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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 445 (ENGINE CONTROL SYSTEM)PCM INSPECTIONINSPECTION USING AN OSCILLOSCOPE (REFERENCE)FUEL INJECTOR (FP2, RF2) CONTROL
1999 Mazda 626 ES, 2.5 D, Standard

Fuel injector (FP2, RF2) control

1999 Mazda 626 ES, 2.5 D, StandardSECTION Fuel injector (FP2, RF2) control
WARNING: This page is about a different car, the 2005 Mazda RX-8 and 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
  • Terminal connected:

    FP2: 3A (+)-Negative battery terminal

    RP2: 3D (+)-Negative battery terminal

  • Oscilloscope setting: 5 V/DIV (Y): 5 ms/DIV (X), DC range
  • Measurement condition: Racing after warm-up (no load)
    Fig 1: Identifying Fuel Injector (FP2, RF2) Control Graph
    G03702060Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.