Fuel injection signal

WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

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