Keyless Entry Module: Description and Operation

REMOTE KEYLESS ENTRY (RKE) MODULE

RKE Module:

The Remote Keyless Entry (RKE) module is in the overhead console or in the dome lamp assembly. It operates on a RF signal, which makes it less dependent on the aiming of the transmitter. When an unlock signal is received (from a transmitter), the module will ground the unlock control circuit, therefore actuating the passenger door module and at the same time grounding the courtesy lamps driver circuit, actuating the illuminated entry. The RKE module is capable of retaining four individual vehicle access codes (four transmitters). This system incorporates a rolling code feature. A horn chirp feature is also part of this system and is customer programmable.

The RKE module has some DRB III functions, actuators, read switch states, and RF signal status. The Door Lock, Door Unlock, Horn and Illuminated Entry lights cab be actuated. The horn and illuminated entry activation time is adjustable using the DRB III. The DRB III will read the switch status of the door lock switch and door unlock switch (opened/closed), the RF signal (valid/invalid) RF checksum, Programmed/Non-programmed RF transmitter, and the In-Sync/Out-of-Sync transmitter. The D.B. can also turn the horn chirp and illuminated entry ON and OFF.

The XJ will be shipped with the horn chirp enabled. It can be deactivated manually using the following procedure: Press and hold the LOCK button on the transmitter for 5-10 seconds, and then while the LOCK button is pressed, press and release the UNLOCK button. The horn chirp feature can be reactivated by repeating the procedure.