Power Locks: Description and Operation
POWER DOOR LOCKSAll doors can be locked or unlocked electrically by operating the switch on either front door panel. When the door lock switch is activated, the Remote Keyless Entry Module provides power to the door lock motors through relays internal to the module.
All doors can also be locked or unlocked mechanically and independently with their respective locking knobs. The front doors can also be unlocked by actuation of the inside remote door handle.
The power lock motors are equipped with a thermal protection system which prevents the motors from burning out. The motors may chatter if they are continuously activated.
The power lock motor is integral to the door latch. If there is a problem with the motor the entire latch must be replaced. Refer to Body, Doors - Front (or Rear), Latch, Removal, and Installation.
The Remote Keyless Entry (RKE) Module also controls the Vehicle Theft Security System (VTSS).
The RKE Module has three modes of operation including customer usage mode, dealer lot storage mode, and shipping mode. The customer usage mode provides full functionality of the module and is the mode in which the RKE module should be operating when used by the customer. Dealer lot storage mode and shipping modes are reduced power modes meant to extend vehicle battery life during shipping and storage in the dealer lot. Dealer lot storage mode provides limited VTSS and power door lock functions, but disables the Remote Keyless Entry (RKE) functions. This mode is intended to be used when the vehicle is on the dealer lot to provide VTSS coverage of the vehicle while minimizing battery drain. Shipping mode disables all normal functions (i.e. power door locks, RKE, and VTSS) of the module, and is intended to be used when the vehicle is shipped from the assembly plant.
NOTE: The dealer must remove the module from "SHIP MODE" and place the RKE Module into either the "DEALER LOT" storage or "CUSTOMER USAGE" modes of operation after receiving the vehicle from the assembly plant. Refer to Electrical, Vehicle Theft Security, Service Procedures - Switching Operating Modes/Configuring A New Module.
REMOTE KEYLESS ENTRY SYSTEM
The system allows locking and unlocking of vehicle door(s), deck lid release, and panic by remote control using a hand held radio frequency transmitter. The vehicle must be in PARK before the trunk lid can be unlatched with the transmitter.
The receiver may receive signals from up to four transmitters. Each transmitter has its own code, and the code is programmed and stored into receiver memory. If a transmitter is replaced or additional transmitters are added, the codes for all units have to be reprogrammed into the receiver memory. If a receiver module is replaced, the transmitter codes must be stored in the new receiver memory.
The transmitter has four buttons for operation. They are LOCK, UNLOCK, DECK LID RELEASE, and PANIC.
- The UNLOCK button will unlock the driver's door and enable illuminated entry. Pushing and releasing the button once will unlock the driver's door. Pushing and releasing the button two times, within a five second interval, will unlock all doors.
- Upon pressing the LOCK button, the horn will sound a short CHIRP (if enabled) and flash the park lamps to notify that the all door lock signal was received and set. Illuminated entry is cancelled and the interior lamps are faded to OFF.
- Pushing and releasing the DECK LID RELEASE button (one or two times depending on customer preference) within a two second interval, will slightly ajar the deck lid.
- Pushing and holding the PANIC button will cause the panic alarm to sound for three minutes, until the panic button is pressed and held a second time, or the vehicle reaches a speed of 15 mph.
The receiver is capable of retaining a Vehicle Access Code (VAC) even when power is removed.
Each Remote Keyless Entry (RKE) module must have at least one and no more than four transmitters.
The RKE module has three modes of operation including customer usage mode, dealer lot storage mode, and shipping mode. The customer usage mode provides full functionality of the module and is the mode in which the RKE module should be operating when used by the customer. Dealer lot storage mode and shipping modes are reduced power modes meant to extend vehicle battery life during shipping and storage in the dealer lot. Dealer lot storage mode provides limited VTSS and power door lock functions, but disables the Remote Keyless Entry RKE. functions. This mode is intended to be used when the vehicle is on the dealer lot to provide VTSS coverage of the vehicle while minimizing battery drain. Shipping mode disables all normal functions (i.e. power door locks, RKE, and VTSS) of the module, and is intended to be used when the vehicle is shipped from the assembly plant.
NOTE: The module must be in the "CUSTOMER USAGE" mode of operation for the remote keyless entry system to function.
ROLLING DOOR LOCKS
The system includes the rolling door locking feature. The vehicle is shipped with the system enabled. When the system is disabled the door locks will work by use of the door lock switches and the Remote Key- less Entry system only. When the rolling door lock system is enabled, the RKE module will automatically lock all the vehicle doors when all of the following conditions are met:
- All doors are closed
- The vehicle speed exceeds 15 ± 1 mph.
- The throttle position sensor tip-in is greater than 10 ± 2 degrees.
The RKE module will automatically re-lock all doors if the above conditions are met and if any of the doors become ajar and then closed again.
The enabling/disabling of the rolling door lock feature is customer programmable, as well as programmable with the DRB III scan tool.
DOOR LOCK INHIBIT
With the key in the ignition switch and the driver door open, the Remote Keyless Entry (RKE) Module will ignore the command to lock the power door locks via the interior driver door lock switch. Once the key is removed, or the driver door is closed, the RKE module will allow the power door locks to lock via the interior door lock switches.
CENTRAL LOCKING/UNLOCKING
The door locks can be locked or unlocked electrically via the exterior door key cylinders to provide the central locking/unlocking feature. The central locking/unlocking feature incorporates a customer programmable "Double activation unlock" feature which operates in the following manner: When enabled, the first turn of the key cylinder to the UNLOCK position (toward the front of the vehicle) will mechanically unlock the door whose key cylinder is being turned. A second turn of the key cylinder to the UNLOCK position (within five seconds of the first turn) will cause all vehicle doors to unlock electrically. When this feature is disabled, all vehicle doors will be unlocked electrically upon the first turn of a key cylinder to the UNLOCK position. The vehicle is locked electrically by turning the key cylinder to the LOCK position once, regardless of the state of the double activation unlock feature.
CHILD PROTECTION LOCKS
To provide a safer environment for children riding in the rear seat, the rear doors have the "child-protection" door lock system.
The child protection locks are on the rear doors only. The lock, when engaged, will disable the inside door handle from opening the door. The lock is part of the latch/lock assembly. If there is a problem with the child protection locks, the entire latch must be replaced. Refer to Body, Doors - Rear, Latch, Removal, and Installation.
The lock is engaged by moving a lever that is located on the rearward inside edge of the door.
To use the system, open each rear door and move the control UP to engage. When the system on a door is engaged, that door can only be opened by using the outside door handle even if the inside door lock is in the unlocked position.
WARNING: TO AVOID TRAPPING ANYONE IN A VEHICLE IN A COLLISION. REMEMBER THAT THE REAR DOORS CAN ONLY BE OPENED FROM THE OUTSIDE WHEN THE CHILD PROTECTION LOCKS ARE ENGAGED.
NOTE: For emergency exit with the system engaged, move the lock rocker switch rearward (unlocked position), roll down window and open the door with the outside door handle.
POWER DECKLID RELEASE
Electrically releases the decklid upon two presses of the RKE transmitter decklid release button. This feature is disabled once the speed of the vehicle is greater than 5 mph. This feature may be altered with the DRB III to allow the decklid to be released with one press of the RKE transmitter decklid release button. The decklid can also be released from the switch in the glove box.
PANIC MODE
Upon activation of the panic function, the headlamps and park lamps flash in an alternating manner, the horn pulses every second and the courtesy lamps are turned ON. The panic mode allow normal nighttime driving by allowing the headlamps and park lamps to be on steady when the headlamp switch is in the ON position. Panic mode is activated immediately by pressing the panic button once. It does not disarm the VTSS or unlock the doors. It is canceled by pressing the button a second time, reaching a vehicle speed greater than 15 mph or after 3 minutes has elapsed in panic mode. Once panic mode has been activated there is a 2-second delay before it will turn OFF. Once it is cancelled there is a 2-second delay before it can be reactivated. This is to avoid the problem of deactivating and immediate reactivating due to multiple button presses.