Keyless Entry: Description and Operation

Remote Keyless Entry and Anti-Theft System Description

The remote keyless entry and anti-theft system can perform the following functions:
- Remotely lock and unlock the vehicle doors by means of a hand-held, high-frequency transmitter.
- Sense intrusion into the vehicle through the doors, the trunk, or the hood.
- Activate a warning if an intrusion is detected.
- Automatically re-lock the doors if the door or the trunk is not opened within 30 seconds after the vehicle has been unlocked by remote keyless entry.
- Help the driver find the vehicle in a parking area.
- Communicate serial data to a scan tool to help diagnose system faults.

The remote keyless entry/anti-theft system consists of the following components:
- ISU (Intelligent Switching Unit).
- Hand-held transmitter.
- SECURITY indicator.
- Rear deck lid open switch.
- Rear deck lid tamper switch.
- Front door tamper switch.
- Door contact switch.
- Central locking unit.
- Turn signals.
- Siren.
- Hood open switch.