Power Locks

DESCRIPTION

DESCRIPTION

A power operated door and swing gate lock system is standard factory-installed equipment on this vehicle. The power lock system allows all of the doors and the swing gate to be locked or unlocked electrically. Locking or unlocking the vehicle using the power lock system can be accomplished by two different methods:

• Power Lock System - Operating a power lock system switch on either front door inside trim panel will lock or unlock the latches of the doors and the swing gate.
• Remote Keyless Entry System - Depressing the Lock or Unlock button of the Remote Keyless Entry (RKE) system transmitter can also be used to lock or unlock the latches of the doors and the swing gate. The specific locks operated and the number of FOBIK button presses required varies depending upon the Customer Programmable settings chosen by the vehicle operator.

Additional details of each of these subsystems and their components can be found in the subheadings and paragraphs that follow.

POWER LOCK SYSTEM

The power lock system includes the following major components, which are described in further detail elsewhere in this service information:

• Electronic Vehicle Information Center - The Electronic Vehicle Information Center (EVIC) is a digital display integral to the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN), which is located on the instrument panel in front of the driver. (Refer to 08 - Electrical/8M - Message Systems/Message Center/CENTER, Electronic Vehicle Information - Description) .
• Power Lock Motors - A reversible electric power lock motor is integral to the latch of each front and rear door and the swing gate.
• Power Lock Switches - A power lock switch is located just forward of the arm rest of each front door inside trim panel.
• Totally Integrated Power Module - The Totally Integrated Power Module (TIPM) is located in the engine compartment. (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Totally Integrated Power (TIPM) - Description).

These components and their controls are combined to provide the following power lock system central locking and unlocking features:

• Automatic Door Locking - Automatic door locking (also known as rolling door locks) automatically locks any unlocked door when the vehicle speed exceeds about 25.7 kilometers per hour (15 miles per hour). This is a Customer Programmable feature.
• Automatic Door Unlocking - Automatic door unlocking (also known as automatic unlock doors on exit) automatically unlocks the doors after they were automatically locked when the vehicle speed exceeded about 25.7 kilometers per hour (15 miles per hour), the vehicle speed has returned to zero, the transmission shift lever is in the Neutral or Park positions and the driver side front door is opened. This is a Customer Programmable feature.
• Customer Programmable Features - The vehicle operator interfaces with the TIPM, which is the power lock system controller, using the EVIC. An EVIC switch pod located on the left horizontal spoke of the steering wheel allows the vehicle operator to set or change the power lock system Customer Programmable Features through the EVIC display.
• Door Lock Inhibit - Prevents locking the doors using a power door lock switch or the Lock button of the Remote Keyless Entry (RKE) system transmitter if the key is in the ignition and the driver side front door is open.
• Enhanced Accident Response System - In the event of a vehicle impact that causes airbag deployment but leaves vehicle electrical power intact, the Enhanced Accident Response System (EARS) automatically turns OFF the supply of fuel to the engine, turns ON the interior courtesy lamps, turns ON the hazard warning flashers and unlocks the doors after the vehicle speed has returned to zero. This helps emergency responders in their efforts to render the appropriate assistance. The courtesy lamps and hazard flashers remain ON as long as the battery has power or until the key is removed from the ignition.
• Illuminated Entry - Automatic illumination of the interior courtesy lamps when the vehicle is unlocked using the power lock system.

Hard wired circuitry connects the power lock system components to the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system and to the power lock system components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

REMOTE KEYLESS ENTRY SYSTEM

The Remote Keyless Entry (RKE) system is available factory-installed equipment on this vehicle. The RKE system includes the following major components, which are described in further detail elsewhere in this service information:

• Electronic Vehicle Information Center - The Electronic Vehicle Information Center (EVIC) is a digital display integral to the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN), which is located on the instrument panel in front of the driver. (Refer to 08 - Electrical/8M - Message Systems/Message Center/CENTER, Electronic Vehicle Information - Description) .
• Remote Keyless Entry System Transmitter - The RKE system transmitter is the battery powered, wireless and portable Radio Frequency (RF) user controller for all of the features of the RKE system.
• Sentry Key REmote Entry Module - The Sentry Key REmote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM or the Sentry Key Immobilizer Module/SKIM) is the RKE system control module and RF receiver located on the steering column, adjacent to the ignition lock cylinder. (Refer to 08 - Electrical/8Q - Vehicle Theft Security/MODULE, Sentry Key Immobilizer (SKREEM) - Description).

These components and their controls are combined to provide the following RKE system features:

• Customer Programmable Features - The vehicle operator interfaces with the SKREEM, which is the RKE system controller, using the EVIC. An EVIC switch pod located on the left horizontal spoke of the steering wheel allows the vehicle operator to set or change the RKE system Customer Programmable Features through the EVIC display.
• Flash Lights With Lock And Unlock? - This is a Customer Programmable feature of the RKE system. The first option has the park lamps flash as an optical verification that the RKE system has received a valid Lock or Unlock request from the RKE transmitter. The second option disables the optical verification feature.
• Panic Feature - In certain markets the RKE transmitter may also be equipped with a red Panic button. Depressing the Panic button of the RKE transmitter while within transmitter range will sound the vehicle signal horn and flash the exterior lighting of the vehicle for about three minutes or until the Panic button is depressed a second time, whichever occurs first. Attaining a vehicle speed of about 25.7 kilometers per hour (15 miles per hour) will also cancel the panic event.
• Programming Additional Transmitters - Two RKE transmitters are shipped with the vehicle from the factory, but the RKE system can retain the vehicle access codes of up to a total of eight transmitters. The transmitter codes are retained in the RKE system controller memory, even if the battery is disconnected. If a RKE transmitter is ineffective, lost or an additional transmitter is desired, new transmitter vehicle access codes can be programmed into the system using a diagnostic scan tool.
• Remote Locking - Depressing the Lock button of the RKE transmitter while within transmitter range will lock all of the vehicle doors and the swing gate.
• Remote Engine Start - On vehicles equipped with the optional Remote Starting System, depressing the Remote Start button of the RKE transmitter twice while within transmitter range will start the engine of the vehicle. (Refer to 08 - Electrical/8F - Engine Systems/Starting - Description) .
• Remote Unlocking - Depressing the Unlock button of the RKE transmitter while within transmitter range will unlock the vehicle and activate the Illuminated Entry System. The specific locks operated and the number of RKE transmitter button presses required varies depending upon the Customer Programmable settings chosen by the vehicle operator.
• Remote Unlock Sequence - This is a Customer Programmable feature of the RKE system. There are two options available. The first option allows only the driver side front door to unlock when the RKE transmitter Unlock button is depressed one time, and the remaining doors unlock when the button is depressed a second time within 5 seconds of the first press. The second option allows all doors and the swing gate to unlock upon a single press of the RKE transmitter Unlock button.
• Sound Horn On Lock? - This is a Customer Programmable feature of the RKE system. There are two options available. The first option has the signal horn of the vehicle sound a short chirp as an audible verification that the RKE system received a valid Lock request from the RKE transmitter. The second option disables the audible verification feature.
• Vehicle Theft Security System Arming - If the vehicle is equipped with the optional Vehicle Theft Security System (VTSS), depressing the Lock button of the RKE transmitter while within transmitter range will arm the VTSS in addition to activating the remote locking feature. (Refer to 08 - Electrical/8Q - Vehicle Theft Security - Description) .
• Vehicle Theft Security System Disarming - If the vehicle is equipped with the optional Vehicle Theft Security System (VTSS), depressing the Unlock button of the RKE transmitter while within transmitter range will disarm the VTSS in addition to activating the remote unlocking feature. (Refer to 08 - Electrical/8Q - Vehicle Theft Security - Description) .

Hard wired circuitry connects many of the RKE system components to the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system and to the RKE system components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

OPERATION

OPERATION

POWER LOCK SYSTEM

The power lock system uses non-switched battery current received through a fused B(+) fuse in the Totally Integrated Power Module (TIPM) so that the system remains operational regardless of the ignition switch position. The TIPM is the primary power lock system controller. The power lock switches are hard wired to the TIPM. When the TIPM receives an input from a power lock switch, it responds by providing the appropriate outputs to each of the power lock motors to lock or unlock each of the door and swing gate latches.

The TIPM also stores the power lock system Customer Programmable feature settings received over the CAN data bus from the Electronic Vehicle Information Center (EVIC) circuitry of the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN). The TIPM uses these settings and internal programming along with hard wired and electronic message inputs to determine the proper outputs needed to produce each of the appropriate power lock system features.

The power lock system circuits are continually monitored and controlled by the microprocessor and software contained within the TIPM. When the TIPM monitors a problem in any of the power lock system circuits or components, it stores a fault code or Diagnostic Trouble Code (DTC) in its memory circuit. The hard wired circuits between components related to the power lock 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 power lock system or the electronic controls or communication between other modules and devices that provide features of the power lock system. The most reliable, efficient, and accurate means to diagnose the power lock system or the electronic controls and communication related to power lock system operation, as well as the retrieval or erasure of a DTC requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.

REMOTE KEYLESS ENTRY SYSTEM

The Remote Keyless Entry (RKE) system uses non-switched battery current received through a fused B(+) fuse in the Totally Integrated Power Module (TIPM) so that the system remains operational regardless of the ignition switch position. The Sentry Key REmote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM or the Sentry Key Immobilizer Module/SKIM) is the primary RKE system controller as well as the Radio Frequency (RF) RKE receiver. The SKREEM validates the vehicle access code of each RKE transmitter from which it receives RF signal inputs. It ignores requests from any transmitter for which it has no stored vehicle access code.

The SKREEM communicates and shares resources with the TIPM and many other electronic modules in the vehicle over the CAN data bus. The SKREEM also stores the RKE system Customer Programmable feature settings received over the CAN data bus from the EVIC circuitry of the CCN. When the SKREEM receives an input from a valid transmitter source, it uses these settings and internal programming to send the appropriate electronic request messages to the TIPM and other electronic modules over the CAN data bus to invoke the proper RKE system features and responses.

The RKE system circuits and transmitter inputs are continually monitored by the microprocessor and software contained within the SKREEM. When the SKREEM monitors a problem in any of the RKE system circuits or transmitters, it stores a DTC in its memory circuit. The hard wired circuits between components related to the RKE 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 RKE system or the electronic controls or communication between other modules and devices that provide features of the RKE system. The most reliable, efficient, and accurate means to diagnose the RKE system or the electronic controls and communication related to RKE system operation, as well as the retrieval or erasure of a DTC requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.

DIAGNOSIS AND TESTING - POWER LOCKS

DIAGNOSIS AND TESTING - POWER LOCKS

The most reliable, efficient, and accurate means to diagnose the power lock system requires the use of a scan tool and the proper Diagnostic Procedures manual. The scan tool can provide confirmation that the Control Area Network (CAN) is functional, that all of the electronic modules are sending and receiving the proper messages on the CAN data bus, and that the power lock motors are being sent the proper hard wired outputs by the relays for them to perform their power lock system functions.

DOUBLE ACTIVATION UNLOCK

DOUBLE ACTIVATION UNLOCK

The toggling of the double activation unlock feature (between enabled and disabled) can be performed with the use of the scan tool, or by the customer.

SCAN TOOL PROGRAMMING

When using the scan tool, select:

1. “CCN”

 
2. “Miscellaneous Functions”

 

and then the desired function.

CUSTOMER PROGRAMMING

1. Open the driver door, sit in the driver seat, and close the driver door.

 
2. Turn the ignition switch to the RUN position (without starting the vehicle) and then back to OFF. Repeat this step three additional times (for a total of four key ON/OFF cycles).

 
3. Within 10 seconds of switching the ignition switch to the OFF position for the last time (at the end of the fourth cycle in the above step), press the driver interior door lock switch to UNLOCK.

 
4. A single chime will be heard to verify that the customer programmable toggle of the double activation unlock was successfully completed.

 

Steps 2 and 3 must be completed within 10 seconds.

STANDARD PROCEDURE - AUTOMATIC DOOR LOCK AND UNLOCK

STANDARD PROCEDURE - AUTOMATIC DOOR LOCK AND UNLOCK

The toggling of the automatic door lock (also known as rolling door locks) feature and the automatic door unlock (also known as unlock doors on exit) feature (between enabled and disabled) can be performed with the use of the scan tool or by the customer.

SCAN TOOL PROGRAMMING

When using the scan tool, select:

1. Theft Alarm

 
2. VTSS

 
3. Miscellaneous Functions

 
4. Select the desired function.

 

CUSTOMER PROGRAMMING

AUTOMATIC LOCK (ROLLING LOCKS)

1. Open the driver door, sit in the driver seat and close the driver door.

 
2. Turn the ignition switch to the ON position (without starting the vehicle) and then back to the OFF position. Repeat this cycle three additional times for a total of four ignition switch cycles.

 
3. Within 10 seconds of switching the ignition switch to the OFF position at the end of the fourth cycle in the above step, press the driver interior door lock switch in the LOCK direction to lock the doors.
   
   

   NOTE:

   Steps 2 and 3 must be completed within 10 seconds.


 
4. A single chime will be heard to verify that the customer programmable toggle of the automatic door locks was successfully completed.

 

AUTOMATIC UNLOCK (UNLOCK ON EXIT)

1. Open the driver door, sit in the driver seat and close the driver door.

 
2. Turn the ignition switch to the ON position (without starting the vehicle) and then back to the OFF position. Repeat this cycle three additional times for a total of four ignition switch cycles.

 
3. Within 10 seconds of switching the ignition switch to the OFF position at the end of the fourth cycle in the above step, press the driver interior door lock switch in the UNLOCK direction to unlock the doors.
   
   

   NOTE:

   Steps 2 and 3 must be completed within 10 seconds.


 
4. A single chime will be heard to verify that the customer programmable toggle of the automatic door unlock was successfully completed.