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Home >> Mazda >> 2004 >> 6 s, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System (AJ) >> Engine Control System Operation Inspection >> Fuel Pump Control System Inspection
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Fuel Pump Control System Inspection

  1. Crank the engine and verify that fuel pump relay operation sound is heard.
    • If operation sound is not heard, inspect the following:
      • Fuel pump relay
      • Wiring harness and connectors (Main relay-fuel pump relay-PCM terminal 104)
  2. If operation sound is not heard, inspect the following:
    • Fuel pump relay
    • Wiring harness and connectors (Main relay - fuel pump relay - PCM terminal 4P)