Pattern 3

Terminal:
- Hazard warning switch signal: 3T (+) <==> body ground (-)
- Front door switch (passenger-side) signal: 5V (+) <==> body ground (-)
- Rear door switch (LH) signal: 5Y (+) <==> body ground (-)
- Rear door switch (RH) signal: 5Z (+) <==> body ground (-)
- Front door switch (driver-side) signal: 5AB (+) <==> body ground (-)
  
  Fig 1: Identifying Signal Pattern 3 Waveform
  Courtesy of MAZDA MOTORS CORP.
Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range