Remote Keyless Entry (RKE)

The body control module interfaces with the RKE module via a one-way serial bus interface. The RKE module is not on the PCI bus. The RKE module sends a 0-5 volt pulse width signal to the BCM depending on which button on the transmitter was pressed. The BCM controls the door lock/unlock functions and the arming/disarming of the Vehicle Theft Security System and the activation of illuminated entry. The BCM also controls the decklid solenoid. The Body Control Module activates the park lamp, headlamps, and horn for horn chirp as received from the RKE transmitter. Because the ZB uses virtual locking, it knows when the vehicle is locked or unlocked. If the RKE Unlock button is pressed, and the vehicle is virtually locked, then the park lamps will flash one time to indicate that only the drivers outside door handle is active. If the park lamps flash twice, then both outside door handles are active. When a second press is initiated (within 5 seconds of the first) both passenger doors will unlock and the park & tail lamps will flash twice. The RKE module is capable of retaining up to 4 individual access codes (4 transmitters). The 4 button transmitters will have 2-CR2016 batteries in series. The minimum battery life should be approximately 4.7 years based on 20 transmissions a day at 84°F (25°C). Using the DRBIII® and selecting RKE FOB Test can test the transmitter or use the 9001 RF Detector. The RKE module can be programmed via the DRBIII® or the customer programming method. The BCM will only allow programming mode to be entered when the ignition is in the on position, and the VTSS is in the disarmed mode. The RKE module is located behind and left of the instrument cluster.