The keyless entry system allows the driver to perform the following functions from outside the vehicle by using a hand held radio transmitter:

The transmitter operates in the UHF band. The transmitter sends digitally coded signals to the remote control door lock receiver (RCDLR) when pressing any of the transmitter buttons.

The RCDLR detects and decodes transmitter signals. For locking, unlocking and remote alarm commands, the RCDLR sends command messages to the body control module (BCM) to operate the following components:

For the rear compartment lid release command, the RCDLR sends a direct signal to the rear compartment lid release actuator.

The following components may also be operated in the usual manner:

For example, the door locks respond to the door lock switches.

The keyless entry system can be programmed with up to 4 keyless entry transmitters.

The Body Control Module (BCM) controls the door locking and interior lighting portions of the keyless entry system. On vehicles equipped with the content theft deterrent system (PRO UA6), the BCM also controls the remote alarm. One of three BCM types is installed on this vehicle based on vehicle equipment:

For more information regarding the BCM, refer to Body Control Module Diagnostic Information in Body Control System.

1. Remote driver door unlock: The driver's door unlock when pressing the unlock button on the keyless entry transmitter.
2. Remote all door unlock: All doors unlock when pressing twice (or more) the unlock button on the keyless entry transmitter.
3. Remote all door lock: All doors lock when pressing the lock button on the keyless entry transmitter.
4. Rear compartment lid release: The rear compartment lid opens when pressing the rear compartment button on the keyless entry transmitter.

Vehicles equipped with the content theft deterrent system (PRO UA6) have these additional features:

1. Remote activation verification: The headlamp flashes and/or the horn sounds when using the keyless entry transmitter. Refer to Feature Customization later in this section for more information.
2. Remote alarm: The headlamps flashes and the horn sounds alternately for two minutes when pressing the alarm button on the keyless entry transmitter. Pressing the alarm button again within two minutes stops the remote alarm.

When the remote driver unlock feature is enabled (mode 2) through feature customization, the RCDLR sends a message to the BCM through circuit 377 to unlock the driver's door upon pressing once the unlock button on the keyless entry transmitter.

When the remote driver door unlock feature is disabled (mode 1) through feature customization, the RCDLR sends a message to the BCM through circuit 377 to unlock all doors upon pressing once the unlock button on the keyless entry transmitter.

Refer to Feature customization later in this section for more information about these modes.

When the remote driver unlock feature is disabled (mode 1) through feature customization, the RCDLR sends a message to the BCM through circuit 377 to unlock all door upon pressing once the unlock button on the keyless entry transmitter.

When the remote driver door unlock feature is enabled (mode 2) through feature customization, the RCDLR sends a message to the BCM through circuit 377 to unlock all doors upon pressing twice (no more than 5 seconds between presses) the unlock button on the keyless entry transmitter.

Refer to Feature customization later in this section for more information about these modes.

The RCDLR sends a message to the BCM through circuit 377 to lock all doors while pressing once the lock button on the keyless entry transmitter. However, the automatic door locks controls door locking as follows:

Refer to Automatic Door Lock Circuit Description in Doors for more information regarding lockout prevention and last door closed locking features.

When pressing the rear compartment button on the keyless entry transmitter, the Remote Control door Lock Receiver (RCDLR) grounds circuit 253. This action energizes the rear compartment lid release relay, thus applying voltage in circuit 275. The rear compartment lid lock release actuator energizes, releasing the rear compartment lid.

If the transaxle is shifted out of PARK, voltage supply to the rear compartment lid release relay in interrupted. This action disables the rear compartment lid release feature.

The Remote Control Door Lock Receiver (RCDLR) sends door locking command (and remote alarm command, if equipped) messages to the Body Control Module (BCM) through the RFA link. The BCM sets DTC 89 if the RFA link circuit 6377 is shorted to B+ or ground. Refer to Body Control Module Diagnostic Information in Body Control System for more information.

The BCM turns on the courtesy lights when unlocking the doors using the keyless entry transmitter. Refer to Interior Lights Circuit Description in Lighting Systems for more information.

Perform the following procedure when replacing transmitter(s).

Important: 

1. Pull the MALL PGM Fuse.
2. Turn the ignition switch to the ACC position.

The seat belt indicator flashes and the chime sounds 2, 3 or 4 times. This action identifies which type of BCM, is installed on the vehicle. Check that the BCM installed on the vehicle is compatible with all of the features on the vehicle. Keyless entry requires BCM type 3 or 4. Refer to Body Control Module Diagnostic Information in Body Control System for more information.

3. Turn the ignition switch from the ACC position to the OFF position, then back to the ACC position within 1 second. This action causes the BCM to enter the diagnostic/program mode.

The BCM may flash and chime Diagnostic Trouble Codes (DTCs). The number of flashes and chimes equals the DTC number. If there are DTCs in memory, record the DTCs. Then refer to Body Control Module Diagnostic Information in Body Control System for more information.

4. Open and close any vehicle door. You should hear a chime if you are in the diagnostic/program mode. If unable to enter diagnostics, refer to Body Control Module Diagnostic Information in Body Control System for more information.
5. Press and hold the lock and unlock buttons at the same time on the keyless entry transmitter for 14 seconds.

•	At the 7-second mark, you may hear a chime. This chime feedback indicates that the transmitter has been resynchronized.

•	Continue holding the lock and unlock buttons until hearing another chime around the 14-second mark. This chime feedback indicates that the transmitter has been programmed successfully.

6. Repeat step 5 for the rest of the transmitters (for a total of 4 transmitter).
7. Exit the BCM diagnostics/programming mode:

•	Turning the ignition switch to the LOCK position.

•	Reinstall the MALL PGM Fuse.

To resynchronize a transmitter, press and hold both the unlock and lock buttons simultaneously on the keyless entry transmitter for seven seconds.

Perform the transmitter resynchroniaztion procedure:

The remote activation verification is available only on vehicles required with the content theft deterrent.

Perform the following procedure to change the remote unlock control mode:

1. Turn off the IP dimmer switch.
2. Turn the ignition switch to the OFF position.
3. Remove the MALL PGM Fuse.
4. Turn the ignition switch to the ACC position.

•	The BCM sounds the chime a number of times equivalent to the BCM type installed on the vehicle (1,2,3, or 4 chimes). Ensure vehicle has either a BCM type 3 or 4. Refer to Body Control Module Diagnostic Information in Body Control System for more information.

•	Now the BCM has entered the feature customization mode.

5. To change the remote unlock control mode, press and release the unlock button on the keyless entry transmitter.
6. The BCM sounds the chime a number of times equivalent to the remote unlock control mode. A transition past mode 2 repeats the sequence starting with mode 1.
7. To change the remote activation verification mode press and release the lock button on the keyless entry transmitter.

The BCM sounds the chime a number of times equivalent to the remote activation verification more. A transition past mode 4 repeats the sequence starting with mode 1.

To exit and save the current feature customization modes:

1. Turn the ignition switch to the OFF position.
2. Reinstall the MALL PGM Fuse.

If unable to change locking modes, refer to RKE System Does Not Change Customization Modes .