To program the Remote Keyless Entry (RKE ) transmitter access
codes into the RKE receiver in the Central Timer Module (CTM )
requires the use of a DRB scan tool.
SYSTEM OPERATION
The Remote Keyless Entry (RKE) receiver is a radio frequency
unit that is integral to the high-line version of the Central Timer
Module (CTM). The CTM also contains the program logic and control
circuitry for the RKE system. The CTM is mounted under the driver
side end of the instrument panel, inboard of the instrument panel
steering column opening.
The RKE receiver has a memory function to retain the vehicle
access codes of at least one, but no more than four RKE
transmitters. The receiver is designed to retain the transmitter
codes in memory, even if the battery is disconnected.
The RKE receiver is energized by one of three radio frequency
inputs from the RKE transmitter; Unlock, Lock, or Panic. The
programming of the CTM responds to these RKE inputs, as well as
many other inputs, by sending the proper control outputs to the
power lock motors, the courtesy lamp circuit, the horn relay, and
the headlamp (or security) relay.
For diagnosis or programming of the RKE receiver within the
high-line CTM, a DRB scan tool and the proper Diagnostic Procedures
are recommended. The RKE receiver is only serviced as a unit with
the high-line CTM and, if faulty or damaged, the CTM unit must be
replaced
