Inspection Using An Oscilloscope (Reference)

Pattern 1 

Fig 1: Terminal Voltage Wave Pattern

Courtesy of MAZDA MOTORS CORP.

• Terminal:
  • Brake fluid level signal: 2Q (+) ↔ground (-)
  • Washer level signal: 2S (+) ↔ground (-)
• Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range