Fuel injection control signal

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

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