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Home >> Mazda >> 2006 >> 3 i, 2.0 F, Standard >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Fuel Pump Unit Inspection >> Circuit Open/Short Inspection

Circuit Open/Short Inspection

  1. Inspect the following wiring harnesses for open or short circuit (continuity check).
    Fig 1: Inspecting Fuel Pump Unit Harness Connector Terminals
    G04313648Courtesy of MAZDA MOTORS CORP.

    Open circuit 

    • If there is no continuity, there is an open circuit. Repair or replace the harness.
      • Fuel pump unit terminal C*1 , A*2 and fuel pump relay terminal C
      • Fuel pump unit terminal B*1 , E*2 and body ground

    Short circuit 

    • If there is continuity, there is a short circuit. Repair or replace the harness.
      • Fuel pump unit terminal C*1 , A*2 and body ground
      • Fuel pump unit terminal B*1 , E*2 and power supply

    *1 California emission regulation applicable model

    *2 Except for California emission regulation applicable model

    Fig 2: Fuel Pump Unit Terminal Connector
    G04313649Courtesy of MAZDA MOTORS CORP.
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