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HOMESERVICE MANUALSMAZDA1998PROTEGE DX, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC TESTINGFUEL SYSTEMFUEL PRESSURE (EXCEPT B2500, B3000 & B4000)FUEL PUMP
1998 Mazda Protege DX, Automatic

Fuel Pump

1998 Mazda Protege DX, AutomaticSECTION Fuel Pump
  1. Fuel pump is located inside fuel tank. Locate data link connector in left side of engine compartment. Connect a jumper wire between data link connector terminals F/P and GND. See Figure . Remove fuel filler cap. Turn ignition on. Listen for fuel pump operation at fuel filler. Install fuel filler cap.
  2. If fuel pump does not operate, using DVOM, measure voltage between fuel pump connector power terminal and chassis ground. If battery voltage is present, go to next step. If battery voltage is not present, repair power circuit to fuel pump. See appropriate wiring diagram in WIRING DIAGRAMS article.
  3. Using DVOM, check for continuity between fuel pump connector ground terminal and chassis ground. If continuity exists, replace fuel pump. If continuity does not exist, repair ground circuit.
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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.