Keyless Entry Receiver: Description and Operation

REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR)

The CTD system is an internal function of the remote control door lock receiver which utilizes class 2 serial data and various switch input information to perform CTD functions. When the RCDLR detects an unauthorized entry it activates the horns and exterior lamps. The RCDLR has 5 basic modes (disarmed, standby, delayed, armed, and alarm) for operating the CTD system. The different modes are described below.
1. The RCDLR has the CTD system in a disarmed mode until the following conditions are detected:
- Ignition key turned to the OFF position.
- Any door open.
- Doors locked by either the power door lock switch or the LOCK button on the transmitter.
2. The RCDLR enters the standby mode when the above conditions are detected. In standby mode the RCDLR commands the instrument cluster to illuminate the SECURITY indicator via a descrete input. (If all the doors are closed and the LOCK button on the transmitter is used, the RCDLR enters the delayed mode.
3. When the last door is closed, the RCDLR enters the delayed mode for 30 seconds. In delayed mode the RCDLR commands the instrument cluster to illuminate the SECURITY indicator via a descrete input.
4. After 30 seconds, the RCDLR enters the armed mode. In armed mode the RCDLR commands the instrument cluster to turn off the SECURITY indicator via a descrete input. Any forced entry activates the alarm mode.
5. When the RCDLR detects a forced entry, the RCDLR enters the alarm mode. The RCDLR activates the horn and exterior lamps for 30 seconds. This is followed by a 3 minute time-out with the horn no longer active. If no new intrusions are detected after the time-out, the horn is not active. The system must be disarmed or the intrusion condition removed after the time-out for the system to exit alarm mode.