Principles of Operation
PRINCIPLES OF OPERATIONPower Door Locks - Without Memory
Regardless of the key position, the smart junction box (SJB) is supplied voltage at all times. When the SJB receives a signal from the remote keyless entry (RKE) transmitter, the keyless entry keypad, or the door lock control switches, the SJB supplies a ground signal to the appropriate lock or unlock relay. The ground signal closes the relay which supplies voltage to the door lock actuators. The door lock actuators then actuate to a lock or unlock position.
Power Door Locks - With Memory
Regardless of the key position, the SJB and the driver door module (DDM) are supplied voltage at all times. When the SJB receives a signal from the RKE transmitter, the keyless entry keypad, or either door lock control switch, the SJB sends a command to the DDM, through the controller area network (CAN), and a ground signal to the lock and unlock relays. When the LH door lock control switch is pressed, the DDM receives the lock or unlock signal. The DDM will send a request through the CAN network to the SJB to lock or unlock the passenger doors. The SJB then responds to the DDM request, authorizing a lock or unlock of the driver door by the DDM. The DDM then supplies voltage and ground to the driver door lock actuator based on the lock or unlock request. The ground signal in the SJB closes the relay which supplies voltage to the remaining door lock actuators. The remaining door lock actuators then actuate to a lock or unlock position determined by the relay.
Autolock
NOTE: The autolock feature is not available on vehicles equipped with a manual transmission.
The autolock feature will lock all the doors when:
- all the doors are closed,
- the ignition is in the RUN position,
- the transaxle is shifted into any gear putting the vehicle in motion, and
- the vehicle reaches a speed greater than 20 km/h (12 mph).
The autolock feature repeats when:
- any door is opened then closed while the ignition is in the RUN position and the vehicle speed is 15 km/h (9 mph) or lower, and
- the vehicle reaches a speed greater than 20 km/h (12 mph).
Auto-Unlock
NOTE:
- The doors will not auto-unlock if the vehicle has been electronically locked before the driver door is opened.
- The auto-unlock feature is disabled on vehicles equipped with a manual transmission.
The auto-unlock feature will unlock 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 has come to a stop and the ignition is turned to the OFF or ACC position; and
- the driver door is opened within 10 minutes of the ignition being turned to the LOCK or ACC position.
Luggage Compartment Lid Release
NOTE: When using the integrated keyhead transmitter (IKT), 2 presses of the luggage compartment lid release button (Within 3 seconds) are required to release the luggage compartment lid.
The luggage compartment lid release system is inhibited when the vehicle speed exceeds 8 km/h (5 mph). The luggage compartment lid latch releases the luggage compartment lid when the customer requests it be opened using either the IKT, the keyless entry keypad, or the luggage compartment lid release switch. When the SJB receives a signal to release the luggage compartment lid, the SJB supplies voltage to the luggage compartment lid latch. The luggage compartment lid latch then actuates to release the luggage compartment lid.
Remote Keyless Entry (RKE)
The keyless entry keypad is hardwired to the SJB. The SJB interprets the inputs from the keyless entry keypad and then controls the associated operation. The keyless entry keypad is illuminated for 5 seconds when any button is pressed. The SJB requests the illuminated entry feature to turn the interior lamps on when a valid entry code is received. If a lock all doors code is entered, the illuminated entry feature turns off. If enabled, the perimeter lighting turns on when the RKE transmitter unlock command is activated. When a RKE transmitter or keyless entry keypad lock command is activated, the perimeter lighting is turned off.
NOTE: The keyless entry keypad does not lock the doors if the driver door is ajar.
Either the RKE transmitter or the keyless entry keypad supplies a signal to the SJB when pressed. The SJB then supplies voltage to the appropriate door lock actuator(s) to lock or unlock the doors. The keyless entry keypad or the RKE transmitter can also be used to release the luggage compartment lid. The RKE transmitter can also be used to activate the panic alarm. The panic button on the IKT must be pressed and held for 1.5 seconds in order to activate the panic alarm. A single press will de-activate the panic alarm. On vehicles equipped with memory, the RKE transmitter also causes the SJB to send a CAN message to the driver seat module (DSM) to activate all memory features to the positions associated with the RKE transmitter being used.
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, and the key is in the ignition lock cylinder with either front door open, the SJB commands all the doors to lock, then 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 an RKE command from an integrated key or the keyless entry keypad.
Door Lock Control Switch Inhibit
As a theft deterrent, the door lock control switches and the luggage compartment lid release switch can be disabled 20 seconds after the key is turned to the OFF position and the vehicle is locked using the RKE transmitter, the keyless entry keypad, or when the driver door is opened, and the power locks are locked with the door lock control switch, then the driver door is closed.
The door lock control switch is enabled when the vehicle is unlocked by one of the following methods:
- The keyless entry keypad
- The RKE transmitter
- Any door is opened from the vehicle's interior
- The key is turned to the RUN position
The door lock control switch inhibit feature is configured off by default. To enable this feature, refer to the Owner's Literature.
2-Stage and Global Unlocking
The vehicle can be unlocked using the RKE transmitter in either 2-stage or global unlock modes. In 2-stage unlocking, the driver door unlocks on the first press of the unlock button and the rest of the locks unlock on a second press of the unlock button within 5 seconds of the first unlock button press. In global unlock, all the door locks unlock on the first press of the unlock button.
The RKE system is toggled between 2-stage and global unlock modes by pressing the lock and unlock buttons at the same time and holding them pressed for 4 seconds. The turn signal lamps flash twice to confirm that the mode has been toggled.