INTRUDER SENSOR OPERATION [KEYLESS ENTRY SYSTEM]

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1. When the theft-deterrent system is armed, the intruder sensor outputs ultrasonic waves in the passenger compartment. The intruder sensor detects differences in the ultrasonic waves (reflected waves) that are output and bounced off a target object.

2. When a difference in reflected waves occurs by movement in the vehicle (intruder), the CPU calculates the level of difference.

3. If the differences meet certain criteria, the intruder sensor sends a detection signal to the body control module.

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• An intruder sensor cut-off switch has been installed on the keyless entry system transmitter. If the intruder sensor cut-off switch is on while the theft-deterrent system is pre-armed, intruder sensor ultrasonic wave output is cut, and movement detection is stopped.