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Home >> Mazda >> 2008 >> 3 Mazdaspeed, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Controls L3 With TC) >> Engine Control System Operation Inspection [L3 With TC] >> Fuel Pump Control System Inspection >> If simulation function of M-MDS is not used:

If simulation function of M-MDS is not used:

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