Fuel injection control signal

Fig 1: Fuel Injection Control Signal - Oscilloscope Graph

Courtesy of MAZDA MOTORS CORP.

• PCM terminal
  • No.1: 2A (+) <--> 3A (-)
  • No.2: 2D (+) <--> 3A (-)
  • No.3: 2G (+) <--> 3A (-)
  • No.4: 2J (+) <--> 3A (-)
• Oscilloscope setting: 2.0 V/DIV (Y), 20 ms/DIV (X), DC range
• Vehicle condition: Idling after warm-up