Keyless Entry Receiver: Description and Operation

The Remote Keyless Entry (RKE) receiver is a radio frequency unit contained in the Passenger Door Module (PDM). The PDM also contains the program circuitry for the RKE system.

The RKE receiver is energized by one of three messages from the RKE transmitter; Unlock, Lock, or Panic. The PDM circuitry responds to these messages to lock or unlock the power lock motors that it controls. The PDM circuitry also puts Lock, Unlock, and Panic messages on the Chrysler Collision Detection (CCD) data bus.

These messages will result in the Driver Door Module (DDM) locking or unlocking the left front door, and/or the body control module initiating the proper Panic, Illuminated Entry. and Vehicle Theft Alarm functions. If the vehicle is equipped with the memory seat/mirror/radio systems. the propel CCD Unlock message will also result in the DDM initiating its memory recall functions.

For diagnosis of the RKE receiver, the PDM, the DDM, or the CCD data bus, refer to the proper Body Diagnostic Procedures Manual. The RKE receiver is only serviced as a unit with the PDM and, if faulty the PDM unit must he replaced.