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Fuel injection signal

Fig 1: Fuel Injection Signal Inspection By Using Oscilloscope (Reference)

Courtesy of MAZDA MOTORS CORP.

PCM terminal
- No. 1: 75(+)-103(-)
- No. 2: 101(+)-103(-)
- No. 3: 74(+)-103(-)
- No. 4: 100(+)-103(-)
- No. 5: 73(+)-103(-)
- No. 6: 99(+)-103(-)
Oscilloscope setting: 2V/DIV (Y), 10ms/DIV (X), DC range
Vehicle condition: idle after warm up