Program the new PCM.
- Program the new SKREEM/WCM.
- Program all ignition/transponder keys to the new SKREEM/WCM.
(Refer to 08 - Electrical/8E - Electronic Control Modules - Standard Procedure) .
1. Position the WCM on the ignition lock housing. Make sure the locking tabs are engaged into the ignition switch then install the retaining screw (1).
2. Position the ignition switch lock cylinder assembly up in behind the instrument panel.
1. Position the ignition switch into the ignition switch bracket ensuring that the lock tab secures the switch to the bracket.
1. Connect the WCM antenna (2) to the WCM module.
2. Install the two ignition switch mounting screws (1) and the one upper screw from the ignition cylinder support.
1. Install the ignition switch support bracket screw (1).
2. Install the shift interlock cable into the ignition switch.
1. Reconnect the ignition switch electrical connector (6) and the WCM electrical connector (5).
2. Install the instrument cluster. (Refer to 08 - Electrical/8J - Instrument Cluster - Installation) .
3. Install the instrument cluster trim bezel. (Refer to 23 - Body/Instrument Panel/BEZEL, Instrument Cluster)
4. Install the steering column shroud and secure with three screws.
5. Install the lower instrument knee blocker. (Refer to 23 - Body/Instrument Panel/KNEEBLOCKER - Installation) .
6. Install the lower steering column opening cover. (Refer to 23 - Body/Instrument Panel/COVER, Steering Column ) .
7. Install the radio. (Refer to 08 - Electrical/8A - Audio and Video/RADIO - Installation) .
8. Install the upper center instrument panel trim bezel. (Refer to 23 - Body/Instrument Panel/BEZEL, Instrument Panel ) .
9. Reconnect the negative cable to the battery.
SENTRY KEY IMMOBILIZER SYSTEM INITIALIZATION
The Sentry Key Immobilizer System (SKIS) must be initialized following a Sentry Key REmote Entry Module (SKREEM), sometimes referred to as the Wireless Control Module (WCM), replacement. SKIS initialization requires the use of a diagnostic scan tool. Initialization will also require that you have access to the unique four-digit PIN code that was assigned to the original SKREEM/WCM. The PIN code MUST be used to enter the Secured Access Mode in the SKREEM/WCM. This PIN number may be obtained from the vehicle owner, from the original vehicle invoice, or from the Chrysler Customer Center (Refer to 08 - Electrical/8E - Electronic Control Modules - Standard Procedure) .
NOTE: If a Powertrain Control Module (PCM) is replaced on a vehicle equipped with the Sentry Key Immobilizer System (SKIS), the unique Secret Key data must be transferred from the Sentry Key REmote Entry Module (SKREEM) to the new PCM using the appropriate programming procedure. This procedure also requires the use of a diagnostic scan tool and the unique four-digit PIN code to enter the Secured Access Mode in the SKREEM/WCM.
SENTRY KEY TRANSPONDER PROGRAMMING
All Sentry Keys included with the vehicle are pre-programmed to work with the Sentry Key Immobilizer System (SKIS) when it is shipped from the factory. The Sentry Key REmote Entry Module (SKREEM) can be programmed to recognize up to a total of eight Sentry Key transponders. When programming a blank Sentry Key transponder, the key must first be cut to match the ignition switch lock cylinder in the vehicle for which it will be used. Once the additional or new key has been cut, the SKREEM must be programmed to recognize it as a valid key. There are two possible methods to program the SKREEM to recognize a new or additional valid key, the Secured Access Method and the Customer Learn Method. Following are the details of these two programming methods.
SECURED ACCESS METHOD
The Secured Access method applies to all vehicles. This method requires the use of a diagnostic scan tool. This method will also require that you have access to the unique four-digit PIN code that was assigned to the original SKREEM. The PIN code must be used to enter the Secured Access Mode in the SKREEM. This PIN number may be obtained from the vehicle owner, from the original vehicle invoice, or from the Chrysler Customer Center. Refer to the appropriate diagnostic information for the proper Secured Access method programming procedures.
NOTE: The Remote Keyless Entry (RKE) Transmitter will also be programmed during this procedure.
CUSTOMER LEARN METHOD
The Customer Learn feature is only available on domestic vehicles, or those vehicles which have a U.S. country code designator. This programming method also requires access to at least two valid Sentry Keys. If two valid Sentry Keys are not available, or if the vehicle does not have a U.S. country code designator, the Secured Access Method must be used to program new or additional valid keys to the SKREEM. The Customer Learn programming method procedures are as follows:
1. Obtain the blank Sentry Key(s) that are to be programmed as valid keys for the vehicle. Cut the blank key(s) to match the ignition switch lock cylinder mechanical key codes.
2. Insert one of the two valid Sentry Keys into the ignition switch and turn the ignition switch to the On position.
3. After the ignition switch has been in the On position for longer than 3 seconds, but no more than 15 seconds, cycle the ignition switch back to the Off position. Replace the first valid Sentry Key in the ignition switch lock cylinder with the second valid Sentry Key and turn the ignition switch back to the On position. The second valid Sentry Key must be inserted in the lock cylinder within 15 seconds of removing the first valid key.
4. About 10 seconds after the completion of Step #3 , the security indicator in the instrument cluster will start to flash to indicate that the system has entered the Customer Learn programming mode.
5. Within 60 seconds of entering the Customer Learn programming mode, turn the ignition switch to the Off position, replace the valid Sentry Key with a blank Sentry Key transponder, and turn the ignition switch back to the On position.
6. About 10 seconds after the completion of Step #5 , the security indicator will stop flashing, stay on solid for 3 seconds, then turn off to indicate that the blank Sentry Key has been successfully programmed. The SKIS will immediately exit the Customer Learn programming mode. After the ignition is cycled the vehicle may be started using the newly programmed valid Sentry Key.
NOTE: The Remote Keyless Entry (RKE) Transmitter will also be programmed during this procedure.
Each of these steps must be repeated and completed in their entirety for each additional Sentry Key that is to be programmed. If the above steps are not completed in the given sequence, or within the allotted time, the SKREEM will exit the Customer Learn programming mode and the programming will be unsuccessful. The SKREEM will also automatically exit the Customer Learn programming mode if it sees a non-blank Sentry Key transponder when it should see a blank, if it has already programmed eight (8) valid Sentry Keys or if the ignition switch is turned to the Off position for more than about 50 seconds.
NOTE: If an attempt is made to start the vehicle while in the Customer Learn mode (security indicator flashing), the SKIS will respond as though the vehicle were being started with an invalid key. In other words, the engine will stall after about two seconds of operation. No faults will be set.
NOTE: Once a Sentry Key has been programmed as a valid key to a vehicle, it cannot be programmed as a valid key for use on any other vehicle.
