Fuel injection control (+) signal

Fig 1: Fuel Injection Control Positive Signal Voltage Graph

G10969068

Courtesy of MAZDA MOTORS CORP.

PCM terminals

Fuel Injection No. 1: 1DP(+)-body ground(-)
Fuel Injection No. 2: 1DX(+)-body ground(-)
Fuel Injection No. 3: 1EB(+)-body ground(-)
Fuel Injection No. 4: 1DT(+)-body ground(-)

Oscilloscope setting

10 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition

Idle after warm up