The keyless entry system operates several vehicle features
from the outside of the vehicle. The keyless entry system uses a keyless
entry transmitter in order to perform the following functions:
| • | Press the UNLOCK button in order to unlock the driver's door |
| • | Press the UNLOCK button twice in order to unlock all of the doors |
| • | Press the LOCK button in order to lock all of the doors |
| • | Press the PANIC button in order to sound the panic alarm |
| • | Press the rear compartment lid release button in order to activate
the rear compartment release |
Remote Function Actuator (RFA) Module
The remote function actuator (RFA) module detects and decodes the UHF
signal from the keyless entry transmitter. The RFA module then issues control
signals through the class 2 serial data line to the following components:
| • | The rear compartment lid release actuator |
| • | The theft deterrent system |
Door Lock/Unlock
When the remote function actuator (RFA) module receives a valid command
transmission in order to lock/unlock the doors, the module sends the appropriate
signal over the Class 2 serial data line to the driver
door module (DDM). The DDM then transmits the command to the
following modules over simple bus interface (SBI):
| • | The passenger door module |
Rear Compartment Lid Release
When the remote function actuator (RFA) module receives a command to
open the rear compartment lid, the RFA module grounds the rear compartment
relay.
The rear compartment lid release actuator opens the rear compartment.
Panic Alarm
When the remote function actuator (RFA) module receives a panic alarm
command with the IGN1 and the ACC1 in an inactive state, the following functions
occur:
| • | The perimeter lights flash at 1 second intervals, alternating
with the horn |
| • | The horn sounds at 1 second intervals, alternating with
the perimeter lights |
The alarm continues until one of the following events occur:
| • | The system receives another input from the transmitter |
| • | The IGN1 or the ACC1 inputs change from inactive to active |
| • | The system receives a driver or a passenger door lock cylinder
state class 2 serial data message |
