Using M-MDS or equivalent

Connect the M-MDS or equivalent to the DLC-2.
Remove the fuel filler cap.
Turn the ignition switch to the ON position.

Fig 1: Identifying DLC-2 Connector Terminal
Courtesy of MAZDA MOTORS CORP.
Verify that the fuel pump can be heard operating when FP is changed from off to on position using simulation function FP.
- If it cannot be verified, inspect for a voltage of 3.76-5.28 V on the fuel pump wiring harness-side connector terminal B.
  - If it is within the specification, inspect the following.
    - Fuel pump continuity inspection
    - Wiring harness between fuel pump terminal D and GND
  - If not within the specification, inspect the following.
    - Fuel pump relay
    - Wiring harnesses, connectors between fuel pump relay, fuel pump resistor, and fuel pump
    - Wiring harnesses, connectors between main relay, fuel pump relay, and PCM
      
      Fig 2: Identifying Fuel Pump Unit Wiring Harness-Side Connector
      Courtesy of MAZDA MOTORS CORP.
Voltage 3.76-5.28 V