Inspection Using an Oscilloscope (Reference)

WARNING: This page is about a different car, the 2013 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Intruder Sensor Signal Waveform

Terminal connected: 5N (+)-Body ground (-)
Oscilloscope setting: 5 V/DIV (Y): 5 s/DIV (X), DC range