Fuel injection control

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Fuel Injection Control Waveform Graph

Courtesy of MAZDA MOTORS CORP.

PCM terminals

Fuel Injection No. 1: 2BB(+)-body ground(-)
Fuel Injection No. 2: 2BC(+)-body ground(-)
Fuel Injection No. 3: 2BD(+)-body ground(-)
Fuel Injection No. 4: 2AZ(+)-body ground(-)

Oscilloscope setting

10 V/DIV (Y), 25 ms/DIV (X), DC range

Vehicle condition

Idle after warm up