mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Fuel Pump Control Unit|Service and Repair > < Fuel Pump Control Unit|Testing and Inspection
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Circuit Open/Short Inspection

Inspect the following wiring harnesses for an open or short circuit (continuity check).

Open circuit

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If there is no continuity, the circuit is open. Repair or replace the harness.
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Fuel pump unit terminal B and fuel pump relay terminal C

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Fuel pump unit terminal D and body ground

Short circuit

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If there is continuity, the circuit is short. Repair or replace the harness.
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Fuel pump unit terminal A and body ground

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Fuel pump unit terminal E and power supply

Fuel Static Pressure Inspection

NOTE:  The fuel static pressure inspection cannot be performed because the pressure regulator is integrated with the fuel pump unit.

Fuel Pump Control Unit|Service and Repair > < Fuel Pump Control Unit|Testing and Inspection