The Remote Function Actuation (RFA) system performs the following functions:

The RFA system consists of a transmitter located on the operator's key fob, and a receiver (with an integral antenna) located over the LR wheelhouse. The receiver is capable of recognizing three transmitter codes. The RFA system does not directly control its functions, but relies on other systems in order to perform the transmitter's commands. The receiver receives and transmits various information from the following systems in order to perform specific functions.

When the RFA system receives a command from a transmitter, a message is sent via the serial data line to the system module capable of performing the needed function.

The RFA system is intended to be used as a supplementary to the vehicles conventionally operated lock/unlock system. It is not intended to replace, but should be used in conjunction with the door lock key. The system could disable due to radio frequency interference or a low transmitter battery. Therefore, always maintain vehicle access with a door key

The RFA system consists of the following major components:

The RFA system allows the user to manually or passively lock or unlock the vehicle through a transmitter located on the user's key chain. The RFA transmitter is a battery powered, water resistant, radio frequency signal generator. The RFA transmitter consists of four manual buttons and a passive slider switch. The operation of the manual and passive features is described below:

When the transmitter manual UNLOCK button is pressed once, the transmitter sends an identification code to the receiver to unlock the driver door. The receiver sends the message to the driver DCM on the serial data line to unlock the driver door. The DCM will then unlock the driver door. The BCM also responds to this message and disarms the theft deterrent system. The BCM will also activate the courtesy lamps if the ambient light is low. If the UNLOCK button is pressed again within 10 seconds, the receiver sends a second message to the passenger DCM to unlock the passenger door. The DCM then unlocks the passenger door.

When the transmitter manual LOCK button is pressed, the transmitter sends an identification code to the receiver to lock both doors. The receiver sends the message to both of the DCMs on the serial data line to lock both doors. Both DCM will then lock both doors. The BCM also responds to this message and arms the theft deterrent system.

When the manual HATCH button is pressed, the transmitter sends an identification code to the receiver to release the hatch or trunk. The receiver sends the message through the serial data line to the BCM. The BCM then disarms the theft deterrent system and activates the hatch or trunk release relay, and the hatch or trunk opens.

When the manual PANIC button is pressed, the transmitter sends an identification code to the receiver to activate the panic mode. The receiver sends the message through the serial data line to the BCM. The BCM activates the horn relay or flashes the lamps (depending on selected personalized options) for 90 seconds or until the panic button is pressed again.

The passive locking and unlocking system operates the same as the manual system except that the motion sensor in the transmitter causes the transmitter to send an identification code to the receiver without manually pressing the LOCK or UNLOCK button. When a valid transmitter is in range, the receiver will unlock the driver door or both doors depending on selected features. Inserting the ignition key disables the passive locking feature.

The PASSIVE ON/OFF slider switch provides the capability to deactivate the passive unlocking and locking feature. Sliding the switch to OFF turns off the transmitter motion sensor which deactivates the passive functions. Sliding the switch to ON turns on the sensor which activates the passive functions. The manual button functions are not affected whether the slider switch is in the PASSIVE ON position or the PASSIVE OFF position.

The user of the RFA system, will be able to choose from the following personalized options:

System personalization can only be accessed through the DIC by performing the following procedure:

1. Press the RESET button in order to clear any IPC warnings.
2. Press the OPTIONS button on the DIC until the IPC displays PASSIVE UNLK.
3. Using the RESET button, select PASSIVE UNLK DRIVER or PASSIVE UNLK BOTH.
4. Press the OPTIONS button on the DIC until APPROACH LIGHTS is displayed.
5. Using the RESET button, select ON or OFF.

When the RFA system sends a lock command to the DCMs, the BCM will arm the theft deterrent system. The BCM then turns off the courtesy lamps and sound the horn, indicating that the theft deterrent system is armed. Whenever the doors are unlocked or the hatch is release, the BCM disarms the theft deterrent system.

To send a DISARM theft deterrent message to the BCM, the RFA system must see the following conditions:

To send an ARM theft deterrent message to the BCM, the RFA system must see the following conditions:

Operational range varies with the orientation of the transmitter. For best performance, hold the transmitter vertically, with the buttons facing you and the bottom cover of the transmitter towards the vehicle. The operational range of the transmitter in the passive mode is considerably less than it is in the manual activation mode. As battery life decreases, so does the maximum operational range of the RFA transmitter. In most cases, the transmitter battery should only be replaced when the operational range has severely decreased. If the transmitter range decreases or the transmitter does not operate, check for the following conditions: