Principles of Operation
PRINCIPLES OF OPERATIONLocking and Unlocking
The driver and passenger door lock actuators and the luggage compartment lid release solenoid are controlled by the rear electronic module (REM).
The driver and passenger door lock/unlock actuators are hard wired to the REM.
The standard corporate protocol (SCP) - commanded locking feature covers the locking and unlocking response of the REM module to the SCP network commands that it receives from the remote keyless entry (RKE) module.
Smart Lock
The smart lock feature is controlled by the REM. This feature prevents the operator from accidentally locking the ignition keys in the vehicle. When the REM receives a lock command from the door lock control switch, a key-in ignition status from the instrument cluster, and door ajar status from the front electronics module (FEM), the REM commands the driver door to unlock. This feature is configurable.
Auto Lock
The auto lock feature is controlled by the REM. The doors lock, whenever the vehicle is being driven, upon receiving the ignition switch status, the transmission PRNDL status, the brake pedal status, the driver and passenger door ajar switch status. These inputs are communicated through the communication network. This feature is configurable.
Luggage Compartment Lid
The luggage compartment lid release solenoid is controlled by the FEM and the REM. The luggage compartment lid release switch is hardwired to the FEM. When the switch is active, the FEM sends a command to the REM through the SCP communication network. The REM also needs the vehicle speed status from the network in order to activate the luggage compartment lid release solenoid.
Remote Keyless Entry
The door locks and luggage compartment lid can be operated by the RKE transmitter. When a command is received from the RKE transmitter, the RKE module sends a command to the REM to unlock/lock a door or release the luggage compartment lid.
The RKE transmitter initiates the following electronic system functions:
- opens the trunk
- 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 doors are closed
- sounds the horn twice when the LOCK button is pressed twice within 3 seconds and any door, trunk or hood is open
The RKE transmitter has a minimum operating range of 10 m (33 feet).
The RKE transmitters can be programmed using a diagnostic tool or by using the ignition lock cylinder method.