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Home >> Mazda >> 1994 >> MPV LX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System >> Fuel Pressure (Fuel Injection) >> Fuel Pump Circuit
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Fuel Pump Circuit

  1. Turn ignition on. On MPV connect terminals of Yellow fuel pump check connector with a jumper wire. See FUEL PUMP CHECK CONNECTOR (YELLOW) LOCATIONS table.
  2. Listen for fuel pump operating sound. If there is no sound, check main fuse, circuit operating relay, fuel pump and all electrical connections. Airflow meter grounds circuit opening relay whenever airflow is present.
  3. If circuit opening relay does not work, proceed to SYSTEM/COMPONENT TESTS article or appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section below.
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