Remote Keyless Entry

Remote Keyless Entry

Description

The remote keyless entry system allows the use of a remote battery powered radio transmitter to communicate with the totally integrated power module to actuate the power lock system.

The RKE transmitter is also equipped with a panic button. If the panic button on the RKE transmitter is depressed, the horn will sound and the exterior lights will flash on the vehicle for about three minutes, or until the panic button is depressed a second time. Pressing the panic button also activates the courtesy lamps. Pressing the panic button again stops the exterior lamps from flashing and the horn from sounding. However, the courtesy lamps will remain illuminated until either the TIPM times out lamp operation or until the turning of the ignition. The panic feature will operate if the ignition is ON, but only if the panic button is pressed prior to starting the vehicle. A vehicle speed of about 25.7 km/h (15 mph) will also cancel the panic event.

The RKE system can also perform other functions on this vehicle. If the vehicle is equipped with the optional vehicle theft security system , the RKE transmitter will arm the VTSS when the lock button is depressed, and disarm the VTSS when the unlock button is depressed.

The RKE system includes two transmitters when the vehicle is shipped from the factory, but the system can retain the vehicle access codes of up to a total of eight transmitters. If an RKE transmitter is inoperative or lost, new transmitter vehicle access codes can be programmed into the system using a scan tool.

This vehicle also offers several customer programmable features, which allows the selection of several optional electronic features to suit individual preferences. Customer programmable feature options affecting the RKE system include:

• Automatic Door Lock - Customer programmable feature that allows the TIPM to perform an automatic door lock if the vehicle speed is above 25.7 km/h (15 mph).

• Automatic Door Unlock on Exit - Customer programmable feature that allows the TIPM to perform an automatic door unlock if the vehicle speed is 0, vehicle in park and driver door is opened.

• Flash Lights with Lock and Unlock - Allows the option of having the park lamps flash as an optical verification that the RKE system received a valid lock request or unlock request from the RKE transmitter, or having no optical verification.

• Programming Additional Transmitter - Allows up to a total of four transmitter vehicle access codes to be stored.

• Remote Unlock Sequence - Allows the option of having only the driver side front door unlock when the RKE transmitter unlock button is depressed the first time. The remaining doors unlock when the button is depressed a second time within 5 seconds of the first unlock press. Another option is having all doors unlock upon the first depression of the RKE transmitter unlock button.

• Sound Horn on Lock - Allows the option of having the horn sound a short chirp as an audible verification that the RKE system received a valid lock request from the RKE transmitter, or having no audible verification.

Operation

The RKE transmitter uses radio frequency signals to communicate with the sentry key remote entry module. The SKREEM is on the PCI bus. When the operator presses a button on the transmitter, it sends a specific request to the SKREEM. In turn, the SKREEM sends the appropriate request over the PCI bus to the following:

• Totally Integrated Power Module - To activate the park lamps, headlamps and the horn for the horn chirp.

• Power Liftgate Module - To control the liftgate lock and unlock functions.

After pressing the LOCK button on the RKE transmitter, all of the door locks will lock, the illuminated entry will turn off (if all doors are closed) and the vehicle theft security system (if equipped) will arm.

Pressing the UNLOCK button one time will unlock the driver door, or all doors based on the customer programmable feature enabled, the illuminated entry will turn on the courtesy lamps and the vehicle theft security system (if equipped) will disarm. Pressing the UNLOCK button a second time, the remaining door locks will unlock.

If the vehicle is equipped with the memory system, the memory message will identify which transmitter (1 or 2) sent the signal.