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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 615 (CONTROL SYSTEM [BODY CONTROL MODULE))BODY CONTROL MODULE (BCM) INSPECTIONINSPECTION USING AN OSCILLOSCOPE (REFERENCE)
2011 Mazda 3 Mazdaspeed, 2.3 3

Inspection Using an Oscilloscope (Reference)

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Inspection Using an Oscilloscope (Reference)
WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Intruder sensor signal 

  • Terminal connected: 5N (+)-Body ground (-)
  • Oscilloscope setting: 5 V/DIV (Y): 5 s/DIV (X), DC range
    Fig 1: Oscilloscope Waveform Graph (Intruder Sensor Signal)
    G06732680Courtesy of MAZDA MOTORS CORP.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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