Mazda Car 2005-06

Testing

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  1. Inspect thefuel pump continuity as follows:
    1. Disconnect the negative battery cable.
    2.  
    3. Disconnect the fuel pump unit connector.
    4.  
    5. Inspect for continuity between fuel pump unit terminals B and D.
    6.  
    7. If there is no continuity, replace the fuel pump. If there is continuity, check the wiring harnesses for open or short circuit as follows:
    8.  

  2.  
  3. If there is no continuity, there is an open circuit. Repair or replace the harness at the fuel pump unit.
  4.  
  5. If there is continuity, there is a short circuit. Repair or replace the harness at the fuel pump unit.

    Click image to see an enlarged view

    Fig. Fuel pump unit connector terminal- -MX-5 Miata

  6.  

  1. Inspect for continuity between fuel pump unit connector terminals B and D.
  2.  
  3. If there is no continuity, replace the fuel pump body.
  4.  
  5. If there is no continuity, there is an open circuit. Repair or replace the wiring harness at:
    1. Fuel pump unit terminal D and body GND.
    2.  
    3. Fuel pump unit terminal B and fuel pump relay terminal C.
    4.  

  6.  
  7. If there is continuity, there is a short circuit. Repair or replace the wiring harness at:
    1. Fuel pump unit terminal D and power supply.
    2.  
    3. Fuel pump unit terminal B and body GND.

      Click image to see an enlarged view

      Fig. Fuel pump unit connector terminal- -Mazda6 and Mazdaspeed6

    4.  

  8.  

 
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