Principles of Operation (How Does it Work?)

Rear Electronics Module (REM)
The rear electronics module (REM) controls the output functions of the door locks for the following:
^ passenger door lock actuator
^ driver door lock actuator

Locking and Unlocking
The driver and passenger door lock are controlled by the REM. The REM also controls the luggage compartment lid release solenoid.

Driver door lock/unlock motor and passenger door lock/unlock motor are hard wired to the REM. The lock switch locking feature provides the operator with a way to lock and unlock the vehicle using the interior trim panel lock and unlock switches.

The Standard Corporate Protocol (SCP) commanded locking feature covers the locking and unlocking response of the module to SCP network commands that it receives from other electronic modules.

Smart Locking
The smart locks feature is controlled by the REM. This feature prevents the operator from accidentally locking the vehicle keys in the vehicle. The REM receives the key-in ignition status from the instrument cluster, and the driver door ajar status from the front electronics module (FEM) before this feature can function. This feature is configurable.

Auto Locking
The automatic door locks feature is controlled by the REM. This feature locks the doors whenever the vehicle is being driven. This feature needs the ignition switch status, the transmission PRNDL status, the brake pedal status, the driver and passenger door ajar switch status before this feature will function. This feature is configurable.

Luggage Compartment Lid
The luggage compartment lid feature is controlled by the FEM and the REM. The luggage compartment lid release switch is hard wired to the FEM. When the switch is active, the FEM will send 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. The REM will also activate the luggage compartment lid release solenoid by the command from the Remote Keyless Entry (RKE) module (keyfob).

Remote Keyless Entry
The door locks and luggage compartment lid can be operated by the RKE module. When a command is received from the keyfob, the RKE will send a command to the FEM or the REM to unlock a door or unlock the luggage compartment lid.