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Fuel injection control (+) signal
 Courtesy of MAZDA MOTORS CORP.
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PCM terminals
- Fuel Injection No. 1: 1DG (+)-body ground (-)
- Fuel Injection No. 2: 1CY (+)-body ground (-)
- Fuel Injection No. 3: 1CU (+)-body ground (-)
- Fuel Injection No. 4: 1DC (+)-body ground (-)
Oscilloscope setting
- 50 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition