Intruder Sensor - Mazda 6 Training Manual

INTRUDER SENSOR

Outline
• The intruder sensor is located in center part of the roof on sliding sunroof-equipped vehicles or the forward part
of the roof on sliding sunroof non-equipped vehicles.
• The intruder sensor detects movement in the vehicle by radio waves and sends the detection signal to the
theft-deterrent control module.
• 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 radio wave output is
cut, and movement detection is stopped.
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1 Intruder sensor (without sliding sunroof)
2 Intruder sensor (with sliding sunroof)
Operation
1. When the theft-deterrent system is armed, the intruder sensor outputs a 2.45 GHz radio wave in the passenger
compartment. The intruder sensor detects phase differences in radio 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 theft-
deterrent module.
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1 Target object
2 Receiver
3 Transmitter
4 Phase detection area
THEFT-DETERRENT SYSTEM
3 Transmitter
4 Intruder sensor cut-off switch
5 Oscillator
6 CPU
7 Detection signal output
8 Theft-deterrent control module
A6E812050000T06
A6E8120T003
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A6E8120T006
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