Doors: Description and Operation
HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMSNOTE: The smart junction box (SJB) is also known as the generic electronic module (GEM).
Hood
The hood latch system consists of the following components:
- Hood latch
- Hood latch control handle and cable
Front Door
The front door latch system consists of the following components:
- Interior door handles
- Exterior door handle
- Front door latch
- Push button rod
- Front door latch remote control
Rear Door, SuperCab
The SuperCab rear door latch system consists of the following components:
- Upper rear door latch (part of the door latch remote control)
- Interior door handle
- Rear door latch remote control
- Interior rear door remote control
- Lower rear door latch and cable (part of the door latch remote control)
- Exterior door handle
Rear Door, Crew Cab
The crew cab rear door latch system consists of the following components:
- Interior door handle
- Exterior door handle
- Rear door latch
- Rear door latch remote control
- Bellcrank and horizontal rod
- Push button rod
Tailgate
The tailgate latch system consists of the following components:
- Tailgate latches
- Tailgate latch actuating rods
- Tailgate latch release handle
- Tailgate latch remote control
Power Lock/Unlock
The power lock/unlock feature requests all of the vehicle doors locked or unlocked upon a customer request from either door lock control switch in the vehicle. The power door locking system functions independently of ignition status or vehicle speed.
Autolock
NOTE: The autolock feature is not available on vehicles equipped with a manual transmission.
The autolock feature locks all the doors when all the doors are closed, the key is in the RUN position, the transmission is in either a forward or reverse gear, and the vehicle speed is greater than 20 km/h (12 mph) for 2 seconds or longer.
The autolock feature repeats when any door is opened then closed while the ignition is still in the RUN position, the vehicle speed is 15 km/h (9 mph) or slower, and the vehicle then attains a speed greater than 20 km/h (12 mph) for 2 seconds or longer.
Refer to Autolock and Horn Chirp Programming for programming information. Autolock and Horn Chirp Programming
Auto-Unlock
NOTE:
- The auto-unlock feature is disabled on vehicles equipped with a manual transmission.
- The doors will not auto-unlock if the vehicle has been electronically locked before the driver door is opened.
The auto-unlock feature unlocks all the doors when the ignition is in the RUN position, all the doors are closed, and the vehicle has been in motion at a speed greater than 20 km/h (12 mph), the vehicle then comes to a stop and the ignition is switched to LOCK or ACC, and the driver door is opened within 10 minutes of the ignition being switched to LOCK or ACC.
Refer to Autolock and Horn Chirp Programming for programming information. Autolock and Horn Chirp Programming
Smart Unlock
The smart unlock feature prevents the doors from locking with the key in the ignition lock cylinder. When the SJB receives a lock command from a door lock control switch only, and the key is in the ignition lock cylinder with one of the front doors open, the SJB commands the doors to unlock.
The vehicle can still be locked with the ignition key in the ignition cylinder by locking the doors with the push button rods, the door lock cylinder or lock command from a remote keyless entry (RKE) transmitter.
Remote Keyless Entry (RKE)
The SJB accepts programming of up to 4 RKE transmitters. The RKE transmitters can be programmed using a scan tool or by using the remote keyless entry transmitter programming procedure. Refer to Remote Keyless Entry Transmitter Programming for programming information. Transmitter
The RKE transmitter carries out the following functions:
- Unlocks the driver door
- Unlocks all doors
- Locks all doors
- Activates/deactivates the panic alarm
- Commands the interior lamps on (when unlocking) and off (when locking)
- Sounds the horn once when LOCK is pressed twice within 3 seconds, and the doors are closed
- Sounds the horn twice when LOCK is pressed twice within 3 seconds, and any door is ajar
The RKE transmitter has an operating range of 10 m (33 ft).
Remote Keyless Entry (RKE) Lock/Unlock Control - Unlock
The RKE feature provides lock/unlock functions independently of key position, vehicle speed, or transmission position. The RKE feature provides a stepped (if enabled) process for unlocking the doors. Upon receipt of the first request for unlocking the doors, the RKE control feature requests the SJB to unlock the driver door only. If another unlock request is received within 3 seconds of the first, the RKE feature requests the SJB to unlock all the doors. This feature can be configured to global unlock, so that all the doors unlock on the first press of the UNLOCK button. Refer to Stepped Unlock Programming. Stepped Unlock Programming
Remote Keyless Entry (RKE) Lock/Unlock Control - Lock
The RKE feature requests that all the doors be locked when the LOCK button is pressed. On any press of the LOCK button with all doors closed, the SJB provides one flash of the turn signals. If any door is ajar, no flash occurs. As soon as the last door is closed, the SJB provides the flash of the turn signals. If 2 presses of the LOCK button are received within 3 seconds, the horn chirps once and the turn signals flash twice to indicate that all the doors are closed and locked. If any door is ajar when the second lock request is received within 3 seconds of the first, the RKE transmitter feature requests the SJB chirp the horn twice without flashing the turn signals to indicate it locked all the doors but one or more doors are ajar. When the key is in the RUN or START position, the turn signal flashes and horn chirp confirmations do not occur.
Panic Alarm
The panic alarm feature provides audible and visual alarms which are evident from the exterior of the vehicle. The panic alarm feature requests that the turn signals are flashed and the horn sounds until deactivation. The flashing of the outputs occurs simultaneously. Activation of the panic alarm is accomplished by pressing the panic button on a RKE transmitter whenever the key is in the OFF position. At all other times this feature is disabled. Deactivation of an active panic alarm is accomplished by any of the following actions:
- A second press of the RKE transmitter panic button
- The key is switched out of the OFF position
- A period of 2 minutes and 45 seconds has elapsed since the initial activation
Remote Keyless Entry (RKE) Transmitter Memory Seat
The RKE transmitter feature provides memory seat/adjustable pedals/mirrors easy entry feature. When the unlock button is pressed, the drivers seat, adjustable pedals, and mirrors move to the desired memory position (the seat, pedal, and mirror position corresponds to the transmitter being used). This feature can be enabled/disabled. Refer to Remote Memory Activation and Remote Memory Deactivation.
Keyless Entry Keypad
The keyless entry keypad (if equipped), located on the exterior of the driver door, provides a method for the customer to access the vehicle without a key or an RKE transmitter. The keyless entry keypad feature:
- Locks all doors
- Unlocks the driver door
- Unlocks all doors
- Programs/erases the customer keypad code
- Enables/disables auto-locking
- Enables/disables auto-unlocking
- Illuminates the keypad
- Illuminates the interior lamps
The keyless entry keypad feature operates independently of ignition status, vehicle speed, or transmission position. When a keypad button is pressed, the keypad buttons illuminate to provide better visibility. If 7/8 and 9/0 are pressed or 5 seconds have elapsed since the last button press, the illumination is turned off.
Vehicles equipped with a keyless entry keypad are programmed with a factory set 5-digit entry code. This code is provided to the customer on a wallet card in the Owner Literature package. In addition, this code is available through the use of a scan tool, and is printed on the smart junction box (SJB) label located on the back side of the module (installed position). When entering codes, each digit must be entered within 5 seconds of the previous button press.
Anti-Scan Feature
To provide added security, the keyless entry keypad is disabled for 1 minute after pressing the button 35 times without a valid entry code being entered. The keypad flashes during this 1-minute mode with all functionality disabled except for 7/8 and 9/0 still being allowed to lock the vehicle.
Anti-scan is turned off after any of the following events:
- One minute of keyless entry keypad inactivity has elapsed
- The RKE transmitter UNLOCK button is pressed
- The key is turned to the ON position
Unlocking the Doors with the Keyless Entry Keypad System
To unlock the driver door, enter either the factory set code or the personal code (each digit must be pressed within 5 seconds of the prior digit). This illuminates the interior lamps.
To unlock all doors, enter either the factory set code or the personal code (driver door unlocks) and press the 3/4 button within 5 seconds.
Locking the Doors with the Keyless Entry Keypad System
It is not necessary to enter the factory set or personal code prior to locking all doors. To lock all doors, press the 7/8 and 9/0 buttons at the same time with the driver door closed.
Perimeter Lighting Feature
NOTE: On vehicles with autolamps, the perimeter lighting feature does not activate in daylight conditions.
Vehicles equipped with perimeter lighting can have this feature activated or deactivated. Refer to Perimeter Lighting Feature Programming. Perimeter Lighting Feature Programming
The following items illuminate when the UNLOCK button on the remote transmitter is pressed:
- Headlamps
- Parking, rear and license plate lamps
The lamps turn off:
- if the ignition switch is turned to the RUN position.
- when the lock control on the remote transmitter is pressed.
- if the vehicle is locked using the keyless entry keypad.
- after 25 seconds have elapsed since the perimeter lighting was activated.