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 phase differences in the ultrasonic waves (reflected waves) that are output and bounced off a target object.

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

3. If the level of phase difference is higher than specified, the intruder sensor sends a detection signal to the BCM.

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Theft-deterrent system sensitivity setting function

• The theft-deterrent system sensitivity differs depending on whether the vehicle has a standard roof or is equipped with a sunroof. The sensitivity setting can be set for a standard roof vehicle or a sunroof-equipped one using the M-MDS. The sensitivity is set before shipment. If the BCM is replaced, the sensitivity can be set by performing the configuration.